What Square Payment App does and who uses it
Square is a mobile payment processor that lets you accept credit cards, debit cards, and digital wallets on a smartphone or tablet. You plug a small card reader into your phone's headphone jack or charging port, swipe or insert a card, and the payment goes through. The app handles the transaction, deposits the money into your bank account, and keeps a record of every sale.
Homeowners and small business owners use Square to collect payments from customers without a traditional point-of-sale system. A contractor might use it to take payment on a job site. A handyman uses it instead of asking for a check. A small retail seller at a farmers market or craft fair can process cards the same way a store does. You pay a fee per transaction — typically 2.6% plus 30 cents for card-present transactions — rather than a monthly subscription.
Square also offers invoicing, inventory tracking, and payroll through the same app, though those features cost extra or have their own fees. For this guide, we focus on the core payment processing that most homeowners and small operators actually use.
Key Takeaways
- Square charges 2.6% plus 30 cents per card-present transaction, with no monthly fee or contract, so you only pay when you actually process a payment.
- You need a compatible smartphone or tablet, a Square card reader (which Square usually sends free), and a business bank account to receive deposits.
- Payments typically deposit to your bank account within one to two business days, though Square can hold funds if a transaction looks unusual.
- Square reports all transactions to the IRS on Form 1099-K if you process more than a certain dollar amount in a year, so keep records for tax time.
- The app works offline for swiped cards, but internet connection is required to complete the transaction once you reconnect.
How to set up Square on your phone
Download the Square app from the Apple App Store or Google Play Store. Create an account with your email, phone number, and a password. Square will ask for your legal name, date of birth, and the last four digits of your Social Security number — this is standard identity verification that payment processors require.
Next, add your business bank account. Square needs the routing number and account number so it knows where to send your deposits. You'll also choose how often you want deposits: daily, weekly, or twice weekly. Most people choose daily or weekly so money doesn't sit in Square's account for long.
Order a card reader if you don't already have one. Square sends the reader free to most new users, though shipping takes a few days. Once it arrives, plug it into your phone's charging port (newer readers use USB-C or Lightning connectors depending on your phone). The app will recognize it automatically. You're ready to process payments.
What fees you'll actually pay
Square's standard rate for in-person card payments is 2.6% of the transaction amount plus 30 cents. If a customer pays $100 with a card, you pay $2.90 in fees and receive $97.10. There is no monthly fee, no contract, and no charge for the card reader or the app itself.
Online payments and invoices sent through Square have a different rate: 2.9% plus 30 cents. Keyed-in transactions (when you manually type a card number instead of swiping) cost 3.5% plus 15 cents. These higher rates exist because the payment processor takes on more risk when they can't see the physical card.
If you use Square's other features — invoicing, inventory, payroll — those have separate costs. Invoicing is free to send, but Square takes a small fee if the customer pays the invoice through the app. Payroll costs per employee per pay period. Read the pricing page on Square's website before you turn on features you don't plan to use.
How money gets to your bank account
When a customer's card is approved, Square holds the funds temporarily while it processes the transaction with the customer's bank. This usually takes seconds. Once approved, the money enters Square's account, and Square deposits it into your linked bank account on a schedule you chose during setup.
Most deposits arrive within one to two business days. If you chose daily deposits, the money from today's transactions typically arrives tomorrow. Weekends and bank holidays can delay deposits by a day. Some transactions take longer — if a customer disputes a charge or if Square's fraud detection flags the transaction as unusual, Square may hold the funds for investigation, which can take several days or weeks.
Square also holds back a small reserve from your deposits if you're new to the service or if your transaction history shows unusual patterns. This reserve protects Square against chargebacks and fraud. The reserve is released after you've been with Square for a set period and your account looks stable.
Tax reporting and record-keeping
Square reports your payment volume to the IRS on Form 1099-K. The threshold changed in recent years — currently, Square reports if you process more than $5,000 in a calendar year, though this threshold may change again. You'll receive the 1099-K by January 31 of the following year.
The 1099-K reports gross payment volume, not your profit. If you processed $50,000 in payments but paid $10,000 in fees and $20,000 in inventory costs, the IRS sees the $50,000 number first. You're responsible for reporting your actual profit on your tax return. Keep records of all expenses — inventory, supplies, labor — so you can deduct them and show your real income.
Square's app includes a dashboard that shows all transactions, fees, and deposits. Export this data regularly and keep it with your tax records. If the IRS ever questions your 1099-K, you'll have the detail to back up your numbers.
Security and dispute handling
Square encrypts card data and doesn't store full card numbers on your phone. When a customer swipes or inserts their card, the reader reads the data, encrypts it, and sends it to Square's servers. Your phone never sees the raw card number. This meets industry security standards and protects both you and your customers.
If a customer disputes a charge — claiming they didn't authorize it or that they were charged twice — Square investigates and either refunds the customer or sides with you based on the evidence. You can upload photos, receipts, or communication with the customer to support your case. Disputes can take 30 to 90 days to resolve. If you lose a dispute, Square deducts the refund from your account.
To reduce disputes, send a receipt to every customer and keep your own records. If a customer pays in person, show them the amount before they tap or insert their card. If you're invoicing, include clear descriptions of what they're paying for.
When Square doesn't work and what to do
Square requires an internet connection to complete most transactions. If your phone loses connection after you swipe a card, the app will queue the transaction and send it once you reconnect. For swiped cards specifically, Square can process offline and sync later, but this only works if you've enabled offline mode in settings. Keyed-in or online transactions will fail without internet.
If the card reader stops working, try restarting your phone and the app. Make sure the reader is fully inserted and clean. If it still doesn't work, contact Square support through the app — they can troubleshoot or send a replacement reader. Most issues resolve within a day or two.
Square's app occasionally has bugs or crashes. If the app freezes during a transaction, force-close it and restart. The transaction may or may not have gone through — check your Square dashboard to see if the payment was recorded. If you're unsure, ask the customer to check their bank or card statement, or process the payment again once the app is stable.
Frequently Asked Questions
Do I need a business license to use Square?
Square doesn't require a business license to sign up, but your state or local government may require one depending on what you're selling. Check with your city or county before you start. If you're operating a legitimate business, having a license also protects you legally and makes tax reporting clearer.
What happens if a customer's card is declined?
The app will show a decline message on your phone. Ask the customer to try a different card, or offer another payment method. Square doesn't charge you a fee for declined transactions — you only pay when the payment goes through. The customer's bank decides whether to decline, not Square.
Can I use Square if I don't have a smartphone?
Square's main app requires a smartphone or tablet. Square also makes a standalone device called Square Terminal that works without a phone, but it costs money and has different fees. For most small operators, the phone app is the cheapest option.
How do I know if a transaction is fraudulent?
Square's system flags suspicious transactions automatically — unusually large amounts, multiple transactions in seconds, or cards reported stolen. If Square flags a transaction, it will notify you and may hold the funds while investigating. You can also report a transaction as fraudulent through the app if a customer tells you they didn't authorize it.
What if I want to stop using Square?
You can delete the app and stop processing payments anytime — there's no contract or cancellation fee. Your existing transactions will still settle normally. If Square owes you a deposit, it will arrive on schedule. You won't owe Square anything for leaving.