Cheapest POS System: 5 Best Budget Picks

Square is the default answer to cheapest for a reason: the free plan is a genuinely complete POS, checkout, inventory, basic reporting, invoices and a free online store, with cheap entry hardware and no contract. You pay only when you sell, at roughly 2.6% plus 15 cents per in-person card transaction on current US pricing per TimelineDigi’s verified comparison. For a new or low-volume business, that structure is close to unbeatable: zero fixed cost, and the fee scales with revenue you are actually making.

The honest caveats: you are locked to Square’s processing with no ability to shop rates, which is exactly the lever that matters once volume grows, and the features that tempt you as you scale, staff management, loyalty, advanced reporting, sit in paid add-ons and plans. Fit Small Business’s framing is right: Square wins when you need business management, not just payments.

Pick it if you want the most complete free POS and your card volume is modest.

Skip it if your volume is high enough that locked processing rates cost more than software would.

Loyverse’s structural advantage is separation: the POS software is permanently free with no per-transaction fee at the software layer, and card processing is handled by whichever processor you connect, SumUp, Zettle and others, at that provider’s rate. As Business Expert’s analysis notes, that means a business can start on one processor and later switch to a lower-rate acquirer without retraining staff or changing systems. The free core is genuinely capable too: inventory, multi-store management, a built-in loyalty program, and, per TechnologyAdvice’s testing, food-retail features like weighted barcodes and bulk stock tracking that most free systems lack.

The costs to watch: optional add-ons run $5 to $25 a month each, so a fully equipped setup lands around $35 to $55 a month in software per TimelineDigi’s estimate, and you need your own iPad or Android tablet. The processor independence that makes it cheap is also its complexity, two relationships instead of one.

Pick it if you want free software now and the power to chase lower rates later.

Skip it if you want one vendor for everything with zero configuration.

SumUp is the answer when the question is simply how do I take card payments as cheaply as possible. Readers start around $39 to $79, there is no monthly fee and no contract, and US card-present rates run about 2.6% plus 10 cents with a reader, or 2.75% flat using Tap to Pay on a phone with no hardware at all. Fit Small Business pins its sweet spot precisely: seasonal sellers, hobby sellers, pop-up vendors and mobile businesses that need affordable payment acceptance rather than a full POS.

The free tier does not pretend to be more than it is: real inventory control, multiple staff accounts and e-commerce are absent or paid. If you outgrow payments-only, you move to SumUp’s paid tier or to Square or Loyverse. As the cheapest functional entry point to card acceptance, though, nothing here beats it.

Pick it if you are a market stall, pop-up or mobile seller who mainly needs to take cards.

Skip it if you need inventory, staff management or an online store.

Zettle’s differentiator is settlement. Card takings land in your PayPal Business account within minutes rather than next day, so a business that already runs on PayPal, online sales, invoicing, supplier payments, keeps in-person and online money in one reconciliation flow. The POS app is free with inventory included at the free tier, hardware is cheap, and there is no monthly fee or contract, making it a genuine budget option rather than a loss leader.

The honest qualifier comes from Business Expert’s comparison: if you do not use PayPal for anything else, the PayPal-first settlement just adds a transfer step you do not need, and with fewer features than Square at similar rates, it is not the default choice. KORONA’s head-to-head reaches the same split: Zettle for straightforward payments in a PayPal world, Square for the fuller free POS.

Pick it if your business already lives in PayPal and fast access to takings matters.

Skip it if you do not use PayPal, Square gives you more for the same money.

eHopper’s free Essential plan targets a specific operator: the convenience store or quick-service counter that wants a proper till, not a phone app. Its unusual advantage is hardware flexibility, it runs on Windows machines, Android tablets and Poynt terminals, per TimelineDigi’s testing, so a shop can reuse an existing Windows PC as its register instead of buying an iPad. That alone can make it the cheapest total setup for a counter that already owns the hardware.

The trade-offs are the usual free-tier shape: the $0 plan covers essentials with paid tiers unlocking more, processing rates depend on the payment arrangement you choose, and the polish is a step below Square. For its niche, a fixed counter, existing hardware, straightforward needs, it earns its slot.

Pick it if you run a counter and want to reuse hardware you already own.

Skip it if you want the slickest interface or mobile-first selling.