Savings Account Interest Calculator Excel
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Reviewed by Calculator Editorial Team
Calculate your savings account interest easily with our online calculator. Learn how to compute interest manually and understand the difference between APR and APY. This guide also includes Excel formulas for financial calculations.
How to Use This Calculator
Our savings account interest calculator helps you determine how much interest you'll earn on your savings. Simply enter the principal amount, annual interest rate, and time period, then click "Calculate".
For the most accurate results, use the exact APR (Annual Percentage Rate) from your bank's statement, not the APY (Annual Percentage Yield).
Step-by-Step Guide
- Enter the initial deposit amount in the "Principal" field
- Input your bank's annual interest rate in the "APR" field
- Select the time period (days, months, or years)
- Enter the number of periods in the "Time" field
- Click "Calculate" to see your interest earnings
Example Calculation
If you deposit $1,000 at an APR of 2% for 1 year, you'll earn $20 in interest. The calculator shows this as $1,020 total after interest.
Formula Explained
The simple interest formula used in this calculator is:
Where:
- Principal = Initial deposit amount
- APR = Annual Percentage Rate (as a percentage)
- Time = Number of years the money is saved
The total amount after interest is calculated by adding the interest to the principal.
APR vs APY: What's the Difference?
APR (Annual Percentage Rate) is the simple interest rate your bank advertises. APY (Annual Percentage Yield) includes compounding interest and fees, giving a more accurate picture of your earnings.
Most savings accounts compound interest monthly, so APY will always be higher than APR.
Example Comparison
| Term | APR | APY |
|---|---|---|
| 1 year | 2.00% | 2.02% |
| 5 years | 2.00% | 2.10% |
Excel Formulas for Savings Interest
You can replicate this calculator's calculations in Excel using these formulas:
For compound interest (more accurate for savings accounts):
Where:
- Principal = Initial deposit amount
- APR = Annual Percentage Rate (as a decimal)
- Time = Number of years
Excel Example
If cell A1 contains the principal, cell B1 the APR, and cell C1 the time in years, the simple interest formula would be:
Frequently Asked Questions
How often is interest calculated on savings accounts?
Most savings accounts calculate interest daily, monthly, or annually. The most common is monthly compounding, which means interest is added to your balance each month.
Can I withdraw money from a savings account without penalty?
Yes, you can withdraw money from most savings accounts without penalty, but check your bank's terms as some accounts may have withdrawal limits or fees.
What happens if I don't withdraw my interest?
Your interest will continue to accrue and be added to your balance automatically. You don't need to do anything to earn interest on savings accounts.
Is there a minimum balance requirement for savings accounts?
Many savings accounts have a minimum balance requirement, typically between $100-$500. Check with your bank for specific requirements.