diff --git a/app/components/searchable_dropdown_component.rb b/app/components/searchable_dropdown_component.rb
index 1f4d5f9e87..67a785edaf 100644
--- a/app/components/searchable_dropdown_component.rb
+++ b/app/components/searchable_dropdown_component.rb
@@ -1,17 +1,18 @@
 # frozen_string_literal: true
 
 class SearchableDropdownComponent < ViewComponent::Base
-  REMOVED_SEARCH_PLUGIN = { 'tom-select-options-value': '{ "plugins": [] }' }.freeze
   MINIMUM_OPTIONS_FOR_SEARCH_FIELD = 11 # at least 11 options are required for the search field
 
   def initialize(
-    form:,
     name:,
     options:,
     selected_option:,
-    placeholder_value:,
+    form: nil,
+    placeholder_value: '',
     include_blank: false,
     aria_label: '',
+    multiple: false,
+    remote_url: nil,
     other_attrs: {}
   )
     @f = form
@@ -21,13 +22,15 @@ class SearchableDropdownComponent < ViewComponent::Base
     @placeholder_value = placeholder_value
     @include_blank = include_blank
     @aria_label = aria_label
+    @multiple = multiple
+    @remote_url = remote_url
     @other_attrs = other_attrs
   end
 
   private
 
   attr_reader :f, :name, :options, :selected_option, :placeholder_value, :include_blank,
-              :aria_label, :other_attrs
+              :aria_label, :multiple, :remote_url, :other_attrs
 
   def classes
     "fullwidth #{'no-input' if remove_search_plugin?}"
@@ -36,11 +39,33 @@ class SearchableDropdownComponent < ViewComponent::Base
   def data
     {
       controller: "tom-select",
-      'tom-select-placeholder-value': placeholder_value
-    }.merge(remove_search_plugin? ? REMOVED_SEARCH_PLUGIN : {})
+      'tom-select-placeholder-value': placeholder_value,
+      'tom-select-options-value': tom_select_options_value,
+      'tom-select-remote-url-value': remote_url,
+    }
+  end
+
+  def tom_select_options_value
+    plugins = []
+    plugins << 'virtual_scroll' if @remote_url.present?
+    plugins << 'dropdown_input' unless remove_search_plugin?
+    plugins << 'remove_button' if multiple
+
+    {
+      plugins:,
+      maxItems: multiple ? nil : 1,
+    }
+  end
+
+  def uses_form_builder?
+    f.present?
   end
 
   def remove_search_plugin?
-    @remove_search_plugin ||= options.count < MINIMUM_OPTIONS_FOR_SEARCH_FIELD
+    # Remove the search plugin when:
+    # - the select is multiple (it already includes a search field), or
+    # - there is no remote URL and the options are below the search threshold
+    @remove_search_plugin ||= multiple ||
+                              (@remote_url.nil? && options.count < MINIMUM_OPTIONS_FOR_SEARCH_FIELD)
   end
 end
diff --git a/app/components/searchable_dropdown_component/searchable_dropdown_component.html.haml b/app/components/searchable_dropdown_component/searchable_dropdown_component.html.haml
index 14d8969348..50d574d360 100644
--- a/app/components/searchable_dropdown_component/searchable_dropdown_component.html.haml
+++ b/app/components/searchable_dropdown_component/searchable_dropdown_component.html.haml
@@ -1 +1,4 @@
-= f.select name, options_for_select(options, selected_option), { include_blank: }, class: classes, data:, 'aria-label': aria_label, **other_attrs
+- if uses_form_builder?
+  = f.select name, options, { selected: selected_option, include_blank:, multiple: }, class: classes, data:, 'aria-label': aria_label, **other_attrs
+- else
+  = select_tag name, options_for_select(options, selected_option), include_blank:, multiple:, class: classes, data:, 'aria-label': aria_label, **other_attrs
diff --git a/app/controllers/admin/reports_controller.rb b/app/controllers/admin/reports_controller.rb
index bea2a2adc0..d8efede625 100644
--- a/app/controllers/admin/reports_controller.rb
+++ b/app/controllers/admin/reports_controller.rb
@@ -4,6 +4,7 @@ module Admin
   class ReportsController < Spree::Admin::BaseController
     include ActiveStorage::SetCurrent
     include ReportsActions
+    include Reports::AjaxSearch
 
     helper ReportsHelper
 
diff --git a/app/controllers/concerns/reports/ajax_search.rb b/app/controllers/concerns/reports/ajax_search.rb
new file mode 100644
index 0000000000..03df572a48
--- /dev/null
+++ b/app/controllers/concerns/reports/ajax_search.rb
@@ -0,0 +1,108 @@
+# frozen_string_literal: true
+
+module Reports
+  module AjaxSearch
+    extend ActiveSupport::Concern
+
+    def search_enterprise_fees
+      report = report_class.new(spree_current_user, params, render: false)
+      fee_ids = enterprise_fee_ids(report.search.result)
+      query = EnterpriseFee.where(id: fee_ids)
+
+      render json: build_search_response(query)
+    end
+
+    def search_enterprise_fee_owners
+      report = report_class.new(spree_current_user, params, render: false)
+      owner_ids = enterprise_fee_owner_ids(report.search.result)
+      query = Enterprise.where(id: owner_ids)
+
+      render json: build_search_response(query)
+    end
+
+    def search_distributors
+      query = frontend_data.distributors
+
+      render json: build_search_response(query)
+    end
+
+    def search_order_cycles
+      query = frontend_data.order_cycles
+
+      render json: build_search_response(query)
+    end
+
+    def search_order_customers
+      query = frontend_data.order_customers
+
+      render json: build_search_response(query)
+    end
+
+    def search_suppliers
+      query = frontend_data.orders_suppliers
+
+      render json: build_search_response(query)
+    end
+
+    private
+
+    def build_search_response(query)
+      page = (params[:page] || 1).to_i
+      per_page = 30
+
+      filtered_query = apply_search_filter(query)
+      total_count = filtered_query.size
+      items = paginated_items(filtered_query, page, per_page)
+      results = format_results(items)
+
+      { results: results, pagination: { more: (page * per_page) < total_count } }
+    end
+
+    def apply_search_filter(query)
+      search_term = params[:q]
+      return query if search_term.blank?
+
+      escaped_search_term = ActiveRecord::Base.sanitize_sql_like(search_term)
+      pattern = "%#{escaped_search_term}%"
+
+      # Handle different model types
+      if query.model == OrderCycle
+        query.where("order_cycles.name ILIKE ?", pattern)
+      elsif query.model == Customer
+        query.where("customers.email ILIKE ?", pattern)
+      else
+        query.where("name ILIKE ?", pattern)
+      end
+    end
+
+    def paginated_items(query, page, per_page)
+      if query.model == Customer
+        query.order(:email).offset((page - 1) * per_page).limit(per_page).pluck(:email, :id)
+      elsif query.model == OrderCycle
+        query.order('order_cycles.orders_close_at DESC')
+          .offset((page - 1) * per_page)
+          .limit(per_page).pluck(
+            :name, :id
+          )
+      else
+        query.order(:name).offset((page - 1) * per_page).limit(per_page).pluck(:name, :id)
+      end
+    end
+
+    def format_results(items)
+      items.map { |label, value| { value:, label: } }
+    end
+
+    def frontend_data
+      @frontend_data ||= Reporting::FrontendData.new(spree_current_user)
+    end
+
+    def enterprise_fee_owner_ids(orders)
+      EnterpriseFee.where(id: enterprise_fee_ids(orders)).select(:enterprise_id)
+    end
+
+    def enterprise_fee_ids(orders)
+      Spree::Adjustment.enterprise_fee.where(order_id: orders.select(:id)).select(:originator_id)
+    end
+  end
+end
diff --git a/app/helpers/reports_helper.rb b/app/helpers/reports_helper.rb
index 1caab98aa9..0fa95863e0 100644
--- a/app/helpers/reports_helper.rb
+++ b/app/helpers/reports_helper.rb
@@ -34,29 +34,8 @@ module ReportsHelper
     end
   end
 
-  def fee_name_options(orders)
-    EnterpriseFee.where(id: enterprise_fee_ids(orders))
-      .pluck(:name, :id)
-  end
-
-  def fee_owner_options(orders)
-    Enterprise.where(id: enterprise_fee_owner_ids(orders))
-      .pluck(:name, :id)
-  end
-
   delegate :currency_symbol, to: :'Spree::Money'
 
-  def enterprise_fee_owner_ids(orders)
-    EnterpriseFee.where(id: enterprise_fee_ids(orders))
-      .pluck(:enterprise_id)
-  end
-
-  def enterprise_fee_ids(orders)
-    Spree::Adjustment.enterprise_fee
-      .where(order_id: orders.map(&:id))
-      .pluck(:originator_id)
-  end
-
   def datepicker_time(datetime)
     datetime = Time.zone.parse(datetime) if datetime.is_a? String
     datetime.strftime('%Y-%m-%d %H:%M')
diff --git a/app/models/spree/ability.rb b/app/models/spree/ability.rb
index 63833e309f..4695559945 100644
--- a/app/models/spree/ability.rb
+++ b/app/models/spree/ability.rb
@@ -6,6 +6,11 @@ module Spree
   class Ability
     include CanCan::Ability
 
+    REPORTS_SEARCH_ACTIONS = [
+      :search_enterprise_fees, :search_enterprise_fee_owners, :search_distributors,
+      :search_suppliers, :search_order_cycles, :search_order_customers
+    ].freeze
+
     def initialize(user)
       clear_aliased_actions
 
@@ -260,7 +265,8 @@ module Spree
       can [:admin, :index, :import], ::Admin::DfcProductImportsController
 
       # Reports page
-      can [:admin, :index, :show, :create], ::Admin::ReportsController
+      can [:admin, :index, :show, :create, *REPORTS_SEARCH_ACTIONS],
+          ::Admin::ReportsController
       can [:admin, :show, :create, :customers, :orders_and_distributors, :group_buys, :payments,
            :orders_and_fulfillment, :products_and_inventory, :order_cycle_management,
            :packing, :enterprise_fee_summary, :bulk_coop, :suppliers], :report
@@ -392,7 +398,7 @@ module Spree
       end
 
       # Reports page
-      can [:admin, :index, :show, :create], ::Admin::ReportsController
+      can [:admin, :index, :show, :create, *REPORTS_SEARCH_ACTIONS], ::Admin::ReportsController
       can [:admin, :customers, :group_buys, :sales_tax, :payments,
            :orders_and_distributors, :orders_and_fulfillment, :products_and_inventory,
            :order_cycle_management, :xero_invoices, :enterprise_fee_summary, :bulk_coop], :report
diff --git a/app/views/admin/reports/filters/_enterprise_fees_with_tax_report_by_order.html.haml b/app/views/admin/reports/filters/_enterprise_fees_with_tax_report_by_order.html.haml
index 4a3af1ef5d..c3aa10070e 100644
--- a/app/views/admin/reports/filters/_enterprise_fees_with_tax_report_by_order.html.haml
+++ b/app/views/admin/reports/filters/_enterprise_fees_with_tax_report_by_order.html.haml
@@ -1,23 +1,50 @@
+- search_url_query = {report_type: :enterprise_fee_summary, report_subtype: :enterprise_fees_with_tax_report_by_order}
 .row
   .alpha.two.columns= label_tag nil, t(:report_hubs)
-  .omega.fourteen.columns= f.collection_select(:distributor_id_in, @data.distributors, :id, :name, {}, {class: "select2 fullwidth", multiple: true})
+  .omega.fourteen.columns
+    = render(SearchableDropdownComponent.new(form: f,
+      name: :distributor_id_in,
+      options: [],
+      selected_option: params.dig(:q, :distributor_id_in),
+      multiple: true,
+      remote_url: admin_reports_search_distributors_url))
 
 .row
   .alpha.two.columns= label_tag nil, t(:report_customers_cycle)
   .omega.fourteen.columns
-    = f.select(:order_cycle_id_in, report_order_cycle_options(@data.order_cycles), {selected: params.dig(:q, :order_cycle_id_in)}, {class: "select2 fullwidth", multiple: true})
+    = render(SearchableDropdownComponent.new(form: f,
+      name: :order_cycle_id_in,
+      options: [],
+      selected_option: params.dig(:q, :order_cycle_id_in),
+      multiple: true,
+      remote_url: admin_reports_search_order_cycles_url))
 
 .row
   .alpha.two.columns= label_tag nil, t(:fee_name)
   .omega.fourteen.columns
-    = f.select(:enterprise_fee_id_in, fee_name_options(@report.search.result), {selected: params.dig(:q, :enterprise_fee_id_in)}, {class: "select2 fullwidth", multiple: true})
+    = render(SearchableDropdownComponent.new(form: f,
+      name: :enterprise_fee_id_in,
+      options: [],
+      selected_option: params.dig(:q, :enterprise_fee_id_in),
+      multiple: true,
+      remote_url: admin_reports_search_enterprise_fees_url(search_url_query)))
 
 .row
   .alpha.two.columns= label_tag nil, t(:fee_owner)
   .omega.fourteen.columns
-    = f.select(:enterprise_fee_owner_id_in, fee_owner_options(@report.search.result), {selected: params.dig(:q, :enterprise_fee_owner_id_in)}, {class: "select2 fullwidth", multiple: true})
+    = render(SearchableDropdownComponent.new(form: f,
+      name: :enterprise_fee_owner_id_in,
+      options: [],
+      selected_option: params.dig(:q, :enterprise_fee_owner_id_in),
+      multiple: true,
+      remote_url: admin_reports_search_enterprise_fee_owners_url(search_url_query)))
 
 .row
   .alpha.two.columns= label_tag nil, t(:report_customers)
   .omega.fourteen.columns
-    = f.select(:customer_id_in, customer_email_options(@data.order_customers), {selected: params.dig(:q, :customer_id_in)}, {class: "select2 fullwidth", multiple: true})
+    = render(SearchableDropdownComponent.new(form: f,
+      name: :customer_id_in,
+      options: [],
+      selected_option: params.dig(:q, :customer_id_in),
+      multiple: true,
+      remote_url: admin_reports_search_order_customers_url))
diff --git a/app/views/admin/reports/filters/_enterprise_fees_with_tax_report_by_producer.html.haml b/app/views/admin/reports/filters/_enterprise_fees_with_tax_report_by_producer.html.haml
index 1c19788df6..3eb41c1733 100644
--- a/app/views/admin/reports/filters/_enterprise_fees_with_tax_report_by_producer.html.haml
+++ b/app/views/admin/reports/filters/_enterprise_fees_with_tax_report_by_producer.html.haml
@@ -1,27 +1,57 @@
+- search_url_query = {report_type: :enterprise_fee_summary, report_subtype: :enterprise_fees_with_tax_report_by_producer}
 .row
   .alpha.two.columns= label_tag nil, t(:report_hubs)
-  .omega.fourteen.columns= f.collection_select(:distributor_id_in, @data.distributors, :id, :name, {}, {class: "select2 fullwidth", multiple: true})
-
+  .omega.fourteen.columns
+    = render(SearchableDropdownComponent.new(form: f,
+      name: :distributor_id_in,
+      options: [],
+      selected_option: params.dig(:q, :distributor_id_in),
+      multiple: true,
+      remote_url: admin_reports_search_distributors_url))
 .row
   .alpha.two.columns= label_tag nil, t(:report_producers)
-  .omega.fourteen.columns= select_tag(:supplier_id_in, options_from_collection_for_select(@data.orders_suppliers, :id, :name, params[:supplier_id_in]), {class: "select2 fullwidth", multiple: true})
+  .omega.fourteen.columns
+    = render(SearchableDropdownComponent.new(name: :supplier_id_in,
+      options: [],
+      selected_option: params.dig(:supplier_id_in),
+      multiple: true,
+      remote_url: admin_reports_search_suppliers_url))
 
 .row
   .alpha.two.columns= label_tag nil, t(:report_customers_cycle)
   .omega.fourteen.columns
-    = f.select(:order_cycle_id_in, report_order_cycle_options(@data.order_cycles), {selected: params.dig(:q, :order_cycle_id_in)}, {class: "select2 fullwidth", multiple: true})
-
+    = render(SearchableDropdownComponent.new(form: f,
+      name: :order_cycle_id_in,
+      options: [],
+      selected_option: params.dig(:q, :order_cycle_id_in),
+      multiple: true,
+      remote_url: admin_reports_search_order_cycles_url))
 .row
   .alpha.two.columns= label_tag nil, t(:fee_name)
   .omega.fourteen.columns
-    = f.select(:enterprise_fee_id_in, fee_name_options(@report.search.result), {selected: params.dig(:q, :enterprise_fee_id_in)}, {class: "select2 fullwidth", multiple: true})
+    = render(SearchableDropdownComponent.new(form: f,
+      name: :enterprise_fee_id_in,
+      options: [],
+      selected_option: params.dig(:q, :enterprise_fee_id_in),
+      multiple: true,
+      remote_url: admin_reports_search_enterprise_fees_url(search_url_query)))
 
 .row
   .alpha.two.columns= label_tag nil, t(:fee_owner)
   .omega.fourteen.columns
-    = f.select(:enterprise_fee_owner_id_in, fee_owner_options(@report.search.result), {selected: params.dig(:q, :enterprise_fee_owner_id_in)}, {class: "select2 fullwidth", multiple: true})
+    = render(SearchableDropdownComponent.new(form: f,
+      name: :enterprise_fee_owner_id_in,
+      options: [],
+      selected_option: params.dig(:q, :enterprise_fee_owner_id_in),
+      multiple: true,
+      remote_url: admin_reports_search_enterprise_fee_owners_url(search_url_query)))
 
 .row
   .alpha.two.columns= label_tag nil, t(:report_customers)
   .omega.fourteen.columns
-    = f.select(:customer_id_in, customer_email_options(@data.order_customers), {selected: params.dig(:q, :customer_id_in)}, {class: "select2 fullwidth", multiple: true})
+    = render(SearchableDropdownComponent.new(form: f,
+      name: :customer_id_in,
+      options: [],
+      selected_option: params.dig(:q, :customer_id_in),
+      multiple: true,
+      remote_url: admin_reports_search_order_customers_url))
diff --git a/app/webpacker/controllers/tom_select_controller.js b/app/webpacker/controllers/tom_select_controller.js
index d1d3ade58a..3867fa3380 100644
--- a/app/webpacker/controllers/tom_select_controller.js
+++ b/app/webpacker/controllers/tom_select_controller.js
@@ -1,11 +1,16 @@
 import { Controller } from "stimulus";
 import TomSelect from "tom-select/dist/esm/tom-select.complete";
+import showHttpError from "../../webpacker/js/services/show_http_error";
 
 export default class extends Controller {
-  static values = { options: Object, placeholder: String };
+  static values = {
+    options: Object,
+    placeholder: String,
+    remoteUrl: String,
+  };
 
   connect(options = {}) {
-    this.control = new TomSelect(this.element, {
+    let tomSelectOptions = {
       maxItems: 1,
       maxOptions: null,
       plugins: ["dropdown_input"],
@@ -16,7 +21,13 @@ export default class extends Controller {
       },
       ...this.optionsValue,
       ...options,
-    });
+    };
+
+    if (this.remoteUrlValue) {
+      this.#addRemoteOptions(tomSelectOptions);
+    }
+
+    this.control = new TomSelect(this.element, tomSelectOptions);
   }
 
   disconnect() {
@@ -29,4 +40,78 @@ export default class extends Controller {
     const optionsArray = [...this.element.options];
     return optionsArray.find((option) => [null, ""].includes(option.value))?.text;
   }
+
+  #buildUrl(query, page = 1) {
+    const url = new URL(this.remoteUrlValue, window.location.origin);
+    url.searchParams.set("q", query);
+    url.searchParams.set("page", page);
+    return url.toString();
+  }
+
+  #fetchOptions(query, callback) {
+    const url = this.control.getUrl(query);
+
+    fetch(url)
+      .then((response) => {
+        if (!response.ok) {
+          showHttpError(response.status);
+          throw response;
+        }
+        return response.json();
+      })
+      .then((json) => {
+        /**
+         * Expected API shape:
+         * {
+         *   results: [{ value, label }],
+         *   pagination: { more: boolean }
+         * }
+         */
+        if (json.pagination?.more) {
+          const currentUrl = new URL(url);
+          const currentPage = parseInt(currentUrl.searchParams.get("page") || "1");
+          const nextUrl = this.#buildUrl(query, currentPage + 1);
+          this.control.setNextUrl(query, nextUrl);
+        }
+
+        callback(json.results || []);
+      })
+      .catch((error) => {
+        callback();
+        console.error(error);
+      });
+  }
+
+  #addRemoteOptions(options) {
+    this.openedByClick = false;
+
+    options.firstUrl = (query) => {
+      return this.#buildUrl(query, 1);
+    };
+
+    options.load = this.#fetchOptions.bind(this);
+
+    options.onFocus = function () {
+      this.control.load("", () => {});
+    }.bind(this);
+
+    options.onDropdownOpen = function () {
+      this.openedByClick = true;
+    }.bind(this);
+
+    options.onType = function () {
+      this.openedByClick = false;
+    }.bind(this);
+
+    // As per TomSelect source code, Loading state is shown on the UI when this function returns true.
+    // By default it shows loading state only when there is some input in the search box.
+    // We want to show loading state on focus as well (when there is no input) to indicate that options are being loaded.
+    options.shouldLoad = function (query) {
+      return this.openedByClick || query.length > 0;
+    }.bind(this);
+
+    options.valueField = "value";
+    options.labelField = "label";
+    options.searchField = "label";
+  }
 }
diff --git a/config/routes/admin.rb b/config/routes/admin.rb
index b80d340bd4..305ef999f6 100644
--- a/config/routes/admin.rb
+++ b/config/routes/admin.rb
@@ -136,7 +136,15 @@ Openfoodnetwork::Application.routes.draw do
       put :resume, on: :member, format: :json
     end
 
-    get '/reports', to: 'reports#index', as: :reports
+    scope :reports, as: :reports do
+      get '/', to: 'reports#index'
+      get '/search_enterprise_fees', to: 'reports#search_enterprise_fees', as: :search_enterprise_fees
+      get '/search_enterprise_fee_owners', to: 'reports#search_enterprise_fee_owners', as: :search_enterprise_fee_owners
+      get '/search_distributors', to: 'reports#search_distributors', as: :search_distributors
+      get '/search_suppliers', to: 'reports#search_suppliers', as: :search_suppliers
+      get '/search_order_cycles', to: 'reports#search_order_cycles', as: :search_order_cycles
+      get '/search_order_customers', to: 'reports#search_order_customers', as: :search_order_customers
+    end
     match '/reports/:report_type(/:report_subtype)', to: 'reports#show', via: :get, as: :report
     match '/reports/:report_type(/:report_subtype)', to: 'reports#create', via: :post
   end
diff --git a/jest.config.js b/jest.config.js
index 99c9c31e3b..2e451b9051 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -179,7 +179,7 @@ module.exports = {
   // transform: { "\\.[jt]sx?$": "babel-jest" },
 
   // An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
-  transformIgnorePatterns: ["/node_modules/(?!stimulus)/"],
+  transformIgnorePatterns: ["/node_modules/(?!(stimulus.+|tom-select)/)"],
 
   // An array of regexp pattern strings that are matched against all modules before the module loader will automatically return a mock for them
   // unmockedModulePathPatterns: undefined,
diff --git a/lib/reporting/frontend_data.rb b/lib/reporting/frontend_data.rb
index 5a1152d4a2..682e071fb1 100644
--- a/lib/reporting/frontend_data.rb
+++ b/lib/reporting/frontend_data.rb
@@ -46,7 +46,7 @@ module Reporting
     end
 
     def order_customers
-      Customer.where(id: visible_order_customer_ids).select("customers.id, customers.email")
+      Customer.where(id: visible_order_customer_ids_query).select("customers.id, customers.email")
     end
 
     private
@@ -57,8 +57,8 @@ module Reporting
       @permissions ||= OpenFoodNetwork::Permissions.new(current_user)
     end
 
-    def visible_order_customer_ids
-      Permissions::Order.new(current_user).visible_orders.pluck(:customer_id)
+    def visible_order_customer_ids_query
+      Permissions::Order.new(current_user).visible_orders.select(:customer_id)
     end
   end
 end
diff --git a/spec/javascripts/stimulus/tom_select_controller_test.js b/spec/javascripts/stimulus/tom_select_controller_test.js
new file mode 100644
index 0000000000..4f4705e222
--- /dev/null
+++ b/spec/javascripts/stimulus/tom_select_controller_test.js
@@ -0,0 +1,296 @@
+/**
+ * @jest-environment jsdom
+ */
+
+import { Application } from "stimulus";
+import { fireEvent, waitFor } from "@testing-library/dom";
+import tom_select_controller from "controllers/tom_select_controller";
+import showHttpError from "js/services/show_http_error";
+
+jest.mock("js/services/show_http_error", () => ({
+  __esModule: true,
+  default: jest.fn(),
+}));
+
+/* ------------------------------------------------------------------
+ * Helpers
+ * ------------------------------------------------------------------ */
+
+const buildResults = (count, start = 1) =>
+  Array.from({ length: count }, (_, i) => ({
+    value: String(start + i),
+    label: `Option ${start + i}`,
+  }));
+
+const setupDOM = (html) => {
+  document.body.innerHTML = html;
+};
+
+const getSelect = () => document.getElementById("select");
+const getTomSelect = () => getSelect().tomselect;
+
+const openDropdown = () => fireEvent.click(document.getElementById("select-ts-control"));
+
+const mockRemoteFetch = (...responses) => {
+  responses.forEach((response) => {
+    fetch.mockResolvedValueOnce({
+      ok: true,
+      json: async () => response,
+    });
+  });
+};
+
+const mockDropdownScroll = (
+  dropdown,
+  { scrollHeight = 1000, clientHeight = 300, scrollTop = 700 } = {},
+) => {
+  Object.defineProperty(dropdown, "scrollHeight", {
+    configurable: true,
+    value: scrollHeight,
+  });
+
+  Object.defineProperty(dropdown, "clientHeight", {
+    configurable: true,
+    value: clientHeight,
+  });
+
+  Object.defineProperty(dropdown, "scrollTop", {
+    configurable: true,
+    writable: true,
+    value: scrollTop,
+  });
+
+  fireEvent.scroll(dropdown);
+};
+
+/* ------------------------------------------------------------------
+ * Expectation helpers
+ * ------------------------------------------------------------------ */
+
+const expectOptionsCount = (count) => {
+  expect(document.querySelectorAll('.ts-dropdown-content [role="option"]').length).toBe(count);
+};
+
+const expectDropdownToContain = (text) => {
+  expect(document.querySelector(".ts-dropdown-content")?.textContent).toContain(text);
+};
+
+const expectDropdownWithNoResults = () => {
+  expect(document.querySelector(".ts-dropdown-content")?.textContent).toBe("No results found");
+};
+
+/* ------------------------------------------------------------------
+ * Specs
+ * ------------------------------------------------------------------ */
+
+describe("TomSelectController", () => {
+  let application;
+
+  beforeAll(() => {
+    application = Application.start();
+    application.register("tom-select", tom_select_controller);
+  });
+
+  beforeEach(() => {
+    global.fetch = jest.fn();
+    global.I18n = { t: (key) => key };
+  });
+
+  afterEach(() => {
+    document.body.innerHTML = "";
+    jest.clearAllMocks();
+  });
+
+  describe("connect()", () => {
+    beforeEach(() => {
+      setupDOM(`
+        <select id="select" data-controller="tom-select">
+          <option value="">Default Option</option>
+          <option value="1">Option 1</option>
+          <option value="2">Option 2</option>
+        </select>
+      `);
+    });
+
+    it("initializes TomSelect with default options", () => {
+      const settings = getTomSelect().settings;
+
+      expect(settings.placeholder).toBe("Default Option");
+      expect(settings.maxItems).toBe(1);
+      expect(settings.plugins).toEqual(["dropdown_input"]);
+      expect(settings.allowEmptyOption).toBe(true);
+    });
+  });
+
+  describe("connect() with custom values", () => {
+    beforeEach(() => {
+      setupDOM(`
+        <select
+          id="select"
+          data-controller="tom-select"
+          data-tom-select-placeholder-value="Choose an option"
+          data-tom-select-options-value='{"maxItems": 3, "plugins": ["remove_button"]}'
+        >
+          <option value="1">Option 1</option>
+          <option value="2">Option 2</option>
+        </select>
+      `);
+    });
+
+    it("applies custom placeholder and options", () => {
+      const settings = getTomSelect().settings;
+
+      expect(settings.placeholder).toBe("Choose an option");
+      expect(settings.maxItems).toBe(3);
+      expect(settings.plugins).toEqual(["remove_button"]);
+    });
+  });
+
+  describe("connect() with remoteUrl", () => {
+    beforeEach(() => {
+      setupDOM(`
+        <select
+          id="select"
+          data-controller="tom-select"
+          data-tom-select-options-value='{"plugins":["virtual_scroll"]}'
+          data-tom-select-remote-url-value="https://ofn-tests.com/api/search"
+        ></select>
+      `);
+    });
+
+    it("configures remote loading callbacks", () => {
+      const settings = getTomSelect().settings;
+
+      expect(settings.valueField).toBe("value");
+      expect(settings.labelField).toBe("label");
+      expect(settings.searchField).toBe("label");
+      expect(settings.load).toEqual(expect.any(Function));
+      expect(settings.firstUrl).toEqual(expect.any(Function));
+      expect(settings.onFocus).toEqual(expect.any(Function));
+    });
+
+    it("fetches page 1 on focus", async () => {
+      mockRemoteFetch({
+        results: buildResults(1),
+        pagination: { more: false },
+      });
+
+      openDropdown();
+
+      await waitFor(() => expect(fetch).toHaveBeenCalledTimes(1));
+
+      expect(fetch).toHaveBeenCalledWith(expect.stringContaining("q=&page=1"));
+
+      await waitFor(() => {
+        expectOptionsCount(1);
+        expectDropdownToContain("Option 1");
+      });
+    });
+
+    it("fetches remote options using search query", async () => {
+      const appleOption = { value: "apple", label: "Apple" };
+      mockRemoteFetch({
+        results: [...buildResults(1), appleOption],
+        pagination: { more: false },
+      });
+
+      openDropdown();
+
+      await waitFor(() => {
+        expectOptionsCount(2);
+      });
+
+      mockRemoteFetch({
+        results: [appleOption],
+        pagination: { more: false },
+      });
+
+      fireEvent.input(document.getElementById("select-ts-control"), {
+        target: { value: "apple" },
+      });
+
+      await waitFor(() =>
+        expect(fetch).toHaveBeenCalledWith(expect.stringContaining("q=apple&page=1")),
+      );
+
+      await waitFor(() => {
+        expectOptionsCount(1);
+        expectDropdownToContain("Apple");
+      });
+    });
+
+    it("loads next page on scroll (infinite scroll)", async () => {
+      mockRemoteFetch(
+        {
+          results: buildResults(30),
+          pagination: { more: true },
+        },
+        {
+          results: buildResults(1, 31),
+          pagination: { more: false },
+        },
+      );
+
+      openDropdown();
+
+      await waitFor(() => {
+        expectOptionsCount(30);
+      });
+
+      const dropdown = document.querySelector(".ts-dropdown-content");
+      mockDropdownScroll(dropdown);
+
+      await waitFor(() => {
+        expectOptionsCount(31);
+      });
+
+      expect(fetch).toHaveBeenCalledTimes(2);
+    });
+
+    it("handles fetch errors gracefully", async () => {
+      fetch.mockRejectedValueOnce(new Error("Fetch error"));
+
+      openDropdown();
+
+      await waitFor(() => {
+        expectDropdownWithNoResults();
+      });
+
+      expect(showHttpError).not.toHaveBeenCalled();
+    });
+
+    it("displays HTTP error on failure", async () => {
+      fetch.mockResolvedValueOnce({
+        ok: false,
+        status: 500,
+        json: async () => ({}),
+      });
+
+      openDropdown();
+
+      await waitFor(() => {
+        expect(showHttpError).toHaveBeenCalledWith(500);
+      });
+
+      expectDropdownWithNoResults();
+    });
+
+    it("controls loading behavior based on user interaction", () => {
+      const settings = getTomSelect().settings;
+
+      // Initial state: openedByClick is false, query is empty
+      expect(settings.shouldLoad("")).toBe(false);
+
+      // Simulating opening the dropdown
+      settings.onDropdownOpen();
+      expect(settings.shouldLoad("")).toBe(true);
+
+      // Simulating typing
+      settings.onType();
+      expect(settings.shouldLoad("")).toBe(false);
+
+      // Query present
+      expect(settings.shouldLoad("a")).toBe(true);
+    });
+  });
+});
diff --git a/spec/requests/admin/reports_ajax_api_spec.rb b/spec/requests/admin/reports_ajax_api_spec.rb
new file mode 100644
index 0000000000..cb4f50c0c2
--- /dev/null
+++ b/spec/requests/admin/reports_ajax_api_spec.rb
@@ -0,0 +1,328 @@
+# frozen_string_literal: true
+
+RSpec.describe "Admin Reports AJAX Search API" do
+  let(:bill_address) { create(:address) }
+  let(:ship_address) { create(:address) }
+  let(:instructions) { "pick up on thursday please" }
+  let(:coordinator1) { create(:distributor_enterprise) }
+  let(:supplier1) { create(:supplier_enterprise) }
+  let(:supplier2) { create(:supplier_enterprise) }
+  let(:supplier3) { create(:supplier_enterprise) }
+  let(:distributor1) { create(:distributor_enterprise) }
+  let(:distributor2) { create(:distributor_enterprise) }
+  let(:product1) { create(:product, price: 12.34, supplier_id: supplier1.id) }
+  let(:product2) { create(:product, price: 23.45, supplier_id: supplier2.id) }
+  let(:product3) { create(:product, price: 34.56, supplier_id: supplier3.id) }
+
+  let(:enterprise_fee1) { create(:enterprise_fee, name: "Delivery Fee", enterprise: distributor1) }
+  let(:enterprise_fee2) { create(:enterprise_fee, name: "Admin Fee", enterprise: distributor2) }
+
+  let(:ocA) {
+    create(:simple_order_cycle, coordinator: coordinator1,
+                                distributors: [distributor1, distributor2],
+                                suppliers: [supplier1, supplier2, supplier3],
+                                variants: [product1.variants.first, product3.variants.first])
+  }
+  let(:ocB) {
+    create(:simple_order_cycle, coordinator: coordinator1,
+                                distributors: [distributor1, distributor2],
+                                suppliers: [supplier1, supplier2, supplier3],
+                                variants: [product2.variants.first])
+  }
+
+  let(:orderA1) do
+    order = create(:order, distributor: distributor1, bill_address:,
+                           ship_address:, special_instructions: instructions,
+                           order_cycle: ocA)
+    order.line_items << create(:line_item, variant: product1.variants.first)
+    order.line_items << create(:line_item, variant: product3.variants.first)
+    order.finalize!
+    order.save
+    order
+  end
+
+  let(:orderA2) do
+    order = create(:order, distributor: distributor2, bill_address:,
+                           ship_address:, special_instructions: instructions,
+                           order_cycle: ocA)
+    order.line_items << create(:line_item, variant: product2.variants.first)
+    order.finalize!
+    order.save
+    order
+  end
+
+  let(:orderB1) do
+    order = create(:order, distributor: distributor1, bill_address:,
+                           ship_address:, special_instructions: instructions,
+                           order_cycle: ocB)
+    order.line_items << create(:line_item, variant: product1.variants.first)
+    order.line_items << create(:line_item, variant: product3.variants.first)
+    order.finalize!
+    order.save
+    order
+  end
+
+  let(:base_params) do
+    {
+      report_type: :enterprise_fee_summary,
+      report_subtype: :enterprise_fees_with_tax_report_by_order
+    }
+  end
+
+  def create_adjustment(order, fee, amount)
+    order.adjustments.create!(
+      originator: fee,
+      label: fee.name,
+      amount:,
+      state: "finalized",
+      order:
+    )
+  end
+
+  context "when user is an admin" do
+    before do
+      login_as create(:admin_user)
+      create_adjustment(orderA1, enterprise_fee1, 5.0)
+      create_adjustment(orderB1, enterprise_fee2, 3.0)
+    end
+
+    describe "GET /admin/reports/search_enterprise_fees" do
+      it "returns enterprise fees sorted alphabetically by name" do
+        get "/admin/reports/search_enterprise_fees", params: base_params
+
+        expect(response).to have_http_status(:ok)
+        json_response = response.parsed_body
+
+        expect(json_response["results"].pluck("label")).to eq(['Admin Fee', 'Delivery Fee'])
+        expect(json_response["pagination"]["more"]).to be false
+      end
+
+      context "with more than 30 records" do
+        before do
+          create_list(:enterprise_fee, 35, enterprise: distributor1) do |fee, i|
+            index = (i + 1).to_s.rjust(2, "0")
+            fee.update!(name: "Fee #{index}")
+            create_adjustment(orderA1, fee, 1.0)
+          end
+        end
+
+        it "returns first page with 30 results and more flag as true" do
+          get "/admin/reports/search_enterprise_fees", params: base_params.merge(page: 1)
+
+          json_response = response.parsed_body
+          expect(json_response["results"].length).to eq(30)
+          expect(json_response["pagination"]["more"]).to be true
+        end
+
+        it "returns remaining results on second page with more flag as false" do
+          get "/admin/reports/search_enterprise_fees", params: base_params.merge(page: 2)
+
+          json_response = response.parsed_body
+          expect(json_response["results"].length).to eq(7)
+          expect(json_response["pagination"]["more"]).to be false
+        end
+      end
+    end
+
+    describe "GET /admin/reports/search_enterprise_fee_owners" do
+      it "returns unique enterprise fee owners sorted alphabetically by name" do
+        distributor1.update!(name: "Zebra Farm")
+        distributor2.update!(name: "Alpha Market")
+
+        get "/admin/reports/search_enterprise_fee_owners", params: base_params
+
+        expect(response).to have_http_status(:ok)
+        json_response = response.parsed_body
+
+        expect(json_response["results"].pluck("label")).to eq(['Alpha Market', 'Zebra Farm'])
+        expect(json_response["pagination"]["more"]).to be false
+      end
+    end
+
+    describe "GET /admin/reports/search_order_customers" do
+      let!(:customer1) { create(:customer, email: "alice@example.com", enterprise: distributor1) }
+      let!(:customer2) { create(:customer, email: "bob@example.com", enterprise: distributor1) }
+
+      before do
+        orderA1.update!(customer: customer1)
+        orderA2.update!(customer: customer2)
+      end
+
+      it "returns all customers sorted by email" do
+        get "/admin/reports/search_order_customers", params: base_params
+
+        json_response = response.parsed_body
+        expect(json_response["results"].pluck("label")).to eq(["alice@example.com",
+                                                               "bob@example.com"])
+        expect(json_response["pagination"]["more"]).to be false
+      end
+
+      it "filters customers by email query" do
+        get "/admin/reports/search_order_customers", params: base_params.merge(q: "alice")
+
+        json_response = response.parsed_body
+        expect(json_response["results"].pluck("label")).to eq(["alice@example.com"])
+        expect(json_response["pagination"]["more"]).to be false
+      end
+
+      context "with more than 30 customers" do
+        before do
+          create_list(:customer, 35, enterprise: distributor1) do |customer, i|
+            customer.update!(email: "customer#{(i + 1).to_s.rjust(2, '0')}@example.com")
+            order = create(:order, distributor: distributor1, order_cycle: ocA, customer:)
+            order.line_items << create(:line_item, variant: product1.variants.first)
+            order.finalize!
+          end
+        end
+
+        it "returns first page with 30 results and more flag as true" do
+          get "/admin/reports/search_order_customers", params: base_params.merge(page: 1)
+
+          json_response = response.parsed_body
+          expect(json_response["results"].length).to eq(30)
+          expect(json_response["pagination"]["more"]).to be true
+        end
+
+        it "returns remaining results on second page with more flag as false" do
+          get "/admin/reports/search_order_customers", params: base_params.merge(page: 2)
+
+          json_response = response.parsed_body
+          expect(json_response["results"].length).to eq(7)
+          expect(json_response["pagination"]["more"]).to be false
+        end
+      end
+    end
+
+    describe "GET /admin/reports/search_order_cycles" do
+      before do
+        ocA.update!(name: "Winter Market")
+        ocB.update!(name: "Summer Market")
+      end
+
+      it "returns order cycles sorted by close date" do
+        get "/admin/reports/search_order_cycles", params: base_params
+
+        json_response = response.parsed_body
+        expect(json_response["results"].pluck("label")).to eq(["Summer Market", "Winter Market"])
+        expect(json_response["pagination"]["more"]).to be false
+      end
+
+      it "filters order cycles by name query" do
+        get "/admin/reports/search_order_cycles", params: base_params.merge(q: "Winter")
+
+        json_response = response.parsed_body
+        expect(json_response["results"].pluck("label")).to eq(["Winter Market"])
+        expect(json_response["pagination"]["more"]).to be false
+      end
+    end
+
+    describe "GET /admin/reports/search_distributors" do
+      before do
+        distributor1.update!(name: "Alpha Farm")
+        distributor2.update!(name: "Beta Market")
+      end
+
+      it "filters distributors by name query" do
+        get "/admin/reports/search_distributors", params: base_params.merge(q: "Alpha")
+
+        json_response = response.parsed_body
+        expect(json_response["results"].pluck("label")).to eq(["Alpha Farm"])
+        expect(json_response["pagination"]["more"]).to be false
+      end
+
+      context "with more than 30 distributors" do
+        before { create_list(:distributor_enterprise, 35) }
+
+        it "returns first page with 30 results and more flag as true" do
+          get "/admin/reports/search_distributors", params: base_params.merge(page: 1)
+
+          json_response = response.parsed_body
+          expect(json_response["results"].length).to eq(30)
+          expect(json_response["pagination"]["more"]).to be true
+        end
+
+        it "returns remaining results on subsequent pages with more flag as false" do
+          get "/admin/reports/search_distributors", params: base_params.merge(page: 2)
+
+          json_response = response.parsed_body
+          expect(json_response["results"].length).to be > 0
+          expect(json_response["pagination"]["more"]).to be false
+        end
+      end
+    end
+  end
+
+  context "when user is not an admin" do
+    before do
+      login_as distributor1.users.first
+      create_adjustment(orderA1, enterprise_fee1, 5.0)
+      create_adjustment(orderA2, enterprise_fee2, 3.0)
+    end
+
+    describe "GET /admin/reports/search_enterprise_fees" do
+      it "returns only enterprise fees for user's managed enterprises" do
+        get "/admin/reports/search_enterprise_fees", params: base_params
+
+        expect(response).to have_http_status(:ok)
+        json_response = response.parsed_body
+
+        expect(json_response["results"].pluck("label")).to eq(['Delivery Fee'])
+        expect(json_response["pagination"]["more"]).to be false
+      end
+    end
+
+    describe "GET /admin/reports/search_enterprise_fee_owners" do
+      it "returns only enterprise fee owners for user's managed enterprises" do
+        get "/admin/reports/search_enterprise_fee_owners", params: base_params
+
+        expect(response).to have_http_status(:ok)
+        json_response = response.parsed_body
+
+        expect(json_response["results"].pluck("label")).to eq([distributor1.name])
+        expect(json_response["pagination"]["more"]).to be false
+      end
+    end
+
+    describe "GET /admin/reports/search_order_customers" do
+      it "returns only customers from user's managed enterprises" do
+        customer1 = create(:customer, email: "alice@example.com", enterprise: distributor1)
+        customer2 = create(:customer, email: "bob@example.com", enterprise: distributor1)
+        orderA1.update!(customer: customer1)
+        orderA2.update!(customer: customer2)
+
+        get "/admin/reports/search_order_customers", params: base_params
+
+        json_response = response.parsed_body
+        expect(json_response["results"].pluck("label")).to eq(["alice@example.com"])
+        expect(json_response["pagination"]["more"]).to be false
+      end
+    end
+
+    describe "GET /admin/reports/search_order_cycles" do
+      it "returns only order cycles accessible to user's managed enterprises" do
+        ocA.update!(name: "Winter Market")
+        ocB.update!(name: "Summer Market")
+        create(:simple_order_cycle, name: 'Autumn Market', coordinator: coordinator1,
+                                    distributors: [distributor2],
+                                    suppliers: [supplier1, supplier2, supplier3],
+                                    variants: [product2.variants.first])
+
+        get "/admin/reports/search_order_cycles", params: base_params
+
+        json_response = response.parsed_body
+        expect(json_response["results"].pluck("label")).to eq(["Summer Market", "Winter Market"])
+        expect(json_response["pagination"]["more"]).to be false
+      end
+    end
+
+    describe "GET /admin/reports/search_distributors" do
+      it "returns only user's managed distributors" do
+        get "/admin/reports/search_distributors", params: base_params
+
+        json_response = response.parsed_body
+        expect(json_response["results"].pluck("label")).to eq([distributor1.name])
+        expect(json_response["pagination"]["more"]).to be false
+      end
+    end
+  end
+end
diff --git a/spec/system/admin/reports/enterprise_summary_fees/enterprise_summary_fee_with_tax_report_by_producer_spec.rb b/spec/system/admin/reports/enterprise_summary_fees/enterprise_summary_fee_with_tax_report_by_producer_spec.rb
index 002e0a7247..2218908fac 100644
--- a/spec/system/admin/reports/enterprise_summary_fees/enterprise_summary_fee_with_tax_report_by_producer_spec.rb
+++ b/spec/system/admin/reports/enterprise_summary_fees/enterprise_summary_fee_with_tax_report_by_producer_spec.rb
@@ -296,11 +296,8 @@ RSpec.describe "Enterprise Summary Fee with Tax Report By Producer" do
           end
 
           it "should filter by distributor and order cycle" do
-            page.find("#s2id_autogen1").click
-            find('li', text: distributor.name).click # selects Distributor
-
-            page.find("#s2id_q_order_cycle_id_in").click
-            find('li', text: order_cycle.name).click
+            tomselect_multiselect distributor.name, from: 'q[distributor_id_in][]'
+            tomselect_multiselect order_cycle.name, from: 'q[order_cycle_id_in][]'
 
             run_report
             expect(page.find("table.report__table thead tr")).to have_content(table_header)
@@ -455,9 +452,6 @@ RSpec.describe "Enterprise Summary Fee with Tax Report By Producer" do
         }
 
         context "filtering" do
-          let(:fee_name_selector){ "#s2id_q_enterprise_fee_id_in" }
-          let(:fee_owner_selector){ "#s2id_q_enterprise_fee_owner_id_in" }
-
           let(:summary_row_after_filtering_by_fee_name){
             [cost_of_produce1, "TOTAL", "120.0", "4.8", "124.8"].join(" ")
           }
@@ -471,11 +465,8 @@ RSpec.describe "Enterprise Summary Fee with Tax Report By Producer" do
           end
 
           it "should filter by distributor and order cycle" do
-            page.find("#s2id_autogen1").click
-            find('li', text: distributor.name).click # selects Distributor
-
-            page.find("#s2id_q_order_cycle_id_in").click
-            find('li', text: order_cycle3.name).click
+            tomselect_multiselect distributor.name, from: 'q[distributor_id_in][]'
+            tomselect_multiselect order_cycle3.name, from: 'q[order_cycle_id_in][]'
 
             run_report
             expect(page.find("table.report__table thead tr")).to have_content(table_header)
@@ -504,8 +495,7 @@ RSpec.describe "Enterprise Summary Fee with Tax Report By Producer" do
           end
 
           it "should filter by producer" do
-            page.find("#s2id_supplier_id_in").click
-            find('li', text: supplier2.name).click
+            tomselect_multiselect supplier2.name, from: 'supplier_id_in[]'
 
             run_report
             expect(page.find("table.report__table thead tr")).to have_content(table_header)
@@ -528,8 +518,7 @@ RSpec.describe "Enterprise Summary Fee with Tax Report By Producer" do
           end
 
           it "should filter by fee name" do
-            page.find(fee_name_selector).click
-            find('li', text: supplier_fees.name).click
+            tomselect_multiselect supplier_fees.name, from: 'q[enterprise_fee_id_in][]'
 
             run_report
 
@@ -557,8 +546,7 @@ RSpec.describe "Enterprise Summary Fee with Tax Report By Producer" do
           end
 
           it "should filter by fee owner" do
-            page.find(fee_owner_selector).click
-            find('li', text: supplier.name).click
+            tomselect_multiselect supplier.name, from: 'q[enterprise_fee_owner_id_in][]'
 
             run_report
             expect(page.find("table.report__table thead tr")).to have_content(table_header)