Spending more than your balance can cost you a fee, a declined payment or both. A few settings decide which.
In a nutshell
- An overdraft happens when the bank pays a transaction your balance can’t cover; an NSF fee may apply when it declines one.
- Banks need your opt-in before charging overdraft fees on ATM withdrawals and one-time debit card purchases.
- Checks and recurring payments can still be covered, and charged for, without that opt-in.
- Fees vary widely by bank, and many banks have cut or dropped NSF fees.
When a payment is larger than your available balance, your bank has two choices: pay it and overdraw your account, or decline it. Either can come with a fee.
Overdraft vs. NSF
| Overdraft | NSF (non-sufficient funds) | |
|---|---|---|
| What happens | The bank pays the transaction | The bank declines or returns it |
| Your balance | Goes negative | Stays as it was |
| Possible fees | An overdraft fee, sometimes a daily fee while negative | A returned-item fee, plus possible fees from the merchant |
Your opt-in choice
Under federal rules, banks can’t charge overdraft fees on ATM withdrawals and one-time debit card purchases unless you’ve opted in. If you haven’t, those transactions are usually declined instead, at no overdraft charge.
The opt-in doesn’t apply to checks, automatic bill payments or recurring debit card charges. Banks can still pay those into overdraft and charge a fee under the account terms.
Overdraft protection
Many banks offer to move money automatically from a linked savings account, or draw on a line of credit, to cover a shortfall. Transfers are often cheaper than an overdraft fee, and some banks don’t charge for them at all.
Do this
Set a low-balance alert in your banking app. A text when your balance drops below a set amount gives you time to move money before a payment goes through.
Ways to avoid the fees
- Keep a small buffer in checking that you treat as untouchable.
- Line up bill due dates with your paydays.
- Link a savings account for overdraft protection.
- Choose an account with no overdraft fees; many online banks and some large banks offer one.
Be wary
Unpaid overdrafts can lead the bank to close your account and report it to screening companies such as ChexSystems, which can make opening a new account harder. See our guide to ChexSystems.
Choosing an account that fits how you bank
If overdrafts happen often, it may be worth switching to an account built to avoid them, such as one that declines transactions rather than charging fees. Compare that with our guides to monthly maintenance fees and ATM fees to see the full cost of an account.
Good questions
Should I opt in to debit card overdraft coverage?
If you’d rather have a card purchase declined than pay a fee, don’t opt in. If a declined payment would cause bigger problems, opting in may make sense, but know the fee.
Can I get an overdraft fee refunded?
Many banks will consider a one-time refund if you ask, especially if you have a good record. There’s no guarantee.
Is there a federal cap on overdraft fees?
No. A federal rule that would have limited overdraft fees at large banks was overturned by Congress in 2025, so fees depend on each bank’s policy.
This guide is general information, not financial or legal advice. Bank fees, account terms and screening policies vary by bank and change over time, so check the account’s fee schedule and terms before you open it. For federal rules, see the Consumer Financial Protection Bureau and the FDIC.