diff --git a/e2e-tests/insurance/cypress/e2e/journeys/export-contract/agent-charges/agent-charges-fixed-sum-amount-with-comma.spec.js b/e2e-tests/insurance/cypress/e2e/journeys/export-contract/agent-charges/agent-charges-fixed-sum-amount-with-comma.spec.js
new file mode 100644
index 0000000000..5ebb781303
--- /dev/null
+++ b/e2e-tests/insurance/cypress/e2e/journeys/export-contract/agent-charges/agent-charges-fixed-sum-amount-with-comma.spec.js
@@ -0,0 +1,77 @@
+import FIELD_IDS from '../../../../../../constants/field-ids/insurance/export-contract';
+import { INSURANCE_ROUTES } from '../../../../../../constants/routes/insurance';
+
+const {
+  ROOT,
+  EXPORT_CONTRACT: { AGENT_CHARGES, CHECK_YOUR_ANSWERS },
+} = INSURANCE_ROUTES;
+
+const {
+  AGENT_CHARGES: { METHOD, FIXED_SUM },
+} = FIELD_IDS;
+
+const baseUrl = Cypress.config('baseUrl');
+
+context('Insurance - Export contract - Agent charges page - Fixed sum amount with a comma', () => {
+  let referenceNumber;
+  let url;
+  let checkYourAnswersUrl;
+
+  before(() => {
+    cy.completeSignInAndGoToApplication({}).then(({ referenceNumber: refNumber }) => {
+      referenceNumber = refNumber;
+
+      // go to the page we want to test.
+      cy.startInsuranceExportContractSection({});
+      cy.completeAndSubmitAboutGoodsOrServicesForm({});
+      cy.completeAndSubmitHowYouWillGetPaidForm({});
+      cy.completeAndSubmitAgentForm({ isUsingAgent: true });
+      cy.completeAndSubmitAgentDetailsForm({});
+      cy.completeAndSubmitAgentServiceForm({ agentIsCharging: true });
+
+      url = `${baseUrl}${ROOT}/${referenceNumber}${AGENT_CHARGES}`;
+      checkYourAnswersUrl = `${baseUrl}${ROOT}/${referenceNumber}${CHECK_YOUR_ANSWERS}`;
+    });
+  });
+
+  beforeEach(() => {
+    cy.saveSession();
+  });
+
+  after(() => {
+    cy.deleteApplication(referenceNumber);
+  });
+
+  describe('form submission', () => {
+    beforeEach(() => {
+      cy.navigateToUrl(url);
+    });
+
+    describe(`when submitting with ${METHOD} as ${FIXED_SUM} with a comma`, () => {
+      const fixedSumAmount = '1,000';
+      const amount = '1000';
+
+      it(`should redirect to ${CHECK_YOUR_ANSWERS}`, () => {
+        cy.completeAndSubmitAgentChargesForm({ fixedSumMethod: true, fixedSumAmount });
+
+        cy.assertUrl(checkYourAnswersUrl);
+      });
+
+      it('should update the `export contract` task status to `completed`', () => {
+        cy.navigateToAllSectionsUrl(referenceNumber);
+
+        cy.checkTaskExportContractStatusIsComplete();
+      });
+
+      describe('when going back to the page', () => {
+        beforeEach(() => {
+          cy.navigateToUrl(url);
+        });
+
+        it('should have the submitted value without the comma', () => {
+          cy.assertAgentChargesFieldValues({ fixedSumMethod: true, expectedFixedSumAmount: amount });
+        });
+      });
+    });
+  });
+});
diff --git a/src/ui/server/controllers/insurance/export-contract/map-submitted-data/agent-service-charge/index.test.ts b/src/ui/server/controllers/insurance/export-contract/map-submitted-data/agent-service-charge/index.test.ts
index 455e7eb7b6..f6f82ad7f2 100644
--- a/src/ui/server/controllers/insurance/export-contract/map-submitted-data/agent-service-charge/index.test.ts
+++ b/src/ui/server/controllers/insurance/export-contract/map-submitted-data/agent-service-charge/index.test.ts
@@ -1,6 +1,7 @@
 import mapSubmittedData from '.';
 import { APPLICATION } from '../../../../../constants';
 import FIELD_IDS from '../../../../../constants/field-ids/insurance';
+import { stripCommas } from '../../../../../helpers/string';
 import { EUR, HKD } from '../../../../../test-mocks';
 
 const {
@@ -40,6 +41,28 @@ describe('controllers/insurance/export-contract/map-submitted-data/agent-service
       expect(result).toEqual(expected);
     });
 
+    describe(`when ${METHOD} is ${FIXED_SUM} and contains a comma`, () => {
+      it('should return the form body with mapped data with the comma stripped', () => {
+        const mockFormBody = {
+          [METHOD]: FIXED_SUM,
+          [FIXED_SUM_AMOUNT]: '1,500',
+          [ALTERNATIVE_CURRENCY_CODE]: EUR.isoCode,
+          [CURRENCY_CODE]: EUR.isoCode,
+        };
+
+        const result = mapSubmittedData(mockFormBody);
+
+        const expected = {
+          ...mockFormBody,
+          [FIXED_SUM_AMOUNT]: stripCommas(String(mockFormBody[FIXED_SUM_AMOUNT])),
+          [PERCENTAGE_CHARGE]: null,
+          [FIXED_SUM_CURRENCY_CODE]: EUR.isoCode,
+        };
+
+        expect(result).toEqual(expected);
+      });
+    });
+
     it(`should set ${ALTERNATIVE_CURRENCY_CODE} to null when ${CURRENCY_CODE} is NOT ${ALTERNATIVE_CURRENCY_CODE}`, () => {
       const mockFormBody = {
         [METHOD]: FIXED_SUM,
diff --git a/src/ui/server/controllers/insurance/export-contract/map-submitted-data/agent-service-charge/index.ts b/src/ui/server/controllers/insurance/export-contract/map-submitted-data/agent-service-charge/index.ts
index dbafb82287..ba41b65533 100644
--- a/src/ui/server/controllers/insurance/export-contract/map-submitted-data/agent-service-charge/index.ts
+++ b/src/ui/server/controllers/insurance/export-contract/map-submitted-data/agent-service-charge/index.ts
@@ -1,7 +1,7 @@
 import { APPLICATION } from '../../../../../constants';
 import FIELD_IDS from '../../../../../constants/field-ids/insurance';
 import { objectHasProperty } from '../../../../../helpers/object';
-import { isEmptyString } from '../../../../../helpers/string';
+import { isEmptyString, stripCommas } from '../../../../../helpers/string';
 import { RequestBody } from '../../../../../../types';
 
 const {
@@ -31,7 +31,7 @@ const mapSubmittedData = (formBody: RequestBody): object => {
   const populatedData = formBody;
 
   if (formBody[METHOD] === FIXED_SUM) {
-    populatedData[FIXED_SUM_AMOUNT] = String(populatedData[FIXED_SUM_AMOUNT]);
+    populatedData[FIXED_SUM_AMOUNT] = stripCommas(String(populatedData[FIXED_SUM_AMOUNT]));
     populatedData[PERCENTAGE_CHARGE] = null;
   }