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. You swipe, tap, or insert a card into a Square reader, and the money moves from the customer's bank to your business account. Square handles the behind-the-scenes work: it talks to the customer's bank, confirms the funds exist, and deposits what you earned into your account.
Square is used by small retailers, restaurants, service providers, nonprofits, and freelancers—anyone who needs to take a payment without a traditional merchant account or a bank relationship. You do not need to own a storefront or have been in business for years. You can start accepting payments the same day you sign up.
Square also sells hardware (card readers, tablets, registers) and software (inventory tracking, scheduling, invoicing). This guide focuses on the payment processing part: how the money moves, what you pay, and what happens when something goes wrong.
Key Takeaways
- Square charges a percentage of each transaction (usually 2.6% plus 10 cents for in-person card payments) plus a monthly fee if you use certain features, but there is no upfront cost or monthly minimum.
- Money from card payments deposits into your bank account within one to two business days, though you can pay a fee to get it faster.
- Square holds a small percentage of your deposits as a reserve for the first few months, which you get back once your account is established.
- If a customer disputes a charge or claims fraud, Square investigates and may reverse the payment, leaving you responsible for the refund.
- Square's terms allow them to freeze your account if they suspect fraud or high-risk activity, which can lock your money temporarily.
How Square Charges You: Rates and Fees
Square's main cost is a per-transaction fee. For in-person payments (card swiped or tapped at a reader), you pay 2.6% of the sale plus 10 cents. For online payments or invoices, you pay 2.9% plus 30 cents. These percentages are fixed—they do not change based on the card type or the customer's bank.
If you use Square's point-of-sale system (their cash register software), there is a monthly subscription: $0, $60, or $250 per month depending on which plan you choose. The free plan includes basic sales tracking. The paid plans add features like staff management, advanced reporting, and integration with accounting software. You only pay the subscription if you use the software; if you use a Square reader alone, there is no monthly fee.
Square also charges for some services that are optional: next-day deposits cost $1.50 per deposit, and ACH transfers (moving money to your bank account) cost $1 per transfer. If a customer's card is declined, you are not charged. If you issue a refund, Square refunds your fee as well.
How Money Moves From the Customer to Your Bank
When a customer pays with a card, Square receives the payment information and sends it to the customer's bank for approval. The bank checks whether the account has enough money and whether the card is valid. If approved, the bank sets aside the funds and tells Square yes. Square then holds the money in a holding account.
Square deposits the money into your linked bank account on a schedule: usually within one to two business days. Weekends and holidays do not count as business days, so a payment on Friday may not arrive until Tuesday. You can see pending deposits in your Square dashboard before they hit your bank.
For the first 90 days or so, Square holds back a small percentage of each deposit (usually 5% to 10%) as a reserve. This reserve protects Square if disputes or chargebacks pile up. Once your account is established and you have a clean history, Square releases the reserve back to you in full. You can see your reserve balance in your account settings.
Disputes, Chargebacks, and When Square Reverses a Payment
A chargeback happens when a customer tells their bank "I did not make this purchase" or "I did not receive what I paid for." The bank investigates and may reverse the charge, pulling the money back out of your account. Square charges you a $15 chargeback fee on top of losing the sale amount.
You can dispute a chargeback by providing evidence: a signed receipt, a shipping confirmation, a photo of the delivered item, or a message from the customer acknowledging the purchase. Square gives you about 10 days to submit evidence. If the evidence is strong, the bank may rule in your favor and you keep the money. If not, the chargeback stands and you lose the sale plus the $15 fee.
If you have too many chargebacks (the threshold varies but is usually more than 1% of your monthly sales), Square may flag your account as high-risk. This can lead to higher fees, a larger reserve, or in extreme cases, account closure. Legitimate businesses with occasional chargebacks are not penalized, but patterns of disputes raise red flags.
Account Holds and Freezes
Square reserves the right to freeze your account if they suspect fraud, money laundering, or other illegal activity. A freeze means you cannot process new payments, but your existing money stays in the account. Square will usually tell you why the account is frozen and what information they need to unfreeze it.
Freezes are rare for legitimate small businesses, but they happen most often to businesses that sell high-risk items (gift cards, cryptocurrency, gambling), have sudden spikes in sales volume, or receive many chargebacks. If your account is frozen, you should respond to Square's inquiry as quickly as possible with documentation: business license, tax ID, bank statements, or customer records.
Money in a frozen account is not lost, but it is inaccessible until the freeze is lifted. This can be a serious problem if you rely on daily deposits to pay staff or suppliers. To avoid freezes, keep your sales patterns consistent, respond to customer complaints quickly, and maintain clear records of what you sell and who you sell to.
Square Versus Other Payment Processors
Square is one of many payment processors. Stripe and PayPal charge similar rates (around 2.9% plus 30 cents for online payments) and also deposit money within one to two business days. Toast and Clover are built for restaurants and retail and include more advanced features, but they charge higher monthly fees. Traditional merchant accounts through a bank may have lower per-transaction fees but require a long-term contract and higher monthly minimums.
The choice depends on what you sell, how you sell it, and what features you need. If you take mostly in-person card payments and want simplicity, Square is competitive. If you sell online and want the lowest per-transaction rate, Stripe may be cheaper. If you run a restaurant and need inventory and staff management built in, Toast or Clover might be worth the higher cost.
Setting Up Square and What You Need
To start with Square, you need a business bank account (in your business name or your personal name if you are a sole proprietor), a phone number, and an email address. You create an account on Square's website, link your bank account, and order a card reader if you want to take in-person payments. The reader arrives in a few days.
Square will ask for your Social Security number or EIN (Employer Identification Number), your business address, and sometimes a photo of your ID. This is standard for payment processors and is required by federal law to prevent fraud. Once your account is approved, you can start taking payments immediately.
If you plan to take online payments, you will need a website or a way to send invoices. Square provides invoice templates and a payment link you can email or text to customers. If you want a full online store, you can use Square Online (their website builder) or connect Square to an existing website using a plugin.
Frequently Asked Questions
How long does it take to get money after a customer pays?
Square deposits money within one to two business days. Weekends and holidays do not count. If you pay for next-day deposits ($1.50 per deposit), money arrives the next business day. You can see pending deposits in your Square dashboard before they arrive in your bank account.
What happens if a customer disputes a charge?
The customer's bank investigates. If you can show proof of the sale (receipt, shipping confirmation, delivery photo), you can dispute the chargeback. If you win, you keep the money. If you lose, the money is reversed and you pay a $15 chargeback fee. Too many chargebacks can flag your account as high-risk.
Can Square freeze my account without warning?
Square can freeze your account if they suspect fraud or illegal activity, but they usually notify you and ask for information before doing so. Freezes are rare for legitimate businesses. If your account is frozen, respond quickly with documentation like your business license or bank statements to get it unfrozen.
Is there a monthly fee if I only use a card reader?
No. If you use only the Square card reader and not their point-of-sale software, there is no monthly fee. You pay only the per-transaction fee (2.6% plus 10 cents for in-person payments). Monthly fees apply only if you subscribe to their software plans.
What is the reserve, and when do I get it back?
Square holds back a small percentage of your deposits (usually 5% to 10%) for the first 90 days or so as protection against chargebacks. Once your account is established and you have a clean history, Square releases the full reserve back to you. You can see your reserve balance in your account settings.