diff --git a/ghost/portal/src/components/pages/OfferPage.js b/ghost/portal/src/components/pages/OfferPage.js
index 62e148af1d..5934945d32 100644
--- a/ghost/portal/src/components/pages/OfferPage.js
+++ b/ghost/portal/src/components/pages/OfferPage.js
@@ -3,7 +3,7 @@ import AppContext from '../../AppContext';
 import {ReactComponent as CheckmarkIcon} from '../../images/icons/checkmark.svg';
 import CloseButton from '../common/CloseButton';
 import InputForm from '../common/InputForm';
-import {getCurrencySymbol, getProductFromId, hasMultipleProductsFeature} from '../../utils/helpers';
+import {getCurrencySymbol, getProductFromId, hasMultipleProductsFeature, isSameCurrency} from '../../utils/helpers';
 import {ValidateInputForm} from '../../utils/form';
 const React = require('react');
 
@@ -445,7 +445,7 @@ export default class OfferPage extends React.Component {
         const price = offer.cadence === 'month' ? product.monthlyPrice : product.yearlyPrice;
         const originalAmount = price.amount;
         let updatedAmount;
-        if (offer.type === 'fixed' && offer.currency === price.currency) {
+        if (offer.type === 'fixed' && isSameCurrency(offer.currency, price.currency)) {
             updatedAmount = ((originalAmount - offer.amount)) / 100;
             return updatedAmount > 0 ? updatedAmount : 0;
         } else if (offer.type === 'percent') {
diff --git a/ghost/portal/src/utils/helpers.js b/ghost/portal/src/utils/helpers.js
index dd9a325947..db5ef231f2 100644
--- a/ghost/portal/src/utils/helpers.js
+++ b/ghost/portal/src/utils/helpers.js
@@ -484,6 +484,10 @@ export const createPopupNotification = ({type, status, autoHide, duration, close
     };
 };
 
+export function isSameCurrency(currency1, currency2) {
+    return currency1?.toLowerCase() === currency2?.toLowerCase();
+}
+
 export function getPriceIdFromPageQuery({site, pageQuery}) {
     const productMonthlyPriceQueryRegex = /^(?:(\S+?))?\/monthly$/;
     const productYearlyPriceQueryRegex = /^(?:(\S+?))?\/yearly$/;
diff --git a/ghost/portal/src/utils/helpers.test.js b/ghost/portal/src/utils/helpers.test.js
index 53dadb3dc5..ca555d4b65 100644
--- a/ghost/portal/src/utils/helpers.test.js
+++ b/ghost/portal/src/utils/helpers.test.js
@@ -1,4 +1,4 @@
-import {getPriceIdFromPageQuery} from './helpers';
+import {getPriceIdFromPageQuery, isSameCurrency} from './helpers';
 import * as Fixtures from './fixtures';
 
 describe('Helpers - ', () => {
@@ -11,4 +11,21 @@ describe('Helpers - ', () => {
         const value = mockPriceIdFn({site: siteData, pageQuery});
         expect(value).toBe(expectedPriceId);
     });
+    describe('isSameCurrency - ', () => {
+        test('can match two currencies correctly ', () => {
+            let currency1 = 'USD';
+            let currency2 = 'USD';
+            expect(isSameCurrency(currency1, currency2)).toBe(true);
+        });
+        test('can match currencies with case mismatch', () => {
+            let currency1 = 'USD';
+            let currency2 = 'usd';
+            expect(isSameCurrency(currency1, currency2)).toBe(true);
+        });
+        test('can match currencies with case mismatch', () => {
+            let currency1 = 'eur';
+            let currency2 = 'usd';
+            expect(isSameCurrency(currency1, currency2)).toBe(false);
+        });
+    });
 });