How we make this list: we compare pricing pages, product documentation and public user reviews. Rankite is independent; if a vendor ever pays for a featured spot, that listing is clearly labeled Partner.
| Tool | Best for | Starting price | Free plan |
|---|---|---|---|
 Square | New businesses that want a complete POS with no monthly fee | $0 (Free plan); Plus from $29 per month | Yes |
 Toast | Restaurants that want a $0 entry point | $0 (Starter Kit); POS plans from $69 per month | Yes |
 Helcim | Businesses that want transparent interchange-plus pricing with free software | $0 (free POS) | Yes |
 Shopify POS | Retailers selling online and in person | POS Lite included with a Shopify plan; Pro $89 per location per month | Partial (Lite with paid Shopify plan) |
 Clover | Businesses that want hardware choice and flexible plans | From $0 (payments-only plans) | Partial |
 PayPal Zettle | Mobile sellers and businesses already using PayPal | $0 | Yes |
 SumUp | Solo sellers and micro-businesses wanting dead-simple payments | $0 (free plan) | Yes |
 Loyverse | Businesses that want free POS software with their own card processor | $0 (software only) | Yes |
 Stripe Terminal | Developers and platforms building custom in-person payments | $0 (no monthly fee) | Yes |
 GoDaddy POS | Small businesses wanting flat-rate in-person pricing | $0 | Yes |
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
The software can be genuinely free, as with Square, Zettle, SumUp and Helcim. But card processing always costs something, typically 2% to 3% per transaction. "Free POS" means no monthly software fee, not no costs at all.
Square's free plan is the cheapest credible starting point: $0 monthly fee with solid features. If your card volume is high, Helcim's interchange-plus pricing or Loyverse paired with a negotiated processor rate can cost less overall despite similar software fees.
Usually basic inventory is included: product lists, stock counts and low-stock alerts. Advanced features like purchase orders, multi-location transfers and detailed reporting tend to sit on paid tiers. Check the specific plan against your actual inventory complexity.
Yes. Square, Zettle, SumUp and GoDaddy all support tap-to-pay directly on modern phones, no card reader needed. For higher volume or printed receipts, a dedicated reader or terminal is still worth the small investment.
Processing fees are the big one and they are not really hidden, just underestimated. Beyond that, watch for paid add-ons like advanced reporting, loyalty programs, payroll and ecommerce integrations, plus hardware costs and, with some vendors, long-term processing contracts.
Start with the true cost, not the software fee. At $10,000 in monthly card sales, the difference between 2.3% and 2.9% processing is $60 a month, more than most POS subscriptions. Get the processing rate in writing and do the math at your real volume before falling for a $0 sticker.
Next, check what the free plan actually includes. Count your products, staff seats and locations against the plan limits. Test the features you will use daily: ringing up a sale, applying a discount, handling a return. A free plan that covers your whole workflow is a gift; one that gates essentials is a trial with better marketing.
Finally, think about lock-in. Some systems tie you to their processing with no easy exit, and proprietary hardware becomes a paperweight if you leave. Month-to-month terms and hardware that works elsewhere are worth real money in flexibility. The cheapest POS is the one you can leave.
Every business on this list has a paid tier waiting, and there is a predictable moment when free stops working. It usually arrives as one of three pains: the processing rate that was fine at $5,000 a month now costs more than a subscription plus interchange-plus would; the free plan's inventory or reporting cannot answer questions your accountant is asking; or you have added a second location and the free tier does not do multi-location properly.
None of these are emergencies, and none mean you chose wrong. Starting free was still the right call, because you learned what you actually need before paying for it. When the upgrade moment comes, price it the same way you priced the free plan: total monthly cost including processing, at your current volume, against the two or three competitors you shortlisted the first time around.
We focused on POS systems with genuinely free software tiers, identified through small business review sites, 2026 POS comparisons from Fit Small Business, TechnologyAdvice and G2, and payment industry coverage. We verified plan structures against vendor-published comparisons and only listed prices confirmed by the vendors themselves, marking the rest "See website." We weighed what each free plan actually includes, card processing rates, hardware costs, contract flexibility and fit for different business types from market stalls to restaurants. We favored systems a non-technical owner can set up without help.
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Shihab has spent more than a decade helping SaaS and e-commerce brands grow through search. He writes Rankite's software buying guides from pricing pages, documentation and public user reviews. More about Shihab.