Who pays the processing fee on Square is decided by the merchant agreement you accepted, and the default is you, the store. Square takes its share out of each sale before the money reaches your bank, so you never write a check for it and you never see it leave.
Follow one twenty dollar sale to the end
A customer taps for a twenty dollar basket. Your register shows twenty dollars. Your daily sales report shows twenty dollars. Your bank deposit, when it arrives, is less than twenty dollars.
The difference went to the fee, and it was subtracted in transit rather than billed later. That is the whole mechanism, and it is why so many owners genuinely do not know what they pay per year. Nothing ever presents itself as a bill.
Underneath, that deduction is split further. Most of it goes to interchange, which reaches the bank that issued the customer’s card. A slice goes to the card network as an assessment. What is left is the processor’s margin. We break the shares down on our page about what card processing fees actually pay for.
Who pays the processing fee on Square if you would rather the customer did
You can shift some of it, and a lot of corner stores do, but not by simply typing an extra line into the register.
Passing card cost to a cardholder runs into card network merchant rules on disclosure, on which card types can carry a charge, and on how much. Visa and Mastercard publish those rules on their own sites. State law sits on top and it varies, so check your own state’s current position before printing signage. Whether your platform supports a compliant program at all is a separate question to ask Square directly. The two common structures are explained on our cash discount and dual pricing page.
What you cannot do is decide unilaterally at the counter. A program that is not disclosed properly is a chargeback risk and, in some places, a legal one.
Refunds, disputes and tips, where the answer shifts
Refunds. When you refund a sale, the customer gets the full amount back. Whether the original processing cost returns to you depends on the processor’s policy, and policies differ. It is a fair thing to ask about in writing before you sign anything.
Disputes. A chargeback carries its own charge on most platforms, and it lands on the merchant regardless of who was at fault. Card-present retail sees far fewer disputes than online selling, which quietly works in a corner store’s favor.
Tips. If you take tips through the terminal, the fee generally applies to the full amount charged, tip included. For a store that is small money. For anywhere tipping is common it is worth knowing, because the tip is passed on in full while the cost of processing it is not.
The bookkeeping trap this creates
Because the fee is netted out before deposit, your bank statement shows net amounts and your POS shows gross ones. If you book revenue from your bank deposits, you have understated both your sales and your expenses by the same amount all year.
That matters twice. Your gross margin looks better than it is, and you lose a deductible expense you actually paid. Square provides fee reporting so the two sides can be recorded properly, and any bookkeeper will ask for it.
It also makes the annual number visible for the first time. Owners who have never added it up are usually surprised, and that surprise is the point at which shopping the account becomes worth the afternoon. Our processing fee calculator converts a month of it into a single comparable rate.
What this means when you compare processors
Every processor works the same way on this point. The merchant carries the cost by default and it is deducted before funding. So the question is never who pays, it is how much and how clearly.
Our own published rate is 2.50% plus $0.10 on an in-person sale, and 2.90% plus $0.25 keyed or online. Sample pricing applies to new accounts applying directly; pricing is subject to underwriting, MCC and the merchant agreement; rates may differ and are subject to change.
Ask for the fee schedule in writing. Ask what a refund does to the original cost. Ask what a dispute costs and how long you have to respond. Ask when funds arrive, because funding speed is worth real money to a store buying stock weekly. Those four answers tell you more than any rate quoted out loud, and they apply to us as much as to anyone. What we put on the counter is on our convenience store POS page, and you see the fee schedule in writing before you sign anything.
If you want a second read on what is currently coming out of your deposits, send us a recent statement.
Frequently asked questions
Can I add a fee to the customer’s total in Square? Only through a properly configured and disclosed program, and only where card network rules and your own state allow it. Ask Square what its platform supports, then check your state, then look at whether your signage and receipts can carry the disclosure.
Does the customer ever pay the fee without me setting anything up? No. With no program in place the posted price is the price, and the cost comes out of your side of the transaction automatically.
Do I pay a fee on the tax portion of a sale? The fee is calculated on the total amount charged to the card, which includes sales tax. That is standard across processors, not specific to any one of them.
Is the fee taken per sale or per batch? Deductions are generally applied per transaction and reflected in your funding, with reporting available per batch. Read your own fee report rather than inferring it from deposit sizes.
Does a cash sale cost me anything? No processing cost, though cash carries its own costs in counting time, shrinkage and trips to the bank. That trade is exactly what a cash discount program is built around.