diff --git a/browser/ui/views/brave_ads/ad_notification_popup.cc b/browser/ui/views/brave_ads/ad_notification_popup.cc
index da27eb53338b..f9770c8bc782 100644
--- a/browser/ui/views/brave_ads/ad_notification_popup.cc
+++ b/browser/ui/views/brave_ads/ad_notification_popup.cc
@@ -333,12 +333,17 @@ void AdNotificationPopup::SaveOrigin(const gfx::Point& origin) const {
                                    origin.y());
 }
 
-gfx::Rect AdNotificationPopup::CalculateBounds() {
+gfx::Size AdNotificationPopup::CalculateViewSize() const {
   DCHECK(ad_notification_view_);
   gfx::Size size = ad_notification_view_->size();
   DCHECK(!size.IsEmpty());
 
   size += gfx::Size(-GetShadowMargin().width(), -GetShadowMargin().height());
+  return size;
+}
+
+gfx::Rect AdNotificationPopup::CalculateBounds() {
+  const gfx::Size size = CalculateViewSize();
   const gfx::Point origin = GetOriginForSize(size);
   return gfx::Rect(origin, size);
 }
@@ -348,8 +353,11 @@ void AdNotificationPopup::RecomputeAlignment() {
     return;
   }
 
-  const gfx::Rect bounds = GetWidget()->GetWindowBoundsInScreen();
-  AdjustBoundsAndSnapToFitWorkAreaForWidget(GetWidget(), bounds);
+  const gfx::Point window_origin =
+      GetWidget()->GetWindowBoundsInScreen().origin();
+  const gfx::Size view_size = CalculateViewSize();
+  AdjustBoundsAndSnapToFitWorkAreaForWidget(
+      GetWidget(), gfx::Rect(window_origin, view_size));
 }
 
 const gfx::ShadowDetails& AdNotificationPopup::GetShadowDetails() const {
diff --git a/browser/ui/views/brave_ads/ad_notification_popup.h b/browser/ui/views/brave_ads/ad_notification_popup.h
index 85b269a470af..bbdc3ae90ff4 100644
--- a/browser/ui/views/brave_ads/ad_notification_popup.h
+++ b/browser/ui/views/brave_ads/ad_notification_popup.h
@@ -101,6 +101,7 @@ class AdNotificationPopup : public views::WidgetDelegateView,
   gfx::Point GetOriginForSize(const gfx::Size& size);
   void SaveOrigin(const gfx::Point& origin) const;
 
+  gfx::Size CalculateViewSize() const;
   gfx::Rect CalculateBounds();
 
   void RecomputeAlignment();