Shop Pay vs PayPal: Which Payment Gateway Should You Choose in 2026?

Choosing a payment gateway sounds like a minor decision. It isn’t. The checkout experience directly affects whether a customer completes a purchase or walks away, and in eCommerce, that gap is often where profit hides.

Both Shop Pay and PayPal are widely used, well-supported, and trusted by merchants. But they solve different problems. One is built for speed; the other for reach. Understanding which matters more for your store is what this guide covers.

Shop Pay is Shopify’s own accelerated checkout tool. It stores a customer’s delivery details and payment information securely, so returning shoppers can complete a purchase in two taps rather than filling out forms from scratch.

Because it runs inside the Shopify ecosystem, there’s no third-party redirect the customer stays on your store throughout. That single factor has a measurable impact on cart abandonment rates.

Shop Pay also includes a buy now, pay later option called Shop Pay Instalments, available to eligible customers in the United States, Canada, and the United Kingdom.

PayPal is a global payment platform used by hundreds of millions of consumers worldwide. Shoppers can pay using their PayPal balance, a linked debit or credit card, or a connected bank account.

For many customers, seeing the PayPal logo at checkout is a trust signal. They know how it works, they know buyer protection applies, and that familiarity reduces hesitation, particularly for first-time purchases in stores they haven’t used before.

PayPal also offers Pay Later options in several markets, mirroring the instalment functionality available through Shop Pay.

This is where the platforms diverge most sharply for UK and US merchants.

Shop Pay has no separate transaction fee on top of Shopify Payments rates. Your cost is your Shopify plan rate, no additional percentage for using Shop Pay as the checkout method. For merchants on Shopify’s standard plans, this can translate to a meaningful saving at volume.

PayPal charges its own transaction fees. On top of that, international transactions and currency conversions carry additional charges. If a significant portion of your customers is overseas, those costs accumulate quickly.

For businesses primarily selling to a UK or US audience using Shopify, Shop Pay typically works out cheaper. For stores with a genuinely global customer base, the comparison becomes more nuanced, and PayPal’s reach may justify the higher fees.

Speed matters at checkout more than at almost any other point in the customer journey. Research consistently shows that friction, such as extra clicks, page redirects, and form re-entry, reduces conversion.

Shop Pay’s advantage here is structural. Returning customers get a pre-filled checkout. There’s no redirect. Payment completes in seconds. For stores with repeat customers, this is a genuine conversion tool, not just a convenience feature.

PayPal redirects the customer away from your store to log in and confirm payment, then returns them to the confirmation page. For customers who know and trust PayPal, this is a minor inconvenience. For customers on mobile or with an unstable connection, it’s a drop-off point.

That said, the PayPal button at checkout does capture customers who prefer not to enter card details on unfamiliar sites. For new stores without established trust, that can be valuable.

Both platforms take security seriously. Shop Pay uses encrypted data storage and Shopify’s underlying fraud detection. PayPal offers its own fraud monitoring and, importantly, buyer protection, a formal dispute resolution mechanism that customers know and rely on.

For merchants, PayPal’s buyer protection can cut both ways. Customers feel safer buying, which improves conversion. But it also means chargebacks and disputes are handled on PayPal’s terms, which sometimes favours the buyer.

Neither platform represents a meaningful security risk for reputable merchants. The distinction is more about the trust perception it creates with customers than the actual technical security level.

If you sell internationally, this is where PayPal has a clear edge. PayPal supports over 200 countries and handles multiple currencies natively. For a UK retailer selling into Europe, the US, or further afield, PayPal’s global infrastructure is a practical asset.

Shop Pay’s availability is more limited. It works well for merchants whose primary markets are the UK, US, Canada, and Australia, but if you’re scaling into less common markets, Shop Pay alone won’t cover every customer.

There isn’t a universal right answer, but the decision framework is straightforward.

Choose Shop Pay if:

• You run your store on Shopify
• The majority of your customers are in the UK, US, or Canada
• Check out speed and lower fees are your priority
• You want to reduce cart abandonment with a faster experience for repeat buyers

Choose PayPal if:

• You sell across multiple platforms (Magento, WooCommerce, or a custom build)
• A large portion of your customers is international
• You want the trust signal PayPal’s logo provides, particularly for new or niche stores
• Buyer confidence at checkout matters more than transaction cost

Use both if:

• You want to cover all bases, and many Shopify stores do exactly this. Offering Shop Pay for speed and PayPal for trust gives customers a choice without forcing you to pick between the two.

Adding Shop Pay to Shopify

Shop Pay activates automatically when you enable Shopify Payments. Go to Settings → Payments → Shopify Payments, enable it, then toggle on Shop Pay. Run a test transaction before going live.

If you’re building out a new Shopify store or migrating from another platform, working with certified Shopify developers from the start saves time and avoids technical issues further down the line.

Adding PayPal to Shopify

PayPal integrates directly through Shopify’s payment settings. Go to Settings → Payments → PayPal, connect your PayPal business account, and enable the PayPal button at checkout. Many merchants run this alongside Shop Pay without any conflict.

Adding PayPal to Magento

Magento (Adobe Commerce) supports PayPal through a native extension. Install it, add your API credentials, and configure the display settings for checkout. For more complex Magento builds, particularly those handling multiple currencies or high transaction volumes, it’s worth having an experienced Magento developer configure and test the integration properly.

Having supported over 250 eCommerce projects across Shopify, Magento, and WordPress, our team’s experience is consistent: the stores that convert best tend to offer more than one payment method.

Shop Pay reduces friction for repeat buyers and keeps costs down on Shopify. PayPal builds trust with first-time buyers and covers international markets. Running both isn’t complicated to set up, and the conversion uplift from giving customers a choice is well-documented.

If you’re unsure how your current checkout is affecting sales, or you’re planning a store build or migration, get in touch with our team for a no-obligation conversation. We’re a UK-based team of 30+ certified developers, and we’ve been building eCommerce stores since 2016.