diff --git a/apps/amm/qml/components/swap/SwapCard.qml b/apps/amm/qml/components/swap/SwapCard.qml
index 5bcbcc6..933e5e7 100644
--- a/apps/amm/qml/components/swap/SwapCard.qml
+++ b/apps/amm/qml/components/swap/SwapCard.qml
@@ -79,11 +79,13 @@ Rectangle {
     readonly property string limitText: exactOutput
         ? swapState.formatTokenAmount(maxSentAmount, sellToken ? sellToken.symbol : "")
         : swapState.formatTokenAmount(minReceivedAmount, buyToken ? buyToken.symbol : "")
+    readonly property real sellBalanceRequirement: exactOutput
+        ? maxSentAmount : parsedSellAmount
 
     readonly property bool hasAmount: editingSide === "sell" ? parsedSellInput > 0 : parsedBuyInput > 0
     readonly property bool tokensSelected: sellToken !== null && buyToken !== null
     readonly property bool sameTokenSelected: isSameToken(sellToken, buyToken)
-    readonly property bool insufficientBalance: hasAmount && sellToken !== null && parsedSellAmount > (sellToken.balance || 0)
+    readonly property bool insufficientBalance: hasAmount && sellToken !== null && sellBalanceRequirement > (sellToken.balance || 0)
     readonly property bool insufficientLiquidity: hasAmount && buyToken !== null && parsedBuyAmount > (buyToken.reserve || 0)
     readonly property bool canSubmit: tokensSelected && !sameTokenSelected && hasAmount && parsedSellAmount > 0 && parsedBuyAmount > 0 && !insufficientBalance && !insufficientLiquidity
 
diff --git a/apps/amm/tests/qml/tst_SwapPage.qml b/apps/amm/tests/qml/tst_SwapPage.qml
index f1ef080..d0e9a10 100644
--- a/apps/amm/tests/qml/tst_SwapPage.qml
+++ b/apps/amm/tests/qml/tst_SwapPage.qml
@@ -108,6 +108,25 @@ Item {
             verify(Number(snapshot.minReceived) < Number(snapshot.buyAmount))
         }
 
+        function test_exactOutputRequiresBalanceForMaximumInput() {
+            const page = createTemporaryObject(pageComponent, root)
+            verify(page)
+
+            const card = findChild(page, "swapCard")
+            verify(card)
+            card.setToken("sell", page.tokens[0])
+            card.setToken("buy", page.tokens[1])
+            card.slippageTolerancePercent = 10
+            card.buyInput = "11500"
+            card.editingSide = "buy"
+
+            verify(card.parsedSellAmount < card.sellToken.balance)
+            verify(card.maxSentAmount > card.sellToken.balance)
+            verify(card.insufficientBalance)
+            verify(!card.canSubmit)
+            compare(card.submitButtonText, "Insufficient balance")
+        }
+
         function test_reselectingOppositeTokenSwapsPair() {
             const page = createTemporaryObject(pageComponent, root)
             verify(page)