Savings Accounts Calculator
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Reviewed by Calculator Editorial Team
Use our savings accounts calculator to estimate how much interest you'll earn on your savings over time. This tool helps you plan your savings goals by showing the future value of your deposits with compound interest.
How to Use This Calculator
To use the savings accounts calculator, follow these simple steps:
- Enter your initial deposit amount in the "Initial Deposit" field.
- Specify the annual interest rate in the "Annual Interest Rate" field.
- Choose the compounding frequency from the dropdown menu (annually, semi-annually, quarterly, monthly, or daily).
- Enter the number of years you plan to save in the "Number of Years" field.
- Click the "Calculate" button to see your results.
The calculator will display your future savings balance, total interest earned, and a growth chart.
Formula Used
The savings accounts calculator uses the compound interest formula:
A = P × (1 + r/n)^(nt)
Where:
A = the future value of the investment/loan, including interest
P = the principal investment amount (the initial deposit or loan amount)
r = the annual interest rate (decimal)
n = the number of times that interest is compounded per year
t = the time the money is invested or borrowed for, in years
For the total interest earned, we use:
Interest = A - P
Worked Example
Let's calculate the future value of $1,000 saved at 5% annual interest rate, compounded monthly, for 10 years.
- Initial deposit (P) = $1,000
- Annual interest rate (r) = 5% or 0.05
- Compounding frequency (n) = 12 (monthly)
- Number of years (t) = 10
Using the formula:
A = 1000 × (1 + 0.05/12)^(12×10)
A = 1000 × (1.004167)^120
A ≈ $1,647.01
The future value after 10 years will be approximately $1,647.01, with $647.01 in total interest earned.
Frequently Asked Questions
- How does compound interest work in savings accounts?
- Compound interest means that interest is calculated on the initial principal and also on the accumulated interest of previous periods. This causes your savings to grow exponentially over time.
- What is the difference between APY and APR?
- APR (Annual Percentage Rate) is the simple interest rate, while APY (Annual Percentage Yield) includes the effect of compounding. APY is always higher than APR for the same account.
- How often should I compound my savings?
- The more frequently your savings are compounded, the faster they will grow. Monthly compounding is common in savings accounts, while daily compounding is typical for certificates of deposit (CDs).
- Is it better to have a high interest rate or frequent compounding?
- Both factors contribute to growth, but the interest rate has a greater impact on the final amount. However, frequent compounding can make a significant difference over long periods.
- How can I maximize my savings growth?
- To maximize growth, choose a savings account with a high APY, make regular deposits, and consider opening a CD for higher interest rates on longer terms.