How you end up with a negative balance

An overdraft happens when you spend more money than you have in your checking account. The bank lets the transaction go through anyway, putting your balance below zero. You do not have to do anything special to "set up" an overdraft — it occurs automatically when a transaction would otherwise be declined.

The most common way this happens is through a debit card purchase or ATM withdrawal when you have miscalculated your balance. A check you wrote clears for more than you expected. A recurring bill comes out on a day when your paycheck has not yet deposited. You swipe your card thinking you have enough, but a previous transaction you forgot about has not posted yet.

Banks handle overdrafts in different ways depending on the account type and the bank's own policies. Some banks automatically cover the overdraft and charge you a fee. Others decline the transaction and charge a smaller fee (or no fee) for the declined attempt. A few banks do both — they cover some transactions and decline others based on the amount or the type of transaction.

Key Takeaways

  • Overdrafts happen automatically when a transaction would make your balance negative, and the bank decides whether to cover it or decline it based on their own policy.
  • Banks charge overdraft fees (typically $25 to $35 per transaction) when they cover a negative balance, and these fees can stack up if multiple transactions post while you are overdrawn.
  • You can prevent overdrafts by linking a savings account, turning off overdraft coverage, or setting up balance alerts with your bank.
  • If you are overdrawn, contact your bank when ready — some will reverse one or two fees per year if you ask, especially if you have been a customer for a while.

What happens when a transaction goes through while you are negative

When your bank covers an overdraft, your account balance goes negative and you are charged an overdraft fee. This fee is separate from the transaction itself. If you spend $50 and your balance was $0, you now owe the bank $50 plus the overdraft fee — often $25 to $35, though this varies by bank.

The problem compounds quickly. If your account is negative and another transaction posts — a second debit card purchase, an automatic bill payment, a check — your bank may charge another overdraft fee for that transaction too. Some banks charge one fee per day regardless of how many transactions post. Others charge a fee for each transaction. A few cap the total fees you can be charged in a single day, but not all do.

The longer you stay overdrawn, the more fees accumulate. Some banks also charge a daily fee (sometimes called a "negative balance fee" or "extended overdraft fee") if your account stays negative for more than a few days. This is separate from the per-transaction overdraft fee.

How to stop an overdraft before it happens

The simplest way to prevent overdrafts is to turn off overdraft coverage entirely. Contact your bank and ask them to decline transactions instead of covering them. You will still be charged a small fee (usually $1 to $5) for each declined transaction, but this is much cheaper than an overdraft fee. When a transaction is declined, you know when ready that you do not have the money, and you can use a different payment method or wait until funds arrive.

Another option is to link a savings account to your checking account for overdraft protection. If a transaction would overdraw your checking account, the bank automatically transfers money from savings to cover it. You may be charged a small transfer fee (often $0 to $10), but this is cheaper than an overdraft fee and keeps your checking account positive. This only works if you have money in savings to transfer.

Set up balance alerts with your bank so you receive a text or email when your balance drops below a certain amount — often $100 or $200. This gives you time to deposit money or adjust your spending before you accidentally go negative. Most banks offer this for free through their mobile app or online banking portal.

What to do if you are already overdrawn

Deposit money into your account as soon as you can. Your bank will explore the deposit to your negative balance first, bringing you back to zero or positive. Once your balance is positive, any remaining deposit sits in your account normally. The overdraft fees you were charged do not disappear, but stopping the overdraft prevents more fees from piling up.

Call your bank and ask if they will reverse the overdraft fees. Many banks will reverse one or two fees per year, especially if you have been a customer for a while or if this is your first time going negative. They are not required to do this, but it costs nothing to ask. Be polite and honest about what happened. If the bank says no, ask if there is a supervisor or customer service manager who can review your request.

If you are overdrawn because of a mistake on the bank's part — a transaction posted twice, a fee was charged incorrectly, or a deposit did not post when it should have — ask the bank to investigate. Banks can sometimes reverse fees if they find an error on their end.

The difference between overdraft coverage and overdraft protection

Overdraft coverage means the bank covers the transaction and charges you a fee. Your account goes negative, and you owe the bank the overdraft fee plus the amount you overspent. This is what most people mean when they talk about "overdrafting" an account.

Overdraft protection usually refers to a linked savings account or line of credit that automatically covers overdrafts. The bank transfers money from your savings account (or borrows from a credit line) to keep your checking account positive. You pay a transfer fee or interest, but your account does not go negative.

Some banks use these terms differently, so ask your bank directly what their overdraft policy is and what options you have.

Why banks charge overdraft fees

Banks charge overdraft fees because they are taking on risk when they cover a negative balance. They are lending you money (the amount you overspent) without a formal loan agreement, and they are not may provide you will repay it. The fee is their way of covering the cost of that risk and the administrative work of processing the overdraft.

Overdraft fees are also a source of revenue for banks. Some banks rely heavily on overdraft fees, especially from customers who overdraft frequently. This is one reason why some banks make it straightforward to overdraft and charge high fees — they profit from it. Other banks have moved toward lower overdraft fees or no overdraft fees at all as a way to attract customers.

Checking your bank's overdraft policy

Every bank has a different overdraft policy. Some cover overdrafts automatically. Others require you to opt in to overdraft coverage. Some decline transactions instead of covering them. The only way to know your bank's policy is to ask or read your account agreement.

Log into your online banking portal or call your bank's customer service line and ask: "What is your overdraft policy? Do you automatically cover overdrafts, or do I need to opt in? How much do you charge for an overdraft fee? Can I turn off overdraft coverage?" Write down the answers so you have them for reference.

Your account agreement (the document you signed or agreed to when you opened the account) also explains the overdraft policy. You can usually find this online in your bank's website under "account agreements" or "terms and conditions." It will list the overdraft fee amount, when fees are charged, and whether you can opt out of overdraft coverage.

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. An overdraft fee of $30 to $35 for a few days of borrowing is much more costly than a payday loan or a personal loan from a credit union. If you need money quickly, explore other options first — asking family, negotiating a payment plan with a creditor, or visiting a credit union that offers small personal loans.

What happens if I do not pay back the overdraft?

Your bank will keep trying to collect the money. They may freeze your account, report the debt to a collection agency, or sue you for the amount. If you have other accounts at the same bank, they may take money from those accounts to cover the overdraft. This is called "offset" or "right of setoff." If you cannot pay, contact your bank when ready to discuss a payment plan.

Does an overdraft 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, that collection account will appear on your credit report and will damage your score. Paying the overdraft before it reaches collections protects your credit.

Can I overdraft a savings account?

Most banks do not allow overdrafts on savings accounts. Savings accounts are designed to hold money, not to spend from, so banks typically decline transactions that would overdraw savings. However, some banks do allow overdrafts on savings accounts and charge fees the same way they do for checking accounts. Ask your bank about their savings account overdraft policy.

Will my bank let me overdraft if I just opened the account?

It depends on the bank and the account type. Some banks allow overdrafts on new accounts when ready. Others require you to have the account open for a certain period (often 30 to 90 days) before they will cover overdrafts. Ask your bank when overdraft coverage becomes available on your account.