Monthly Savings Account Interest Calculator
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Reviewed by Calculator Editorial Team
This monthly savings account interest calculator helps you determine how much interest you'll earn on your savings over time. Whether you're planning for short-term goals or long-term investments, understanding how compound interest works can help you make smarter financial decisions.
How to Use This Calculator
Using our monthly savings account interest calculator is simple. Follow these steps:
- Enter the principal amount (the initial deposit or amount of money you want to save).
- Select the annual interest rate offered by your savings account.
- Choose the term of your savings (how many months you plan to save).
- Click the "Calculate" button to see your estimated interest earnings.
The calculator will display your total interest earned and the future value of your savings after the specified term.
Formula Explained
The calculation for monthly savings account interest is based on the following formula:
Future Value Formula
Future Value = Principal × (1 + Monthly Interest Rate)Number of Months
Where Monthly Interest Rate = Annual Interest Rate ÷ 12
This formula accounts for compound interest, which means your interest is calculated on both the initial principal and the accumulated interest from previous periods.
Worked Example
Let's say you deposit $1,000 into a savings account with a 2% annual interest rate. You plan to leave the money in the account for 12 months. Here's how the calculation works:
Example Calculation
Principal = $1,000
Annual Interest Rate = 2% (0.02)
Monthly Interest Rate = 0.02 ÷ 12 = 0.0016667
Number of Months = 12
Future Value = $1,000 × (1 + 0.0016667)12 ≈ $1,020.18
Total Interest Earned = $1,020.18 - $1,000 = $20.18
In this example, you would earn approximately $20.18 in interest over 12 months.
Frequently Asked Questions
Most savings accounts calculate interest monthly, which means your balance grows by the monthly interest rate each month.
In most cases, interest earned on savings accounts is not taxable. However, you should consult with a tax professional for specific advice.
Yes, you can withdraw money at any time, but early withdrawals may result in penalties or reduced interest rates, depending on your account terms.