What happens when you spend more than you have
When you try to spend more money than sits in your account, your bank has a choice: refuse the transaction, or let it go through and put your account into negative balance. If your bank allows the transaction, you have overdrawn your account. The negative number is the overdraft — the amount you now owe the bank.
Most banks do not automatically allow overdrafts. Instead, they offer overdraft protection as an optional service you can turn on. Without it enabled, a transaction that would overdraw you straightforward gets declined at the register or ATM. With it enabled, the transaction goes through, your balance goes negative, and you start owing fees.
The bank is essentially giving you a very short-term, very expensive loan. You are borrowing money for a few days or weeks until you deposit funds to bring the account back to zero. During that time, you pay overdraft fees — usually $25 to $35 per transaction that overdrew you, though the amount varies by bank.
Key Takeaways
- Overdraft protection is optional and must be turned on in your account settings or by calling your bank — it does not happen automatically.
- Each transaction that overdrafts your account typically costs $25 to $35 in fees, and multiple transactions in one day can trigger multiple fees.
- The overdraft itself (the negative balance) costs nothing until you repay it, but the fees add up quickly if you stay negative for more than a few days.
- You can turn overdraft protection off at any time, which will cause future transactions to decline instead of overdrawing you.
- Some banks offer overdraft grace periods or waive the first overdraft fee per year, so asking your bank about their specific policies can save you money.
How to turn on overdraft protection
To enable overdraft protection, log into your online banking account and look for account settings, preferences, or protection options. Most banks have a toggle or checkbox labeled "overdraft protection" or "overdraft coverage." Turning it on takes seconds. If you cannot find it online, call your bank's customer service line — they can enable it over the phone in a few minutes.
Some banks ask you to link a savings account or credit card as a backup source of funds. If you do this, the bank will pull money from that account first before charging you an overdraft fee. This is often cheaper than paying the fee, though you should check whether your linked account charges a transfer fee.
Once overdraft protection is on, any transaction that would overdraw you will go through. You will see the negative balance in your account when ready, and the overdraft fee will post within one to three business days.
What overdraft fees actually cost
A single overdraft fee ranges from $25 to $35 at most banks, though some charge more. The fee is charged per transaction, not per day. If you overdraw your account with three separate purchases on the same day, you may be charged three separate fees — one for each transaction.
Banks also set a limit on how many overdraft fees they will charge in a single day. This limit is often four to six fees per day, though it varies. If you make ten transactions that overdraw you in one day, you will not pay ten fees — you will hit the daily cap and pay only the maximum allowed.
The longer you stay negative, the more fees accumulate. If you overdraw on Monday and do not deposit funds until Friday, you could be charged a fee every day or every few days, depending on your bank's policy. A $100 overdraft can easily cost $100 or more in fees before you bring the account back to zero.
When overdraft protection is not automatic
Federal law requires banks to ask your permission before charging overdraft fees on debit card purchases and ATM withdrawals. This means overdraft protection for these transactions is opt-in — you have to turn it on. Without your permission, the bank must decline the transaction instead.
However, overdraft protection for checks and automatic bill payments is often on by default. Banks can charge overdraft fees on these without asking first. If you write a check that overdrafts your account, or if an automatic payment pulls more than you have, you will likely be charged a fee even if you never turned on overdraft protection.
This is why it is worth calling your bank and asking exactly which transactions are covered by overdraft protection and which are not. The rules differ between banks, and knowing your bank's specific policy can help you avoid surprises.
Why you might want to turn overdraft protection off
Overdraft protection is convenient if you occasionally misjudge your balance and need a transaction to go through. But it is expensive if you overdraw frequently. Each fee is a penalty for spending money you do not have, and the penalties add up fast.
If you turn off overdraft protection, transactions that would overdraw you will straightforward be declined. Your debit card will be rejected at the register. Your ATM withdrawal will not go through. This is inconvenient in the moment, but it stops you from accumulating fees and forces you to stay within your actual balance.
Many people find that turning off overdraft protection is the best way to avoid overdraft fees altogether. You cannot overdraw if the bank will not let you. The declined transaction is a signal to check your balance and adjust your spending, rather than a bill you pay later.
How to get overdraft fees refunded
If you have been charged overdraft fees, call your bank and ask whether they will refund them. Many banks will waive one or two fees per year if you ask, especially if you have been a customer for a while or if the overdraft was caused by a bank error. There is no harm in asking — the worst they can say is no.
Some banks have formal policies about fee refunds. Chase, for example, offers one overdraft fee reversal per year if you ask within a certain window. Bank of America waives overdraft fees if you bring your account back to a positive balance within a set number of days. Ask your bank what their policy is.
If the overdraft was caused by a delayed deposit or a bank error on their end, you have a stronger case for a refund. Explain what happened and ask them to review the transaction. If they caused the problem, they are more likely to reverse the fee.
Alternatives to overdraft protection
If you are worried about overdrawing your account, there are other options besides overdraft protection. A savings account buffer is the simplest: keep a small amount of money (even $50 or $100) in your checking account that you never spend. This cushion means you are less likely to accidentally go negative.
A linked savings account for overdraft coverage is another option. Instead of paying a fee, the bank pulls money from your savings account to cover the overdraft. This costs nothing if your savings account does not charge transfer fees, and it keeps you from going negative.
Some banks offer overdraft lines of credit, which work like a small loan attached to your checking account. If you overdraw, the bank lends you the money at a set interest rate rather than charging a flat fee. This is cheaper than overdraft fees if you stay negative for more than a few days, but it is more expensive if you only overdraw occasionally.
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. Overdraft fees are $25 to $35 per transaction, which works out to an annual interest rate of hundreds of percent if you stay negative for a week or two. If you need a short-term loan, a credit card cash advance or a payday loan from a credit union is cheaper, even though those are also expensive.
What happens if I stay overdrawn for a long time?
Your bank will keep charging overdraft fees every few days until you bring your account back to positive. After 30 to 60 days of being overdrawn, many banks will close your account and send the debt to a collection agency. This damages your credit and makes it harder to open a bank account elsewhere.
Does overdrafting hurt my credit score?
An overdraft itself does not show up on your credit report. However, if you stay overdrawn long enough that your bank closes your account and sends the debt to collections, that will damage your credit. Overdraft fees are also a sign that you are spending more than you have, which can lead to credit card debt and other problems that do hurt your score.
Can I overdraft a savings account?
Most savings accounts do not allow overdrafts. If you try to withdraw more than you have, the transaction is straightforward declined. Some banks offer overdraft protection on savings accounts, but it is less common than on checking accounts. Ask your bank whether your savings account can be overdrawn.
What if my bank charged me overdraft fees without my permission?
Call your bank and explain that you did not authorize overdraft protection. If they turned it on without your consent, they should refund the fees. Federal law requires banks to get your permission before charging overdraft fees on debit card and ATM transactions, so if they did not ask, you have a legitimate complaint.