How to Choose a POS System in 8 Steps

If you’re figuring out how to choose a POS system, start with the transactions that take the most effort. Ringing up a sale is one thing. Exchanging a discounted item, splitting a restaurant check, or applying an appointment deposit can reveal whether a POS system fits your business.

In this guide, I explain how to choose the right POS system for your business, what to ask vendors, and what to test before committing.

Square is a good place to start your shortlist, with a free POS plan and paid options for more advanced business needs.

Explore Square’s plans.

Step 1: Map how your business sells

Before contacting POS vendors, write a short description of your operation: what you sell, where customers buy, how many people need access, and which tasks create the most work.

A POS system can combine checkout with inventory, customer records, employee tools, and reporting. Your requirements determine which of those functions deserve attention.

Start with these questions:

• Do you sell products, services, food, or a combination?
• Do customers buy in person, online, at events, or through appointments?
• How many locations and checkout stations do you have?
• What are your monthly card sales and transaction count?
• Which problems are you trying to solve?

Use specific answers. For example, “better inventory” is difficult to evaluate. “Receive stock against a purchase order and track sizes separately” gives a vendor something to demonstrate.

These needs also help you compare types of POS systems. A handheld setup may suit a market seller, while a store might need a permanent checkout station with a scanner and printer.

Real-world use case: A salon selling products alongside appointments should test booking, checkout, tipping, and product inventory together. Testing each separately could miss extra work staff must complete between systems.

Step 2: Determine required features from optional extras

I would sort your feature list into three groups: must have now, useful later, and unnecessary. That makes it easier to choose a plan without paying for tools your business is unlikely to use.

Start with everyday tasks: taking payments, issuing refunds, tracking sales, and running reports. Then, get specific about how your business operates.

For retailers, the factors to consider when choosing a retail POS system might include tracking sizes and colors, managing suppliers, creating purchase orders, printing barcode labels, and transferring stock between stores. A café may care more about entering orders quickly, adding modifiers, and sending tickets to the kitchen.

Check what you’re actually paying for

A feature appearing on a vendor’s website doesn’t mean it’s included in your quote. Ask where each must-have feature sits:

• Included: Available on the quoted plan.
• Upgrade required: Only available on a higher subscription.
• Paid add-on: Carries a separate charge.
• Third-party integration: Requires another app, potentially with its own fee.
• Workaround needed: Staff must complete part of the task manually.

Check limits and pricing units, too. Supporting multiple locations doesn’t necessarily mean the tools you need are included at every store.

For example: If you receive inventory in separate shipments, ask the vendor to create a purchase order, receive part of it, and show what’s still outstanding. Simply increasing a stock count won’t tell you whether the system can track an incomplete delivery.

Once you know what you need, use our best POS systems for small businesses guide to build a shortlist. For store-specific options, see our best retail POS systems. Square is the overall pick in both guides, and you can compare Square’s plans to see which features fit your requirements and budget.

Step 3: Compare the full cost of ownership

The monthly subscription is only one part of your POS bill. Ask each provider for an itemized quote based on the same number of locations, checkout stations, and transactions, with all your required features included. That makes it easier to see which option will actually cost less.

Here are some costs you need to consider:

Monthly software fees

Check whether pricing applies per account, location, register, or employee. Confirm whether the advertised monthly price requires annual payment.

Include subscriptions for any required loyalty, scheduling, inventory, ecommerce, or kitchen tools. A low base price offers little savings if several paid extras are necessary.

Payment processing rates

Estimate processing costs using how your customers actually pay. In-person, online, and manually entered payments can carry different rates, so one advertised fee may not reflect your monthly bill. Our guide to how payment processing works explains what happens behind each transaction.

Compare both the percentage rate and the fixed charge per transaction. An extra 10 cents on 1,000 transactions adds $100 a month, which makes the fixed fee especially relevant for businesses with smaller tickets.

If a provider advertises “free” processing, ask who pays the fee and what charges remain. Our guide to free credit card processing explains the arrangements and tradeoffs to review.

Related: Cheapest Credit Card Processing Companies

Hardware and installation fees

Ask for the price of a complete checkout setup. A quoted terminal price may exclude the tablet, printer, scanner, cash drawer, or other accessories you need. Use our POS hardware guide to identify what belongs in your quote.

Then add installation, data migration, and staff training. Confirm who handles setup, what you’re expected to do yourself, and whether additional help costs extra.

Contract length and cancellation costs

Read the software, processing, and hardware terms separately. Canceling your POS subscription may not end a processing agreement or clear the remaining payments on financed equipment.

Before signing, ask about automatic renewals, cancellation deadlines, early termination fees, and equipment returns. Compare your first-year spending with the ongoing monthly cost so a low introductory price doesn’t skew the decision. Our POS system cost guide breaks down the expenses to include.

Example: A cheaper subscription can produce a higher bill

Consider two fictional quotes for a business with one location, $20,000 in monthly card sales, and 1,000 in-person card transactions.

Illustrative calculations assume constant monthly volume and transaction counts. They exclude taxes, add-ons, installation, refunds, disputes, and other fees.

Quote B costs $111 less per month despite its software subscription. Its higher equipment cost reduces the first-year savings to $832.

The figures are hypothetical, but the comparison method works with real quotes. Include the actual amount subject to processing fees and separate transactions by payment channel when necessary.

Step 4: Check payment processing and payout terms

Before buying POS hardware, find out who will process your payments, what you’ll pay, and when the money will reach your bank account. These details affect your daily cash flow and how easily you can change providers later.

Find out whether you can choose your processor

Square combines its POS with its own payment processing, which keeps setup and payment management in one place. However, you cannot connect a separate merchant account to process card payments through Square POS.

KORONA POS takes a different approach by supporting multiple payment processors. If you already have competitive processing rates, that flexibility may be useful, but confirm that your processor and payment terminal are compatible before committing. 

Compare rates for the ways your customers pay

A shop taking payments at the counter will have a different processing bill from one taking phone orders, sending invoices, or selling online.

For example, Square Free currently charges 2.6% + 15 cents for an in-person tap, dip, or swipe, compared with 3.5% + 15 cents for manually entered payments. On a $100 sale, that is $2.75 versus $3.65. A retailer regularly keying in phone orders should account for that difference when estimating costs.

Check when your money becomes available

Payment approval does not mean the money is already available in your business bank account. Check transfer schedules, cutoff times, weekends, and holidays, especially if you rely on recent sales to cover purchases or payroll.

Square offers standard next-business-day transfers at no additional charge. Eligible instant transfers carry a separate fee, currently 1.95% of the transfer amount. Moving $1,000 this way would cost $19.50 on top of the original payment processing fees. Eligibility and transfer limits also apply. 

For a café buying ingredients each morning, regularly paying for faster transfers could become a recurring expense worth including in the budget.

Read the refund and dispute terms

Returns can leave you with costs even after you give the customer their money back. Square, for example, does not return the original processing fee when you refund a payment. That matters more for businesses with frequent returns, such as clothing retailers.

Also ask about dispute fees, how disputed funds are handled, and any circumstances that could delay payouts or require a reserve. Confirm that the provider accepts your business type and the products you sell.

Step 5: Confirm hardware and integration compatibility

Before replacing equipment you already own, ask the POS provider to check each device’s model, operating system, and connection type. A printer that works with your current checkout may not connect to the new system, and an older tablet may no longer support its app. Confirming this upfront helps you budget for what you can keep and what you’ll need to replace.

Match hardware to the checkout

Confirm the supported operating system, connection type, and accessories for every checkout station. Consider where staff will stand, how customers will pay, and whether printed receipts are necessary.

Our POS hardware guide can help identify the equipment worth pricing. If Square is on your shortlist, our Square hardware comparison explains its device options.

Before purchasing, verify compatibility through the provider’s current documentation. Square, for example, provides separate tools for checking mobile devices and supported accessories. 

Check what integrations actually transfer

An integration listing is a starting point. Ask which information moves between systems, in which direction, and how often.

For an accounting connection, investigate sales, taxes, refunds, processing fees, and deposits. For ecommerce, inspect product variants, inventory, pickup orders, and returns.

Also identify who supports the connection and whether it requires another subscription. Our guide to POS integrations explains the main connections businesses may need.

Example: Process a sample sale and refund, then inspect the accounting entries. Confirm whether the integration separates fees and taxes or sends a summary that requires additional bookkeeping.

Step 6: Review reliability, security, and support

Think about what happens when the internet drops during a lunch rush or a payment terminal stops working before closing. Before choosing a POS, find out how staff can keep serving customers and where they can get help.

Find out what works during an outage

Ask vendors to walk you through an outage on the equipment you plan to use. Can staff still enter orders, print kitchen tickets, accept cash, or take card payments? “Offline mode” does not necessarily cover all those tasks.

For offline card payments, check how quickly you must reconnect and what happens if a payment is later declined. Accepting a card offline does not guarantee you’ll receive the money.

Square, for example, excludes Tap to Pay on iPhone and Android from offline payments. If your backup plan is to take payments on a phone, check Square’s offline payment requirements before relying on it.

Example: A café should test whether an order entered during an outage reaches the kitchen. Being able to collect payment is only part of keeping service moving.

Give staff the access they need

Look for individual employee logins and permissions that let you control refunds, discounts, price changes, and access to business reports. Ask whether the system records who performed each action so you can investigate mistakes without relying on shared passwords or staff recollections.

Have the vendor demonstrate a cashier account and a manager account. Then confirm which security settings you must enable, how software updates are installed, and what payment security responsibilities remain with your business.

Example: A cashier may need to apply a standard promotion, while a larger discount requires manager approval. Test that approval process to see whether it protects your margins without holding up checkout.

Match support to your operating hours

Check when live help is available on your quoted plan and how you can reach it. An online help center may answer setup questions, but a failed terminal during service may require someone who can troubleshoot immediately.

Ask about replacement shipping, warranty coverage, and whether another device can serve as a temporary checkout.

Example: If your restaurant closes at midnight, ask who can help when a terminal fails at 10 p.m. Confirm both the immediate workaround and how long a replacement could take.

Step 7: Test two or three finalists using the same checklist

The most useful way to decide how to choose the right POS system is to watch it handle your work. Give each finalist the same sample products, orders, and exceptions.

Start with a normal transaction, then test the situations that require judgment or extra steps.

Adapt the list to your business. An appointment provider should include deposits and rescheduling; a restaurant should include modifiers and checks.

Let someone who will use the system try it. Record where they need help, how many steps a task takes, and whether a workaround is required. Our guide to using a POS system covers common checkout and closing tasks you can include.

Example: Ask each finalist to demonstrate an exchange involving differently priced items. Check the customer’s balance, the refund or additional payment, and the stock quantities afterward.

For phone or tablet selling, our best POS apps guide can help narrow the options. Square is the overall and free mobile POS pick in that comparison.

Step 8: Review the agreement and plan your switch

Once a finalist passes your tests, review the written agreement and decide how you will launch it.

If you are researching how to buy a POS system, treat the software subscription, processing arrangement, and equipment purchase as separate decisions. Confirm what each agreement requires and how you can end it.

Before signing, verify:

• The exact plan, features, devices, and locations included.
• All recurring fees and any promotional price expiration.
• Contract renewal, cancellation, and equipment return terms.
• Hardware ownership and remaining financing obligations.
• Data import and export options.
• Responsibility for migration and training.
• Treatment of existing gift cards and loyalty balances.

Choose a launch date that leaves time to check products, prices, taxes, permissions, and reports. Keep an agreed backup process available while staff learns the system.

Example: A store replacing its POS should confirm whether gift card balances can transfer before signing. If they cannot, it needs a practical way to honor outstanding balances.

After purchasing, follow our POS setup guide for inventory imports, employee accounts, hardware configuration, and training.

POS buying checklist: What to confirm before signing

Use this checklist for your final review. Mark an item complete only after the vendor has demonstrated it or supplied written confirmation.

Frequently asked questions (FAQs)

Bottom line

Learning how to choose a point of sale system starts with your daily operations and budget. Compare the full cost, test the tasks your staff handles regularly, and confirm the purchase terms in writing.

For many small businesses, I recommend Square as a starting point. Its free POS plan, built-in payment processing, and paid upgrades give you room to add tools as your needs grow.