Cheapest POS System for UK Small Businesses in 2026
Written by Calvin Lo, Founder of Aphelios Software | September 2026 | Prices verified September 2026
Looking for an affordable POS system? We compared the free and low-cost options pound-for-pound — monthly fees, card rates, reader costs and the price of the extra apps the till doesn't include — so UK small businesses can see the true cheapest setup, not just the cheapest headline. No card reader required: use your existing phone or tablet.
Start Free TrialPOS System Pricing Comparison: UK Small Business
Three providers below offer a £0/month entry point; Aphelios starts with a 14-day free trial (no card) then Starter at £29.99/month — that contrast is precisely why headlines lie. The honest comparison is what each tier includes, what the reader costs, and what the card rate does to a real month of sales. September 2026 published figures:
| Provider | Monthly Cost | Transaction Fee | Card Reader | Hardware Required |
|---|---|---|---|---|
| Aphelios Starter (14-day trial, no card) | £29.99 | Stripe rates (1.5% + 20p) | Not required | Use your phone/tablet |
| SumUp | £0 | 1.69% | £19-£49 | Card reader required |
| Zettle | £0 | 1.75% | £29-£79 | Card reader required |
| Square | £0 | 1.75% | £19-£149 | Card reader required |
| Shopify POS | £29/mo+ | 1.6% | £49-£149 | Card reader required |
Last updated: September 2026. Pricing subject to change. Check provider websites for current pricing.
In-depth comparisons: Aphelios vs SumUp · vs Zettle · vs Square · vs Shopify · Card machine fees explained · How much does a POS cost?
How we ranked "cheapest" (September 2026)
Free monthly fees mean nothing on their own, so we ranked on first-year total cost of ownership: monthly fees × 12, plus card fees on a £2,000/month turnover (£20 average basket), plus the cheapest compatible card reader where one is mandatory. Published prices were checked against each provider's UK pricing page in September 2026. Aphelios figures come from our own product and Stripe's published UK rates.
The headline result: monthly fees are only one ingredient — a £29.99/month system with no reader can still beat a £0/month system with a £49 reader plus a £20/month stock app once the complete setup is counted. Always compare the whole shop, not the till.
The number that decides "cheapest" is not the monthly fee — it is this rate, applied to your turnover.
True first-year cost: £2,000/month card turnover
Same shop, same sales — £2,000/month at a £20 average basket (100 transactions). September 2026 published rates, cheapest compatible reader included once:
| Provider | Monthly fee × 12 | Card fees / year | Reader | Year-one total |
|---|---|---|---|---|
| Aphelios Starter (trial, then £29.99/mo) | £360 (£29.99 × 12) | £600 (1.5% + 20p) | £0 | £960 |
| SumUp | £0 | £406 (1.69%) | £19 | £425 |
| Zettle | £0 | £420 (1.75%) | £29 | £449 |
| Square | £0 | £420 (1.75%) | £19 | £439 |
Two honest conclusions. First, at £2,000/month turnover the reader brands are cheaper in year one on pure cost — SumUp totals £425 against Aphelios Starter's £960 — because a £29.99/month subscription is real money and their card rates are lower. Anyone telling you otherwise is selling something. Second, that £535 gap is the entire price of till, stock control, purchase orders, CRM and invoicing in one login: replicating even half of it alongside SumUp means a stock app (£180–£360/year) plus an invoicing tool, two more logins to reconcile, and still no purchase orders or CRM. "Cheapest till" (SumUp) and "cheapest way to run the shop" (Aphelios, once you need more than card-taking) are different questions — this page answers the second one.
Illustrative example; basket mix and card types change the figures. Confirm current rates on each provider's site.
What does each entry option actually include?
| Included at entry | Aphelios Starter £29.99/mo | SumUp £0 | Zettle £0 | Square £0 |
|---|---|---|---|---|
| Till / checkout | Yes | Yes | Yes | Yes |
| Inventory tracking | Yes | No | Basic | Basic |
| Barcode scanning | Yes (phone) | No | Limited | Paid hardware |
| Purchase orders | Yes | No | No | No |
| CRM / customers | Yes | No | No | No |
| Invoicing | Yes | No | No | No |
| Card reader required | No | Yes (£19+) | Yes (£29+) | Yes (£19+) |
Why a Low-Cost All-in-One Beats a "Free" Till
For a new or small business, every fixed monthly cost is a liability before a single sale is made — which is why the 14-day free trial (no card required) exists: prove the system on your real shop before spending a penny. The three reasons below are why one £29.99 subscription beats a £0 till plus paid extras.
One Subscription, Not Four
Starter at £29.99/month includes POS, inventory, CRM and invoicing. One bill replaces a till plus a stock app plus invoice tool — and the subscriptions you avoid are profit kept.
No Hardware to Buy
Use your existing phone or tablet. No need to buy expensive card readers or terminals. Accept payments via QR codes or payment links.
Scale When Ready
Start with a 14-day free trial and upgrade only when you need more users or advanced features. No lock-in contracts or cancellation fees.
What to Look for in a Cheap POS System
No Hidden Costs
Some "free" POS systems charge for essential features like inventory management, reporting or multi-user access. Check what is actually included before committing. The test is simple: can you run a full trading week — selling, restocking, invoicing and checking profit — without hitting an upgrade screen? On Aphelios (trial, then Starter) you can. On most reader-brand free tiers you meet the paywall by Wednesday, usually at reports or second-user access. Add those upgrade fees to the headline £0 before comparing anything.
Inventory Management Included
A cheap POS system is not cheap if you need to pay for separate inventory software. Look for a platform that includes stock tracking, low stock alerts and purchase orders. Standalone stock apps start around £15/month — £180 a year that wipes out any saving from a marginally cheaper card rate. If you sell goods you can count, the till and the stockroom must be one system; reconciling two of them by hand is a part-time job you are not paying yourself for.
Works on Your Existing Devices
The cheapest POS system is one that works on the phone or tablet you already own. Avoid systems that require expensive proprietary hardware. Beyond the purchase price, proprietary readers create lock-in: leave the provider and the reader becomes a paperweight. Browser-based systems keep every device you own as a potential till, card machine backup and stock-counting scanner simultaneously — three jobs, zero new gadgets.
Competitive Transaction Fees
Even with a low-cost POS system, you will pay transaction fees on card payments. Compare rates: Stripe (used by Aphelios) charges 1.5% + 20p for UK cards. But read the structure, not just the number — a 1.69% flat rate beats 1.5% + 20p on baskets under about £80, and loses above about £105 (divide the 20p fixed fee by the rate gap to check). Coffee carts and craft stalls with small baskets genuinely pay less per sale on SumUp or Zettle; Aphelios competes on everything around the rate — no reader to buy, and stock, purchasing, CRM and invoicing included.
Cheapest options, honestly reviewed
Aphelios Starter — cheapest complete setup (£29.99/mo after trial)
Pros: 14-day free trial with no card; then till, stock, purchasing, CRM, invoicing and Stripe in one subscription; no reader to buy; month-to-month; UK-hosted.
Cons: £29.99/month is real money where reader brands charge £0 — worth it only if you use the bundled stock, purchasing or CRM; card-present chip-and-PIN needs a separate Stripe terminal.
SumUp — cheapest pure card rate (£0 + £19 reader)
Pros: 1.69% is the lowest flat rate; reader from £19; dead simple.
Cons: no barcode scanning, no stock purchasing, no CRM — budget separate apps the moment you carry real inventory.
Zettle — easiest PayPal-adjacent start (£0 + £29 reader)
Pros: familiar brand, gentle learning curve, 1.75% flat.
Cons: limited barcode support, no purchasing or CRM, reader compulsory.
Square — best free ecosystem (£0 + £19 reader)
Pros: polished app, big accessory range, 1.75% flat.
Cons: inventory worth the name sits in paid Retail tiers; no CRM or purchase orders on free.
Affordable POS Terminals for UK Startups
Finding affordable POS terminals for startups and small UK businesses has never been easier. The traditional model of buying expensive hardware and paying monthly software fees is being replaced by modern cloud-based POS systems that work on existing devices and offer free or low-cost plans.
For UK startups watching every pound, the key is to avoid unnecessary costs. You do not need a £200 card reader to start accepting payments. Modern POS systems like Aphelios let you accept payments via QR codes, payment links or Stripe terminals, using the smartphone or tablet you already own.
The cheapest POS system for your UK small business is one that combines software and payments without requiring dedicated hardware. Aphelios starts with a 14-day free trial (no card required), then Starter at £29.99/month includes POS, inventory management, CRM and Stripe payments: no hardware cost, no commitment. As your business grows, Pro (£69.99/month) and Business (£119.99/month) add more users and advanced features.
There is a second saving that never appears in comparison tables: time. A reader-brand till plus a separate stock spreadsheet plus a free CRM means three logins, three places to update prices, and an end-of-month reconciliation evening. Conservatively that is two hours a month — at a modest £15/hour valuation of your own time, £360 a year of unpaid admin. An all-in-one subscription deletes most of that job, which narrows the worked-example gap above substantially once your Sundays are priced in.
When comparing affordable POS options, consider the total cost of ownership: monthly fees, transaction fees, hardware costs and the cost of any additional software you need (inventory, CRM, accounting). An all-in-one platform often works out cheaper than multiple separate subscriptions.
Start your free trial in about ten minutes
- Register with just an email — no card required — and name your shop.
- Add your first ten products by hand (or import the full list as CSV).
- Connect Stripe with two clicks; money settles to your existing bank account.
- Take a £1 test payment via QR code on your own phone and refund it.
- Trade. Add the barcode scanner, purchase orders and CRM only when you feel the need — they are already inside, waiting.
Watch for these hidden fees anywhere
- Chargeback and refund fees — some providers keep the original transaction fee when you refund; Stripe returns it on most UK plans. Check before you promise easy returns.
- Payout delays — "free" plans that hold funds for 7 days cost a market trader a full trading week of cash flow.
- Feature gates — reports, extra users and barcode support are the classic paywalled trio. Aphelios includes all three on every plan; elsewhere, confirm.
- Reader replacements — lost or drowned readers cost £19–£79 a time. A phone-based setup has no single point of failure to replace.
When to upgrade (and when the trial is enough to decide)
Starter (£29.99/month) covers one location and two users — market stalls, pop-ups and single shops. Upgrade to Pro (£69.99/month) the month queues, refunds or staff permissions start causing daily friction, or when you open a second location and need per-location reorder points and proper user roles. The discipline is the same as buying stock: upgrade on evidence of constraint, not on anticipation of growth. Month-to-month billing means no long contract forces the decision — and the 14-day trial exists precisely so you only subscribe once the system has proved itself on your real shop.
Cheapest pick by business type
- Side hustle, under £1,000/month turnover: SumUp — the £19 reader and 1.69% rate are unbeatable when you sell a little and stock nothing.
- Market stall or pop-up with stock: Aphelios trial then Starter (£29.99/mo) — till plus stock, barcode and QR payments with no reader to charge, pair or replace.
- High-street shop: Aphelios Starter (£29.99/mo) — purchasing and CRM included where reader brands charge extra or lack them entirely.
- Café with table turnover as priority: Aphelios for QR table ordering, or Square if you already own its terminals.
Reader maths most comparisons skip
A £19 reader sounds trivial until it meets real life: one dropped in a puddle, one left at home, one whose battery dies mid-Saturday. Budget two readers over three years (£38–£98) plus the Saturday you trade cash-only while waiting for a replacement. Phone-based setups have no equivalent failure — the backup is the other phone in your pocket. Factor that before calling any reader brand "free".
Frequently Asked Questions
What is the cheapest POS system for a small UK business?
The cheapest complete setup for UK small businesses is Aphelios: a 14-day free trial (no card required), then Starter at £29.99/month with POS, inventory, CRM and Stripe payments. No card reader hardware is required: use your existing phone or tablet.
Can I get a POS system with no monthly fee?
SumUp, Zettle and Square offer £0/month tiers, but all require their own card readers and exclude full inventory and CRM. Aphelios offers a 14-day free trial with no card required, then Starter at £29.99/month covering the whole platform — cheaper than a free till plus paid extras.
Do I need to buy a card reader for a cheap POS system?
Not necessarily. Aphelios accepts payments via QR codes and payment links without any card reader hardware. If you prefer a card reader, Stripe terminals are available to purchase separately.
Which POS system is the cheapest in pounds while still offering a solid set of features?
In pounds, entry costs in the UK are: Aphelios (14-day free trial, then £29.99/month Starter for 2 users), SumUp (£0 with card reader from £19), Zettle (£0 with reader from £29) and Square (£0 plus hardware). Aphelios is the best-value complete setup because it includes full inventory management, CRM, invoicing and Stripe payments with no card reader hardware required.
What is the most affordable POS terminal for startups?
The most affordable POS terminal for UK startups is no terminal at all: use a smartphone or tablet with a cloud-based POS like Aphelios. Accept payments via QR codes or payment links with no hardware cost.
Are there hidden fees with free POS plans?
Sometimes. Watch for chargeback fees, refund fees kept by the provider, payout delays of up to 7 days, and core features paywalled behind upgrades. Aphelios includes the full platform on every plan with Stripe's published transaction rates — always read the fee schedule before committing anywhere.
Can I switch POS provider later without penalty?
With month-to-month providers (Aphelios, SumUp, Zettle, Square) yes: export products as CSV, import into the new system, and cancel — no exit fees. Avoid 12-month contracts until you are certain the system fits.
Is a free POS system really free, or is there a catch?
£0/month tiers exist (SumUp, Zettle, Square) but all require paid card readers and exclude full inventory and CRM. Aphelios offers a 14-day free trial with no card required, then Starter at £29.99/month. The unavoidable cost anywhere is the card transaction fee (around 1.5–1.75% in the UK), which goes to the payment processor, not the till maker. Check reader costs, paywalled features and contracts.
Start Your Free Trial Today
14 days, no card required, no hardware to buy. Accept payments and manage your business with Aphelios. Join UK market traders, cafés and high-street shops running their whole operation — till, stock, suppliers and customers — from one account starting at £29.99/month after trial.
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