Start with the lock-in question
Ask this before anything else: can I use this POS with a processor of my choosing, or is payment processing bundled and locked?
Many POS systems are payments companies with software attached. The software is priced attractively because the processing margin is where the money is made. That is a legitimate business model, but it means your processing rate is set by whoever you picked for software, and switching processors later means switching your entire point of sale.
A system that is processor-agnostic keeps those two decisions separate, which means you can renegotiate one without disrupting the other. Over five years that flexibility is usually worth more than any feature on the comparison chart.
Match the system to the operation
Quick service and counter retail
Speed of transaction is everything. Fewer taps to complete a sale, fast card acceptance, reliable receipt printing. Complexity you do not use is a cost, not a bonus.
Full service restaurants
Table management, coursing, split checks, tip handling, and server accountability. Tip adjustment before batch close is essential and worth verifying specifically.
Multi-station retail
Inventory sync across registers, purchase orders, and consolidated reporting. Inventory accuracy is usually where these systems earn or lose their keep.
Appointment-based services
Scheduling, deposits, no-show handling, and stored cards on file for repeat clients.
Mobile and field work
A phone-first setup rather than a terminal. Offline capability matters if you work anywhere with poor signal.
Total cost, not sticker price
POS pricing is quoted as a monthly software fee, which is the smallest component for most businesses. The full picture includes hardware, whether purchased or financed; per-terminal or per-station monthly fees that multiply quickly; payment processing, which is usually the largest line by a wide margin; add-on modules for inventory, loyalty, payroll, or reporting; contract length and early termination terms; and support, which is sometimes tiered so that useful support costs extra.
Build the five-year number, including processing at your actual volume. Systems that look expensive on software often cost less overall, and vice versa.
Questions worth asking before you sign
Can I use my own processor, and what happens to my rate if I switch?
The single most important question, and the answer reveals the business model.
What is the contract term and the early termination fee?
Multi-year POS contracts with substantial termination fees are common and are frequently the thing merchants most regret.
Who owns my data, and can I export it?
Customer records, sales history, and inventory. If you cannot export it in a usable format, switching later is far harder than it appears.
What happens when the internet goes down?
Offline mode is the difference between a slow afternoon and a closed one.
What does support actually cover, and when?
Weekend and evening coverage matters enormously in hospitality and retail, and is often where cheaper systems are cheapest.
How are updates handled?
Forced updates during business hours are a real operational problem worth asking about.
Common mistakes
Buying for the business you plan to be rather than the one you are, and paying monthly for capability you never switch on. Choosing on hardware appearance, which is the most visible and least important variable. Accepting bundled processing without ever comparing the rate, which is the expensive one. Underestimating staff training time, particularly in high-turnover categories. And skipping a reference call with a business of similar size and type, which is the cheapest due diligence available and almost nobody does it.
Before you commit
Run a genuine trial with your real menu or inventory rather than a demo dataset. Have the staff who will actually use it every day try it, not just the owner. Call two references in your category. And get the processing rate in writing, separately from the software quote, so you can evaluate the two decisions independently, which is the whole point.
If you already have a POS you are happy with, the useful question is simply whether your processor integrates with it. Confirm that before signing anything, not after.
236.6B
US noncash payments in 2024, over three quarters by card
Source: Federal Reserve Payments Study
Common questions
What is the most important question when choosing a POS system?+
Whether you can use the processor of your choosing, or whether processing is bundled and locked to the software. Many POS systems are payments companies with software attached, so this one answer, more than any feature, decides what card acceptance costs you.
Why does POS processing lock-in matter so much?+
When processing is bundled, your rate is set by whoever you picked for software, and switching processors later means replacing your entire point of sale. A processor-agnostic system keeps the two decisions separate, so you can renegotiate one without disrupting the other.
How do I compare the true cost of POS systems?+
Ignore the monthly software fee, usually the smallest part. Build a five-year number including hardware, per-station fees, add-on modules, contract and termination terms, support, and processing at your real volume. Processing is normally the largest line by a wide margin.
What should I ask a POS vendor before signing?+
Can I use my own processor, and what happens to my rate if I switch? What is the contract term and early termination fee? Who owns my data and can I export it? What happens when the internet goes down? What does support actually cover?
I already have a POS I like. What should I check?+
Simply whether your processor integrates with it, so you can keep the software and still choose your processing. Confirm that before signing anything. Getting the processing rate in writing separately from the software quote lets you judge each decision on its own.
Already have a POS? We'll tell you honestly.
Tell us what you're running and we'll confirm whether we integrate with it before you sign, not after.
More on merchant services and credit card processing, or read the payments glossary.