diff --git a/web/cashtab/src/hooks/__tests__/useBCH.test.js b/web/cashtab/src/hooks/__tests__/useBCH.test.js
--- a/web/cashtab/src/hooks/__tests__/useBCH.test.js
+++ b/web/cashtab/src/hooks/__tests__/useBCH.test.js
@@ -48,12 +48,28 @@
             expectedTxFee = 1126;
         } else if (currency.defaultFee === 5.01) {
             expectedTxFee = 1874;
-        } else if ((currency.defaultFee = 83.3)) {
+        } else if (currency.defaultFee === 83.3) {
             expectedTxFee = 31155;
         }
         expect(calcFee(BCH, utxosMock)).toBe(expectedTxFee);
     });
 
+    it('calculates fee correctly for 1 P2PKH output', () => {
+        const { calcFee } = useBCH();
+        const BCH = new BCHJS();
+        const utxosMock = [{}];
+        // For 1.01 sat/byte fee
+        let expectedTxFee = 229;
+        if (currency.defaultFee === 3.01) {
+            expectedTxFee = 681;
+        } else if (currency.defaultFee === 5.01) {
+            expectedTxFee = 1133;
+        } else if (currency.defaultFee === 83.3) {
+            expectedTxFee = 18826;
+        }
+        expect(calcFee(BCH, utxosMock)).toBe(expectedTxFee);
+    });
+
     it('gets SLP and BCH balances and utxos from hydrated utxo details', async () => {
         const { getSlpBalancesAndUtxos } = useBCH();
 
@@ -126,22 +142,30 @@
         expect(callback).toHaveBeenCalledWith(expectedTxId);
     });
 
-    it('sends BCH with less BCH available on balance', async () => {
+    it(`Throws error if called trying to send one satoshi ${currency.ticker} more than available in utxo set`, async () => {
         const { sendBch } = useBCH();
         const BCH = new BCHJS();
-        const {
-            expectedTxId,
-            expectedHex,
-            utxos,
-            wallet,
-            addresses,
-        } = sendBCHMock;
+        const { expectedTxId, utxos, wallet, addresses } = sendBCHMock;
+        let expectedTxFee = 229;
+        if (currency.defaultFee === 3.01) {
+            expectedTxFee = 681;
+        } else if (currency.defaultFee === 5.01) {
+            expectedTxFee = 1133;
+        } else if (currency.defaultFee === 83.3) {
+            expectedTxFee = 18826;
+        }
         BCH.RawTransactions.sendRawTransaction = jest
             .fn()
             .mockResolvedValue(expectedTxId);
+        const oneBaseUnitMoreThanBalance = new BigNumber(utxos[0].value)
+            .minus(expectedTxFee)
+            .plus(1)
+            .div(10 ** currency.cashDecimals)
+            .toString();
+
         const failedSendBch = sendBch(BCH, wallet, utxos, {
             addresses,
-            values: [1],
+            values: [oneBaseUnitMoreThanBalance],
         });
         expect(failedSendBch).rejects.toThrow(new Error('Insufficient funds'));
         const nullValuesSendBch = await sendBch(BCH, wallet, utxos, {