diff --git a/modules/ppcp-settings/resources/js/data/constants.js b/modules/ppcp-settings/resources/js/data/constants.js
new file mode 100644
index 000000000..61ebf948e
--- /dev/null
+++ b/modules/ppcp-settings/resources/js/data/constants.js
@@ -0,0 +1,2 @@
+export const NAMESPACE = '/wc/v3/wc_paypal';
+export const STORE_NAME = 'wc/paypal';
diff --git a/modules/ppcp-settings/resources/js/data/index.js b/modules/ppcp-settings/resources/js/data/index.js
new file mode 100644
index 000000000..d305bc479
--- /dev/null
+++ b/modules/ppcp-settings/resources/js/data/index.js
@@ -0,0 +1,6 @@
+import { STORE_NAME } from './constants';
+import { initStore } from './store';
+
+initStore();
+
+export const WC_PAYPAL_STORE_NAME = STORE_NAME;
diff --git a/modules/ppcp-settings/resources/js/data/onboarding/action-types.js b/modules/ppcp-settings/resources/js/data/onboarding/action-types.js
new file mode 100644
index 000000000..bc215b491
--- /dev/null
+++ b/modules/ppcp-settings/resources/js/data/onboarding/action-types.js
@@ -0,0 +1,4 @@
+export default {
+	SET_ONBOARDING_DETAILS: 'SET_ONBOARDING_DETAILS',
+	SET_IS_SAVING_ONBOARDING_DETAILS: 'SET_IS_SAVING_ONBOARDING_DETAILS',
+};
diff --git a/modules/ppcp-settings/resources/js/data/onboarding/actions.js b/modules/ppcp-settings/resources/js/data/onboarding/actions.js
new file mode 100644
index 000000000..060e39811
--- /dev/null
+++ b/modules/ppcp-settings/resources/js/data/onboarding/actions.js
@@ -0,0 +1,64 @@
+import { dispatch, select } from '@wordpress/data';
+import { apiFetch } from '@wordpress/data-controls';
+import ACTION_TYPES from './action-types';
+import { NAMESPACE, STORE_NAME } from '../constants';
+
+/**
+ * Persistent. Set the full onboarding details, usually during app initialization.
+ *
+ * @param {Object} payload
+ * @return {{payload, type: string}} The action.
+ */
+export const updateOnboardingDetails = ( payload ) => {
+	return {
+		type: ACTION_TYPES.SET_ONBOARDING_DETAILS,
+		payload,
+	};
+};
+
+/**
+ * Non-persistent. Changes the "saving" flag.
+ *
+ * @param {boolean} isSaving
+ * @return {{type: string, isSaving}} The action.
+ */
+export function updateIsSavingOnboardingDetails( isSaving ) {
+	return {
+		type: ACTION_TYPES.SET_IS_SAVING_ONBOARDING_DETAILS,
+		isSaving,
+	};
+}
+
+/**
+ * Saves the persistent details to the WP database.
+ *
+ * @return {Generator<any>} A generator function that handles the saving process.
+ */
+export function* saveOnboardingDetails() {
+	let error = null;
+
+	try {
+		const settings = select( STORE_NAME ).getOnboardingDetails();
+
+		yield updateIsSavingOnboardingDetails( true );
+
+		yield apiFetch( {
+			path: `${ NAMESPACE }/onboarding`,
+			method: 'POST',
+			data: settings,
+		} );
+
+		yield dispatch( 'core/notices' ).createSuccessNotice(
+			__( 'Progress saved.', 'woocommerce-paypal-payments' )
+		);
+	} catch ( e ) {
+		error = e;
+		yield dispatch( 'core/notices' ).createErrorNotice(
+			__( 'Error saving progress.', 'woocommerce-paypal-payments' )
+		);
+	} finally {
+		yield updateIsSavingOnboardingDetails( false );
+	}
+
+	return error === null;
+}
diff --git a/modules/ppcp-settings/resources/js/data/onboarding/index.js b/modules/ppcp-settings/resources/js/data/onboarding/index.js
new file mode 100644
index 000000000..0b07abf46
--- /dev/null
+++ b/modules/ppcp-settings/resources/js/data/onboarding/index.js
@@ -0,0 +1,6 @@
+import reducer from './reducer';
+import * as selectors from './selectors';
+import * as actions from './actions';
+import * as resolvers from './resolvers';
+
+export { reducer, selectors, actions, resolvers };
diff --git a/modules/ppcp-settings/resources/js/data/onboarding/reducer.js b/modules/ppcp-settings/resources/js/data/onboarding/reducer.js
new file mode 100644
index 000000000..08002f192
--- /dev/null
+++ b/modules/ppcp-settings/resources/js/data/onboarding/reducer.js
@@ -0,0 +1,31 @@
+import ACTION_TYPES from './action-types';
+
+const defaultState = {
+	isSaving: false,
+	data: {
+		step: 0,
+	},
+};
+
+export const onboardingReducer = (
+	state = defaultState,
+	{ type, ...action }
+) => {
+	switch ( type ) {
+		case ACTION_TYPES.SET_ONBOARDING_DETAILS:
+			return {
+				...state,
+				data: action.payload,
+			};
+
+		case ACTION_TYPES.SET_IS_SAVING_ONBOARDING_DETAILS:
+			return {
+				...state,
+				isSaving: action.isSaving,
+			};
+	}
+
+	return state;
+};
+
+export default onboardingReducer;
diff --git a/modules/ppcp-settings/resources/js/data/onboarding/resolvers.js b/modules/ppcp-settings/resources/js/data/onboarding/resolvers.js
new file mode 100644
index 000000000..497d855a3
--- /dev/null
+++ b/modules/ppcp-settings/resources/js/data/onboarding/resolvers.js
@@ -0,0 +1,24 @@
+import { dispatch } from '@wordpress/data';
+import { __ } from '@wordpress/i18n';
+import { apiFetch } from '@wordpress/data-controls';
+import { NAMESPACE } from '../constants';
+import { updateOnboardingDetails } from './actions';
+
+/**
+ * Retrieve settings from the site's REST API.
+ */
+export function* getOnboardingDetails() {
+	const path = `${ NAMESPACE }/onboarding`;
+
+	try {
+		const result = yield apiFetch( { path } );
+		yield updateOnboardingDetails( result );
+	} catch ( e ) {
+		yield dispatch( 'core/notices' ).createErrorNotice(
+			__(
+				'Error retrieving onboarding details.',
+				'woocommerce-paypal-payments'
+			)
+		);
+	}
+}
diff --git a/modules/ppcp-settings/resources/js/data/onboarding/selectors.js b/modules/ppcp-settings/resources/js/data/onboarding/selectors.js
new file mode 100644
index 000000000..522b9a93e
--- /dev/null
+++ b/modules/ppcp-settings/resources/js/data/onboarding/selectors.js
@@ -0,0 +1,17 @@
+const EMPTY_OBJ = {};
+
+const getOnboardingState = ( state ) => {
+	if ( ! state ) {
+		return EMPTY_OBJ;
+	}
+
+	return state.onboarding || EMPTY_OBJ;
+};
+
+export const getOnboardingDetails = ( state ) => {
+	return getOnboardingState( state ).data || EMPTY_OBJ;
+};
+
+export const getOnboardingStep = ( state ) => {
+	return getOnboardingDetails( state ).step || 0;
+};
diff --git a/modules/ppcp-settings/resources/js/data/store.js b/modules/ppcp-settings/resources/js/data/store.js
new file mode 100644
index 000000000..f5a1a4b13
--- /dev/null
+++ b/modules/ppcp-settings/resources/js/data/store.js
@@ -0,0 +1,30 @@
+import { createReduxStore, register, combineReducers } from '@wordpress/data';
+import { controls } from '@wordpress/data-controls';
+import { STORE_NAME } from './constants';
+import * as onboarding from './onboarding';
+
+const actions = {};
+const selectors = {};
+const resolvers = {};
+
+[ onboarding ].forEach( ( item ) => {
+	Object.assign( actions, { ...item.actions } );
+	Object.assign( selectors, { ...item.selectors } );
+	Object.assign( resolvers, { ...item.resolvers } );
+} );
+
+const reducer = combineReducers( {
+	onboarding: onboarding.reducer,
+} );
+
+export const initStore = () => {
+	const store = createReduxStore( STORE_NAME, {
+		reducer,
+		controls,
+		actions,
+		selectors,
+		resolvers,
+	} );
+
+	register( store );
+};