An overdraft means you've spent more money than you have in your account

When you overdraw your checking account, you've written a check, made a debit card purchase, or set up an automatic payment for more money than your current balance. The bank pays it anyway — but now you owe the bank money, not the other way around. Your account balance goes negative, shown as a minus sign or in red on your statement.

This sounds straightforward, but the costs and consequences can add up quickly. Most banks charge a fee each time you overdraw — often $25 to $35 per transaction. If multiple transactions hit your account while it's overdrawn, you can be charged multiple fees in a single day. Some banks also charge a daily fee for each day your account stays negative.

The overdraft itself is not a crime, and it does not automatically damage your credit score. But the fees are real money leaving your account, and if you don't repay the negative balance, the bank can close your account and report you to a checking account registry that other banks check before opening new accounts for you.

Key Takeaways

  • An overdraft happens when a transaction goes through even though your balance is too low, leaving your account negative.
  • Banks typically charge $25 to $35 per overdraft transaction, and some charge additional daily fees while your account stays negative.
  • You can overdraw through checks, debit card purchases, ATM withdrawals, and automatic bill payments — but not all of these are treated the same way.
  • Overdraft protection is an optional service that either transfers money from another account or provides a small loan to cover the shortfall, but it comes with its own fees.
  • Repaying an overdraft as soon as possible stops additional fees from piling up and prevents your bank from closing your account.

How overdrafts actually happen

Overdrafts occur in different ways depending on how you access your money. A debit card purchase at a store, a check you write, an ATM withdrawal, or an automatic bill payment can all trigger an overdraft if your balance is too low when the transaction clears.

The timing matters because your balance is not always what you think it is. You might have $500 in your account this morning, but a check you wrote last week might not clear until today. Meanwhile, you swipe your debit card for groceries, thinking you have $500. When the check clears later, your actual balance drops below zero, and now you're overdrawn — even though you thought you had enough money.

Banks also process transactions in different orders, which can make overdrafts worse. Some banks clear larger transactions first, which can cause more smaller transactions to overdraft and trigger multiple fees. This practice is called "high-to-low ordering," and it's legal, though some banks have stopped doing it.

The fees that come with overdrafting

The overdraft fee is the main cost. Most banks charge between $25 and $35 each time a transaction overdrafts your account. If you overdraft three times in one day — say, three separate debit card purchases — you could be charged three separate fees, totaling $75 to $105, even though you only overspent by $10 or $20.

Some banks also charge a "sustained overdraft fee" or "extended overdraft fee" — usually $5 to $10 per day — for each day your account stays negative. If you don't repay the overdraft for a week, these daily fees add up on top of the transaction fees you've already paid.

A few banks offer overdraft protection, which is optional and must be turned on. This service either automatically transfers money from a linked savings account or credit line to cover the overdraft, or it provides a small loan to cover the shortfall. Overdraft protection stops overdraft fees from the checking account, but the transfer or loan usually comes with its own fee — often $10 to $15 — so you're not avoiding a cost, just choosing a different one.

What happens if you don't repay the overdraft

If you leave your account negative for too long, the bank will eventually close it. The exact timeline varies — some banks close accounts after 30 days of being overdrawn, others wait 60 or 90 days — but they will close it. When they do, they'll send you a final statement showing what you owe, and they may send the debt to a collection agency if you don't pay.

A closed account does not directly hurt your credit score the way a missed credit card payment does. However, the bank will report you to ChexSystems or Early Warning Services, which are checking account registries. Other banks check these registries before opening new accounts, so being listed can make it harder to open a checking account elsewhere for several years.

If the debt goes to a collection agency and you still don't pay, that collection account can appear on your credit report and will hurt your credit score. It can also lead to a lawsuit, wage garnishment, or bank levy — where the collection agency takes money directly from your paycheck or a new bank account you open.

How to avoid overdrafting

The simplest way to avoid overdrafts is to keep a buffer in your account — money you don't spend. Many people keep $100 to $300 as a cushion, depending on how often they use their debit card and how variable their income is. This buffer catches small math errors or timing surprises.

Track your balance regularly. Check your account online or through your bank's app before making large purchases or setting up automatic payments. Remember that your available balance might be lower than your current balance if you have pending transactions.

Set up low-balance alerts if your bank offers them. These are notifications — usually by text or email — that tell you when your balance drops below a number you choose, like $200. An alert gives you time to transfer money in or pause spending before you overdraft.

If you're living paycheck to paycheck and overdrafting regularly, consider whether a different account type might help. Some banks offer second-chance checking accounts designed for people with overdraft history, and some credit unions offer accounts with lower or no overdraft fees. These accounts may have monthly fees or other restrictions, but they can cost less than repeated overdraft charges.

What to do if you've already overdrawn

Repay the overdraft as soon as you can. The faster you do, the fewer additional fees you'll accumulate. If you can repay it within a day or two, you might avoid the sustained overdraft fees that pile up over time.

Contact your bank and ask if they will waive the overdraft fee. Banks sometimes do this as a one-time courtesy, especially if you've been a customer for a while and this is your first overdraft. There's no harm in asking — the worst they can say is no. Be polite and explain what happened.

If you've been charged multiple overdraft fees in a short time, ask the bank to review the order in which they processed your transactions. If they used high-to-low ordering and you believe it caused unnecessary fees, some banks will reverse one or more fees as a courtesy.

Once you've repaid the overdraft, focus on preventing the next one. A single overdraft is a mistake; repeated overdrafts usually mean your income and spending are out of balance, and you may need to make a larger change — like reducing expenses, finding additional income, or switching to a different account type.

Overdraft protection: helpful or a trap?

Overdraft protection sounds like a safety net, but it works differently than many people expect. When you turn on overdraft protection, the bank links your checking account to another account — usually a savings account or a credit line — and automatically transfers money to cover overdrafts.

The benefit is that your transaction goes through and you avoid the overdraft fee. The cost is that you pay a transfer fee (usually $10 to $15) and, if the linked account is a credit line, you start paying interest on the borrowed money. Over time, this can cost more than the overdraft fee would have.

Overdraft protection is most useful if you overdraft rarely and want to avoid the embarrassment of a declined transaction. It's less useful if you overdraft frequently, because you'll pay a transfer fee each time instead of an overdraft fee — and if the linked account is a credit line, you'll also pay interest. In that case, the real solution is addressing why you're overdrafting in the first place.

Frequently Asked Questions

Can a bank refuse to pay an overdraft?

Yes. Banks are not required to pay overdrafts — they choose to. If you don't have overdraft protection and your bank decides not to pay, the transaction will be declined. You won't be charged an overdraft fee, but the payment won't go through, which can cause other problems like a late payment on a bill.

Does overdrafting hurt my credit score?

An overdraft itself does not appear on your credit report and does not directly hurt your credit score. However, if the overdraft goes unpaid and is sent to a collection agency, the collection account will appear on your credit report and will lower your score significantly.

How long does an overdraft stay on my record?

An overdraft reported to ChexSystems or Early Warning Services typically stays on your record for five to seven years. This affects your ability to open new checking accounts during that time, but it does not appear on your credit report unless it went to collections.

What's the difference between an overdraft and a declined transaction?

An overdraft is when the bank pays the transaction anyway and charges you a fee. A declined transaction is when the bank refuses to pay because you don't have enough money. Which one happens depends on whether your bank has overdraft protection turned on for your account.

Can I dispute an overdraft fee?

You can ask your bank to reverse or waive the fee, especially if it's your first overdraft or if you believe the bank's transaction ordering caused unnecessary fees. The bank is not required to reverse it, but many will as a one-time courtesy if you ask politely.