What Is a Debit Card? How Does It Work?

Your debit card is probably one of the most-used items in your wallet. From getting gas and groceries to buying school supplies for the kids, your card handles countless transactions daily. But what is a debit card, really? And how does it work? This guide answers those questions, and it covers how to get a debit card, the difference between debit cards and credit cards, and what bank accounts have debit cards.

What is a Debit Card?

A debit card is a payment tool that lets you spend money directly from your bank account. Instead of borrowing funds, you use the money you already have available. And unlike cash, debit cards give you a record of every purchase and are easily replaced if lost or stolen.

Where to use your debit card:

• In stores
• Online
• At ATMs
• Digital wallets on smartphones

Every debit card has its own unique card number. Some people carry just one debit card, while others have multiple for different purposes. The debit card number is different for each, which can be located on the front.

How Does a Debit Card Work?

Debit cards work fast, but a lot happens behind the scenes within just a few seconds. Here is a simple breakdown:

• STEP 1: You purchase something or withdraw cash from an ATM.
• STEP 2: The store (or ATM) sends your card details to your bank.
• STEP 3: The bank checks that you have enough funds available to complete the transaction.
• STEP 4: Your payment is approved, and the money is deducted from your account balance and paid to the merchant (or provided in cash for ATM transactions).

Depending on the situation, you may be asked to provide your PIN or sign your name. Each has its own purpose, which may confuse some people. To understand the difference, read our article: “Should I Use the PIN or Signature on My Debit Card?”

Debit Card vs. Credit Card: What is the Difference?

People often compare debit and credit cards because they look similar. However, they work very differently.

Debit Card

• Spends the money already in your bank account
• No interest charges
• Helpful for managing your budget and everyday transactions

Credit Card

• Borrows money from a lender
• Interest applies if you carry a balance
• Useful for building credit or handling bigger purchases

Most households, including military households, use BOTH. That normally means using debit cards for daily spending and credit cards for rewards, major purchases, and to build credit.

How Do I Get a Debit Card?

You will need a bank account that supports debit cards. Checking accounts are the most common, but some money market accounts also have debit cards.

How the process works:

• STEP 1: Open a bank account.
• STEP 2: Ask for a card during enrollment.
• STEP 3: Receive debit card by mail or add it instantly to your mobile wallet.
• STEP 4: Activate your card online by phone.

If you already have a bank account with a financial institution but need a debit card, you can request one through online banking or visiting a bank near you.

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Frequently Asked Questions Aboud Debit Cards

Can I pay online with a debit card?

Yes! Online shopping works just like in-store purchases. But since you aren’t swiping or tapping your card online, you will need to provide your card number, expiration date, and the CVV code. Just make sure that you are on a trusted and secure website to keep your card information safe (look for “https” in the URL).

Is it possible to overdraft with a debit card?

Yes, it is possible. The outcome depends on your bank’s policies and whether you have opted into overdraft protection. If you try to make a purchase that exceeds your account balance, one of three things typically happens:

• The transaction is declined at no cost to you (most common if you haven’t enrolled in overdraft coverage).
• Your bank pays the merchant and charges you for the overdraft, usually around $25-35 per transaction.
• Overdraft protection kicks in, transferring money from a linked savings account or line of credit to cover the shortfall.

Are there debit cards with rewards?

They are less common, but some debit cards offer perks when linked to a rewards checking account. Some banks have programs that give you cash back on purchases, discounts from retailers, or special services just for their clients.

If you want debit card rewards, it is worth asking your bank about available options. Or, look around for the best debit card with benefits that match your spending.

Can you use a debit card with a money market account?

Yes, depending on the financial institution. Money markets typically have transaction restrictions, so you may be limited in how often you can use your card each month. That being said, money market accounts with debit card access are convenient when you need funds quickly without first transferring money between accounts.

Armed Forces Bank Accounts with Debit Cards

We design our bank accounts to support real families and businesses who need flexible and dependable banking. That’s why multiple bank accounts have debit card capabilities:

• Personal Checking¹ — Find the best checking account for your family. We offer free checking accounts, rewards checking accounts, interest checking accounts, student checking accounts, and military checking accounts for recruits.
• Business Checking² — With several options available, you can make secure and trackable purchases for your business—from veteran-owned small businesses to LLCs to large corporations.
• Money Market³ — Earn high savings account interest rates while maintaining the ability to make debit card transactions.

Every Armed Forces Bank debit card has FDIC insurance coverage, built-in security features, and free ATM access through the MoneyPass Network. Plus, our Visa debit cards are compatible with digital wallet options (e.g., Google Pay, Apple Pay, and Samsung Pay) and P2P platforms like Venmo and PayPal.

To get a debit card, open a bank account online or in person. OR if you already have an account with us, simply request a debit card through our online banking and mobile banking* platforms!

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