Calculator 16 of 18
Simple Interest Calculator
Simple interest on principal over time.
About this calculator
Simple interest is calculated only on the original principal: SI = P × R × T ÷ 100. Commonly used for short-term loans and fixed deposits with simple interest payout.
Results are estimates for education only. Product suitability and premiums depend on insurer underwriting and market conditions.
Inputs
Understanding Simple Interest Calculator
Simple interest is calculated only on the original principal. It is common in some short-term loans and interest-payout deposits where interest does not get added back to earn more interest.
How this calculator works
Using SI = P × R × T ÷ 100, the calculator shows interest earned and the total amount payable or receivable over the chosen period.
Example
₹1 lakh at 8% for 3 years earns ₹24,000 simple interest, for a total of ₹1.24 lakh — less than the same money would earn under compound interest over longer periods.
Practical tips
- Always check whether a product uses simple or compound interest.
- For long tenures, compounding usually grows wealth faster.
- Compare effective yields, not just headline rates.
Limitations
Many modern investments compound; do not assume simple interest unless the product terms say so.
Need help applying these numbers to your situation? Request a free consultation with Smart Wealth Hub, or explore our financial services.