Helpful Guide
Simple Interest vs Compound Interest
Understand the difference between steady interest and interest that builds on itself.
Understanding the difference between simple interest and compound interest can help you make better financial decisions. While both methods calculate interest on money borrowed or invested, they work in different ways and can produce very different results over time.
Simple interest is calculated only on the original amount of money, known as the principal. This means the amount of interest earned or charged stays the same throughout the life of the loan or investment. Because interest is not added back to the principal, growth remains steady and predictable.
Compound interest works differently. It is calculated on both the original principal and any interest that has already been earned. As interest continues to build, future interest is calculated on an increasingly larger balance. This is why compound interest is often described as interest earning interest.
In general, simple interest is easier to calculate and is commonly used for some short-term loans. Compound interest is more common for savings accounts and long-term investments because it allows your money to grow faster over time. Understanding how each method works can help you compare financial products and choose the option that best suits your goals.
Quick Tip
When comparing financial products, check whether the interest is simple or compound. The difference can become much larger over longer time periods.