Simple vs Compound: $50,000 at 6% for 15 Years
At 6% for 15 years, simple interest adds $45,000 while compound interest grows the balance to approximately $119,828.
How to use this tool
- Enter principal, annual interest rate and years in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your compound balance and the full breakdown beneath it.
For large sums like $50,000, choosing compound over simple interest can mean tens of thousands of dollars difference.
Frequently asked questions
- When do simple and compound give the same result?
- At t = 1 year (with annual compounding) they are identical. Beyond year 1 compound interest always exceeds simple interest for positive rates.
- Which does a bank savings account use?
- Most savings accounts and mortgages use compound interest. Some short-term loans and bonds use simple interest.