diff --git a/account/src/lib/couch-db.ts b/account/src/lib/couch-db.ts
index ebc81f0..dfd3343 100644
--- a/account/src/lib/couch-db.ts
+++ b/account/src/lib/couch-db.ts
@@ -106,6 +106,7 @@ export async function updateLingdocsUser(uuid: T.UUID, toUpdate:
     wordlistDbName: T.WordlistDbName,
     couchDbPassword: T.UserDbPassword,
     upgradeToStudentRequest: undefined,
+    subscriptionId: string | undefined, 
   } |
   {
     level: "basic",
diff --git a/account/src/lib/sample-users.ts b/account/src/lib/sample-users.ts
index b11965b..ebb1b77 100644
--- a/account/src/lib/sample-users.ts
+++ b/account/src/lib/sample-users.ts
@@ -28,6 +28,7 @@ const student: AT.LingdocsUser = {
     "lastActive":1630414108552 as AT.TimeStamp,
     "couchDbPassword": "12345" as AT.UserDbPassword,
     "wordlistDbName": "jim-db" as AT.WordlistDbName,
+    subscriptionId: undefined,
 };
 
 const admin: AT.LingdocsUser = {
@@ -45,6 +46,7 @@ const admin: AT.LingdocsUser = {
     "lastActive":1630414108552 as AT.TimeStamp,
     "couchDbPassword": "12345" as AT.UserDbPassword,
     "wordlistDbName": "jim-db" as AT.WordlistDbName,
+    subscriptionId: undefined,
 };
 
 const editor: AT.LingdocsUser = {
@@ -61,6 +63,7 @@ const editor: AT.LingdocsUser = {
     "lastActive":1630414108552 as AT.TimeStamp,
     "couchDbPassword": "12345" as AT.UserDbPassword,
     "wordlistDbName": "jim-db" as AT.WordlistDbName,
+    subscriptionId: undefined,
 };
 
 // @ts-ignore
diff --git a/account/src/lib/user-utils.ts b/account/src/lib/user-utils.ts
index 8754cf7..ce30f6a 100644
--- a/account/src/lib/user-utils.ts
+++ b/account/src/lib/user-utils.ts
@@ -16,6 +16,12 @@ import {
 } from "../lib/mail-utils";
 import { outsideProviders } from "../middleware/setup-passport";
 import * as T from "../../../website/src/types/account-types";
+import env from "../lib/env-vars";
+import Stripe from "stripe";
+
+const stripe = new Stripe(env.stripeSecretKey, {
+    apiVersion: "2022-08-01",
+});
 
 function getUUID(): T.UUID {
     return uuidv4() as T.UUID;
@@ -51,7 +57,7 @@ export function getEmailFromGoogleProfile(profile: T.GoogleProfile): { email: st
     };
 }
 
-export async function upgradeUser(userId: T.UUID): Promise<T.UpgradeUserResponse> {
+export async function upgradeUser(userId: T.UUID, subscriptionId?: string): Promise<T.UpgradeUserResponse> {
     // add user to couchdb authentication db
     const { password, userDbName } = await addCouchDbAuthUser(userId);
     // // create user db
@@ -61,6 +67,7 @@ export async function upgradeUser(userId: T.UUID): Promise<T.UpgradeUserResponse
         wordlistDbName: userDbName,
         couchDbPassword: password,
         upgradeToStudentRequest: undefined,
+        subscriptionId,
     });
     if (user.email) {
         sendAccountUpgradeMessage(user).catch(console.error);
@@ -72,8 +79,11 @@ export async function upgradeUser(userId: T.UUID): Promise<T.UpgradeUserResponse
     };
 }
 
-export async function downgradeUser(userId: T.UUID): Promise<T.DowngradeUserResponse> {
+export async function downgradeUser(userId: T.UUID, subscriptionId?: string): Promise<T.DowngradeUserResponse> {
     await deleteCouchDbAuthUser(userId);
+    if (subscriptionId) {
+        stripe.subscriptions.del(subscriptionId);
+    }
     const user = await updateLingdocsUser(userId, {
         level: "basic",
         wordlistDbName: undefined,
diff --git a/account/src/routers/auth-router.ts b/account/src/routers/auth-router.ts
index 559cb95..8acb9f3 100644
--- a/account/src/routers/auth-router.ts
+++ b/account/src/routers/auth-router.ts
@@ -196,7 +196,9 @@ const authRouter = (passport: PassportStatic) => {
       if (!req.user) {
         return res.redirect("/");
       }
-      await downgradeUser(req.user.userId);
+      await downgradeUser(req.user.userId, "subscriptionId" in req.user
+        ? req.user.subscriptionId
+        : undefined);
       res.redirect("/");
     } catch (e) {
       next(e);
diff --git a/account/src/routers/payment-router.ts b/account/src/routers/payment-router.ts
index e0f27da..4c178f0 100644
--- a/account/src/routers/payment-router.ts
+++ b/account/src/routers/payment-router.ts
@@ -54,7 +54,7 @@ paymentRouter.post(
         subscription = event.data.object;
         status = subscription.status;
         console.log(`Upgrading user ${userId}.`);
-        await upgradeUser(userId);
+        await upgradeUser(userId, subscription.id);
         // TODO: save subscription to db
         break;
       default:
diff --git a/website/src/types/account-types.ts b/website/src/types/account-types.ts
index fb582b1..c12c956 100644
--- a/website/src/types/account-types.ts
+++ b/website/src/types/account-types.ts
@@ -56,6 +56,7 @@ export type LingdocsUser = {
         level: "student" | "editor",
         couchDbPassword: UserDbPassword,
         wordlistDbName: WordlistDbName,
+        subscriptionId: string | undefined,
     }
 ) & import("nano").MaybeDocument;