Shopify's Shop Pay has over 200 million users. Merchants who enable it see conversion rates jump 50% compared to guest checkout. On mobile, the lift is 91%. Setting up Shop Pay is one of the fastest ways to improve your store's checkout performance.

Those aren't aspirational numbers from a sales deck. They come directly from Shopify's transaction data across millions of stores. And yet a surprising number of Shopify merchants either haven't turned Shop Pay on, don't realize it requires Shopify Payments, or activated it months ago without completing the setup — which means payments get refunded automatically after 21 days.

If your mobile conversion rate lags behind desktop (and it almost certainly does — mobile converts at roughly 1.8% vs. 3.5% on desktop across ecommerce), Shop Pay is the single fastest lever you can pull to close that gap. No app to install. No code to write. Just settings you need to configure correctly.

What Is Shop Pay and How Does It Work?

Shop Pay is Shopify's accelerated checkout. It saves a customer's email, shipping address, and payment info so returning shoppers can complete purchases with a single tap. Shopify reports that 75% of Shop Pay users finish checkout this way — one tap, done.

It's not a separate payment processor. It's not a BNPL product (that's Shop Pay Installments, a different feature). And it's not the Shop app, though they're connected.

Shop Pay runs on top of Shopify Payments. Your transactions still process at your existing Shopify Payments rates. There's no additional fee for enabling it. Customers check out up to 4x faster than traditional checkout, which is why mobile conversion improves so dramatically — mobile shoppers have less patience for typing addresses and card numbers on small screens.

Check Your Eligibility Before You Start

Shop Pay requires Shopify Payments. Full stop. If you're using a third-party payment gateway as your primary processor, you can only activate Shop Pay if your store is located in Australia, France, or the United States.

For everyone else, the path is straightforward:

You must have Shopify Payments activated. If you're on a third-party gateway, you'll need to either switch to Shopify Payments or add it alongside your existing provider (where supported).
Your store must be in a Shopify Payments-supported country. This currently covers 23 countries including the US, Canada, UK, Australia, and most of the EU.
You need to sell physical or digital products. Some restricted product categories (firearms, certain supplements, adult content) are ineligible for Shopify Payments and therefore Shop Pay.

To check if Shopify Payments is available in your country, go to Settings → Payments in your Shopify admin. If you see the option to activate Shopify Payments, you're eligible.

Activate Shop Pay in 5 Minutes

If Shopify Payments is already active, enabling Shop Pay takes about 5 minutes:

Go to Settings → Payments in your Shopify admin.
In the Shopify Payments section, click Manage.
Scroll to the Shop Pay section.
Check the box that says Enable Shop Pay.
Click Save.

After saving, you'll see a Complete set up button in the Shop Pay section. Click it and enter your business details and banking information. This step is critical — if you skip it, Shopify will automatically refund all Shop Pay payments after 21 days.

Once setup is complete, Shop Pay buttons appear automatically on your product pages, cart page, and checkout. No theme editing required.

Enable the Other Express Checkout Options While You're Here

Shop Pay works best when it's part of a full express checkout lineup. While you're in the Payments settings, enable these too:

Apple Pay — covers iPhone and Safari users who don't have Shop Pay accounts. No additional setup beyond checking the box.
Google Pay — covers Android users and Chrome on desktop. Same one-click activation.
PayPal — still the most recognized payment brand globally. Many customers default to it.

Each express checkout method catches a different segment of your traffic. A customer who doesn't have a Shop Pay account might have Apple Pay configured on their phone. The goal is to give every visitor a one-tap option, regardless of their device or preferred payment method.

To manage which buttons appear and in what order, go to Settings → Payments → Express checkout. You can reorder them — put your highest-converting option first.

3 Shop Pay Settings Most Shopify Merchants Miss

Activating Shop Pay is step one. These three settings determine whether it actually performs:

1. Express checkout button placement. By default, express checkout buttons show on your cart page. But they should also appear on individual product pages. Go to Online Store → Themes → Customize, navigate to a product page, and make sure the dynamic checkout button (labeled "Buy it now" or showing the Shop Pay logo) is enabled. Many themes support this out of the box — if yours doesn't, switch to a Shopify 2.0 theme that does.

2. Checkout branding. Go to Settings → Checkout → Checkout appearance and ensure your checkout page matches your store's branding. A jarring visual transition between your store and checkout erodes trust. When customers see consistent colors, logo, and typography through to the payment step, completion rates improve. For a deeper look at what you can customize, see our guide to Shopify checkout customization.

3. Shop Pay Installments. If you're in the US, Canada, or UK, you can enable Shop Pay Installments alongside regular Shop Pay. This lets customers split purchases between $35 and $30,000 into four interest-free payments or monthly installments. It's a separate toggle in your Payments settings under the Shop Pay section. For stores with an average order value above $50, installments can meaningfully lift conversion — especially on mobile where price sensitivity is higher.

Test Your Setup Before You Assume It Works

Plenty of merchants enable Shop Pay and never actually test the customer experience. Here's how to verify everything works:

Open your store on your phone. Not your desktop pretending to be mobile — your actual phone. Navigate to a product page and look for the Shop Pay button.
Try the express checkout flow. Use Shopify's test mode (Settings → Payments → Shopify Payments → Edit → Enable test mode) to simulate a purchase. Walk through the entire flow from product page to order confirmation.
Check the order in your admin. After the test purchase, go to Orders and confirm the payment method shows as Shop Pay. Verify the order details are complete.
Check on multiple devices. Test on both iOS and Android. Make sure Apple Pay shows for iPhone users and Google Pay shows for Android users alongside Shop Pay.

If the Shop Pay button doesn't appear, the most common causes are: Shop Pay isn't fully set up (check for the "Complete set up" prompt), your theme doesn't support dynamic checkout buttons (update or switch themes), or your products fall into a restricted category.

Track Whether Shop Pay Is Actually Moving the Needle

After a week of Shop Pay being live, check your numbers. Go to Analytics → Reports and look at two things:

Payment method breakdown. What percentage of orders come through Shop Pay vs. regular checkout? If Shop Pay adoption is below 10%, your buttons might not be visible enough on product pages.
Mobile conversion rate. Compare your mobile conversion rate from the past 30 days with the 30 days before Shop Pay activation. The average Shopify store converts at 1.4–1.8% overall. If your mobile rate is trending toward your desktop rate, Shop Pay is working.

During Black Friday/Cyber Monday 2024, Shop Pay usage jumped 58% year-over-year. The acceleration happens because each customer who uses Shop Pay once has their info saved for every Shopify store — so as more stores enable it, more customers have it ready to go. The network effect works in your favor.

When Shop Pay Isn't Enough

Shop Pay solves the speed problem at checkout. It doesn't solve every conversion problem.

If your mobile conversion is still low after enabling express checkout, the bottleneck is probably upstream: slow page loads, confusing product pages, or a complicated path from landing page to checkout. Shop Pay optimizes the last step. If customers aren't reaching that step, you need to fix your mobile conversion funnel before it.

Also worth noting: Shop Pay works for card-based transactions. If your customers primarily pay cash on delivery, Shop Pay won't apply to those orders. It's built for markets where card and digital wallet payments are the norm.

The setup takes 5 minutes. The conversion lift is measurable within a week. If you're on Shopify Payments and you haven't enabled Shop Pay yet, there's no reason to wait — it's the highest-ROI checkout change you can make without spending a dollar.