diff --git a/web/cashtab/src/utils/__tests__/cashMethods.test.js b/web/cashtab/src/utils/__tests__/cashMethods.test.js
--- a/web/cashtab/src/utils/__tests__/cashMethods.test.js
+++ b/web/cashtab/src/utils/__tests__/cashMethods.test.js
@@ -17,10 +17,15 @@
             10000000.12345678,
         );
     });
-    it(`Formats a large number to add commas`, () => {
-        expect(formatBalance(1000000012345678)).toBe('1,000,000,012,345,678');
+    it(`Formats a large number to add spaces as thousands separator`, () => {
+        expect(formatBalance(1000000012345678)).toBe('1 000 000 012 345 678');
     });
-    it(`Formats a large number with 2 decimal places to add commas`, () => {
-        expect(formatBalance(10000000123456.78)).toBe('10,000,000,123,456.78');
+    it(`Formats a large number with 2 decimal places to add as thousands separator`, () => {
+        expect(formatBalance(10000000123456.78)).toBe('10 000 000 123 456.78');
+    });
+    it(`Formats a large number with 9 decimal places to add as thousands separator without adding them to decimals`, () => {
+        expect(formatBalance('10000000123456.789123456')).toBe(
+            '10 000 000 123 456.789123456',
+        );
     });
 });
diff --git a/web/cashtab/src/utils/cashMethods.js b/web/cashtab/src/utils/cashMethods.js
--- a/web/cashtab/src/utils/cashMethods.js
+++ b/web/cashtab/src/utils/cashMethods.js
@@ -34,6 +34,6 @@
 
 export const formatBalance = x => {
     let balanceInParts = x.toString().split('.');
-    balanceInParts[0] = balanceInParts[0].replace(/\B(?=(\d{3})+(?!\d))/g, ',');
+    balanceInParts[0] = balanceInParts[0].replace(/\B(?=(\d{3})+(?!\d))/g, ' ');
     return balanceInParts.join('.');
 };