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Discounted Interest Calculator

This calculator helps you calculate the discounted interest, which is useful for evaluating investment or loan offers. It adjusts the nominal interest rate by accounting for the time value of money using a specific formula to provide more accurate discounting of future cash flows.

Calculate Discounted Interest for Loans and Investments

Input Fields
i
%
Nominal annual interest rate
If enabled, the result will update automatically when you change any value.

Discounted Interest Formula

Formula
$$A = \frac{i / 4}{(1 + i / 1200)^2 + (1 + i / 1200) + 1}$$

Where:

  • A – discounted interest amount
  • i – nominal interest rate (annual percentage rate, expressed as a decimal)

This formula adjusts the nominal interest by factoring in the time value, providing a more accurate present value for future interest payments.


The Discounted Interest formula is used to assess the present value of future interest payments. It is commonly applied in finance for loan evaluations, investment analysis, and discounted cash flow (DCF) calculations. This method accounts for both compound interest and the time value of money, which allows for more precise pricing of loans and investments.

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