diff --git a/dev/tools/gen_defaults/lib/tabs_template.dart b/dev/tools/gen_defaults/lib/tabs_template.dart
index f520f617b2..25c895744a 100644
--- a/dev/tools/gen_defaults/lib/tabs_template.dart
+++ b/dev/tools/gen_defaults/lib/tabs_template.dart
@@ -77,6 +77,11 @@ class _${blockName}PrimaryDefaultsM3 extends TabBarTheme {
   TabAlignment? get tabAlignment => isScrollable ? TabAlignment.startOffset : TabAlignment.fill;
 
   static double indicatorWeight = ${getToken('md.comp.primary-navigation-tab.active-indicator.height')};
+
+  // TODO(davidmartos96): This value doesn't currently exist in
+  // https://m3.material.io/components/tabs/specs
+  // Update this when the token is available.
+  static const EdgeInsetsGeometry iconMargin = EdgeInsets.only(bottom: 2);
 }
 
 class _${blockName}SecondaryDefaultsM3 extends TabBarTheme {
diff --git a/packages/flutter/lib/src/material/tabs.dart b/packages/flutter/lib/src/material/tabs.dart
index f630920386..ee2d40f3c1 100644
--- a/packages/flutter/lib/src/material/tabs.dart
+++ b/packages/flutter/lib/src/material/tabs.dart
@@ -107,7 +107,7 @@ class Tab extends StatelessWidget implements PreferredSizeWidget {
     super.key,
     this.text,
     this.icon,
-    this.iconMargin = const EdgeInsets.only(bottom: 10.0),
+    this.iconMargin,
     this.height,
     this.child,
   }) : assert(text != null || child != null || icon != null),
@@ -132,7 +132,10 @@ class Tab extends StatelessWidget implements PreferredSizeWidget {
   ///
   /// Only useful when used in combination with [icon], and either one of
   /// [text] or [child] is non-null.
-  final EdgeInsetsGeometry iconMargin;
+  ///
+  /// Defaults to 2 pixels of bottom margin. If [ThemeData.useMaterial3] is false,
+  /// then defaults to 10 pixels of bottom margin.
+  final EdgeInsetsGeometry? iconMargin;
 
   /// The height of the [Tab].
   ///
@@ -159,11 +162,15 @@ class Tab extends StatelessWidget implements PreferredSizeWidget {
       label = icon!;
     } else {
       calculatedHeight = _kTextAndIconTabHeight;
+      final EdgeInsetsGeometry effectiveIconMargin = iconMargin ??
+        (Theme.of(context).useMaterial3
+          ? _TabsPrimaryDefaultsM3.iconMargin
+          : _TabsDefaultsM2.iconMargin);
       label = Column(
         mainAxisAlignment: MainAxisAlignment.center,
         children: <Widget>[
           Container(
-            margin: iconMargin,
+            margin: effectiveIconMargin,
             child: icon,
           ),
           _buildLabelText(),
@@ -2266,6 +2273,8 @@ class _TabsDefaultsM2 extends TabBarTheme {
 
   @override
   TabAlignment? get tabAlignment => isScrollable ? TabAlignment.start : TabAlignment.fill;
+
+  static const EdgeInsetsGeometry iconMargin = EdgeInsets.only(bottom: 10);
 }
 
 // BEGIN GENERATED TOKEN PROPERTIES - Tabs
@@ -2340,6 +2349,11 @@ class _TabsPrimaryDefaultsM3 extends TabBarTheme {
   TabAlignment? get tabAlignment => isScrollable ? TabAlignment.startOffset : TabAlignment.fill;
 
   static double indicatorWeight = 3.0;
+
+  // TODO(davidmartos96): This value doesn't currently exist in
+  // https://m3.material.io/components/tabs/specs
+  // Update this when the token is available.
+  static const EdgeInsetsGeometry iconMargin = EdgeInsets.only(bottom: 2);
 }
 
 class _TabsSecondaryDefaultsM3 extends TabBarTheme {
diff --git a/packages/flutter/test/material/tabs_test.dart b/packages/flutter/test/material/tabs_test.dart
index 3cc05a412d..74d8ec8e56 100644
--- a/packages/flutter/test/material/tabs_test.dart
+++ b/packages/flutter/test/material/tabs_test.dart
@@ -386,6 +386,45 @@ void main() {
       material3 ? const Size(14.25, 72.0) : const Size(14.0, 72.0));
   });
 
+  testWidgets('Material2 - Default Tab iconMargin', (WidgetTester tester) async {
+    await tester.pumpWidget(MaterialApp(
+      theme: ThemeData(useMaterial3: false),
+      home: const Material(
+        child: Tab(
+          icon: Icon(Icons.house),
+          text: 'x',
+        ),
+      ),
+    ));
+
+    double getIconMargin() {
+      final Rect iconRect = tester.getRect(find.byIcon(Icons.house));
+      final Rect labelRect = tester.getRect(find.text('x'));
+      return labelRect.top - iconRect.bottom;
+    }
+
+    expect(getIconMargin(), equals(10));
+  });
+
+  testWidgets('Material3 - Default Tab iconMargin', (WidgetTester tester) async {
+    await tester.pumpWidget(const MaterialApp(
+      home: Material(
+        child: Tab(
+          icon: Icon(Icons.house),
+          text: 'x',
+        ),
+      ),
+    ));
+
+    double getIconMargin() {
+      final Rect iconRect = tester.getRect(find.byIcon(Icons.house));
+      final Rect labelRect = tester.getRect(find.text('x'));
+      return labelRect.top - iconRect.bottom;
+    }
+
+    expect(getIconMargin(), equals(2));
+  });
+
   testWidgets('Tab color - normal', (WidgetTester tester) async {
     final ThemeData theme = ThemeData(fontFamily: 'FlutterTest');
     final bool material3 = theme.useMaterial3;