Overdraft Cost Calculator
Updated on 22 Oct 2026 · Checked by Aotob
Being $500 overdrawn for 10 days costs $27.
$0 of interest and $27 of fees.
Overdraft cost
$27
US banks mostly charge a flat fee per overdraft (often $25 to $35), and some charge daily fees. Many big banks have cut or dropped them.
Show the working
Interest = 500 × ((1 + 0%)10/365 − 1) = 0.00
+ fees 27.00 × 1 = 27.00
Cost by days overdrawn
| Days | Interest | With fees |
|---|---|---|
| 1 | 0.00 | 27.00 |
| 7 | 0.00 | 27.00 |
| 14 | 0.00 | 27.00 |
| 30 | 0.00 | 27.00 |
| 60 | 0.00 | 27.00 |
| 90 | 0.00 | 27.00 |
Questions people ask
How are overdrafts charged?
It depends on the country. UK banks charge one yearly rate, often about 40%. US banks mostly charge a flat fee per overdraft. Canada, Australia and New Zealand usually charge interest plus a monthly fee.
Why is the yearly rate so high?
A flat fee on a small, short overdraft is a huge rate when spread over a year: $27 on $100 for a week is over 1,000%.
How do I avoid overdraft fees?
Turn on low-balance alerts, link a savings account, or ask your bank to decline payments rather than overdraw.
Updated 22 Oct 2026Source: Standard maths; typical prices are averages, checked October 2026Checked by AotobTypical rates; check your account terms.Report an issue