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
@@ -28,4 +28,13 @@
             '10 000 000 123 456.789123456',
         );
     });
+    it(`formatBalance handles an input of 0`, () => {
+        expect(formatBalance('0')).toBe('0');
+    });
+    it(`formatBalance handles an input of undefined`, () => {
+        expect(formatBalance(undefined)).toBe(undefined);
+    });
+    it(`formatBalance handles an input of null`, () => {
+        expect(formatBalance(null)).toBe(null);
+    });
 });
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
@@ -33,7 +33,16 @@
 };
 
 export const formatBalance = x => {
-    let balanceInParts = x.toString().split('.');
-    balanceInParts[0] = balanceInParts[0].replace(/\B(?=(\d{3})+(?!\d))/g, ' ');
-    return balanceInParts.join('.');
+    try {
+        let balanceInParts = x.toString().split('.');
+        balanceInParts[0] = balanceInParts[0].replace(
+            /\B(?=(\d{3})+(?!\d))/g,
+            ' ',
+        );
+        return balanceInParts.join('.');
+    } catch (err) {
+        console.log(`Error in formatBalance for ${x}`);
+        console.log(err);
+        return x;
+    }
 };