Basics
Simple Interest Calculator
Interest on a principal over time.
How to use this
Adjust the sliders and the result updates instantly. The figure uses standard formulas and current FY 2025-26 rates — treat it as an estimate to compare your options, then confirm the exact terms with your bank, fund or the department.
Total amount
₹1.4L
Principal₹1L
Interest₹40K
₹1,00,000 at 8% simple interest for 5 years earns ₹40,000.
Partner offer
See today's highest FD rates
Put idle money to work.
Frequently asked
Is the Simple Interest Calculator free to use?
Yes — every Arthly calculator is free, with no sign-up or app install required.
How accurate is the Simple Interest Calculator?
It uses standard financial formulas and current FY 2025-26 rates. Results are estimates to help you plan, not personalised financial advice — confirm details with your bank, fund or the relevant department.