Rd Calculator for 15 Years
Recurring Deposits (RDs) are a popular savings instrument in many countries, offering fixed interest rates over a set period. This calculator helps you determine how much you'll have after 15 years of regular monthly deposits with compound interest.
How to Use This Calculator
To calculate your 15-year RD maturity amount:
- Enter your monthly deposit amount in the first field
- Select your annual interest rate (typically 6-8% in many countries)
- Choose whether the interest is compounded monthly or annually
- Click "Calculate" to see your projected maturity amount
The calculator will show you the total amount you'll receive after 15 years, including all interest earned. You'll also see a chart showing how your savings grow over time.
How Recurring Deposits Work
Recurring Deposits are time deposits where you make regular fixed payments (usually monthly) to a bank account. The bank credits these amounts to your account and pays interest on the total balance at regular intervals.
Formula Used
The future value (FV) of a series of recurring deposits is calculated using the formula:
FV = P × [((1 + r/n)^(nt) - 1) / (r/n)] × (1 + r/n)
Where:
- P = monthly deposit amount
- r = annual interest rate (in decimal)
- n = number of times interest is compounded per year
- t = time in years
The key advantages of RDs include:
- Fixed interest rates for the entire term
- Regular interest payouts
- Guaranteed returns
- Tax benefits in some countries
Worked Example
Let's calculate a 15-year RD with these assumptions:
- Monthly deposit: $1,000
- Annual interest rate: 7%
- Compounded monthly
Calculation Steps
1. Convert annual rate to monthly: 7% ÷ 12 = 0.5833% or 0.005833 in decimal
2. Number of payments: 15 years × 12 = 180 months
3. Apply the formula: FV = 1000 × [((1 + 0.005833)^180 - 1) / 0.005833] × (1 + 0.005833)
4. The calculation yields approximately $272,350.72
This example shows how compound interest significantly grows your savings over time. The total interest earned would be $272,350.72 - $180,000 = $92,350.72.