Deposit Calculator
Calculate how much a savings deposit will grow to at a given annual interest rate, term, and optional monthly contribution — with monthly compounding.
- Total contributed
- € ( BGN)
- Interest earned (gross)
- € ( BGN)
- Maturity value
- € ( BGN)
⚖️ This calculator is for informational purposes only and isn't financial, accounting or tax advice. Actual terms depend on the specific bank/institution — confirm exact figures with them before making a decision.
How compound interest works
With monthly compounding, each month's interest is added to the principal and itself starts earning interest the following month. Over a longer term the effect is noticeably larger than simple interest, especially with a regular monthly contribution.
Weighing a deposit against paying off a loan early? See theloan calculator for comparison.
Frequently asked questions
How is interest on a deposit calculated?
This calculator assumes monthly compounding — the most common model for Bulgarian bank deposits. Some deposits pay interest only at maturity without compounding, which gives a slightly lower result.
Is there tax on deposit interest?
Yes — interest income on bank deposits held by individuals is taxed at 10% withheld automatically by the bank. This calculator shows the gross interest before that tax.
Why add a monthly contribution?
If you regularly save a fixed amount each month (a savings plan) rather than just a lump sum, the "monthly contribution" field shows the real effect of compounding on your balance over time.