diff --git a/packages/components/src/notice/types.ts b/packages/components/src/notice/types.ts
index 1ae9af6be76e55..0e421cfe26a3bc 100644
--- a/packages/components/src/notice/types.ts
+++ b/packages/components/src/notice/types.ts
@@ -23,7 +23,7 @@ type NoticeActionWithOnClick = CommonNoticeActionProps & {
 
 export type NoticeAction = NoticeActionWithURL | NoticeActionWithOnClick;
 
-type NoticeChildren = string | JSX.Element;
+export type NoticeChildren = string | JSX.Element;
 
 export type NoticeProps = {
 	/**
diff --git a/packages/components/src/snackbar/index.tsx b/packages/components/src/snackbar/index.tsx
index 833d9dce8d30ff..f95a0c88afe473 100644
--- a/packages/components/src/snackbar/index.tsx
+++ b/packages/components/src/snackbar/index.tsx
@@ -16,7 +16,8 @@ import warning from '@wordpress/warning';
  * Internal dependencies
  */
 import Button from '../button';
-import type { NoticeAction, SnackbarProps } from './types';
+import type { SnackbarProps } from './types';
+import type { NoticeAction } from '../notice/types';
 import type { WordPressComponentProps } from '../ui/context';
 
 const NOTICE_TIMEOUT = 10000;
diff --git a/packages/components/src/snackbar/list.tsx b/packages/components/src/snackbar/list.tsx
index 093c0b3529612d..ebd1fca2518f51 100644
--- a/packages/components/src/snackbar/list.tsx
+++ b/packages/components/src/snackbar/list.tsx
@@ -17,7 +17,7 @@ import {
 	__unstableMotion as motion,
 	__unstableAnimatePresence as AnimatePresence,
 } from '../animation';
-import type { Notice, SnackbarListProps } from './types';
+import type { SnackbarListProps } from './types';
 import type { WordPressComponentProps } from '../ui/context';
 
 const SNACKBAR_VARIANTS = {
@@ -61,7 +61,9 @@ export function SnackbarList( {
 	const listRef = useRef< HTMLDivElement | null >( null );
 	const isReducedMotion = useReducedMotion();
 	className = classnames( 'components-snackbar-list', className );
-	const removeNotice = ( notice: Notice ) => () => onRemove?.( notice.id );
+	const removeNotice =
+		( notice: SnackbarListProps[ 'notices' ][ number ] ) => () =>
+			onRemove?.( notice.id );
 	return (
 		<div className={ className } tabIndex={ -1 } ref={ listRef }>
 			{ children }
diff --git a/packages/components/src/snackbar/types.ts b/packages/components/src/snackbar/types.ts
index 46c9a8e67e8cfb..71ded92e5b7d11 100644
--- a/packages/components/src/snackbar/types.ts
+++ b/packages/components/src/snackbar/types.ts
@@ -1,116 +1,42 @@
 /**
  * External dependencies
  */
-import type { MutableRefObject, ReactNode, SyntheticEvent } from 'react';
+import type { MutableRefObject, ReactNode } from 'react';
 
-export type NoticeActionWithURL = {
-	label: string;
-	url: string;
-	onClick?: ( event: SyntheticEvent ) => void;
-};
-
-type NoticeActionWithOnClick = {
-	label: string;
-	url?: string;
-	onClick: ( event: SyntheticEvent ) => void;
-};
-
-// TODO: move this type to the Notice component once it gets typed.
-export type NoticeAction = NoticeActionWithURL | NoticeActionWithOnClick;
-
-export type Notice = {
-	id: string;
-	spokenMessage: string;
-	actions: NoticeAction[];
-	icon?: ReactNode;
-	onDismiss?: () => void;
-	content: string;
-	isDismissible: boolean;
-	explicitDismiss: boolean;
-};
+/**
+ * Internal dependencies
+ */
+import type { NoticeProps, NoticeChildren } from '../notice/types';
 
-export type SnackbarProps = {
-	/**
-	 * The displayed message of a notice.
-	 *
-	 * Also used as the spoken message for assistive technology,
-	 * unless `spokenMessage` is provided as an alternative message.
-	 */
-	children: string;
-	/**
-	 * Used to provide a custom spoken message.
-	 *
-	 * @default children
-	 */
-	spokenMessage?: Notice[ 'spokenMessage' ];
-	/**
-	 * A politeness level for the notice's spoken message. Should be provided as
-	 * one of the valid options for an `aria-live` attribute value. Note that this
-	 * value should be considered a suggestion; assistive technologies may
-	 * override it based on internal heuristics.
-	 *
-	 * A value of `'assertive'` is to be used for important, and usually
-	 * time-sensitive, information. It will interrupt anything else the screen
-	 * reader is announcing in that moment.
-	 * A value of `'polite'` is to be used for advisory information. It should
-	 * not interrupt what the screen reader is announcing in that moment
-	 * (the "speech queue") or interrupt the current task.
-	 *
-	 * @see https://www.w3.org/TR/wai-aria-1.1/#aria-live
-	 *
-	 * @default 'polite'
-	 */
-	politeness?: 'polite' | 'assertive';
-	/**
-	 * An array of action objects.
-	 *
-	 * Each member object should contain
-	 * a `label` and either a `url` link string or `onClick` callback function.
-	 *
-	 * @default []
-	 */
-	actions?: Notice[ 'actions' ];
-	/**
-	 * Called to remove the snackbar from the UI.
-	 */
-	onRemove?: () => void;
+type SnackbarOnlyProps = {
 	/**
 	 * The icon to render in the snackbar.
 	 *
 	 * @default null
 	 */
-	icon?: Notice[ 'icon' ];
+	icon?: ReactNode;
 	/**
 	 * Whether to require user action to dismiss the snackbar.
 	 * By default, this is dismissed on a timeout, without user interaction.
 	 *
 	 * @default false
 	 */
-	explicitDismiss?: Notice[ 'explicitDismiss' ];
-	/**
-	 * A callback executed when the snackbar is dismissed.
-	 *
-	 * It is distinct from onRemove, which _looks_ like a callback but is
-	 * actually the function to call to remove the snackbar from the UI.
-	 */
-	onDismiss?: Notice[ 'onDismiss' ];
+	explicitDismiss?: boolean;
 	/**
 	 * A ref to the list that contains the snackbar.
 	 */
 	listRef?: MutableRefObject< HTMLDivElement | null >;
 };
 
+export type SnackbarProps = NoticeProps & SnackbarOnlyProps;
+
 export type SnackbarListProps = {
-	/**
-	 * Array of notices to render.
-	 */
-	notices: Notice[];
-	/**
-	 * Children to be rendered inside the notice list.
-	 */
-	children?: ReactNode;
-	/**
-	 * Function called when a notice should be removed / dismissed.
-	 */
-	onRemove?: ( id: Notice[ 'id' ] ) => void;
+	notices: Array<
+		Omit< SnackbarProps, 'children' > & {
+			id: string;
+			content: string;
+		}
+	>;
+	onRemove: ( id: string ) => void;
+	children?: NoticeChildren | Array< NoticeChildren >;
 };