diff --git a/api-tester/src/defaults/java/com/revenuecat/apitester/java/revenuecatui/PaywallListenerAPI.java b/api-tester/src/defaults/java/com/revenuecat/apitester/java/revenuecatui/PaywallListenerAPI.java
index 8a11fb54b1..8acd60117a 100644
--- a/api-tester/src/defaults/java/com/revenuecat/apitester/java/revenuecatui/PaywallListenerAPI.java
+++ b/api-tester/src/defaults/java/com/revenuecat/apitester/java/revenuecatui/PaywallListenerAPI.java
@@ -39,6 +39,9 @@ public void onRestoreError(@NonNull PurchasesError error) {}
 
             @Override
             public void onRestoreCompleted(@NonNull CustomerInfo customerInfo) {}
+
+            @Override
+            public void onWebCheckoutOpened() {}
         };
     }
 }
diff --git a/ui/revenuecatui/api.txt b/ui/revenuecatui/api.txt
index 692de54744..4fd0997f26 100644
--- a/ui/revenuecatui/api.txt
+++ b/ui/revenuecatui/api.txt
@@ -87,6 +87,7 @@ package com.revenuecat.purchases.ui.revenuecatui {
     method public default void onRestoreError(com.revenuecat.purchases.PurchasesError error);
     method public default void onRestoreInitiated(com.revenuecat.purchases.ui.revenuecatui.utils.Resumable resume);
     method public default void onRestoreStarted();
+    method public default void onWebCheckoutOpened();
   }
 
   @androidx.compose.runtime.Immutable @dev.drewhamilton.poko.Poko public final class PaywallOptions {
diff --git a/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/InternalPaywall.kt b/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/InternalPaywall.kt
index 51f80e20c1..53cb26f30c 100644
--- a/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/InternalPaywall.kt
+++ b/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/InternalPaywall.kt
@@ -1,4 +1,5 @@
 @file:OptIn(InternalRevenueCatAPI::class)
+@file:Suppress("TooManyFunctions")
 
 package com.revenuecat.purchases.ui.revenuecatui
 
@@ -388,19 +389,7 @@ private fun rememberPaywallActionHandler(viewModel: PaywallViewModel): suspend (
                         )
                     }
 
-                is PaywallAction.External.LaunchWebCheckout -> {
-                    val url = viewModel.getWebCheckoutUrl(action)
-                    if (url == null) {
-                        Logger.e("Web checkout URL cannot be found, not launching web checkout.")
-                    } else {
-                        viewModel.invalidateCustomerInfoCache()
-                        context.handleUrlDestination(url, action.openMethod)
-                        if (action.autoDismiss) {
-                            Logger.d("Auto-dismissing paywall after launching web checkout.")
-                            viewModel.closePaywall()
-                        }
-                    }
-                }
+                is PaywallAction.External.LaunchWebCheckout -> handleLaunchWebCheckout(context, viewModel, action)
 
                 is PaywallAction.External.NavigateBack -> {
                     if (!viewModel.handleBackNavigation()) {
@@ -427,7 +416,31 @@ private fun rememberPaywallActionHandler(viewModel: PaywallViewModel): suspend (
     }
 }
 
-private fun Context.handleUrlDestination(url: String, method: ButtonComponent.UrlMethod) {
+private fun handleLaunchWebCheckout(
+    context: Context,
+    viewModel: PaywallViewModel,
+    action: PaywallAction.External.LaunchWebCheckout,
+) {
+    val url = viewModel.getWebCheckoutUrl(action)
+    if (url == null) {
+        Logger.e("Web checkout URL cannot be found, not launching web checkout.")
+        return
+    }
+    viewModel.invalidateCustomerInfoCache()
+    val opened = context.handleUrlDestination(url, action.openMethod)
+    if (opened) {
+        viewModel.notifyWebCheckoutOpened()
+    }
+    if (action.autoDismiss) {
+        Logger.d("Auto-dismissing paywall after launching web checkout.")
+        viewModel.closePaywall()
+    }
+}
+
+/**
+ * @return whether the URL was actually opened.
+ */
+private fun Context.handleUrlDestination(url: String, method: ButtonComponent.UrlMethod): Boolean {
     val openingMethod = when (method) {
         ButtonComponent.UrlMethod.IN_APP_BROWSER -> URLOpeningMethod.IN_APP_BROWSER
         ButtonComponent.UrlMethod.EXTERNAL_BROWSER -> URLOpeningMethod.EXTERNAL_BROWSER
@@ -435,11 +448,11 @@ private fun Context.handleUrlDestination(url: String, method: ButtonComponent.Ur
         ButtonComponent.UrlMethod.UNKNOWN -> {
             // Buttons like this should be hidden, so this log should never be shown.
             Logger.e("Ignoring button click with unknown open method for URL: '$url'. This is a bug in the SDK.")
-            return
+            return false
         }
     }
 
-    URLOpener.openURL(this, url, openingMethod)
+    return URLOpener.openURL(this, url, openingMethod)
 }
 
 private fun Modifier.screenModeBackground(isInFullScreenMode: Boolean, backgroundColor: Color): Modifier = this
diff --git a/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/LoadingPaywall.kt b/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/LoadingPaywall.kt
index 458bd7bd56..c8725e8a72 100644
--- a/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/LoadingPaywall.kt
+++ b/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/LoadingPaywall.kt
@@ -214,6 +214,10 @@ private class LoadingViewModel(
         return null
     }
 
+    override fun notifyWebCheckoutOpened() {
+        // no-op
+    }
+
     override fun invalidateCustomerInfoCache() {
         // no-op
     }
diff --git a/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/PaywallListener.kt b/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/PaywallListener.kt
index 9997f53fca..07808260ac 100644
--- a/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/PaywallListener.kt
+++ b/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/PaywallListener.kt
@@ -39,4 +39,10 @@ public interface PaywallListener {
     public fun onRestoreStarted() {}
     public fun onRestoreCompleted(customerInfo: CustomerInfo) {}
     public fun onRestoreError(error: PurchasesError) {}
+
+    /**
+     * Called when the user taps a web checkout CTA and the external payment URL was opened.
+     * Distinct from cancellation: the user has not cancelled, they left to pay externally.
+     */
+    public fun onWebCheckoutOpened() {}
 }
diff --git a/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/activity/PaywallActivity.kt b/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/activity/PaywallActivity.kt
index 17e74cf335..2c0734c485 100644
--- a/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/activity/PaywallActivity.kt
+++ b/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/activity/PaywallActivity.kt
@@ -186,6 +186,10 @@ internal class PaywallActivity : ComponentActivity() {
                 userListener?.onRestoreError(error)
                 setResult(RESULT_OK, createResultIntent(PaywallResult.Error(error)))
             }
+
+            override fun onWebCheckoutOpened() {
+                userListener?.onWebCheckoutOpened()
+            }
         }
 
         val edgeToEdge = args?.edgeToEdge == true
diff --git a/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/data/PaywallViewModel.kt b/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/data/PaywallViewModel.kt
index 806033323b..8e5a149c46 100644
--- a/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/data/PaywallViewModel.kt
+++ b/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/data/PaywallViewModel.kt
@@ -139,6 +139,7 @@ internal interface PaywallViewModel {
     fun onTransitionComplete(transitionId: Int)
 
     fun getWebCheckoutUrl(launchWebCheckout: PaywallAction.External.LaunchWebCheckout): String?
+    fun notifyWebCheckoutOpened()
     fun invalidateCustomerInfoCache()
 
     /**
@@ -414,6 +415,10 @@ internal class PaywallViewModelImpl(
         return state.resolveWebCheckoutUrlForInteraction(launchWebCheckout)
     }
 
+    override fun notifyWebCheckoutOpened() {
+        listener?.onWebCheckoutOpened()
+    }
+
     override fun invalidateCustomerInfoCache() {
         purchases.invalidateVirtualCurrenciesCache()
     }
diff --git a/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/data/testdata/TestData.kt b/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/data/testdata/TestData.kt
index 88734b5e65..5e8b11b51f 100644
--- a/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/data/testdata/TestData.kt
+++ b/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/data/testdata/TestData.kt
@@ -521,6 +521,7 @@ internal class MockViewModel(
     validationWarning: PaywallWarning? = null,
     private val allowsPurchases: Boolean = false,
     private val shouldErrorOnUnsupportedMethods: Boolean = true,
+    private val webCheckoutUrl: String? = null,
 ) : ViewModel(), PaywallViewModel {
     override val resourceProvider: ResourceProvider
         get() = MockResourceProvider()
@@ -619,7 +620,13 @@ internal class MockViewModel(
     override fun getWebCheckoutUrl(launchWebCheckout: PaywallAction.External.LaunchWebCheckout): String? {
         getWebCheckoutUrlCallCount++
         getWebCheckoutUrlParams.add(launchWebCheckout)
-        return null
+        return webCheckoutUrl
+    }
+
+    var notifyWebCheckoutOpenedCallCount = 0
+        private set
+    override fun notifyWebCheckoutOpened() {
+        notifyWebCheckoutOpenedCallCount++
     }
 
     var invalidateCustomerInfoCacheCallCount = 0
diff --git a/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/utils/URLOpener.kt b/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/utils/URLOpener.kt
index f91776b78f..22540319bc 100644
--- a/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/utils/URLOpener.kt
+++ b/ui/revenuecatui/src/main/kotlin/com/revenuecat/purchases/ui/revenuecatui/utils/URLOpener.kt
@@ -20,8 +20,14 @@ internal enum class URLOpeningMethod {
 }
 
 internal object URLOpener {
-    @JvmSynthetic internal fun openURL(context: Context, url: String, method: URLOpeningMethod) {
+    /**
+     * @return whether the URL was actually opened.
+     */
+    @JvmSynthetic internal fun openURL(context: Context, url: String, method: URLOpeningMethod): Boolean {
+        var opened = true
+
         fun handleException(exception: Exception) {
+            opened = false
             val message = if (exception is ActivityNotFoundException) {
                 context.getString(R.string.no_browser_cannot_open_link)
             } else {
@@ -49,5 +55,7 @@ internal object URLOpener {
             URLOpeningMethod.DEEP_LINK,
             -> context.openUriOrElse(url, ::handleException)
         }
+
+        return opened
     }
 }
diff --git a/ui/revenuecatui/src/test/kotlin/com/revenuecat/purchases/ui/revenuecatui/components/PaywallActionTests.kt b/ui/revenuecatui/src/test/kotlin/com/revenuecat/purchases/ui/revenuecatui/components/PaywallActionTests.kt
index ffd16d6283..ae3166a141 100644
--- a/ui/revenuecatui/src/test/kotlin/com/revenuecat/purchases/ui/revenuecatui/components/PaywallActionTests.kt
+++ b/ui/revenuecatui/src/test/kotlin/com/revenuecat/purchases/ui/revenuecatui/components/PaywallActionTests.kt
@@ -262,6 +262,194 @@ class PaywallActionTests {
         assertEquals(1, viewModel.closePaywallCallCount)
     }
 
+    @Test
+    fun `LaunchWebCheckout with autoDismiss notifies listener and closes paywall`(): Unit =
+        with(composeTestRule) {
+            // Arrange
+            val textColor = ColorScheme(ColorInfo.Hex(Color.Black.toArgb()))
+            val defaultLocale = LocaleId("en_US")
+            val localizationKey = LocalizationKey("web_checkout")
+            val localizationData = LocalizationData.Text("web checkout")
+            val localizations = nonEmptyMapOf(
+                defaultLocale to nonEmptyMapOf(localizationKey to localizationData),
+            )
+            val components = listOf(
+                PurchaseButtonComponent(
+                    stack = StackComponent(
+                        components = listOf(TextComponent(text = localizationKey, color = textColor)),
+                    ),
+                    method = PurchaseButtonComponent.Method.WebCheckout(autoDismiss = true),
+                ),
+            )
+            val offering = FakeOffering(components, localizations)
+            val viewModel = MockViewModel(
+                offering = offering,
+                allowsPurchases = true,
+                webCheckoutUrl = "https://checkout.example.com",
+            )
+            val options = PaywallOptions.Builder(dismissRequest = {}).setOffering(offering).build()
+
+            // Act
+            setContent { InternalPaywall(options, viewModel) }
+            // Buttons appear once in main content and once in sticky footer
+            onAllNodesWithText(localizationData.value)
+                .assertCountEquals(2)
+                .get(0)
+                .assertIsDisplayed()
+                .assertHasClickAction()
+                .performClick()
+            waitForIdle()
+
+            // Assert: listener notified once, paywall dismissed generically (no new result type)
+            assertEquals(1, viewModel.notifyWebCheckoutOpenedCallCount)
+            assertEquals(1, viewModel.closePaywallCallCount)
+        }
+
+    @Test
+    fun `LaunchWebCheckout without autoDismiss notifies listener but keeps paywall open`(): Unit =
+        with(composeTestRule) {
+            // Arrange
+            val textColor = ColorScheme(ColorInfo.Hex(Color.Black.toArgb()))
+            val defaultLocale = LocaleId("en_US")
+            val localizationKey = LocalizationKey("web_checkout")
+            val localizationData = LocalizationData.Text("web checkout")
+            val localizations = nonEmptyMapOf(
+                defaultLocale to nonEmptyMapOf(localizationKey to localizationData),
+            )
+            val components = listOf(
+                PurchaseButtonComponent(
+                    stack = StackComponent(
+                        components = listOf(TextComponent(text = localizationKey, color = textColor)),
+                    ),
+                    method = PurchaseButtonComponent.Method.WebCheckout(autoDismiss = false),
+                ),
+            )
+            val offering = FakeOffering(components, localizations)
+            val viewModel = MockViewModel(
+                offering = offering,
+                allowsPurchases = true,
+                webCheckoutUrl = "https://checkout.example.com",
+            )
+            val options = PaywallOptions.Builder(dismissRequest = {}).setOffering(offering).build()
+
+            // Act
+            setContent { InternalPaywall(options, viewModel) }
+            // Buttons appear once in main content and once in sticky footer
+            onAllNodesWithText(localizationData.value)
+                .assertCountEquals(2)
+                .get(0)
+                .assertIsDisplayed()
+                .assertHasClickAction()
+                .performClick()
+            waitForIdle()
+
+            // Assert: listener still notified, but the paywall is NOT dismissed
+            assertEquals(1, viewModel.notifyWebCheckoutOpenedCallCount)
+            assertEquals(0, viewModel.closePaywallCallCount)
+        }
+
+    @Test
+    fun `LaunchWebCheckout with unknown open method does not notify listener`(): Unit =
+        with(composeTestRule) {
+            // Arrange
+            val textColor = ColorScheme(ColorInfo.Hex(Color.Black.toArgb()))
+            val defaultLocale = LocaleId("en_US")
+            val localizationKey = LocalizationKey("web_checkout")
+            val localizationData = LocalizationData.Text("web checkout")
+            val localizations = nonEmptyMapOf(
+                defaultLocale to nonEmptyMapOf(localizationKey to localizationData),
+            )
+            val components = listOf(
+                PurchaseButtonComponent(
+                    stack = StackComponent(
+                        components = listOf(TextComponent(text = localizationKey, color = textColor)),
+                    ),
+                    method = PurchaseButtonComponent.Method.WebCheckout(
+                        autoDismiss = true,
+                        openMethod = ButtonComponent.UrlMethod.UNKNOWN,
+                    ),
+                ),
+            )
+            val offering = FakeOffering(components, localizations)
+            val viewModel = MockViewModel(
+                offering = offering,
+                allowsPurchases = true,
+                webCheckoutUrl = "https://checkout.example.com",
+            )
+            val options = PaywallOptions.Builder(dismissRequest = {}).setOffering(offering).build()
+
+            // Act
+            setContent { InternalPaywall(options, viewModel) }
+            // Buttons appear once in main content and once in sticky footer
+            onAllNodesWithText(localizationData.value)
+                .assertCountEquals(2)
+                .get(0)
+                .assertIsDisplayed()
+                .assertHasClickAction()
+                .performClick()
+            waitForIdle()
+
+            // Assert: no URL was opened for an unrecognized method, so the listener must not be
+            // told a web checkout was launched
+            assertEquals(0, viewModel.notifyWebCheckoutOpenedCallCount)
+        }
+
+    @Test
+    fun `LaunchWebCheckout with a recognized method that fails to actually open does not notify listener`(): Unit =
+        with(composeTestRule) {
+            // Arrange
+            val textColor = ColorScheme(ColorInfo.Hex(Color.Black.toArgb()))
+            val defaultLocale = LocaleId("en_US")
+            val localizationKey = LocalizationKey("web_checkout")
+            val localizationData = LocalizationData.Text("web checkout")
+            val localizations = nonEmptyMapOf(
+                defaultLocale to nonEmptyMapOf(localizationKey to localizationData),
+            )
+            val components = listOf(
+                PurchaseButtonComponent(
+                    stack = StackComponent(
+                        components = listOf(TextComponent(text = localizationKey, color = textColor)),
+                    ),
+                    method = PurchaseButtonComponent.Method.WebCheckout(
+                        autoDismiss = true,
+                        openMethod = ButtonComponent.UrlMethod.DEEP_LINK,
+                    ),
+                ),
+            )
+            val offering = FakeOffering(components, localizations)
+            val viewModel = MockViewModel(
+                offering = offering,
+                allowsPurchases = true,
+                // No app on the test device/Robolectric sandbox registers this custom scheme, so the
+                // real Android URL-opening machinery genuinely fails here (unlike the other tests'
+                // https:// URLs, which resolve successfully).
+                webCheckoutUrl = "com.revenuecat.nonexistent-test-scheme://checkout",
+            )
+            val options = PaywallOptions.Builder(dismissRequest = {}).setOffering(offering).build()
+
+            // Robolectric's default shadow accepts any startActivity call as "successful" regardless of
+            // whether a real component could handle it. Enable strict validation so this custom scheme
+            // genuinely throws ActivityNotFoundException, like it would on a real device.
+            org.robolectric.Shadows.shadowOf(
+                ApplicationProvider.getApplicationContext<android.app.Application>(),
+            ).checkActivities(true)
+
+            // Act
+            setContent { InternalPaywall(options, viewModel) }
+            // Buttons appear once in main content and once in sticky footer
+            onAllNodesWithText(localizationData.value)
+                .assertCountEquals(2)
+                .get(0)
+                .assertIsDisplayed()
+                .assertHasClickAction()
+                .performClick()
+            waitForIdle()
+
+            // Assert: even though DEEP_LINK is a recognized method, the URL genuinely failed to open
+            // (no matching activity), so the listener must not be told a web checkout was launched
+            assertEquals(0, viewModel.notifyWebCheckoutOpenedCallCount)
+        }
+
     @Suppress("TestFunctionName")
     private fun FakeOffering(data: PaywallComponentsData): Offering =
         Offering(