diff --git a/CHANGELOG.md b/CHANGELOG.md
index 68120eca1f7..88fc4cb718f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## Unreleased (develop)
 
+- fixed: Hide the send scene's MAX button once a send has more than one recipient, and hide "Add another address" once MAX has been applied, so the two can no longer combine into an insufficient-funds transaction.
+
 ## 4.51.0 (staging)
 
 - added: Push info-server attestation tokens into edge-core-js via `setAttestationToken` so the login server can skip CAPTCHA for attested devices, and allow `LOGIN_SERVER` / `INFO_SERVER` env overrides for local E2E stacks.
diff --git a/src/components/scenes/SendScene2.tsx b/src/components/scenes/SendScene2.tsx
index 050a7e8ddf2..1232d6bed4d 100644
--- a/src/components/scenes/SendScene2.tsx
+++ b/src/components/scenes/SendScene2.tsx
@@ -620,6 +620,11 @@ const SendComponent: React.FC<Props> = props => {
   const handleFlipInputModal =
     (index: number, spendTarget: EdgeSpendTarget) => (): void => {
       const { noChangeMiningFee } = getSpecialCurrencyInfo(pluginId)
+      // A max spend only has a defined meaning for a single recipient: it
+      // consumes the entire spendable balance. Once the send has more than one
+      // target there is nothing left over for the others, so the button is
+      // hidden rather than allowed to produce an insufficient-funds spend.
+      const isMultipleTargets = spendInfo.spendTargets.length > 1
       Airship.show<FlipInputModalResult>(bridge => (
         <FlipInputModal2
           ref={flipInputModalRef}
@@ -627,6 +632,7 @@ const SendComponent: React.FC<Props> = props => {
           startNativeAmount={spendTarget.nativeAmount}
           feeTokenId={null}
           forceField={fieldChanged}
+          hideMaxButton={isMultipleTargets}
           onAmountsChanged={handleAmountsChanged(spendTarget)}
           onMaxSet={() => {
             setMaxSpendSetter(index)
@@ -753,7 +759,11 @@ const SendComponent: React.FC<Props> = props => {
       hiddenFeaturesMap.address === true ||
       hiddenFeaturesMap.amount === true ||
       lockTilesMap.address === true ||
-      lockTilesMap.amount === true
+      lockTilesMap.amount === true ||
+      // The existing target already claims the whole spendable balance, so a
+      // second recipient could only ever be funded by shrinking it. Withhold
+      // the entry point instead of silently discarding the max amount.
+      maxSpendSetter >= 0
     ) {
       return null
     }