What Square Does and Who Uses It

Square is a payment system that lets you accept card payments on a mobile device — a phone or tablet — instead of requiring a traditional cash register or payment terminal. When a customer swipes, taps, or inserts their card into a small reader attached to your device, Square processes that transaction and deposits the money into your bank account.

Square is used by small business owners, freelancers, food trucks, pop-up shops, and anyone else who needs to take payments away from a fixed location or without expensive equipment. You do not need a physical storefront or a merchant account with a bank — Square handles that part for you.

The system works because Square acts as the middleman between you, the customer's bank, and your bank. When money moves, it follows the same path we described in the main payment guide: the customer's card is charged, their bank verifies the funds, and Square deposits the money into your account after taking a fee.

Key Takeaways

  • Square charges a percentage of each transaction (usually 2.6% plus 10 cents for card payments) plus a monthly fee if you use certain features, so the cost per transaction varies by payment method.
  • You need a Square reader (a small hardware device), the free Square app on your phone or tablet, and a bank account where deposits will land.
  • Money from card payments typically deposits into your bank account within one to two business days, though some deposits take longer depending on your bank.
  • Square keeps a record of every transaction in the app, so you have a built-in sales log and receipt system without buying separate software.
  • If a customer disputes a charge or a card is reported stolen, Square handles the dispute process, though you may lose the money if the dispute is ruled against you.

The Hardware You Need and How It Connects

Square sells a small card reader that plugs into the headphone jack or charging port of your phone or tablet. The most common version is Square Reader for contactless and chip, which accepts tap payments, chip cards, and magnetic stripe cards. You can also use Square Stand, which is a larger device that holds your tablet and includes a built-in reader — this is more common in retail shops or restaurants.

The reader itself costs money upfront (typically $29 to $299 depending on the model), but you only buy it once. The app is free to read from the Apple App Store or Google Play Store. Once you install the app and pair it with your reader using Bluetooth, the two devices communicate wirelessly, so you do not need to plug anything in during each transaction.

You will also need a bank account in your name where Square can deposit your money. Square connects to your bank using the same find method that other payment processors use — you provide your routing number and account number, and Square verifies them by depositing and withdrawing small test amounts (usually under a dollar each).

How Fees Work and What You Pay

Square charges you in two ways: a per-transaction fee and sometimes a monthly subscription. The per-transaction fee depends on how the customer pays. If they use a credit or debit card in person (swiped, tapped, or inserted into the reader), Square charges 2.6% of the transaction plus 10 cents. If they pay online or over the phone using Square's invoicing feature, the fee is 3.6% plus 30 cents.

Some Square features require a monthly subscription on top of the per-transaction fee. For example, Square Plus costs $99 per month and includes advanced reporting, staff management, and the ability to accept payments in multiple currencies. Square Premium costs $299 per month and adds things like advanced inventory management. If you only take occasional payments, you do not need these subscriptions — you pay only the per-transaction fee.

Square does not charge you to read the app, create an account, or own the reader. You pay only when money actually changes hands. This is different from some traditional payment processors, which charge monthly minimums or require you to process a certain dollar amount.

How Money Gets Into Your Bank Account

When a customer completes a payment, Square when ready records it in the app on your device. The transaction is not complete yet — Square still has to send the card information to the customer's bank, verify the funds, and move the money. This usually takes a few seconds, and the app will show you whether the payment went through or was declined.

Once the transaction is approved, Square batches it with other transactions from that day and sends them to the banking system overnight. The next morning, Square requests the money from the customer's bank. Your bank then receives the deposit, and the money lands in your account. This whole process typically takes one to two business days, though some banks are slower and may take three to five days.

You can see the deposit in your bank account as a single line item labeled something like "SQUARE DEPOSITS" rather than individual customer names. If you took $500 in payments on Monday, you will see one $500 deposit (minus Square's fees) on Tuesday or Wednesday. Square also sends you an email receipt showing the breakdown of that day's transactions.

Receipts, Records, and What Happens If Something Goes Wrong

Every time a customer pays, Square creates a digital receipt. You can print it, email it to the customer, or text it to them — the app gives you all three options. The receipt shows the date, time, amount, payment method, and a unique transaction ID. Square stores all of these receipts in the app, so you have a complete sales history without needing separate accounting software.

If a customer later claims they did not authorize a charge or says their card was stolen, they can dispute it with their bank. When a dispute happens, Square notifies you and asks you to provide evidence that the transaction was legitimate — usually a photo of the receipt, a signed order form, or a shipping confirmation. If you can prove the customer authorized the payment, you keep the money. If you cannot, the money is returned to the customer and deducted from your account.

Square also protects you against certain types of fraud. If a card is reported stolen before you process it, Square's system will decline it. However, Square does not protect you against chargebacks caused by customer dissatisfaction or disputes over the quality of goods or services — those are between you and the customer, and you may lose the money even if you have a receipt.

Offline Mode and What Happens When Your Internet Drops

If your internet connection drops, Square can still process payments using a feature called Offline Mode. The reader and app stay connected via Bluetooth, so you can accept a card payment even without WiFi or cellular service. The transaction is stored on your device and automatically sent to Square's servers as soon as your connection returns.

Offline Mode has limits. You can process payments, but you cannot check your account balance, look up past transactions, or use features that require real-time verification. Also, if a card is reported stolen or has insufficient funds, you will not know until your connection comes back and Square processes the transaction — by then, you may have already handed over goods or services.

For this reason, offline payments carry more risk than online ones. If you regularly work in areas with poor internet, you may want to ask customers for payment methods that do not depend on real-time verification, or use a different payment system as a backup.

Square Versus Other Mobile Payment Systems

Square is not the only way to take payments on a phone or tablet. PayPal Here works similarly — it has a reader, a mobile app, and charges per-transaction fees. Stripe Terminal is designed more for businesses that already use Stripe's online payment system. Toast is built for restaurants and includes features like menu management and kitchen display systems.

The main difference between Square and these alternatives is ease of setup and cost structure. Square has the lowest barrier to entry — you can buy a reader and start taking payments in minutes without talking to anyone or signing a contract. PayPal Here charges slightly less per transaction (2.7% for in-person payments) but has higher upfront costs. Stripe and Toast are more powerful but require more technical knowledge and are usually better for businesses that already have a point-of-sale system.

If you are just starting out or need something straightforward, Square is usually the fastest way to begin. If you have specific needs — like restaurant ordering, inventory management, or integration with accounting software — you may find a better fit elsewhere.

Frequently Asked Questions

What happens if a customer's card is declined?

The app will show you when ready that the payment failed and tell you why — usually insufficient funds, expired card, or the card issuer blocked the transaction. You can ask the customer to try a different card or payment method. No money changes hands, and you are not charged a fee for a declined transaction.

Can I use Square if I do not have a business license?

Yes. Square does not require a business license to open an account. You do need a valid Social Security number or tax ID, a bank account in your name, and a phone number. Square will ask you basic questions about what you do and how much you expect to process, but you can use it as a sole proprietor or freelancer.

How long does it take to set up a Square account?

Creating an account in the app takes about five minutes. Connecting your bank account takes a few minutes more. If Square needs to verify your identity or your business, they may ask for documents like a driver's license or a bank statement — this can add a few days. Once everything is verified, you can start taking payments when ready.

What if I lose my phone or the reader breaks?

Your transactions and customer data are stored on Square's servers, not just on your device. If you lose your phone, you can read the app on a new one, log in with your Square account, and all your history is there. If the reader breaks, you can buy a replacement from Square. Your account and money are not affected.

Can customers pay with digital wallets like Apple Pay or Google Pay?

Yes. If your reader supports contactless payments (most modern Square readers do), customers can tap their phone or smartwatch to pay using Apple Pay, Google Pay, or other digital wallets. From your perspective, it works the same way as a card tap — the fee is the same, and the money deposits the same way.