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How much does your overdraft really cost?

Overdraft costs are taken quietly, so most people underestimate them. How to work out yours, why it adds up, and what to do once you see the number.
All articlesBy Balance · · 5 min read

The cost you never see on a bill

An overdraft does not send you an invoice. The interest or fees are simply taken from your account, often as a single line on a statement you may not read. That is what makes it so easy to live with for years, and so easy to underestimate. This guide is general information, not financial advice; for your own situation, talk to your bank or an independent adviser.

Overdrafts are also extremely common. According to Bank of Israel data reported by Ynetnews, about 2.5 million Israelis, 39% of adults, were overdrawn, owing around ₪10.7 billion between them, with banks charging about 11.6% a year, roughly twice the rate of other loans.

In the US the cost is usually a fee per overdraft rather than interest. A 2014 CFPB study found a median fee of $34, most often triggered by debit purchases of $24 or less and repaid within three days, which the CFPB calculated was like a loan at an APR of over 17,000%.

How to calculate the cost of an interest-bearing overdraft

If your bank charges interest on the overdraft, the rough maths is simple:

Yearly cost ≈ average overdraft balance × yearly interest rate

For example, if you are usually about ₪8,000 in the minus at 11.5% a year, that is roughly ₪920 a year, or about ₪77 a month, for the privilege of borrowing money you were going to repay anyway. At ₪20,000 it is about ₪2,300 a year.

Two things make the real number higher than people expect:

  • The balance is not constant. Many people dip deepest just before payday, and interest is usually charged on the daily balance.
  • It lasts. One expensive month becomes a permanent starting point. A cost of ₪77 a month for five years is over ₪4,500.

The overdraft cost calculator does this for your own balance and rate, and shows how quickly you could clear it.

How to find your actual rate and charges

  1. Open last month’s bank statement and look for a line labelled interest, debit interest or overdraft charge.
  2. Check your bank’s current rate for your approved overdraft limit, usually shown in the account details or the bank’s fee schedule. Rates are often prime plus a margin.
  3. Note whether exceeding your approved limit costs more. It usually does.
  4. Add up the last three months. Multiply by four for a yearly figure.

If the number is bigger than you expected, that is normal, and useful. It is the motivation that makes the rest of the plan stick.

What to do once you know the number

Seeing the cost is step one. Getting out is mostly about order:

  • Stop it growing. For one month, aim only to end no deeper than you started. List the bills due before payday and keep everyday spending inside what is left.
  • Spend by the day. Divide what is left for flexible spending by the days to payday. A daily number is far easier to keep than a monthly one. Try the safe-to-spend calculator.
  • Pay it down like a bill. A fixed amount every month, even a small one.
  • Consider a cheaper loan only after spending is under control, otherwise the overdraft quietly fills up again.

Our full guide, how to get out of your overdraft for good, turns these into a 90-day plan.

Overdraft or another way to borrow?

If you cannot clear the overdraft from your income within a few months, compare it with the alternatives. Look at the total cost, not just the monthly payment:

  • A fixed-term personal loan from your bank or another lender often carries a lower rate than the overdraft, and it ends on a known date. The risk: you close the overdraft with the loan, keep spending as before, and end up with both.
  • A credit card instalment plan can look cheap but may carry interest or fees. Read the terms.
  • Borrowing from savings. If you have savings earning far less than the overdraft costs, using part of them can make sense, as long as you keep a small emergency buffer.

A worked example: ₪15,000 in the minus at 11.5% costs about ₪1,725 a year. Paying it down by about ₪1,330 a month clears it in a year, and the interest falls every month as the balance shrinks, so the total interest you pay over that year is roughly half the yearly figure.

Whichever route you choose, the plan only works if the spending that created the overdraft changes too. That is why the order matters: stabilise first, then refinance if it still makes sense.

How to see trouble coming

The hardest part of the overdraft is that you usually find out too late, after the charge has already landed. A forecast fixes that: if you know your balance, your expected bills and your usual daily spending, you can see the low point of the month before it happens.

That is what the cash-flow forecast in Balance does. It projects your balance to the end of the month, including expected bills and paydays, and warns you if your current pace would take you below zero, with the date it would happen. Balance never connects to your bank, so it works from the statements you import, Apple Pay payments logged by a Shortcut and quick notes.

Questions people ask

Not financial advice

This article is general education and does not consider your personal circumstances. For decisions about your own money, consider speaking with a qualified financial professional.

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