Is Square right for your business?

Square is useful when customers pay you in more than one way. A mobile hairdresser can send a deposit link, a florist can take orders online and in the shop, and a café can sell gift cards or collection orders without opening another payment account for every job.

You can start with a simple payment link or invoice. If the business grows, the same Square account can also cover a website, subscriptions, a till and card readers. That joined-up approach is the main reason to consider it.

The trade-off is that “Square online payments” covers several products with different fees. Square lists online store, Online Checkout and ecommerce API payments at 1.4% + 25p for UK cards and 2.5% + 25p for non-UK cards. Manually entered payments and invoices are 2.5%, with an additional 1.5% for non-UK cards. In-person UK card payments are 1.75%. Apply the correct rate to each channel.

Square is less suitable when you are building a complicated software product, running an international marketplace or negotiating very large payment volumes. For a salon collecting deposits, a shop joining counter and online sales, or a tradesperson sending invoices, its simplicity may be worth more than features you will never use.

Square at a glance

What can Square do for you?

There is no single product button labelled “the gateway” that covers every use. The term usually refers to one or more of these Square routes:

• Payment Links create a Square-hosted page that can be shared without a website.
• Square Online provides a website and online store linked to Square.
• Checkout API generates hosted checkout links from software or a website.
• Web Payments SDK embeds card and wallet payment components in a custom web checkout.
• Invoices sends a formal request to a named customer.
• Subscriptions handles authorised recurring charges.
• Ecommerce integrations connect Square to supported website platforms.

Square offers ready-made payment pages as well as tools a developer can use to build a custom checkout. Invoices and hosted checkout links are the simpler routes. A built-in website checkout gives you more control but also more responsibility. This was checked in Square's online payment guide on 11 September 2026.

Current Square UK payment fees

The table uses public prices checked on Square's UK pricing page on 11 September 2026. Your account may have a custom rate, and optional software or accelerated transfers can add cost.

Square’s Free plan is £0 a month plus processing fees. Paid Plus plans start at £29 a month and add sector-specific software. Do not add a restaurant, retail or appointments subscription to a gateway comparison unless you need those functions.

Worked costs: fixed fees and payment channels

Example 1: 400 online orders

Assumptions: £10,000 monthly online turnover, 400 successful UK-card orders, no refunds or disputes, all processed at 1.4% + 25p.

• Percentage fee: £10,000 × 1.4% = £140
• Fixed fee: 400 × £0.25 = £100
• Total: £240 a month, or 2.4% of sales

If the same turnover came from 100 orders, the percentage fee stays £140 but fixed fees fall to £25. Total becomes £165, or 1.65%. A gateway quote that compares only percentages misses this basket-size effect.

Example 2: a salon using three channels

Assume a salon takes £3,000 in online UK-card deposits across 150 payments, £9,000 of in-person UK-card balances, and £1,000 of UK-card invoice payments. No paid software or instant transfers are included.

• Deposits: £3,000 × 1.4% + 150 × 25p = £42 + £37.50 = £79.50
• In-person balances: £9,000 × 1.75% = £157.50
• Invoices: £1,000 × 2.5% = £25.00
• Total processing: £262.00 a month

You cannot assume the cheapest website rate applies to a £1,000 invoice because the customer is paying in a different way. Work out what each suitable option costs, then choose the one that makes sense for both you and the customer.

Example 3: non-UK customers

Suppose 20% of the £10,000 online turnover in Example 1 uses non-UK cards, with the same 400-order pattern and 80 international orders.

• UK share: £8,000 × 1.4% + 320 × 25p = £112 + £80 = £192
• Non-UK share: £2,000 × 2.5% + 80 × 25p = £50 + £20 = £70
• Total: £262, £22 more than the all-UK scenario

Use a real card-origin report. Do not infer card origin from the customer’s delivery address.

The best Square route for each job

Payment Links: fastest for deposits and social selling

Payment Links suit a business that needs a secure payment page but not a full store. A photographer can collect a deposit, a club can sell a ticket, and a maker can put a link in a social profile. Square says links can also be used as buy buttons or QR codes.

The weakness is what happens after payment. If the owner must manually match every payer to a booking, stock item or delivery address, the link has moved the admin rather than removed it. Test the confirmation email, reference fields, refund path and reporting before sending it widely. See Square's Payment Links page, checked 11 September 2026.

Square Online: small store plus payments

Square Online is the natural route for an owner who wants a simple web shop joined to Square’s catalogue and in-person sales. It can reduce duplicate product and stock work. Compare the selected website plan, themes, collection options, delivery functions and any paid ecommerce features, not only the processing rate.

An existing ecommerce business should check migration cost and search visibility before replacing its site merely to consolidate payments. A gateway change is smaller than a platform migration.

Invoices: named payment requests and reminders

Invoices fit trades, consultants, wholesalers and service businesses. Square’s core invoices tool can create estimates and invoices, take online payments and track status. Its main pricing page states that invoice card payments cost 2.5%, while the software itself starts at £0 a month. Optional invoice plans may add features.

Use invoices when the document, due date and customer record matter. Use a payment link when the customer simply needs a quick checkout. Square’s Invoices page describes recurring invoices, reminders and tracking; confirm which functions are in the plan you choose.

A custom website checkout when you have developer help

Web Payments SDK can embed Square payment components into a custom website flow. Square handles tokenisation and the Payments API processes the payment. This route provides more control, but the business owns the surrounding code: basket, order state, duplicate prevention, confirmation, fulfilment and monitoring.

The developer documentation says Square handles PCI compliance, chargebacks and disputed payments across its documented online integration routes. That does not make the whole website automatically compliant or secure. Access control, server security, privacy, plugins and the code around the payment component remain the merchant’s responsibility.

Online and in-person payments together

This is Square’s most persuasive advantage. Consider a small homeware shop:

• Products and prices can live in one catalogue.
• The shop takes counter payments with a Square reader.
• Online orders and in-store sales appear in the Square environment.
• A customer can receive an invoice for a special order.
• Staff can refund against the recorded transaction.

You still need to test stock, returns and the reports your accountant needs. One dashboard does not guarantee everything will match perfectly. But having fewer payment systems to check can save useful time at the end of the week.

Read our Square card reader review and Square POS review if the physical checkout is central. Explore the selected Square offer only after deciding which Square product you need.

When does the money reach you?

Square says transfers can be as soon as the next day. Its FAQ describes free transfers to an external bank account in one to two working days, while instant transfers cost 1.5%. Confirm the schedule shown in your account and your bank’s availability.

A new online seller may pay suppliers or postage before the payout arrives. Keep enough cash for fulfilment and refunds. Reconcile gross sales, taxes, processing, refunds and net transfers. If the business uses Square for several channels, add a channel or location reference so the payout can be traced back without a spreadsheet puzzle.

Ask what can change payout availability: unusual order size, a sudden increase in sales, changes in product category or incomplete verification. No responsible guide should promise that every payment is irreversible or instantly available.

Refunds, card-on-file and disputes

Write the refund policy before launch and test a partial refund. Check whether the processing fee is returned, how the customer is notified and how long their bank may take to display the credit.

Card-on-file and manually entered payments cost more because they carry a different risk profile. Obtain the customer’s authority and use Square’s supported flow rather than storing card details yourself. For recurring billing, define cancellation, failed-payment and retry rules.

Dispute handling needs evidence from the surrounding business, such as delivery confirmation, service dates, terms and customer messages. A payment provider can manage the card-network process, but it cannot create evidence that the business never collected.

Strengths for a small business

• A no-code payment link can launch quickly.
• Hosted, online-store and custom integration routes are available.
• Online and in-person sales can share one provider and dashboard.
• The core account and several business tools start without a monthly fee.
• Published blended rates are easier to model than a complex interchange quote.
• The wider Square ecosystem covers POS, appointments, invoices and customer records.

Limitations and watch-outs

• The 25p online fixed fee is expensive on low-value baskets.
• Invoice and manually entered rates differ from ecommerce rates.
• Non-UK cards cost more in every relevant published category.
• Advanced sector software and instant transfers add cost.
• Complex marketplace, routing or international requirements may exceed the ideal small-business use case.
• Consolidating around one provider can create switching work later, so export and integration options matter.

Alternatives worth comparing

Before you start taking real payments

1. Choose the channel: link, invoice, store, hosted checkout or embedded payment.
2. List expected UK and non-UK card shares and average basket sizes.
3. Confirm software-plan charges and VAT separately from processing.
4. Test successful, failed, abandoned and duplicated payments.
5. Test full and partial refunds.
6. Check order confirmation and fulfilment cannot run twice.
7. Set staff permissions and strong account authentication.
8. Confirm payout bank details and schedule.
9. Connect accounting only after a test sale and refund appear correctly.
10. Review the real effective fee after a full month.

Frequently asked questions

Does Square have a payment gateway?

Yes, in the broad sense that Square provides hosted checkout and APIs for online payment acceptance. It is more accurate to choose a specific Square product, such as Payment Links, Checkout API or Web Payments SDK, than to buy a generic “gateway”.

Is Square Online free?

Square offers a Free account and several tools starting at £0 a month, but processing fees still apply and paid website or sector features may be needed. Price the selected plan, domain and any apps alongside transactions.

How much does Square charge online?

Square lists 1.4% + 25p for UK cards and 2.5% + 25p for non-UK cards through its Online Store, Online Checkout and ecommerce API. Invoices and manually entered payments have different prices.

Can I use Square only for online payments?

Yes. You do not have to buy card-reader hardware to use its online tools. The strongest reason to choose Square is often the option to add in-person and POS functions later, but that is not compulsory.

Is Square cheaper than Stripe?

It depends on basket size and card mix. For a standard UK online card, Square publishes 1.4% + 25p while Stripe publishes 1.5% + 20p. Square is cheaper on the percentage; Stripe is cheaper on the fixed part. At a £50 basket both cost 95p. Other card types and products change the comparison.

Is Square suitable for subscriptions?

Square provides subscription tools and APIs. Confirm the software charge, payment fee, retry behaviour, customer cancellation process and reporting for the exact route. A recurring-payment feature is not a complete membership operation by itself.