National Savings Certificate (NSC) Calculator
The NSC Calculator is a helpful tool designed to estimate the maturity amount of your investment in the National Savings Certificate – a popular fixed-income savings scheme by the Government of India.
Section 80C of the Income Tax Act exempts NSC investments up to Rs 1.5 lakhs from tax. They have a five-year lock-in term. Fixed interest is earned on NSC certificates. The current interest rate is 7.7%. NSC, like other fixed-income instruments such as PPF and Post Office FDs, is a safe and low-risk vehicle
NSC Scheme Highlights
- Tenure: 5 years (fixed)
- Interest Rate: Compounded annually (as of Q1 FY 2025–26, it is 7.7%)
- Minimum Investment: ₹1,000
- Maximum Investment: No upper limit
- Tax Benefit: Eligible for deduction under Section 80C (up to ₹1.5 lakh per annum)
- Interest Payout: Interest is not paid annually but reinvested and paid at maturity
Formula Used

Where:
- P = Principal (initial investment)
- r = Interest rate (e.g., 7.7%)
- n = Number of years (5 years for NSC)
Example
Mahendra invested ₹1,00,000 in NSC at an interest rate of 7.7% per annum for 5 years. So after 5 years the Maturity Amount = ₹144903.38
FAQs NSC Calculator
What is an NSC Calculator?
It’s an online tool that helps investors estimate the final maturity amount and total interest earned from their NSC investment.
Is the NSC interest rate fixed?
Yes, once you invest, the interest rate remains fixed for the entire tenure of 5 years.
Is NSC interest taxable?
Yes, the interest is taxable. However, since it is reinvested every year (except the final year), it qualifies for tax deduction under Section 80C.
Is there any risk involved with NSC?
NSC is a government-backed instrument, making it a very safe investment option with guaranteed returns.
How is NSC interest calculated in the calculator?
It is calculated using compound interest with annual compounding over a fixed term of 5 years.