diff --git a/README.md b/README.md
index acd1e12..357bd2a 100644
--- a/README.md
+++ b/README.md
@@ -419,6 +419,7 @@ Props:
 - `className`: (Optional) CSS class name
 - `subscriptionId`: (Optional) ID of a subscription to upgrade. It must be on a
   free pricing.
+- `metadata`: (Optional) Metadata for additional information to the checkout
 
 #### CustomerPortalLink
 
diff --git a/src/client/index.ts b/src/client/index.ts
index ab82f7d..30b1943 100644
--- a/src/client/index.ts
+++ b/src/client/index.ts
@@ -105,6 +105,7 @@ export class Polar<
       origin,
       successUrl,
       subscriptionId,
+      metadata,
     }: {
       productIds: string[];
       userId: string;
@@ -112,6 +113,7 @@ export class Polar<
       origin: string;
       successUrl: string;
       subscriptionId?: string;
+      metadata?: Record<string, string>;
     },
   ): Promise<Checkout> {
     const dbCustomer = await ctx.runQuery(
@@ -146,6 +148,7 @@ export class Polar<
       subscriptionId,
       embedOrigin: origin,
       successUrl,
+      metadata,
       ...(productIds.length === 1
         ? { products: productIds }
         : { products: productIds }),
@@ -309,6 +312,7 @@ export class Polar<
           origin: v.string(),
           successUrl: v.string(),
           subscriptionId: v.optional(v.string()),
+          metadata: v.optional(v.record(v.string(), v.string())),
         },
         returns: v.object({
           url: v.string(),
@@ -322,6 +326,7 @@ export class Polar<
             subscriptionId: args.subscriptionId,
             origin: args.origin,
             successUrl: args.successUrl,
+            metadata: args.metadata,
           });
           return { url };
         },
diff --git a/src/react/index.tsx b/src/react/index.tsx
index c5c68bd..252536b 100644
--- a/src/react/index.tsx
+++ b/src/react/index.tsx
@@ -40,12 +40,14 @@ export const CheckoutLink = ({
   children,
   className,
   subscriptionId,
+  metadata,
   theme = "dark",
   embed = true,
 }: PropsWithChildren<{
   polarApi: Pick<PolarComponentApi, "generateCheckoutLink">;
   productIds: string[];
   subscriptionId?: string;
+  metadata?: Record<string, string>;
   className?: string;
   theme?: "dark" | "light";
   embed?: boolean;
@@ -60,10 +62,11 @@ export const CheckoutLink = ({
     void generateCheckoutLink({
       productIds,
       subscriptionId,
+      metadata,
       origin: window.location.origin,
       successUrl: window.location.href,
     }).then(({ url }) => setCheckoutLink(url));
-  }, [productIds, subscriptionId, embed, generateCheckoutLink]);
+  }, [productIds, subscriptionId, metadata, embed, generateCheckoutLink]);
 
   return (
     <a