What is Simple Interest?

Simple Interest (SI) is the interest calculated only on the original principal amount throughout the investment or loan period. Unlike compound interest, the interest earned is not added back to the principal for future calculations.

It is widely used for personal loans, vehicle loans, educational loans, and short-term investments where interest is calculated at a fixed rate over a specified period.

Simple Interest Formula

• P = Principal Amount
• R = Annual Interest Rate (%)
• T = Time Period (Years)

Benefits of Simple Interest

• Easy to calculate and understand.
• Provides predictable returns.
• Commonly used for short-term loans.
• Suitable for education and vehicle loans.
• Helps estimate borrowing costs quickly.

Example Calculation

Frequently Asked Questions