A UK founder running a mid-size homeware store asked us a blunt question last month. Why was she paying an extra 1.5% on every single order when Shopify already had a payment option built in?
She'd been using a third-party gateway since launch, mostly out of habit. Nobody had ever walked her through the shopify payments vs third party checkout decision properly. She'd just kept the setup her original developer chose three years ago.
That 1.5% doesn't sound dramatic until you run the maths. On £40,000 a month in sales, it's £600 leaving the business every single month for no real benefit. Over a year, that's enough to fund a part-time hire.
Multiply that across a few thousand UK Shopify stores making the same quiet mistake, and you start to see why this question comes up so often with founders who've never actually compared the two options side by side.
This guide breaks down what Shopify Payments actually is, where a third-party gateway earns its keep, and how to decide between the two without guessing. We'll also cover where Shopify Plus and Shopify POS change the calculation, since the maths shifts once you're running a bigger store or a physical till alongside your online one.
What Shopify Payments Actually Is
Shopify Payments is Shopify's own payment processor, built directly into the platform and powered by Stripe's infrastructure under the hood. You don't sign up with a separate company.
There's no extra app to install, and transactions settle straight into your connected bank account.
Because it's native, Shopify waives its additional transaction fee when you use it. Every other gateway, from PayPal to Braintree to Worldpay, gets charged that extra percentage on top of whatever the gateway itself charges you. That's the single biggest reason most UK merchants default to it.
It also supports Shop Pay, Apple Pay, and Google Pay out of the box. That matters more than people expect.
Shop Pay alone has been shown to lift checkout conversion meaningfully. It pre-fills saved card details for returning shoppers across any Shop Pay-enabled store, not just yours.
For a straightforward UK store selling physical goods to UK and EU customers, Shopify Payments is usually the right default. It's simpler to reconcile, support sits inside Shopify's own help desk, and you're not managing a second vendor relationship.
Where It Falls Short
Shopify Payments isn't available everywhere, and even where it is, it doesn't cover every payment method a niche audience might expect.
If a meaningful chunk of your customers pay with something regional, like iDEAL in the Netherlands or certain BNPL schemes popular outside the UK, you may need a secondary gateway anyway.
It also locks you into Shopify's payout schedule and dispute process. That's fine until you hit a chargeback dispute that drags on, at which point some merchants wish they had more direct control over the resolution path.
What A Third-party Checkout Actually Buys You
A third-party gateway, think Braintree, Worldpay, Adyen, or a regional specialist, earns its place when your business has a specific requirement Shopify Payments can't meet.
Three scenarios come up again and again with UK clients.
- High-risk categories. Supplements, CBD, and certain subscription models get flagged or rejected by Shopify Payments' underwriting. A specialist high-risk gateway will actually accept you.
- Multi-currency complexity. Selling heavily into markets where local payment rails, not just local currency display, matter. Some gateways handle this more natively than Shopify Payments does.
- Existing merchant relationships. A Shopify Plus brand that already negotiated custom rates with a processor for its other sales channels sometimes keeps that relationship for consistency across its stack.
None of these apply to most small and mid-size UK stores. If you're selling homeware, apparel, skincare, or general consumer goods domestically and into the EU, you're very likely paying the third-party tax for no structural reason.
Ask yourself honestly whether your setup fits one of the three scenarios above. If it doesn't, the extra fee is just a cost nobody's questioned yet, sitting quietly on every order you process.
There's also a conversion cost worth naming directly. Checkout flows that route through a third-party gateway sometimes add a redirect step, an extra page load, or a design that doesn't match your storefront.
Every added step is a chance for a shopper to abandon. Shopify's own native checkout keeps everything on-domain and tested at scale across millions of stores.
A redirect might only cost you a second or two of load time. Multiply that across thousands of checkouts a month, though, and the abandonment math adds up fast, especially on mobile where patience for extra steps is thin.
The Real Comparison, Side By Side
Here's how the two options actually stack up for a UK merchant weighing this decision today.
- Fees. Shopify Payments avoids the extra transaction surcharge. Any other gateway adds roughly 0.5% to 2% depending on your Shopify plan tier, on top of the gateway's own processing rate.
- Payout speed. Shopify Payments typically settles in a few business days to a UK bank account. Third-party timing varies by provider and can be slower or faster depending on your agreement.
- Checkout experience. Native checkout with Shop Pay, Apple Pay, and Google Pay baked in, versus a potentially redirected or custom flow.
- Dispute handling. Shopify manages chargebacks directly. A third-party gateway means a separate support channel and process.
- Flexibility. Third-party gateways win on niche payment methods, high-risk category acceptance, and existing negotiated rates.
For most stores doing under £1 million a year in UK and EU sales, Shopify Payments wins on points one through three, and the fourth and fifth only matter if your category or geography genuinely demands it.
Above that revenue threshold, it's worth revisiting the comparison with real numbers rather than assumptions, since negotiated rates and volume discounts start to change the picture on both sides.
What About Shopify Plus And Shopify POS
If you're on Shopify Plus, you get more negotiating room on Shopify Payments rates directly with Shopify. That closes even more of the gap that used to justify a third-party switch.
Plus merchants running both online and physical retail through Shopify POS also benefit from unified reporting when payments stay on one processor, rather than reconciling two systems across channels.
This matters more than it sounds. A founder running a market stall alongside her Shopify store told us reconciling two separate payment reports every month was costing her bookkeeper two extra hours a week. Consolidating onto Shopify Payments across both channels cut that admin close to zero.
How To Actually Decide
Don't start from the provider. Start from your transaction data.
Pull the last three months of orders. Check where your customers are based, what payment methods they actually use at checkout, and whether you've had underwriting friction with Shopify Payments already.
If you're a standard UK/EU consumer goods store with no high-risk category and no existing negotiated processor deal, switching to Shopify Payments is close to a free win.
If you're in a flagged category, or a meaningful share of revenue comes from a market with a dominant local payment method Shopify Payments doesn't support well, keep or add the third-party option for that segment specifically rather than ripping out your whole setup.
A hybrid approach, Shopify Payments as the default with a secondary gateway available for edge cases, is also valid and something a lot of growing stores land on eventually.
The decision doesn't need to be permanent, either. Stores move between setups as they grow, add new markets, or shift category. Revisit it once a year rather than leaving it on autopilot for three.
Takeaways
- Shopify Payments removes the extra transaction fee that every other gateway carries on top of its own processing rate.
- Third-party gateways earn their place for high-risk categories, specific regional payment rails, or existing negotiated processor deals.
- Checkout experience and conversion usually favour the native, on-domain Shopify Payments flow.
- Shopify Plus merchants get better negotiated rates, closing even more of the gap with third-party options.
- Pull your actual transaction data before switching either way, don't decide on habit or what a previous developer set up.
If your store's checkout setup hasn't been reviewed since launch, it's worth a proper look rather than assuming the original choice still fits. We work with ecommerce founders on website design and build decisions like this one as part of broader storefront projects, and it's a quick audit to run even if payments turn out fine as they are.
This sits close to a few related decisions worth reading if you're mid-build: our take on Shopify versus a fully custom build, and whether a Shopify partner or an in-house developer is the better fit for ongoing work. If you're still comparing platforms more broadly, our piece on web design company versus web development company covers how to pick the right partner type for a storefront rebuild.
For a wider view on vetting an agency to handle the technical side of a Shopify project, our comparison framework is a useful starting point, and our case studies show the kind of work we take on beyond payments and checkout specifically. If you want a second opinion on your current setup, a quick call is usually enough to tell you whether it's worth changing anything at all.