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Overdraft Fee Calculator

Enter the per-item fee, number of items, and extended fee to find the total overdraft cost.

Result

$130.00
$105.00
3

How it is calculated

The tool adds a per-item charge to a single extended fee: item fees = F × N and total = F × N + X. F is the fee your bank charges for each overdrawn transaction, N is how many transactions were covered, and X is any extended (sustained) overdraft fee, entered as one lump sum rather than a daily rate. The extended fee is optional: left blank it counts as 0, so the total equals the item fees. Amounts are shown in US dollars with two decimals and the item count as a whole number. None of the three values can be negative, or no result is shown. The tool does not know your bank's rules, such as daily caps on fees, grace amounts or refunds, so use the fee schedule in your account agreement for F and X.

Worked example

Your bank charges $35 per overdrawn item. Three payments were covered while the balance was negative, and the account then stayed negative long enough to trigger a $25 extended fee. Step 1: item fees = 35 × 3 = $105.00. Step 2: add the extended fee, 105 + 25 = $130.00. The tool shows a total of $130.00, of which $105.00 comes from the 3 items. That is a lot of cost for a small shortfall.

Try this example →

Common mistakes

  • Counting the transactions that were declined: when the bank refuses a payment, an NSF-type fee may apply instead, and it should not be mixed into the number of covered items.
  • Entering the extended fee per day without multiplying by the number of days it was charged. The field takes the total amount.
  • Typing a fraction of an item, such as 2.5. The count must be a whole number of transactions; a fraction gives no result.
  • Ignoring a daily limit on fees in the account terms, which can make the real total lower than F × N.
  • Entering the overdrawn amount instead of the fee, which turns a small charge into an inflated total.

Sources

About this calculator

An overdraft fee is a flat charge a bank applies when a customer’s checking account balance goes negative because a debit, check, or withdrawal exceeds the available funds, and the bank covers the shortfall rather than declining the transaction. Banks typically charge a fixed dollar amount per overdraft event, and some also apply a separate extended or “sustained” overdraft fee if the account remains negative for several consecutive days.

A related but distinct charge, the non-sufficient funds (NSF) fee, applies when the bank declines the transaction outright instead of covering it, still leaving the customer with a fee but no completed payment. Because these fees can compound quickly if multiple transactions post while an account is negative, this calculator estimates the total cost of overdraft activity — number of overdraft events multiplied by the per-event fee, plus any extended fees — helping account holders see the real cost of an overdrawn balance.

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Comments (1)

  • Editorial team

    The total multiplies the fee by the item count with no daily cap, but some banks limit how many fees they charge per day. Check your account terms. As a yardstick, 3 items at 35 is 105, and if that happens every month it adds up to 1,260 a year. The tool follows the US per-item fee model, so it does not suit accounts that charge interest instead. How many covered items do you see in a typical month?

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