How Square Payment Processing Works and What It Costs
What Square Does and Who Uses It
Square is a payment processor that lets you accept credit cards, debit cards, and digital wallets (like Apple Pay and Google Pay) in person, online, or by invoice. Square handles the transaction behind the scenes—it connects your customer's card to their bank, confirms the money is there, and deposits the funds into your business account. You do not need a separate merchant account or a relationship with a bank; Square provides both.
Square is used by small retailers, service providers, restaurants, nonprofits, and freelancers. If you run a food truck, a salon, a repair shop, or sell goods at a market, Square is built for that scale. Larger businesses with high transaction volume or complex inventory needs often move to other processors, but Square remains the entry point for most people starting out.
Key Takeaways
- Square charges a percentage of each transaction (called an interchange rate) plus a flat fee per swipe, or a flat percentage for online payments, depending on which plan you choose.
- You need a Square account, a compatible device (like a card reader or tablet), and a business bank account where deposits land.
- Deposits typically arrive within one to two business days, though Square can hold funds if it detects unusual activity.
- Square also offers invoicing, point-of-sale software, payroll, and lending, so you can add services as your business grows.
- Disputes and chargebacks are handled by Square, but you are responsible for proving the transaction was legitimate if a customer contests it.
How Square's Pricing Works
Square charges you in two ways: a percentage of the transaction amount, and sometimes a flat per-transaction fee. The exact rate depends on how you accept the payment.
For in-person payments using a card reader, Square charges 2.6% plus 10 cents per transaction. For online payments (like a link you send a customer), it is 2.9% plus 30 cents. For invoices, the rate is the same as online. If a customer pays by phone, you enter the card manually, and that costs 3.5% plus 15 cents because it is riskier (the card is not physically present).
There is no monthly fee, no setup fee, and no fee to create an account. You pay only when money changes hands. If you do not process any payments in a month, you owe Square nothing.
Refunds work in reverse: if you refund a customer, Square returns the fee you paid on that transaction. So if you charged $100 and paid $2.70 in fees, and then refund the $100, you get the $2.70 back.
What You Need to get your free guide
To accept payments with Square, you need a Square account, which you create online with your name, email, and business details. Square will ask for your Social Security Number or Employer Identification Number (EIN) and may verify your identity by checking your credit.
Next, you need a compatible device. For in-person payments, that is usually a Square Reader (a small card reader that plugs into your phone or tablet via headphone jack or Bluetooth) or a Square Stand (a full point-of-sale terminal). For online payments, you do not need hardware—you send a payment link through email or text, and the customer pays in their browser.
Finally, you need a business bank account where Square deposits your money. Square will ask for your routing number and account number. Deposits land there one to two business days after the transaction, though Square may hold funds for up to seven days if it flags the activity as high-risk (for example, a sudden spike in volume or a refund rate that seems unusual).
How Deposits and Holds Work
When a customer pays you with Square, the money does not land in your bank account immediately. Square first confirms the payment went through, then batches it with other transactions, and then sends it to your bank. This usually takes one to two business days.
If Square suspects fraud or unusual activity, it may place a hold on your funds. A hold means Square is keeping the money in a temporary account while it investigates. Holds typically last three to seven days, but can last longer if Square needs more information from you. You can contact Square support to ask why a hold was placed and what you can do to release it.
Square may also place a hold if you are new and have not processed many transactions yet, or if your transaction pattern changes suddenly (for example, you normally process $500 a day and suddenly process $5,000). These holds are Square's way of protecting itself and you from fraud.
Disputes, Chargebacks, and Your Responsibility
A chargeback happens when a customer tells their bank that a charge was fraudulent or that they never received what they paid for. The bank reverses the transaction and takes the money back from Square, and Square takes it back from you. You lose both the payment and the product or service you provided.
When a chargeback is filed, Square notifies you and gives you a window (usually 7 to 10 days) to respond with evidence that the transaction was legitimate. Evidence might include a signed receipt, a shipping confirmation, an email exchange with the customer, or a photo of the product delivered. If you provide strong evidence, the bank may rule in your favor and return the money. If you do not respond or your evidence is weak, you lose the dispute.
Square charges you a chargeback fee (usually $15) even if you win the dispute, because Square has to pay the bank to process it. If chargebacks become frequent, Square may freeze your account or close it.
Square's Other Services
Beyond payment processing, Square offers tools that integrate with the same account. Square Invoices lets you send a bill to a customer, and they pay by clicking a link—no card reader needed. Square Online is a website builder with a built-in store. Square Payroll handles employee paychecks and tax withholding. Square Loans offers short-term funding based on your transaction history.
You do not have to use these services, but they are available if you want to expand. Many small business owners start with just the card reader and add invoicing or payroll later as they grow.
When Square Might Not Be the Right Fit
Square works well for most small businesses, but there are situations where another processor might serve you better. If you process very high volume (tens of thousands of dollars per month), you may negotiate lower rates with a dedicated merchant services provider. If you run a nonprofit, you may be able to get reduced rates through a nonprofit payment processor. If you operate in a high-risk industry (like adult entertainment or gambling), Square may decline to work with you, and you will need a specialized processor.
If you need features Square does not offer—like recurring billing for subscriptions, multi-location reporting, or integration with a specific accounting software—you should compare Square to competitors like Stripe, Toast, or Clover before committing.
Frequently Asked Questions
How long does it take to get paid after a customer swipes their card?
The money usually lands in your bank account one to two business days after the transaction. Weekends and holidays do not count as business days, so a payment on Friday might not arrive until Tuesday. Square may hold the funds longer if it detects unusual activity.
What happens if a customer disputes a charge?
Square notifies you and asks you to provide proof the transaction was legitimate (a receipt, shipping confirmation, or email exchange). You have about 7 to 10 days to respond. If your evidence is strong, the bank may rule in your favor. If not, you lose the money and Square charges you a chargeback fee.
Can I use Square if I do not have a business license?
Square does not require a business license to open an account, but you do need a Social Security Number or EIN and a business bank account. Square may ask follow-up questions about what you sell or how you operate, especially if your transaction pattern seems unusual.
What if Square closes my account?
Square can close your account if you violate its terms of service (for example, by processing chargebacks at a very high rate, or by selling prohibited items). If this happens, Square will tell you why and may hold your funds for a set period while it investigates. You can contact Square to appeal, but the decision is usually final.
Do I have to use Square's invoicing and payroll, or can I just use the card reader?
You can use only the card reader and ignore the other services. Square does not require you to bundle anything. Many small business owners use Square for payments and a different tool for invoicing or accounting.