Interest Calculator Savings
Calculate the future value of your savings with compound interest. Input initial deposit, monthly contribution, interest rate, and time period to see growth.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Interest Calculator Savings
- Enter Initial Deposit: Input the starting amount in dollars (e.g., $1,000). Must be a non-negative number.
- Enter Monthly Contribution: Input the amount you plan to add each month (e.g., $100). Must be non-negative.
- Enter Annual Interest Rate: Input the yearly interest rate as a percentage (e.g., 5 for 5%). Must be between 0 and 100.
- Enter Number of Years: Input the total savings duration in years (e.g., 10). Must be between 1 and 100.
- Select Compound Frequency: Choose how often interest compounds: Monthly, Quarterly, Semi-Annually, or Annually.
- Click "Calculate": Press the button to compute results.
Outputs Explained:
- Future Value: Total amount after all contributions and interest.
- Total Contributions: Sum of initial deposit plus all monthly contributions.
- Total Interest Earned: Interest earned on your deposits.
Note: All monetary values are in US dollars ($). Ensure inputs are valid numbers to avoid errors.
Previous Results
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Frequently Asked Questions
The formula used is FV = P*(1+r/n)^(nt) + PMT*[((1+r/n)^(nt)-1)/(r/n)], where P is initial deposit, PMT is monthly contribution, r is annual interest rate, n is compounding frequency, and t is years.
Simple interest is calculated only on the principal amount, while compound interest is calculated on the principal and accumulated interest, leading to faster growth.
Yes, the calculator uses dollar signs but you can treat the values as any currency since it only performs mathematical calculations.
