Overdraft Calculator
Find out what your overdraft costs: interest for the period, per day and annualised, optional over-limit interest, and a comparison with an instalment loan.
Average per Bundesbank interest rate statistics (08/2026): 9.5%
Average per Bundesbank interest rate statistics (08/2026): 9.0%
Overdraft Cost (30 days)
€15.62
Cost per Day
€0.52
Annualized
€190.00
Comparison with installment loan (9.0% p.a.)
On average an installment loan is cheaper than an overdraft and pays off mainly when the account stays in the red for a long time. Simplified comparison: same amount, same period, no repayment and no compound interest.
Note: These calculations are for informational purposes only and do not replace professional tax or financial advice. All information without guarantee.
FAQ
Frequently Asked Questions
How expensive is an overdraft (Dispo)?
According to Bundesbank interest rate statistics, households paid an average of 9.46% p.a. on overdrafts and revolving loans in August 2026, and some banks charge considerably more; instalment loans cost 8.99% effective on average. Some banks also charge a higher rate for exceeding the agreed overdraft limit.
How can I avoid overdraft charges?
Convert persistent overdrafts to a cheaper installment loan, set up a buffer in a call money account, use spending alerts from your bank, and review regular debits for unnecessary subscriptions.
Are my entered amounts stored anywhere?
No. All calculations happen exclusively in your browser. Your inputs are never sent to our server or stored. You can safely enter sensitive financial data.
Guide
What is the Overdraft Calculator?
The overdraft calculator computes the cost of overdrawing your current account. Overdraft interest is among the most expensive forms of credit.
How does the Overdraft Calculator work?
Enter the overdraft amount, duration and your bank's overdraft rate. The calculator determines the interest incurred. A comparison with an instalment loan shows whether restructuring would be worthwhile.
Key Data and Facts
Average rate for overdrafts and revolving loans to households: 9.46% p.a. (Bundesbank interest rate statistics, August 2026); some banks charge considerably more. A higher rate may apply to a tolerated overdraft beyond the limit (see the bank's price list). Instalment loans cost 8.99% effective on average in August 2026 – if you use the overdraft permanently, consider refinancing.
Step-by-Step Guide
Step 1: Enter the amount by which you overdraw your account (e.g. 2,000 EUR). Step 2: Enter your bank's overdraft interest rate (e.g. 12.5 %; the calculator's default is the Bundesbank average of 9.5 %). Step 3: Enter the duration of the overdraft in days (e.g. 30 days). The calculator works out the interest costs using the formula: amount × interest rate × days / 365. In addition, the calculator compares with an instalment loan whose effective annual rate you enter (default: 9.0 %, Bundesbank average August 2026). Example: 2,000 EUR overdrawn for 30 days at 12.5 % costs approx. 20.55 EUR in interest. With continuous use over 12 months it would be approx. 250 EUR — an instalment loan at 9.0 % would cost approx. 180 EUR.
Calculation Example
For an overdraft of 2,000 EUR, an overdraft rate of 12.5 % and 30 days: 2,000 × 0.125 × 30/365 = 20.55 EUR in interest costs. An instalment loan at 9.0 % for the same amount and period: 2,000 × 0.09 × 30/365 = 14.79 EUR. At the average overdraft rate of 9.5 %, the same month costs 15.62 EUR.
Sources
Official sources
Calculations are based on applicable German laws and official data:
- Deutsche Bundesbank
- Bundesanstalt für Finanzdienstleistungsaufsicht (BaFin)
- Statistisches Bundesamt (Destatis)
Full methodology at Methodology.
Reviewed by Konstantin Iakovlev · Last updated:
Finance
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