Enter your transaction amounts, daily balance, and applicable bank policies into the calculator to determine your overdraft fees.

Overdraft Fee Calculator

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Overdraft Fee Formula

The following equation is used to calculate the Overdraft Fee.

OF = (T * PF) + (D * DR)
  • Where OF is the Overdraft Fee ($)
  • #T is the number of overdrawn transactions
  • PF is the per transaction fee ($)
  • #D is the days overdrawn
  • DR is the daily overdraft rate ($/day)

To calculate the overdraft fee, multiply the number of overdrawn transactions by the per-transaction fee, then add the product of the number of days overdrawn and the daily overdraft rate.

What is an Overdraft Fee?

Definition:

Overdraft fees are charges imposed by a financial institution when a bank account's balance falls below zero, covering the costs of processing transactions for which there are insufficient funds in the account.

How to Calculate Overdraft Fee?

Example Problem:

The following example outlines the steps and information needed to calculate the Overdraft Fee.

First, determine the number of overdrawn transactions. In this example, there were 3 transactions that overdrew the account.

Next, determine the per-transaction fee. In this example, the fee is $35 per transaction.

Then, determine the number of days the account was overdrawn. In this case, it was 2 days, with a daily overdraft rate of $5.

Finally, calculate the overdraft fees using the formula above:

OF = (#T * PF) + (#D * DR)

OF = (3 x $35) + (2 x $5)

OF = $105 + $10 = $115 total overdraft fees

FAQ

Are overdraft fees always charged per transaction?

Most banks charge a fee for each transaction that overdrafts the account, though exact policies may vary. Some institutions also charge an additional fee for each day the account remains overdrawn.

Can I avoid overdraft fees altogether?

Yes, by monitoring your account balance closely and opting out of overdraft protection (or setting up overdraft protection transfers from a savings account), you can minimize or avoid incurring overdraft fees. Setting up low-balance alerts can also help you keep track of your balance.

What happens if I don’t repay an overdraft right away?

If you do not repay your overdraft promptly, your account may incur additional fees or your bank may close the account. Non-payment can also negatively impact your financial standing with your bank and potentially affect future banking opportunities.