diff --git a/app/serializers/api/admin/enterprise_serializer.rb b/app/serializers/api/admin/enterprise_serializer.rb
index f189e57fd0..7c29b41e70 100644
--- a/app/serializers/api/admin/enterprise_serializer.rb
+++ b/app/serializers/api/admin/enterprise_serializer.rb
@@ -15,7 +15,7 @@ module Api
                  :terms_and_conditions_file_name, :terms_and_conditions_updated_at,
                  :preferred_invoice_order_by_supplier, :preferred_product_low_stock_display,
                  :visible, :hide_ofn_navigation, :white_label_logo,
-                 :white_label_logo_link
+                 :white_label_logo_link, :external_billing_id
 
       has_one :owner, serializer: Api::Admin::UserSerializer
       has_many :users, serializer: Api::Admin::UserSerializer
diff --git a/config/locales/en.yml b/config/locales/en.yml
index fe96d51f55..8234c52068 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -3198,6 +3198,7 @@ See the %{link} to find out more about %{sitename}'s features and to start using
   report_header_hub_code: Hub Code
   report_header_hub_id: Hub ID
   report_header_hub_business_number: "Hub Business Number"
+  report_header_hub_external_billing_id: "Hub External Billing Id"
   report_header_hub_legal_name: "Hub Legal Name"
   report_header_hub_contact_name: "Hub Contact Name"
   report_header_hub_email: "Hub Public Email"
diff --git a/lib/reporting/reports/revenues_by_hub/base.rb b/lib/reporting/reports/revenues_by_hub/base.rb
index e539c77fed..8b10386a6f 100644
--- a/lib/reporting/reports/revenues_by_hub/base.rb
+++ b/lib/reporting/reports/revenues_by_hub/base.rb
@@ -24,6 +24,7 @@ module Reporting
             hub: proc { |orders| distributor(orders).name },
             hub_id: proc { |orders| distributor(orders).id },
             hub_business_number: proc { |orders| distributor(orders).abn },
+            hub_external_billing_id: proc { |orders| distributor(orders).external_billing_id },
             hub_legal_name: proc { |orders| distributor(orders).business_address&.company },
             hub_contact_name: proc { |orders| distributor(orders).contact_name },
             hub_email: proc { |orders| distributor(orders).email_address },
diff --git a/spec/controllers/api/v0/enterprises_controller_spec.rb b/spec/controllers/api/v0/enterprises_controller_spec.rb
index d0529f3eeb..8a74176ff0 100644
--- a/spec/controllers/api/v0/enterprises_controller_spec.rb
+++ b/spec/controllers/api/v0/enterprises_controller_spec.rb
@@ -7,6 +7,31 @@ RSpec.describe Api::V0::EnterprisesController, type: :controller do
 
   let(:enterprise) { create(:distributor_enterprise) }
 
+  context "as an admin user" do
+    let(:admin) { create(:user) }
+    let!(:enterprise) { create(:distributor_enterprise) }
+
+    before do
+      allow(controller).to receive(:spree_current_user) { admin }
+    end
+
+    describe "updating an enterprise" do
+      let(:enterprise_params) do
+        {
+          enterprise_id: enterprise.id,
+          enterprise: { external_billing_id: 'INV123456' }
+        }
+      end
+
+      it "creates a visible=hidden enterprise" do
+        api_post :create, enterprise_params
+        expect(response.status).to eq 200
+
+        expect(enterprise.reload.external_billing_id).to eq('INV123456')
+      end
+    end
+  end
+
   context "as an enterprise owner" do
     let(:enterprise_owner) { create(:user) }
     let!(:enterprise) { create(:distributor_enterprise, owner: enterprise_owner) }
diff --git a/spec/serializers/api/admin/enterprise_serializer_spec.rb b/spec/serializers/api/admin/enterprise_serializer_spec.rb
index 3f20145771..df2a86f802 100644
--- a/spec/serializers/api/admin/enterprise_serializer_spec.rb
+++ b/spec/serializers/api/admin/enterprise_serializer_spec.rb
@@ -73,4 +73,13 @@ RSpec.describe Api::Admin::EnterpriseSerializer do
       end
     end
   end
+
+  context "when there is a external billing id" do
+    let(:enterprise) { create(:distributor_enterprise, external_billing_id: 'INV123456') }
+
+    it "includes URLs of image versions" do
+      serializer = Api::Admin::EnterpriseSerializer.new(enterprise)
+      expect(serializer.as_json[:external_billing_id]).to eq('INV123456')
+    end
+  end
 end