How does FD Calculator work?

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An FD (Fixed Deposit) Calculator is a tool that helps you estimate the maturity amount and the interest earned on a fixed deposit over a specific period. Here's a step-by-step explanation of how it works:

1. Input Details

You need to provide the following details:

  • Principal Amount (P): The initial amount you want to invest.
  • Tenure (T): The duration of the deposit, usually in months or years.
  • Interest Rate (R): The annual interest rate offered by the bank or financial institution.
  • Compounding Frequency: How often the interest is compounded, such as yearly, half-yearly, quarterly, or monthly.

2. Calculation Method

The FD Calculator uses the formula for compound interest to calculate the maturity amount and the interest earned. The formula is:

Maturity Amount=P×(1+Rn)nT\text{Maturity Amount} = P \times \left(1 + \frac{R}{n}ight)^{nT}Maturity Amount=P×(1+nR​)nT

Where:

  • PPP = Principal Amount
  • RRR = Annual Interest Rate (as a decimal, e.g., 5% = 0.05)
  • nnn = Number of times the interest is compounded per year (e.g., 4 for quarterly, 12 for monthly)
  • TTT = Tenure of the deposit in years

3. Output

The calculator provides the following results:

  • Maturity Amount: The total amount you will receive at the end of the tenure, including the principal and the interest earned.
  • Total Interest Earned: The difference between the maturity amount and the principal amount, representing the interest earned over the tenure.

Example

For instance, if you invest $10,000 in an FD for 5 years at an annual interest rate of 5%, compounded quarterly, the calculation would be:

  • Principal (P) = $10,000
  • Tenure (T) = 5 years
  • Annual Interest Rate (R) = 5% or 0.05
  • Compounding Frequency (n) = 4 (quarterly)

Using the formula, you can find the maturity amount and total interest earned.

This calculator helps investors understand the potential returns on their fixed deposits, enabling better financial planning and investment decisions.

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