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How to Calculate Simple Interest on a Deposit: Formula and Examples
26/08/2026 Savings & Deposits

How to Calculate Simple Interest on a Deposit: Formula and Examples

Simple interest is a model in which interest is calculated only on the original principal. Previously earned interest does not become part of the base for future periods. That is the scope of the current LUKIK Deposit Calculator: simple interest without compounding. This distinction matters because compound-interest calculations follow a different mathematical model. What is simple interest? Let: P = initial principal; R = annual interest rate in percent; T = term in years; I = interest earned; A = final amount. Formula: I = P × R / 100 × T Final amount: A = P + I For a term entered in months:..

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