How overdrafts happen and what your bank does

An overdraft occurs when you spend more money than you have in your account, and your bank covers the difference. You do not need to do anything special to trigger an overdraft — it happens automatically when a transaction would otherwise be rejected. Your debit card swipe, check, or automatic bill payment goes through even though your balance is negative.

What happens next depends on your bank's overdraft policy. Some banks will process the transaction and charge you an overdraft fee, usually between $25 and $35 per transaction. Others will decline the transaction outright and charge a non-sufficient funds (NSF) fee instead. A few banks offer overdraft protection, which links your checking account to a savings account or credit line and transfers money automatically to cover the shortfall.

The key difference between banks is whether they charge you for allowing the overdraft or for refusing it. Neither option is free, but the cost and consequences differ. Some banks also charge a daily fee if your account stays negative for more than a day or two.

Key Takeaways

  • Overdrafts happen automatically when you spend more than your balance, and most banks charge $25 to $35 per overdraft transaction.
  • Your bank decides whether to cover the overdraft and charge you a fee, or decline the transaction and charge an NSF fee instead.
  • Overdraft protection links your checking account to savings or a credit line and transfers money automatically, but you pay interest on borrowed funds.
  • Repeated overdrafts can damage your banking history and make it harder to open accounts at other banks in the future.
  • You can request that your bank decline overdrafts rather than cover them, which prevents fees but may cause payments to fail.

Overdraft fees and how they add up

Each overdraft transaction typically costs $25 to $35, and the fee is charged whether you overdraft by $1 or $100. If you have multiple transactions while your account is negative, you can be charged multiple fees in a single day. A person who overdrafts three times in one day might face $75 to $105 in fees on top of the original shortfall.

Some banks also charge a daily fee if your account remains negative. This fee ranges from $5 to $15 per day and continues until your balance returns to zero. If you stay overdrawn for a week, those daily fees can exceed the original overdraft fee. Banks are required to disclose their overdraft policy in writing, usually in the account agreement or fee schedule you receive when you open the account.

The total cost of an overdraft can grow quickly, especially if you do not notice the negative balance right away. Many people discover they are overdrawn only after receiving a statement or seeing multiple fees posted to their account.

Overdraft protection and linked accounts

Overdraft protection is a service that automatically transfers money from another account (usually savings) or from a credit line to cover a shortfall. When you attempt a transaction that would overdraft, the bank transfers just enough to make the transaction go through. You avoid the overdraft fee, but you may pay interest on the borrowed amount or a transfer fee.

The advantage is that your transactions do not fail and you avoid overdraft fees. The disadvantage is that you are borrowing money, even if the amount is small. If your overdraft protection is linked to a credit line rather than savings, you will pay interest at the credit line's rate, which can be 15% to 25% annually. If it is linked to savings, you may pay a flat transfer fee of $5 to $10, or no fee at all depending on your bank.

Overdraft protection only works if you have funds available in the linked account or available credit on the credit line. If both are empty, the transaction will still be declined and you will still face an NSF fee.

Opting out of overdraft coverage

You have the right to tell your bank to decline overdraft transactions rather than cover them. This means your debit card will be rejected at the register, your check will bounce, or your automatic payment will fail — but you will not be charged an overdraft fee. You will still face an NSF fee from your bank (usually $25 to $35), but you avoid the risk of multiple overdraft fees stacking up in a single day.

To opt out, contact your bank directly by phone, in person, or through your online account settings. Some banks allow you to opt out of overdraft coverage for debit card transactions only, while keeping overdraft coverage for checks and automatic payments. Ask your bank what options they offer. The choice to opt out or opt in can usually be changed at any time.

Opting out is useful if you want to be forced to stop spending when your balance is low, rather than accumulating fees. The downside is that a failed transaction can damage your credit if it is a bill payment, and a bounced check can result in fees from both your bank and the merchant.

What happens if you stay overdrawn

If your account stays negative for more than a few days, your bank may close the account and report you to ChexSystems, a banking history database. ChexSystems records account closures due to negative balances, overdrafts, and fraud. When you try to open a new account at another bank, they check ChexSystems, and a negative record can result in rejection or a requirement to use a second-chance checking account with higher fees.

A closed account due to overdraft does not directly affect your credit score, because banks do not report account closures to credit bureaus. However, if your bank sells the debt to a collection agency, that collection account will appear on your credit report and damage your score. This typically happens only if you owe a large amount and ignore the bank's attempts to collect.

The bank will also send you a notice before closing your account, giving you time to deposit funds and bring the balance positive. If you receive such a notice, depositing money immediately is the fastest way to prevent the closure and the ChexSystems record.

Avoiding overdrafts in the first place

The most effective way to avoid overdraft fees is to track your balance regularly and keep a buffer of money you do not spend. Many people maintain a minimum balance of $100 to $500 that they treat as off-limits, so they never accidentally go negative. You can also set up balance alerts through your bank's app or website, which send you a notification when your balance drops below a threshold you choose.

Timing is another factor. Debit card transactions typically post immediately, but checks and automatic payments can take one to three business days to clear. If you write a check on Friday but do not have the funds until Monday, you may overdraft over the weekend. Keeping track of pending transactions, not just your current balance, helps prevent this.

Some banks offer free overdraft protection through a linked savings account, which is worth setting up if you have savings available. This gives you a safety net without the cost of overdraft fees or credit line interest. If you do not have savings, a credit card for emergencies is usually cheaper than repeated overdrafts, since a credit card's interest rate is typically lower than the cost of multiple overdraft fees.

Frequently Asked Questions

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

Technically yes, but it is an expensive way to borrow money. A single overdraft fee of $25 to $35 on a $100 overdraft is equivalent to an annual interest rate of 90% to 130%. If you overdraft repeatedly, the cost becomes even higher. A credit card cash advance, a payday loan, or a personal loan from a credit union are all cheaper options if you need short-term money.

Will an overdraft show up on my credit report?

An overdraft itself does not appear on your credit report, because banks do not report overdrafts to credit bureaus. However, if the overdraft is sent to a collection agency and becomes a debt collection account, that will appear on your credit report and lower your score. This typically happens only if you owe a large amount and ignore the bank's collection efforts.

What is the difference between an overdraft fee and an NSF fee?

An overdraft fee is charged when your bank covers a transaction that would otherwise fail due to insufficient funds. An NSF (non-sufficient funds) fee is charged when your bank declines the transaction because you do not have enough money. The fee amount is usually the same, but the outcome is different: with an overdraft, the transaction goes through; with an NSF, it does not.

Can I get an overdraft fee refunded?

Many banks will refund one or two overdraft fees per year if you ask, especially if you have a good account history and it is your first time requesting a refund. Call your bank's customer service line and explain the situation. There is no may provide, but banks often waive fees as a courtesy to long-term customers. Getting a refund is more likely if you bring your account positive immediately after the overdraft.

Does overdraft protection cost money?

Overdraft protection itself is usually free to set up, but using it may cost money. If it is linked to a savings account, you may pay a small transfer fee or no fee at all. If it is linked to a credit line, you will pay interest on the borrowed amount. The interest rate depends on your credit line's terms, typically 15% to 25% annually. Compare the cost of overdraft protection to the cost of overdraft fees for your bank to see which is cheaper.