diff --git a/packages/@react-types/autocomplete/src/index.d.ts b/packages/@react-types/autocomplete/src/index.d.ts
index 730892927d3..66b98ee67dd 100644
--- a/packages/@react-types/autocomplete/src/index.d.ts
+++ b/packages/@react-types/autocomplete/src/index.d.ts
@@ -33,6 +33,14 @@ export interface SearchAutocompleteProps<T> extends CollectionBase<T>, Omit<Aria
    * @default 'input'
    */
   menuTrigger?: MenuTriggerAction,
+  /** Handler that is called when the SearchAutocomplete is submitted.
+   * 
+   * A `value` will be passed if the submission is a custom value (e.g. a user types then presses enter).
+   * If the input is a selected item, `value` will be null.
+   * 
+   * A `key` will be passed if the submission is a selected item (e.g. a user clicks or presses enter on an option).
+   * If the input is a custom value, `key` will be null.
+   */
   onSubmit?: (value: string | null, key: Key | null) => void,
   /** An icon to display at the start of the input. */
   icon?: ReactElement | null