What happens when you overdraw your account

When you spend more money than you have in your account, your bank can either decline the transaction or allow it to go through and put your account into negative balance. If the bank allows it, you now have an overdraft — you owe the bank money. The bank charges you a fee for this service, usually between $25 and $35 per transaction, though some banks charge per day instead. You must repay the negative balance plus the fee.

Not all banks handle overdrafts the same way. Some automatically decline transactions that would overdraw you. Others enroll you in an overdraft protection program that either transfers money from a linked savings account or allows the negative balance. A few still use an older system where they process transactions in the order that costs you the most in overdraft fees — this is called high-to-low sorting, and it can turn one mistake into multiple fees in a single day.

The key difference is whether overdraft protection is opt-in or opt-out. Most large banks now make you opt in to overdraft coverage on debit card and ATM transactions, meaning they will decline those transactions by default. Checks and ACH transfers often still overdraw automatically at many banks, even if you have not opted in.

Key Takeaways

  • Overdraft fees typically run $25 to $35 per transaction, and multiple transactions in one day can trigger multiple fees.
  • You can usually opt out of overdraft protection entirely, which means transactions will be declined rather than overdrawing your account.
  • Checks and automatic bill payments may overdraw your account even if you have declined overdraft coverage for debit cards.
  • Repaying an overdraft means covering both the negative balance and all fees the bank charged.
  • If you cannot repay quickly, the bank may close your account and report you to ChexSystems, which affects your ability to open accounts elsewhere.

How overdraft fees add up in a single day

A common scenario: you have $50 in your account. You swipe your debit card for $20, then $40, then $30 in three separate transactions throughout the day. If your bank processes these in the order they happened, you overdraw on the third transaction and pay one $30 fee. But if your bank uses high-to-low sorting, it processes the $40 first (overdraft fee), then the $30 (another overdraft fee), then the $20 (no fee, because you are already overdrawn). You end up paying $60 in fees instead of $30.

High-to-low sorting is legal, but many banks have stopped using it because of consumer complaints. Check your bank's transaction order policy in the account agreement or by calling customer service. If your bank still uses this method and you want to avoid it, you can switch banks — this is one of the clearest reasons to do so.

Overdraft fees can also stack if you stay negative for multiple days. Some banks charge a daily overdraft fee (usually $5 to $10 per day) on top of the per-transaction fee. Others charge a single fee per day no matter how many transactions occur. Read your fee schedule carefully, because the difference between these two methods can be hundreds of dollars over a month.

Opting out of overdraft protection

You have the right to decline overdraft coverage. When you do, your bank will decline debit card and ATM transactions that would overdraw you — the transaction simply will not go through, and you will not be charged a fee. This is called opting out of overdraft protection.

To opt out, contact your bank by phone, in person, or through online banking. Most banks have a section in their account settings labeled "Overdraft Protection" or "Overdraft Coverage." You can usually turn it off with one click or one phone call. Some banks require you to opt out in writing, but this is rare. Ask the bank whether opting out applies to all transaction types (debit, ATM, checks, ACH) or only some. If it applies only to debit and ATM, you may still overdraw on checks or automatic payments.

Opting out protects you from fees, but it also means transactions will fail. A declined debit card at a store is embarrassing but costs nothing. A declined automatic bill payment can damage your credit if the payment never reaches the creditor. If you opt out, monitor your balance closely and set up low-balance alerts so you know when you are running short.

Overdraft protection through linked accounts

Some banks offer overdraft protection that transfers money from a linked savings account or money market account when your checking account goes negative. This avoids the overdraft fee entirely — instead, you pay a transfer fee, which is usually $0 to $10, far less than an overdraft fee.

This protection works automatically once you set it up. If you overdraw by $100, the bank transfers $100 from savings to checking, and you pay a small transfer fee. You still owe the money back (you have to repay the savings account), but you avoid the large overdraft fee. The catch is that you need a linked account with enough money in it. If both accounts are low, the transfer will fail and you will overdraw anyway.

Linked account protection is worth setting up if you have a savings account at the same bank and tend to run close to zero. It is not a substitute for budgeting, but it is cheaper than overdraft fees when you slip up.

What happens if you cannot repay an overdraft

If you do not repay the negative balance within a set time — usually 30 to 60 days, depending on the bank — the bank may close your account and send the debt to a collection agency. You will then owe the original overdraft amount plus all fees, and the collection agency will add its own fees on top.

The bank will also report the closed account to ChexSystems, a banking history database. Most banks check ChexSystems before opening a new account for you. If you appear in ChexSystems with an unpaid overdraft, you may be denied a checking account at other banks for several years. Some banks specialize in second-chance accounts for people with ChexSystems records, but these accounts often come with higher fees and lower limits.

If you overdraw and cannot repay, contact your bank immediately. Some banks will negotiate a payment plan or waive some fees if you reach out before the account is closed. Once it goes to collections, your options narrow significantly. Paying the collection agency will stop the calls but will not remove the mark from ChexSystems immediately — it typically stays for five years.

Overdraft versus insufficient funds

These terms are sometimes used interchangeably, but they mean different things. Insufficient funds means you do not have enough money in your account to cover a transaction. Overdraft means the bank allowed the transaction anyway and your account went negative. A transaction can result in insufficient funds without resulting in an overdraft if the bank declines it.

When you receive a notice that says "NSF" (non-sufficient funds), it usually means a check or automatic payment was declined because you did not have enough money. Some banks charge an NSF fee even though the transaction did not go through — this is separate from an overdraft fee. Check your fee schedule to see whether your bank charges NSF fees, and if so, how much.

How to avoid overdrafts

The simplest method is to keep a buffer in your account — money you do not spend, so that small mistakes do not push you negative. Even $100 or $200 can prevent most accidental overdrafts. If you cannot maintain a buffer, set up balance alerts through your bank's app or website. Most banks let you set a threshold (for example, $50) and will send you a text or email when your balance drops below it.

Track your spending in real time. Do not rely on your last known balance — that number does not include pending transactions. Pending transactions are charges that have been authorized but not yet processed, and they can take one to three days to clear. If you spend based on your available balance without accounting for pending charges, you can overdraw even if you thought you had enough money.

If you use multiple payment methods (debit card, checks, automatic payments, online transfers), keep a running total of everything you have committed to spend. Spreadsheets, budgeting apps, and even a notebook work. The goal is to know your true available balance at any moment, not just what the bank shows you right now.

Frequently Asked Questions

Can a bank charge me an overdraft fee if I opted out of overdraft protection?

No. If you opted out of overdraft protection for debit cards and ATM transactions, the bank must decline those transactions instead of charging a fee. However, checks and ACH transfers may still overdraw at some banks even after you opt out, because the rules for those are different. Call your bank to confirm what opting out covers.

How long does an overdraft stay on my record?

If you repay the overdraft, it does not stay on your credit report — overdrafts are not reported to credit bureaus. However, if the bank closes your account and sends it to collections, the collection account appears on your credit report for seven years. ChexSystems records typically stay for five years, though paid accounts may be removed sooner.

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

An overdraft fee is charged when the bank allows your account to go negative. An NSF (non-sufficient funds) fee is charged when the bank declines a transaction because you do not have enough money. Some banks charge both — an NSF fee for the declined transaction, and an overdraft fee if another transaction goes through and overdrafts you on the same day.

Can I get overdraft fees refunded?

Yes, sometimes. If you have a good history with the bank and this is your first overdraft, call and ask the bank to reverse one or two fees as a courtesy. Banks are more likely to do this if you repay the overdraft quickly. If you have multiple overdrafts, the bank is unlikely to refund fees, but it never hurts to ask. Do not expect a refund if you do not contact the bank.

What happens if I write a check and it overdrafts my account?

The bank will either return the check unpaid (marked "NSF") or allow it to clear and overdraft you, depending on your overdraft settings. If the check is returned, the person who received it will be notified, and you may face consequences from them (late fees, damaged relationship). If it clears and overdrafts you, you pay an overdraft fee. Either way, you still owe the money to the person you wrote the check to.