Term Deposit
Calculate term-deposit return from principal, rate, and lock-in period.
Gross interest
4 000 Kč
Tax 15%
600 Kč
Net interest
3 400 Kč
Net future value
103 400 Kč
Model: annual compound interest; an indicative 15% withholding tax is applied to interest (simplification).
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Formula
gross FV = P × (1 + r/100)^y; tax ≈ 15% of interest (CZ withholding — simplified); net FV = P + interest × (1 − 0.15)
Example: 100,000 CZK, 4%, 1 year → gross interest 4,000 CZK, tax 600 CZK, net FV 103,400 CZK
Methodology
Return = principal × (1 + r × t) for simple interest, or compounded by capitalization frequency.
Example
100,000 CZK for 1 year at 3.5% → return 3,500 CZK, total 103,500 CZK.