How to connect Whop payments to Shopify

Shopify will not let you install Whop as a payment gateway. Whop is not in Shopify's list of payment providers, and on a standard Shopify plan the checkout page belongs to Shopify, so there is no setting anywhere in your admin that connects the two. The approach that does work is to replace the checkout page itself, so the card charge runs through your own Whop account while the rest of your store stays exactly where it is. That is what Pendym does, and this article walks through the whole thing: what is in the way, what the working setup looks like, the three connections in order, how to check it worked, what it costs, and who it is not for.

Why the obvious route does not exist

Two separate things are in the way, and it helps to see them as two things rather than one.

The first is Shopify's payment provider list. Shopify supports a set of third-party gateways that can be switched on from Settings, and Whop is not one of them. There is no field to paste a Whop key into. Even for the gateways that are on the list, Shopify charges an additional transaction fee when you do not use Shopify Payments, so a third-party gateway is not a free swap.

The second is the checkout page. On standard Shopify plans the checkout is Shopify's own page, and full checkout replacement is normally a Shopify Plus feature. So even if Whop were on the gateway list, the page collecting the card would still be Shopify's.

That is why searching for a Whop Shopify integration inside your Shopify admin turns up nothing. The connection has to happen at the checkout, not in the payments settings.

The approach that works: move the checkout, keep the store

Instead of adding Whop inside Shopify's checkout, you point your cart at a hosted checkout that charges the card through your own Whop account. Whop is already a platform for selling digital products, memberships and subscriptions, with its own checkout, payouts and dispute tooling, so the money side is being handled by something built for it.

Everything a shopper sees before the checkout stays in Shopify, and everything you do after an order stays in Shopify too. Only the checkout page and the card charge move.

The prices the buyer sees are not a copy. Pricing at the checkout is quoted live from Shopify: real shipping rates for the address they enter, tax the way your store charges it, discount codes, and the currency of their Shopify Market. The checkout session is prepared while the buyer is still on the cart page, so clicking checkout is a plain page change with the order already priced.

What you need before you start

• A Whop account with a business set up, or the willingness to let Pendym create a payment account in your name during setup.
• A Shopify store you can log into with permission to install apps and edit the theme.
• A card, which you verify with Stripe at signup. This is how the Pendym fee is billed.
• About fifteen minutes.

The three connections, in order

Setup is three connections, and it is easiest to do them in this order. Sign up first at pendym.com with email or Google.

1. Connect your Whop account

1. 1Open the Whop connection step in Pendym.
2. 2Paste three values from Whop: your company id, which starts with biz_, an API key, and a webhook secret.
3. 3If you would rather not gather those yourself, choose the other option and let Pendym create a payment account in your name instead.
4. 4Save. This is the account the cards will be charged through, and the account the payouts land in.

2. Connect your Shopify store

1. 1Click connect Shopify in Pendym and approve the install in your Shopify admin.
2. 2This installs an app called Pendym Connector. With the store connected, the checkout quotes prices live from Shopify, including real shipping rates, tax and discount codes, and paid orders are written back to Shopify afterwards.

3. Turn Pendym on in your theme

Nothing changes for buyers until this last step, which is deliberate. There are two ways to do it.

1. 1The one-click route: Pendym gives you a link that opens the Shopify theme editor with the app embed already switched on. You press Save.
2. 2The manual route: paste one script line into theme.liquid, just before the closing body tag.

<script src="https://pendym.com/shopify-snippet.js" data-store="YOUR_STORE_ID" defer></script>
</body>

If you take the manual route, duplicate your live theme first and paste into the copy. That is ordinary Shopify hygiene, and it means you can preview before anything goes live.

How to check it worked

Do this before you tell anyone. Open your store in a private browser window and behave like a customer.

1. 1Add a product to the cart and click the checkout button.
2. 2Confirm the page that loads is your Pendym checkout, not Shopify's.
3. 3Enter a real delivery address and check the shipping rates match what Shopify would have quoted.
4. 4Check the tax line matches how your store normally charges tax.
5. 5Apply a live discount code and confirm the total moves as expected.
6. 6If you sell in more than one currency, switch market or use a matching address and check the currency is right.
7. 7Place one small real order and follow it all the way through.

What to check on your first real order

The point of the first order is the writeback. Every paid Whop payment writes the matching Shopify order back with the payment recorded, and you want to see that with your own eyes once.

• The order appears in Shopify with the payment recorded against it.
• Inventory has come down for the variant you bought.
• The customer confirmation email went out, and the customer is in your customer list.
• The payment shows in Whop, so you know the payout route is live.
• Your pixels fired, if you set them up. The checkout reports view content, add to cart, begin checkout and purchase to Meta, TikTok and Google once you paste in the IDs.

If a payment comes in short, the order is marked partially paid and held for review rather than sent for fulfilment. If you see one, that is the system doing its job, not a failure.

What happens to your Shopify orders, inventory and customers

This is the part most people are actually worried about, so it is worth being plain. Because paid Whop payments write the order back into Shopify with the payment recorded, everything downstream of an order keeps working the way it did. Fulfilment happens in Shopify. Inventory decrements in Shopify. Customer emails come from Shopify. Your customer list keeps growing in Shopify. Because the order lands in Shopify with the payment recorded, work that runs off Shopify orders carries on. Anything that hooked into Shopify's own checkout page is a separate question, and there is a note on that below.

Subscriptions work too. A Shopify selling plan in the cart becomes a recurring plan at Whop, renewals create new Shopify orders, and cancelling from the Pendym dashboard cancels the plan at Whop.

What it costs, honestly

There is no monthly fee and no setup fee. Pendym charges 0.3% per order, billed to the card you verified with Stripe at signup rather than taken out of your Whop payout, so a payout is never short. On top of that, Whop's own processing fees apply exactly as they would on any Whop sale, so budget for those the same way you would budget for any card processing.

What Shopify charges you on your particular plan is between you and Shopify, and you should read your own plan terms rather than take anyone's word for it. Shopify charges an additional transaction fee when you do not use Shopify Payments. Whether that applies to your store, and at what rate, is something to confirm with Shopify against your own plan terms.

The rest of what you get, briefly

• Branding: layout, colours, custom blocks, a one-page or two-page flow, with a live preview while you edit.
• A custom checkout domain such as checkout.yourstore.com, set up with one CNAME record and verified before any buyer is sent there.
• Order bumps in the order summary, and post-purchase offers charged to the card already on file.
• Fraud rules you configure yourself.
• Disputes: chargebacks come from Whop, because Whop is enrolled with the card networks. They appear in Pendym matched to the order with the response deadline shown, and the evidence packet can be filed back to Whop in one click.

Honest limits, and who this is not for

A few things to weigh before you commit.

• You need to be comfortable with your money arriving through Whop, because that is where the charge and the payout happen. If you do not want a Whop account, this whole approach is not for you.
• Pendym is a young product. If you only adopt software with a long track record, wait.
• Anything that currently adds something to Shopify's own checkout page will not be running on that page any more, because that page is not the one buyers see. Make a list of what you rely on at checkout and check it before you switch on.
• If you are already on Shopify Plus with checkout access, you have other routes available and should compare them.
• If Shopify's checkout is working fine for you and you have no reason to charge through Whop, there is no problem here to solve.

Switching it off

You can turn the Pendym checkout off at any time in Settings. Your checkout button goes back to Shopify's own checkout on the next page load, and there is nothing to remove from your theme. That matters more than it sounds: it means trying this is a reversible decision, not a migration.

Where to start

Start with the Whop side. If you already have a Whop account and business, the three connections take about fifteen minutes and nothing changes for buyers until you switch on the theme embed in step three. Run one small real order through, watch it write back into Shopify with the payment recorded, and then decide whether to leave it on.