Bank Deposit Calculator (Compound Interest)
Compute the final amount, interest earned and effective annual rate of a bank deposit with compound interest.
How to Use the Bank Deposit Calculator (Compound Interest)
- Enter the principal.
- Enter the annual nominal rate.
- Enter the term in months.
- Pick how often interest compounds per year.
- Click Calculate to see final amount, interest earned and the effective rate.
使用例
- •Comparing bank deposit offers.
- •Planning savings goals.
- •Teaching compound interest.
計算式
A = P × (1 + r/n)^(n·t), where P = principal, r = annual rate, n = compoundings per year, t = years. Effective rate = (1 + r/n)^n − 1.
よくある質問
Nominal vs effective rate?
The nominal rate ignores compounding. The effective annual rate folds in intra-year compounding, so monthly compounding at 10% nominal yields ≈ 10.47% effective.
What about tax?
Russian deposit interest above a threshold (1 000 000 × key rate) is taxed at 13% (15% above 2.4 M₽). This calculator shows gross interest — subtract tax when comparing net return.
Are these rates current?
Calculator is generic — deposit rates and Russian tax rules valid for 2026 — verify current thresholds with official sources before investing.