An overdraft is when you spend more money than you have in your account, and your bank covers the difference

When your account balance drops below zero, you have overdrawn your account. Your bank can choose to pay the transaction anyway—covering the shortfall with its own money—or decline it. If the bank pays, you now owe them that amount plus an overdraft fee, usually between $25 and $35 per transaction. The debt sits in your account as a negative balance until you deposit enough money to bring it back to zero.

Overdrafts happen in seconds. A debit card swipe, an ATM withdrawal, a check you wrote, an automatic bill payment—any of these can push you below zero if there is not enough money waiting. The bank does not stop the transaction to ask permission. It either pays it and charges you, or declines it and charges you a different fee (called a non-sufficient funds or NSF fee). Either way, you pay.

The key difference between an overdraft and a declined transaction is that an overdraft leaves you in debt to the bank. A declined transaction straightforward does not go through. Some banks offer both options; others only decline. A few offer overdraft protection, which links your checking account to a savings account or credit line so the bank pulls money from there instead of charging you a fee.

Key Takeaways

  • An overdraft occurs when a transaction pushes your account balance below zero and your bank pays it anyway, creating a debt you owe the bank.
  • Overdraft fees typically range from $25 to $35 per transaction, and multiple overdrafts in one day can result in multiple fees.
  • Your bank can decline a transaction instead of overdrafting you, which triggers a non-sufficient funds fee—usually the same amount or slightly less.
  • Overdraft protection links your checking account to savings or a credit line so the bank transfers money instead of charging a fee, though transfers may have their own cost.
  • Negative balances can affect your ability to open new accounts and may be reported to banking databases that other banks check.

How the overdraft actually happens—the timeline

The moment a transaction is submitted to your bank, the system checks your available balance. If you have $50 in your account and you swipe your debit card for $75, the transaction goes through to the merchant's bank. Your bank then has a choice: honor the transaction and put your account at -$25, or decline it.

If your bank honors it, you when ready owe $25 plus the overdraft fee. That fee posts to your account within one to three business days, depending on the bank. So your balance becomes -$60 (the original -$25 plus the $35 fee). If another transaction comes through before you deposit money, you can be charged another overdraft fee for that one too. A single day of spending can result in multiple overdraft fees if several transactions post while your account is negative.

The timing matters because not all transactions post at the same time. A debit card purchase might post within hours. A check might take three to five days. An automatic bill payment might post on a specific date each month. If you have $100 in your account on Monday and three different transactions are pending—one for $60, one for $40, and one for $30—they might post in any order depending on the merchant and the payment system. The order they post determines how many overdraft fees you pay.

Overdraft fees and how they stack up

Most banks charge between $25 and $35 per overdraft transaction. Some charge less; a few charge more. The fee is separate from the amount you overdrawn. If you overdraw by $5, you still pay the full fee. If you overdraw by $500, the fee is the same.

Multiple overdrafts in a single day can each trigger a separate fee. If you make five debit card purchases while your account is negative, you could be charged five overdraft fees—$125 to $175 depending on your bank. Some banks cap the number of overdraft fees per day (often at three or four); others do not. Check your account agreement or call your bank to find out what limit, if any, applies to yours.

The fee is charged whether you overdraw by $1 or $100. This is why small overdrafts are often the most expensive relative to the amount borrowed. Overdrawing by $3 and paying a $35 fee means you are paying roughly 1,100 percent interest on that $3 if you repay it within a week.

What happens if you stay negative

Once your account is overdrawn, you have a debt to the bank. The bank expects you to deposit money to bring the balance back to zero. How long you have depends on your bank's policy, but most banks will close your account if it stays negative for 30 to 60 days without any deposits.

If your account is closed while negative, the bank writes off the debt as a loss and reports it to ChexSystems, a banking database that tracks account closures and fraud. Other banks check ChexSystems when you try to open a new account. A reported closure can make it difficult or impossible to open a checking account elsewhere for up to five years, depending on the bank's policy.

Some banks will pursue collection on the debt, meaning they contact you to demand payment or sell the debt to a collection agency. This can damage your credit score and result in wage garnishment if you do not pay. The amount owed is usually small—$50 to $200—but the consequences are not.

Overdraft protection and alternatives

Overdraft protection is a service that prevents overdrafts by automatically transferring money from another account when your balance would go negative. The linked account is usually a savings account at the same bank, but it can also be a credit line or a line of credit from another institution.

When a transaction would overdraw your checking account, the bank transfers just enough from savings to cover it. You avoid the overdraft fee, but you may pay a transfer fee instead—typically $1 to $3 per transfer, which is far cheaper than an overdraft fee. Some banks offer overdraft protection for free.

The catch is that overdraft protection only works if you have money in the linked account. If both your checking and savings are empty, the protection does not help. Also, some banks charge a fee even if the transfer succeeds, so read the fine print before signing up.

If you do not have overdraft protection, you can ask your bank to decline transactions instead of overdrafting you. This prevents the negative balance but still triggers a non-sufficient funds (NSF) fee, usually $25 to $35—the same as an overdraft fee. The difference is that you do not owe the bank money; the transaction straightforward does not go through. This is a better option if you are spending more than you have, because it stops the spiral of fees on top of overdrafts.

How overdrafts appear on your banking record

Overdrafts do not directly affect your credit score because they are not reported to credit bureaus like Equifax or Experian. However, they do appear in your banking history, which other banks see when you try to open a new account.

Banks check ChexSystems or Early Warning Services, two databases that track overdrafts, bounced checks, and account closures. A single overdraft usually does not disqualify you from opening a new account, but multiple overdrafts or an account closure due to negative balance can. Some banks will not open an account for you if you have overdrafts on record within the past two years.

If your account is closed while overdrawn and the debt is not paid, the closure is reported to ChexSystems and stays on your record for up to five years. This makes it very difficult to open a checking account at most banks during that time. Some banks specialize in second-chance accounts for people with ChexSystems records, but they often charge higher fees and offer fewer features.

Why banks offer overdrafts at all

Banks offer overdraft coverage because it generates fee revenue. A customer who overdrafts regularly pays hundreds of dollars per year in fees. From the bank's perspective, overdraft fees are profitable. From the customer's perspective, they are expensive debt with no interest rate disclosure and no clear repayment terms.

Federal regulators have pushed banks to make overdraft coverage optional rather than automatic. As of 2010, banks must get your permission before charging overdraft fees on debit card and ATM transactions. However, overdraft coverage on checks and automatic bill payments is still automatic at most banks unless you specifically opt out. Read your account agreement to see what your bank covers by default.

Some banks have eliminated overdraft fees entirely and instead charge a flat monthly fee for the account, or they offer overdraft protection as the default. Others have raised the threshold for overdraft fees—for example, only charging a fee if you overdraw by more than $5 or $10. If your bank's overdraft policy is expensive, switching to a bank with a better policy can save you hundreds of dollars per year.

Frequently Asked Questions

Can I get an overdraft fee reversed?

Yes, many banks will reverse one or two overdraft fees if you ask, especially if you have been a customer for a while and do not have a history of overdrafts. Call your bank and explain the situation. Some banks have a formal process; others handle it case by case. There is no may provide, but asking costs nothing.

What is the difference between an overdraft and a non-sufficient funds fee?

An overdraft fee is charged when the bank pays a transaction even though you do not have enough money, leaving your account negative. A non-sufficient funds (NSF) fee is charged when the bank declines the transaction because you do not have enough money. Both fees are usually the same amount, but with an overdraft you owe the bank money; with an NSF fee, the transaction straightforward does not go through.

Does overdraft protection hurt my credit score?

No. Overdraft protection is a service between you and your bank; it is not reported to credit bureaus. Using overdraft protection does not affect your credit score. However, if you overdraw your account and the debt goes unpaid for a long time, the bank may report it to a collection agency, which can damage your credit.

How long does an overdraft stay on my banking record?

Overdrafts stay on ChexSystems for up to five years. A single overdraft may not prevent you from opening a new account, but multiple overdrafts or an account closure due to unpaid overdraft debt can make it difficult to open accounts at most banks during that time.

Can I overdraw my account on purpose to get a short-term loan?

Technically yes, but it is an expensive way to borrow. An overdraft fee of $35 on a $100 overdraft that you repay in a week costs you roughly 260 percent annualized interest. A payday loan or credit card advance would be cheaper. If you need short-term money, those are better options than intentional overdrafts.