Small fees add up. Almost all of them are avoidable.
The story so far You opened checking at Riverbend Community Credit Union and savings at Peak. Riverbend just mailed your debit card. It's Wednesday: checking has $50, savings has $300, and your next $600 paycheck lands Friday. At the register the clerk asks, "Debit or credit?" And the Riverbend app asks, "Want overdraft coverage?"
A debit card spends straight from checking. Spend more than you have, and the bank may cover it and charge an overdraft fee, about $27.
Banks still collected $5.8 billion in overdraft and bounced-payment fees in 2023. Nearly every one of those fees can be avoided.
Spend from your available balance, set a low-balance alert, keep a cushion, and choose about overdraft coverage on purpose.
Bank product managers set fee rules. CFPB analysts study and regulate them. Fraud analysts catch stolen-card charges.
What you're looking at: a sketch, not data. The tags are 2025's average bank fees: $27 overdraft, $16.82 bounced payment, $4.86 ATM and $5.47 monthly fee.
A debit card spends money you have. Sometimes money you don't.
First, how a debit card pays. Then how an overdraft happens, what it costs, and the settings that stop it. Last, the other fees on the menu and what happens if your card is stolen.
How a debit card pays
A debit card pulls money straight out of checking. A credit card borrows the bank's money, and you pay it back later. Your app shows two numbers. The available balance is what you can spend right now. Your current balance doesn't yet count a pending transaction, a purchase that's approved but hasn't finished going through. A gas pump or hotel may put a hold on your money the same way.
- Debit card
- You tap your Riverbend card for a $5.25 coffee, and checking drops from $50.00 to $44.75.
- Pending transaction
- Last night you filled up for $25.00. It's still pending.
- Available balance
- Your current balance says $69.75, but your available balance is $69.75 − $25.00 = $44.75. Spend from the smaller one.
Overdrafts: when the bank pays anyway
An overdraft happens when a purchase or bill is bigger than your available balance and the bank pays it anyway, so your account drops below $0. For covering it, the bank charges an overdraft fee. If the bank refuses and sends a bill payment back unpaid, it may charge an NSF fee, short for nonsufficient funds, and the company you owed may add a late fee. Since 2010, federal rules say a bank can't charge an overdraft fee on an ATM withdrawal or a one-time debit card purchase unless you opt in. If you don't, the card is simply declined, for free. Checks and automatic bill payments are different: they can still overdraw your account either way.
- Overdraft
- You have $50.00 available and buy a $70.00 textbook. Your balance becomes −$20.00.
- Overdraft fee
- Riverbend charges $27, close to 2025's average of $26.77. That $70 book really cost $70 + $27 = $97.
- NSF fee
- If your $45 phone autopay bounces instead, the average fee is $16.82, plus whatever late fee the phone company adds.
- Opt in
- If you never opted in, the textbook purchase is declined, and you pay $0.
Overdraft and NSF fees collected by U.S. banks with over $1 billion in assets
After many big banks cut or dropped these fees in 2021 and 2022, the total fell 51%. It's still about $17 for every person in the U.S.
What you're looking at: real data from the Consumer Financial Protection Bureau's 2024 report on overdraft and NSF fee revenue, for banks with more than $1 billion in assets.
One bad day
One overdraft often brings more, because every fee pushes you further below $0. The order the bank posts your charges matters too. Some banks used to post the largest charge first, which drains your balance fastest and turns more small purchases into overdrafts. In 2010, a federal judge ordered Wells Fargo to pay $203 million for doing exactly that. Set a starting balance, choose your settings, and watch one day post.
- Overdraft fee
- Start with $50, opted in, posted in time order: the $45 phone bill takes you to −$12.75. It, the gas and the streaming each bring a $27 fee: $81 in fees on $94.74 of spending.
- Opt in
- Opt out and the $20 gas purchase is declined, so fees drop to $54. The two autopays still overdraw.
What you're looking at: a calculator with made-up purchases and typical rules: a $27 fee for each item the bank pays while you're short, and declines with no fee for debit card purchases if you haven't opted in. Many real banks cap fees at 3 to 6 a day or skip fees on very small overdrafts; this one doesn't.
The rest of the fee menu
Overdrafts are the biggest fee, but not the only one. Here's what the average account charged in 2025, and the move that makes each one $0.
What you're looking at: real data, the averages from Bankrate's 2025 Checking Account and ATM Fee Study.
Debit or credit when a card is stolen?
A charge you didn't make is an unauthorized charge. How much of it you could lose, your liability, depends on the card and on how fast you report it. With a credit card, federal law caps it at $50. With a debit card, the cap grows the longer you wait, and while the bank investigates, it's your own checking money that's missing. Pick a card and when you report a lost wallet.
- Unauthorized charge
- Your wallet is stolen, and the thief spends $900 on your card.
- Liability
- On the debit card, report within 2 business days and you owe at most $50. Wait longer and it can be up to $500. On a credit card, it's $50 at most.
What you're looking at: a calculator using the federal limits for a lost or stolen card: the Electronic Fund Transfer Act for debit cards and the Fair Credit Billing Act for credit cards. Card networks and many banks promise $0, but the law is the floor. If you don't report within 60 days of your statement, you can lose everything charged after that.
Five fee shields
Set these up once and most fees never reach you. The strongest is a cushion, money you never plan to spend that keeps you above $0. The second is overdraft protection: linking a savings account at the same bank, so it covers a shortfall instantly.
- Cushion
- Start the day with $100 instead of $50, and all five charges clear, leaving $5.26 with $0 in fees.
- Overdraft protection
- Your savings is at Peak, a different bank. A transfer from another bank takes 1 to 3 business days, so it can't rescue you at the register. A Riverbend savings account linked to checking could, the same instant.
- A low-balance alert
Get a text when checking drops under $100, before it hits $0.
- A cushion
Keep $100 or so in checking that you treat as $0.
- Overdraft protection
Link savings at the same bank to cover a shortfall instantly.
- Choose your opt-in
Opted out, a short card purchase is declined, for $0, not $27.
- Bills after payday
Ask each company to set your due date a day or two after you're paid.
Two minutes. Just listen.
Tap any line to jump to it.
Get through the month fee-free.
Six moments from your first month with the Riverbend card, most of them a few days before payday. In each one, read your app, then choose what you do. There are no do-overs, just like real life. Your goal: finish the month having paid $0.
What you're looking at: a made-up week using real rules: the opt-in rule for debit cards, NSF fees on returned payments, 2025's average ATM fees, and federal limits on stolen-card losses.
The logic, step by step.
Four calculations show what a fee really costs.
Step 1: What you can spend
Start from your current balance and take away everything still pending.
- Wednesday
- $69.75 − $25.00 of pending gas = $44.75 you can really spend.
Step 2: What an overdraft really costs
Add the fee to what you bought.
- Textbook
- $70 + $27 = $97. A $5.25 coffee that overdraws costs $5.25 + $27 = $32.25.
Step 3: The fee as a yearly interest rate
An overdraft is really a short loan from the bank. The Consumer Financial Protection Bureau found in 2014 that most debit card overdrafts were for $24 or less and were paid back within 3 days, with a typical fee of $34. To compare that with a loan, divide the fee by the amount borrowed, then multiply by how many of those 3-day stretches fit in a year.
- 2014, $34 fee
- $34$24 × 3653 = 1.417 × 121.7 = 172.4, which is about 17,000% a year.
- 2025, $27 fee
- $27$24 × 3653 = 1.125 × 121.7 = 136.9, which is about 13,700% a year.
Step 4: A year of fees
Multiply each fee by how often it happens, then by 12 months.
- One overdraft a month
- 12 × $26.77 = $321.24 a year.
- Two outside ATMs a month
- 12 × 2 × $4.86 = $116.64 a year.
Worked example: one bad Wednesday
- Start. $50 in checking, opted in, charges posted in time order.
- Coffee and lunch. $50 − $5.25 − $12.50 = $32.25. Still fine.
- Phone bill. $32.25 − $45.00 = −$12.75. The bank pays it and charges $27: now −$39.75.
- Gas and streaming. Each one overdraws again: $20.00 + $27 and $11.99 + $27. You end at −$125.74.
- Add it up. 3 × $27 = $81 in fees on $94.74 of spending.
- The fix. A $100 cushion means $0 in fees. Opting out alone would decline the gas and save $27. Moving the phone bill to Friday, after payday, would save all $81.
Hummingbirds never run the tank to zero.
A hummingbird's heart can beat more than 1,000 times a minute, and it has to feed every few minutes all day. At night it can't eat. So on cold nights it drops into torpor: its heart slows to as few as 50 beats a minute and its body cools, cutting the energy it burns by as much as 95%. That way it wakes up with fuel left.
What you're looking at: an illustration, not data. A hummingbird feeds by day, then saves energy in torpor at night.
Why this sticks. A hummingbird can't let its fuel hit zero overnight, because there's no one to cover the gap. Your account is gentler, but hitting zero still costs $27 a time. The fix is the same: notice when reserves run low, slow your spending way down, and wait for payday to refill the tank.
The page you'd copy down.
- Debit card: spends straight from checking. Available balance = current balance − pending transactions and holds. Spend from available.
- Overdraft: the bank pays when you're short and your balance goes below $0. Overdraft fee: 2025 average $26.77. NSF fee: a returned payment, average $16.82.
- Opt in: needed since 2010 for overdraft fees on ATM and one-time debit card purchases. Not opted in = declined, no fee. Checks and autopays can still overdraw.
- Largest-first posting creates more overdrafts. Fees stack: one short day can cost $81 or more.
- Overdraft as a loan: APR = feeamount × 365days. CFPB 2014: $34 on $24 for 3 days ≈ 17,000%.
- Unauthorized charge on a credit card: liability at most $50. On a debit card: $50 if reported within 2 business days, up to $500 later, more after 60 days.
- Shields: low-balance alert, cushion, overdraft protection from savings at the same bank, opt out, bill dates after payday. Outside ATM: $4.86 average; use your network or cash back.
Fill in the blanks
Grab a friend or a study group.
Settings scavenger hunt
Open your banking apps side by side. Race to find three things: the overdraft setting, where to set a low-balance alert, and how to lock your card.
Fee schedule face-off
Each of you looks up your bank's fee schedule online. Compare overdraft, NSF and ATM fees. Whose bank would charge the most for one bad day?
Post it in order
One person writes five charges and a starting balance. The others work out the fees with time-order posting, then largest-first. Who finds the biggest gap?
Just you and your money.
These stay on this device. Nobody else sees them.
Exam-style questions.
Written the way a college exam would ask them. Each right answer on the first try is worth 10 xp.
On the job: you're the member service rep
You work at Riverbend. A member, Marcus, 19, is upset: he was charged $108 in overdraft fees in one day. He started the day with $50, is opted in, and his charges were coffee $5.25, lunch $12.50, phone bill $45.00, gas $20.00 and streaming $11.99. His old bank posted them largest first.
Your task: explain how $50 turned into $108 of fees, show what time-order posting would have charged, and give him three settings so it never happens again.
See a model answer
What happened: largest first, the $45 phone bill posted first and left $5. Then gas ($20), lunch ($12.50), streaming ($11.99) and coffee ($5.25) each overdrew the account: 4 × $27 = $108.
Time order instead: coffee and lunch clear ($32.25 left), and only the phone bill, gas and streaming overdraw: 3 × $27 = $81. Riverbend posts in time order.
Three settings: (1) opt out of overdraft coverage, so short card purchases like the gas are declined free; (2) link a Riverbend savings account as overdraft protection and set a low-balance alert at $100; (3) ask the phone company to move his due date to just after payday, which would have avoided every fee that day.
Also: many banks will refund a first overdraft fee if you ask politely. It's worth asking.
From keeping the money you earn to making it grow.
What you're looking at: a map of where this lesson fits in the course. Read it left to right: the lesson that comes before, this lesson in the middle, and the later lessons that build on it.
- Before · Unit 1Open your first account
- You are hereDodge the fees
- Next · Unit 1Move money safely
- Later · Unit 3Make your savings earn more
- Later · Unit 4Use a card without getting burned