diff --git a/spec/controllers/admin/reports_controller_spec.rb b/spec/controllers/admin/reports_controller_spec.rb
index d0b6104d8c..2f6404cba6 100644
--- a/spec/controllers/admin/reports_controller_spec.rb
+++ b/spec/controllers/admin/reports_controller_spec.rb
@@ -370,4 +370,153 @@ RSpec.describe Admin::ReportsController do
       end
     end
   end
+
+  context "AJAX Search" do
+    let(:enterprise_fee1) {
+      create(:enterprise_fee, name: "Delivery Fee", enterprise: distributor1)
+    }
+    let(:enterprise_fee2) { create(:enterprise_fee, name: "Admin Fee", enterprise: distributor2) }
+
+    before do
+      controller_login_as_admin
+      orderA1.adjustments.create!(
+        originator: enterprise_fee1,
+        label: "Delivery Fee",
+        amount: 5.0,
+        state: "finalized",
+        order: orderA1
+      )
+      orderB1.adjustments.create!(
+        originator: enterprise_fee2,
+        label: "Admin Fee",
+        amount: 3.0,
+        state: "finalized",
+        order: orderB1
+      )
+    end
+
+    describe "#search_enterprise_fees" do
+      it "returns paginated JSON with enterprise fees ordered by name" do
+        spree_get(
+          :search_enterprise_fees,
+          report_type: :enterprise_fee_summary,
+          report_subtype: :enterprise_fees_with_tax_report_by_order
+        )
+
+        expect(response).to have_http_status(:ok)
+        json_response = response.parsed_body
+
+        names = json_response["results"].pluck("text")
+        expect(names).to eq(['Admin Fee', 'Delivery Fee'])
+      end
+
+      it "caches and works with different report types" do
+        spree_get(
+          :search_enterprise_fees,
+          report_type: :enterprise_fee_summary,
+          report_subtype: :enterprise_fees_with_tax_report_by_order
+        )
+        first_response = response.parsed_body
+
+        spree_get(
+          :search_enterprise_fees,
+          report_type: :enterprise_fee_summary,
+          report_subtype: :enterprise_fees_with_tax_report_by_order
+        )
+        second_response = response.parsed_body
+
+        expect(first_response).to eq(second_response)
+      end
+    end
+
+    describe "#search_enterprise_fee_owners" do
+      it "returns paginated JSON with unique enterprise owners ordered by name" do
+        distributor1.update!(name: "Zebra Farm")
+        distributor2.update!(name: "Alpha Market")
+
+        spree_get(
+          :search_enterprise_fee_owners,
+          report_type: :enterprise_fee_summary,
+          report_subtype: :enterprise_fees_with_tax_report_by_order
+        )
+
+        expect(response).to have_http_status(:ok)
+        json_response = response.parsed_body
+
+        names = json_response["results"].pluck("text")
+        expect(names).to eq(['Alpha Market', 'Zebra Farm'])
+      end
+
+      it "caches results" do
+        spree_get(
+          :search_enterprise_fee_owners,
+          report_type: :enterprise_fee_summary,
+          report_subtype: :enterprise_fees_with_tax_report_by_order
+        )
+        first_response = response.parsed_body
+
+        spree_get(
+          :search_enterprise_fee_owners,
+          report_type: :enterprise_fee_summary,
+          report_subtype: :enterprise_fees_with_tax_report_by_order
+        )
+        second_response = response.parsed_body
+
+        expect(first_response).to eq(second_response)
+      end
+    end
+
+    describe "#search_order_customers" do
+      it "filters customers by email and returns paginated results" 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)
+
+        spree_get(
+          :search_order_customers,
+          report_type: :enterprise_fee_summary,
+          report_subtype: :enterprise_fees_with_tax_report_by_order,
+          q: "alice"
+        )
+
+        json_response = response.parsed_body
+        expect(json_response["results"].pluck("text")).to eq(["alice@example.com"])
+      end
+    end
+
+    describe "#search_order_cycles" do
+      it "filters order cycles by name and orders by close date" do
+        ocA.update!(name: "Winter Market")
+        ocB.update!(name: "Summer Market")
+
+        spree_get(
+          :search_order_cycles,
+          report_type: :enterprise_fee_summary,
+          report_subtype: :enterprise_fees_with_tax_report_by_order,
+          q: "Winter"
+        )
+
+        json_response = response.parsed_body
+        expect(json_response["results"].pluck("text")).to eq(["Winter Market"])
+      end
+    end
+
+    describe "#search_distributors" do
+      it "filters distributors by name" do
+        distributor1.update!(name: "Alpha Farm")
+        distributor2.update!(name: "Beta Market")
+
+        spree_get(
+          :search_distributors,
+          report_type: :enterprise_fee_summary,
+          report_subtype: :enterprise_fees_with_tax_report_by_order,
+          q: "Alpha"
+        )
+
+        json_response = response.parsed_body
+        expect(json_response["results"].pluck("text")).to eq(["Alpha Farm"])
+      end
+    end
+  end
 end
diff --git a/spec/javascripts/stimulus/select2_ajax_controller_test.js b/spec/javascripts/stimulus/select2_ajax_controller_test.js
new file mode 100644
index 0000000000..3b1d449a7a
--- /dev/null
+++ b/spec/javascripts/stimulus/select2_ajax_controller_test.js
@@ -0,0 +1,156 @@
+/**
+ * @jest-environment jsdom
+ */
+
+import { Application } from "stimulus";
+import select2_ajax_controller from "../../../app/webpacker/controllers/select2_ajax_controller.js";
+
+describe("Select2AjaxController", () => {
+  let select2InitOptions = null;
+  let application;
+
+  beforeAll(() => {
+    application = Application.start();
+    application.register("select2-ajax", select2_ajax_controller);
+  });
+
+  beforeEach(() => {
+    select2InitOptions = null;
+
+    // Mock jQuery and select2
+    const mockVal = jest.fn(function (value) {
+      if (value !== undefined) {
+        this._value = value;
+        return this;
+      }
+      return this._value || "";
+    });
+
+    const mockOn = jest.fn().mockReturnThis();
+
+    const mockSelect2 = jest.fn(function (options) {
+      if (typeof options === "string" && options === "destroy") {
+        return this;
+      }
+      select2InitOptions = options;
+      return this;
+    });
+
+    const jQueryMock = jest.fn((selector) => {
+      let element;
+      if (typeof selector === "string" && selector.startsWith("<input")) {
+        element = document.createElement("input");
+        element.type = "hidden";
+      } else {
+        element = selector;
+      }
+
+      const jqObject = {
+        val: mockVal,
+        trigger: jest.fn().mockReturnThis(),
+        select2: mockSelect2,
+        hasClass: jest.fn().mockReturnValue(false),
+        attr: jest.fn(function (name, value) {
+          if (value !== undefined && element) {
+            element.setAttribute(name, value);
+          }
+          return this;
+        }),
+        on: mockOn,
+        0: element,
+        _value: "",
+      };
+
+      return jqObject;
+    });
+
+    jQueryMock.fn = { select2: jest.fn() };
+    global.$ = jQueryMock;
+
+    document.body.innerHTML = `
+      <select 
+        id="test-select" 
+        name="test_name[]"
+        data-controller="select2-ajax" 
+        data-select2-ajax-url-value="/api/search">
+        <option value="">Select...</option>
+      </select>
+    `;
+  });
+
+  afterEach(() => {
+    document.body.innerHTML = "";
+    delete global.$;
+  });
+
+  describe("#connect", () => {
+    it("initializes select2 with correct AJAX URL", () => {
+      expect(select2InitOptions).not.toBeNull();
+      expect(select2InitOptions.ajax.url).toBe("/api/search");
+    });
+
+    it("configures select2 with correct options", () => {
+      expect(select2InitOptions.ajax.dataType).toBe("json");
+      expect(select2InitOptions.ajax.quietMillis).toBe(300);
+      expect(select2InitOptions.allowClear).toBe(true);
+      expect(select2InitOptions.minimumInputLength).toBe(0);
+      expect(select2InitOptions.width).toBe("100%");
+    });
+
+    it("configures AJAX data function", () => {
+      const dataFunc = select2InitOptions.ajax.data;
+      const result = dataFunc("search term", 2);
+
+      expect(result).toEqual({
+        q: "search term",
+        page: 2,
+      });
+    });
+
+    it("handles empty search term", () => {
+      const dataFunc = select2InitOptions.ajax.data;
+      const result = dataFunc(null, null);
+
+      expect(result).toEqual({
+        q: "",
+        page: 1,
+      });
+    });
+
+    it("configures results function with pagination", () => {
+      const resultsFunc = select2InitOptions.ajax.results;
+      const mockData = {
+        results: [{ id: 1, text: "Item 1" }],
+        pagination: { more: true },
+      };
+
+      const result = resultsFunc(mockData, 1);
+
+      expect(result).toEqual({
+        results: mockData.results,
+        more: true,
+      });
+    });
+
+    it("handles missing pagination", () => {
+      const resultsFunc = select2InitOptions.ajax.results;
+      const mockData = {
+        results: [{ id: 1, text: "Item 1" }],
+      };
+
+      const result = resultsFunc(mockData, 1);
+
+      expect(result).toEqual({
+        results: mockData.results,
+        more: false,
+      });
+    });
+
+    it("configures format functions", () => {
+      const item = { id: 1, text: "Test Item" };
+
+      expect(select2InitOptions.formatResult(item)).toBe("Test Item");
+      expect(select2InitOptions.formatSelection(item)).toBe("Test Item");
+    });
+  });
+});