POS system for a pizzeria: what the IRS requires and what to buy
No federal law makes a US pizzeria use a POS system or a certified cash register. What the IRS requires is records: every sale, every tip and every expense, kept long enough to back up your tax returns. Your state requires you to collect the right sales tax. A POS is simply the easiest way to do both. For a small pizzeria or truck, a card reader with free software can be enough; a busy dining room with delivery drivers usually needs a restaurant POS.
What the law actually requires
| Your situation | POS required? | What you must be able to show |
|---|---|---|
| Any pizzeria or truck | No | Complete records of gross receipts and expenses |
| You collect sales tax | No | Taxable sales, tax collected, by location and period |
| You have employees who get tips | No | Tip reports from employees and payroll records |
| A large food or beverage establishment under IRS rules | No | An annual Form 8027 report of receipts and tips |
IRS recordkeeping guidance; IRS Form 8027. State sales tax rules vary.
Sales tax is the real reason to get it right
Your register has to apply the correct combined rate (state, county, city and any special district) to the right items, handle tax-exempt sales if your state has them, and treat mandatory service charges the way your state does. Get it wrong and you owe the difference out of your own pocket at audit time. The sales tax guide explains what is taxable.
Tips: the pizzeria-specific trap
Tips on card payments need to reach the right employees, and employees must report their tips to you so you can withhold taxes on them. If you run a large food or beverage establishment under the IRS definition, you also file Form 8027 every year. A POS that tracks tips by employee, including delivery drivers, saves hours at payroll and gives you the trail you need if anyone asks.
What a POS for a pizzeria costs
| Option | Typical cost | Good for |
|---|---|---|
| Card reader with free POS app | $0 a month software; reader hardware; about 2.6% + 15¢ per in-person card payment on Square’s free plan | Trucks, small carryout counters |
| Paid plan of the same app | Monthly fee, slightly lower card rates | Growing counters with a few staff |
| Restaurant POS (terminals, kitchen printers or screens) | Monthly software per terminal, hardware, processing contract | Dining rooms, delivery operations, several stations |
| Legacy cash register | One-time purchase | Cash-heavy counters; weak on reporting and card payments |
Square US pricing as reported in 2026 fee guides; check the provider’s own page before you sign.
Read the processing contract, not just the monthly fee
- The rate per in-person, online and keyed-in card payment.
- Whether hardware is bought, leased or tied to a multi-year contract.
- Early termination fees, and whether you can take your card processing elsewhere.
- How fast payouts reach your bank, and what instant payouts cost.
- Who owns the customer data and whether you can export it.
Pizza trucks: a register that works without signal
Festivals, fairgrounds and parking lots have bad cell coverage. Choose a system with an offline mode that stores card payments and syncs later, know the limits on how long offline payments can wait, and keep a cash float as a backup. Sales tax follows where you sell, so set up locations in the POS if you move between cities with different rates.
Keep the register and online ordering in step
Online orders from your own site and from the apps should land in the same daily report as counter sales, or at least be easy to reconcile with it. App orders where the platform remitted the sales tax have to be separated from the ones where you did, or you will pay twice. See how to take online orders.
Checklist before you buy
- Can it handle half-and-half pizzas, sizes in inches and extra toppings without a workaround?
- Does it print or display tickets in the kitchen, by station?
- Does it track delivery drivers, their tips and their cash?
- Does it calculate your combined sales tax rate correctly?
- Does it work offline?
- Can you export sales, tax and tip reports for your accountant?
FAQ
Does the US require a certified cash register?
No. There is no federal certification for registers. You need accurate records and correct sales tax, however you produce them.
Can I run a pizza truck with just a phone and a card reader?
Yes, as long as you keep complete records of sales, including cash, and collect the right sales tax where you park.
How long do I keep sales records?
At least 3 years for most tax records and 4 years for employment tax records, according to the IRS. Your state may ask for longer for sales tax.