diff --git a/change/@fluentui-react-switch-e81c15fc-676d-4d0a-9912-731bec20916c.json b/change/@fluentui-react-switch-e81c15fc-676d-4d0a-9912-731bec20916c.json
new file mode 100644
index 00000000000000..9917be8d20b44d
--- /dev/null
+++ b/change/@fluentui-react-switch-e81c15fc-676d-4d0a-9912-731bec20916c.json
@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "refactor: add base state hooks for Switch component",
+  "packageName": "@fluentui/react-switch",
+  "email": "copilot@github.com",
+  "dependentChangeType": "patch"
+}
diff --git a/packages/react-components/react-switch/library/src/Switch.ts b/packages/react-components/react-switch/library/src/Switch.ts
index bbdd746cfad93b..4e1341d85147bd 100644
--- a/packages/react-components/react-switch/library/src/Switch.ts
+++ b/packages/react-components/react-switch/library/src/Switch.ts
@@ -1,4 +1,11 @@
-export type { SwitchOnChangeData, SwitchProps, SwitchSlots, SwitchState } from './components/Switch/index';
+export type {
+  SwitchBaseProps,
+  SwitchBaseState,
+  SwitchOnChangeData,
+  SwitchProps,
+  SwitchSlots,
+  SwitchState,
+} from './components/Switch/index';
 export {
   Switch,
   renderSwitch_unstable,
@@ -7,4 +14,5 @@ export {
   switchClassNames,
   useSwitchStyles_unstable,
   useSwitch_unstable,
+  useSwitchBase_unstable,
 } from './components/Switch/index';
diff --git a/packages/react-components/react-switch/library/src/components/Switch/Switch.types.ts b/packages/react-components/react-switch/library/src/components/Switch/Switch.types.ts
index 152358cbcb7438..f36ec83c1806f6 100644
--- a/packages/react-components/react-switch/library/src/components/Switch/Switch.types.ts
+++ b/packages/react-components/react-switch/library/src/components/Switch/Switch.types.ts
@@ -79,7 +79,17 @@ export type SwitchProps = Omit<
   onChange?: (ev: React.ChangeEvent<HTMLInputElement>, data: SwitchOnChangeData) => void;
 };
 
+/**
+ * Switch base props, excluding design-related props like size
+ */
+export type SwitchBaseProps = Omit<SwitchProps, 'size'>;
+
 /**
  * State used in rendering Switch
  */
 export type SwitchState = ComponentState<SwitchSlots> & Required<Pick<SwitchProps, 'labelPosition' | 'size'>>;
+
+/**
+ * Switch base state, excluding design-related state like size
+ */
+export type SwitchBaseState = Omit<SwitchState, 'size'>;
diff --git a/packages/react-components/react-switch/library/src/components/Switch/index.ts b/packages/react-components/react-switch/library/src/components/Switch/index.ts
index 4853a54d26424c..00cbd61b9f6991 100644
--- a/packages/react-components/react-switch/library/src/components/Switch/index.ts
+++ b/packages/react-components/react-switch/library/src/components/Switch/index.ts
@@ -1,7 +1,14 @@
 export { Switch } from './Switch';
-export type { SwitchOnChangeData, SwitchProps, SwitchSlots, SwitchState } from './Switch.types';
+export type {
+  SwitchBaseProps,
+  SwitchBaseState,
+  SwitchOnChangeData,
+  SwitchProps,
+  SwitchSlots,
+  SwitchState,
+} from './Switch.types';
 export { renderSwitch_unstable } from './renderSwitch';
-export { useSwitch_unstable } from './useSwitch';
+export { useSwitch_unstable, useSwitchBase_unstable } from './useSwitch';
 export {
   // eslint-disable-next-line @typescript-eslint/no-deprecated
   switchClassName,
diff --git a/packages/react-components/react-switch/library/src/components/Switch/useSwitch.tsx b/packages/react-components/react-switch/library/src/components/Switch/useSwitch.tsx
index 36dbe57fe6227a..e3ad1dfa4b5b85 100644
--- a/packages/react-components/react-switch/library/src/components/Switch/useSwitch.tsx
+++ b/packages/react-components/react-switch/library/src/components/Switch/useSwitch.tsx
@@ -6,7 +6,7 @@ import { CircleFilled } from '@fluentui/react-icons';
 import { Label } from '@fluentui/react-label';
 import { useFocusWithin } from '@fluentui/react-tabster';
 import { getPartitionedNativeProps, mergeCallbacks, useId, slot } from '@fluentui/react-utilities';
-import type { SwitchProps, SwitchState } from './Switch.types';
+import type { SwitchProps, SwitchState, SwitchBaseProps, SwitchBaseState } from './Switch.types';
 
 /**
  * Create the state required to render Switch.
@@ -18,15 +18,32 @@ import type { SwitchProps, SwitchState } from './Switch.types';
  * @param ref - reference to `<input>` element of Switch
  */
 export const useSwitch_unstable = (props: SwitchProps, ref: React.Ref<HTMLInputElement>): SwitchState => {
+  const { size = 'medium', ...baseProps } = props;
+
+  const baseState = useSwitchBase_unstable(baseProps, ref);
+
+  return {
+    ...baseState,
+    size,
+  };
+};
+
+/**
+ * Base hook for Switch component, manages state and structure common to all variants of Switch
+ *
+ * @param props - base props from this instance of Switch
+ * @param ref - reference to `<input>` element of Switch
+ */
+export const useSwitchBase_unstable = (props: SwitchBaseProps, ref?: React.Ref<HTMLInputElement>): SwitchBaseState => {
   // Merge props from surrounding <Field>, if any
   props = useFieldControlProps_unstable(props, { supportsLabelFor: true, supportsRequired: true });
 
-  const { checked, defaultChecked, disabled, labelPosition = 'after', size = 'medium', onChange, required } = props;
+  const { checked, defaultChecked, disabled, labelPosition = 'after', onChange, required } = props;
 
   const nativeProps = getPartitionedNativeProps({
     props,
     primarySlotTagName: 'input',
-    excludedPropNames: ['checked', 'defaultChecked', 'onChange', 'size'],
+    excludedPropNames: ['checked', 'defaultChecked', 'onChange'],
   });
 
   const id = useId('switch-', nativeProps.primary.id);
@@ -49,13 +66,12 @@ export const useSwitch_unstable = (props: SwitchProps, ref: React.Ref<HTMLInputE
     elementType: Label,
   });
   return {
-    labelPosition, //Slots definition
+    labelPosition,
     components: { root: 'div', indicator: 'div', input: 'input', label: Label },
 
     root,
     indicator,
     input,
     label,
-    size,
   };
 };
diff --git a/packages/react-components/react-switch/library/src/index.ts b/packages/react-components/react-switch/library/src/index.ts
index b2ae66ee66258d..a56507cbe197c8 100644
--- a/packages/react-components/react-switch/library/src/index.ts
+++ b/packages/react-components/react-switch/library/src/index.ts
@@ -8,3 +8,7 @@ export {
   useSwitch_unstable,
 } from './Switch';
 export type { SwitchOnChangeData, SwitchProps, SwitchSlots, SwitchState } from './Switch';
+
+// Experimental APIs - will be uncommented in experimental branch
+// export { useSwitchBase_unstable } from './Switch';
+// export type { SwitchBaseProps, SwitchBaseState } from './Switch';