How to take card payments online in the UK

To take card payments online in the UK, you need a payment provider that handles the card details for you, such as PayPal, Stripe, Square or a bank’s own service. You connect it to your shop, shoppers pay at checkout, and the money lands in your account a few days later, minus a fee. You don’t need a separate merchant account any more, and you should never handle card numbers yourself.

Below is how it works, how to choose a provider, the rules you need to know, and how to stop payments going wrong.

How online card payments work

When a shopper pays, a lot happens in a couple of seconds. You only need the big picture.

1. 1The shopper types their card details into a secure form run by your payment provider, not by your shop.
2. 2The provider checks with the card network (Visa, Mastercard and so on) and the shopper’s bank.
3. 3The bank may ask the shopper to confirm it’s them, usually in their banking app. This is called 3D Secure.
4. 4The bank approves or declines. Your shop shows a thank-you page or an error.
5. 5The provider pays the money into your bank or wallet, minus its fee, on its usual schedule.

Because the card form belongs to the provider, the card number never touches your website. That keeps you out of most of the heavy security rules, and it’s why you should never ask for card details by email, phone note or a form you built yourself.

Your main options

Wallet-style checkout (e.g. PayPal)

Shoppers can pay with their PayPal balance or with a card, often without an account. Easy to set up and widely trusted.

Payment gateway (e.g. Stripe, Square, Adyen)

A card form that sits inside your checkout. Flexible, and usually supports Apple Pay and Google Pay too.

Your bank’s card service

Some high-street banks offer online card acceptance. Can suit bigger, established businesses, but often has more paperwork.

Built into your shop platform

Many hosted shop platforms come with a payment option already wired in, so there’s nothing to connect.

For a new shop, the simplest route is usually whatever your shop platform supports out of the box. You can always add or switch later.

What it costs

Most providers charge a percentage of each sale plus a small fixed fee per payment. Rates differ for UK cards, international cards, and currency conversion, and they change from time to time, so check each provider’s current pricing page rather than relying on a figure in a blog post.

When you compare, look past the headline rate:

• International cards. If you plan to sell to the US or Ireland, these are often charged at a higher rate.
• Currency conversion. Taking payment in euros or dollars and converting to pounds can add a separate fee.
• Chargeback fees. Many providers charge a fee each time a shopper disputes a payment.
• Payout timing. Some pay out the next working day, others take longer, and new accounts may have money held back at first.
• Your shop platform’s cut. Some platforms add their own fee on every sale on top of the payment provider’s fee. Check before you sign up.

Rules you need to know in the UK

Strong Customer Authentication (SCA). UK rules mean most online card payments need an extra check, usually 3D Secure in the shopper’s banking app. A good provider handles this for you. It adds a step for the shopper, but it also shifts the risk of fraud on those payments away from you in many cases.

No surcharges for paying by card. In the UK you can’t charge consumers extra for paying with a personal debit or credit card. Build card costs into your prices instead.

Card security (PCI DSS). The card industry has security standards for anyone who takes cards. If you use a hosted payment form from a reputable provider, most of the work is done for you, though you may be asked to fill in a short yearly questionnaire.

Clear prices and terms. Shoppers must see the total price, including VAT and delivery, before they pay. Your checkout should also link to your terms, returns policy and privacy policy.

Offer the ways people actually pay

Shoppers abandon checkouts when they can’t pay the way they want. A good mix for a UK shop is:

• Visa and Mastercard debit and credit cards (and American Express if your provider supports it).
• PayPal, which many shoppers trust with a new shop they haven’t used before.
• Apple Pay and Google Pay, which make paying on a phone much faster.

On Merchella, for example, checkout runs through PayPal, so shoppers can pay with PayPal or a card, plus Apple Pay or Google Pay where PayPal supports them, and there’s no Merchella fee on top of PayPal’s own rates.

Keep chargebacks and fraud down

A chargeback is when a shopper asks their bank to reverse a payment. You lose the money, often pay a fee, and too many can put your account at risk. Most are avoidable.

1. 1Use a clear business name that shoppers will recognise on their bank statement.
2. 2Send an order confirmation email straight away, and a dispatch email with tracking.
3. 3Show realistic delivery times on product pages and at checkout, then meet them.
4. 4Make your contact details and returns process easy to find, so people come to you first.
5. 5Reply to every dispute quickly with evidence: the order, the tracking, and any messages.
6. 6Be wary of big first orders with mismatched names and addresses, rushed delivery requests, or several failed card attempts in a row.

Setting it up: a quick checklist

• Choose a provider that works with your shop platform and the countries you sell to.
• Open a business account with the provider and verify your identity and business details.
• Connect it to your shop and switch on cards, wallets and the currencies you need.
• Place a real test order, then refund it, so you see the whole journey.
• Check your statement name, payout schedule and email notifications.
• Add your terms, returns and privacy pages to the checkout.

In short

Taking card payments online in the UK is mostly about picking a trusted provider, connecting it properly and being clear with shoppers. Let the provider handle card details and security checks, compare the full cost rather than the headline rate, never add a card surcharge, and keep your communication tight so disputes stay rare.