01
Enter your investment
Type the lump sum you will invest in the certificate. NSC runs for a fixed 5-year term.
NSC Calculator
See your NSC maturity and interest at 7.7% — the 5-year certificate.
Updated Reviewed by Sajid Hussain· Editor
Try it with your numbers
Results update in real time as you type — no submit needed.
Your numbers
NSC bills sellers in Indian Rupee (INR), so this calculator works in INR — not your selected US Dollar ($). Every figure below matches your real NSC statement. Localised USD marketplaces are coming soon.
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Last updated
June 14, 2026
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India Savings Tool
What Is an NSC Calculator?
An NSC calculator works out the maturity value and interest of a National Savings Certificate — a 5-year, government-backed post-office scheme — using your investment and the 7.7% rate.
**NSC is a fixed 5-year certificate.** You invest a lump sum and the post office pays a government-set rate (7.7% for FY 2025-26), compounded annually and paid in full at maturity. This calculator turns your investment into a maturity figure and splits out the interest.
**The 80C benefit is unusually generous.** The amount you invest qualifies for a Section 80C deduction, and the interest of years 1–4 is deemed reinvested — so it also counts toward 80C in those years. Only the final year's interest is taxed without relief. The calculator shows this split.
**It is government-backed, and the tax is small.** Like PPF and SSY, NSC carries sovereign safety; unlike them its interest is taxable — but only the final-year slice, since years 1–4 are 80C-sheltered. Set your slab and the calculator shows the net after that small tax and the maturity's worth in today's money — far less tax than an FD, where every rupee of interest is taxed.
**Rates are set quarterly.** NSC currently pays 7.7%, higher than most tax-saver FDs. The calculator defaults to this rate but lets you change it to model a future revision or compare with another scheme.
Quick facts
- Term
- Fixed 5 years
- Rate (FY 2025-26)
- 7.7% p.a., compounded yearly
- Tax
- 80C on investment + yrs 1–4 interest
- Minimum
- ₹1,000 (no upper limit)
- Backing
- Government of India
- Free to use
- No sign-up needed
How It Works
Calculate Your NSC Maturity in Two Steps
02
Set the interest rate
The rate defaults to the current 7.7%. Adjust it if you want to model a different rate or compare schemes.
03
Read maturity and the tax split
See the maturity value, total interest, the 80C-eligible reinvested interest, and the taxable final-year interest.
Steps to use the NSC Calculator: Enter your investment, Set the interest rate, Read maturity and the tax split.
The Formula
How NSC Maturity Is Worked Out
01
Maturity value
Maturity = P × (1 + r)^5
P is the investment and r the annual rate (e.g. 0.077). Interest compounds yearly and is paid in full at the end of 5 years.
Example: P = ₹1,00,000, r = 7.7%, 5 years → maturity ≈ ₹1,44,903
02
Reinvested interest (80C)
Reinvested = interest of years 1–4
The interest earned in the first four years is deemed reinvested in NSC, so it qualifies for Section 80C in those years — an extra deduction on top of the original investment.
Example: On ₹1 lakh, years 1–4 interest ≈ ₹34,543 (80C-eligible)
03
Final-year interest (taxable)
Taxable = year-5 interest
The 5th-year interest is paid out at maturity, so it cannot be reinvested and is taxed at your slab with no 80C offset.
Example: On ₹1 lakh, year-5 interest ≈ ₹10,360 (taxable)
04
Net after tax & real worth
Net = maturity − final-year interest × slab% × 1.04
Only the final-year interest is taxed (slab + 4% cess), so the tax is small — unlike an FD. The post-tax maturity is then discounted for inflation to show its real worth in today's money.
Example: 30% on ₹10,360 → ₹3,232 tax; net ≈ ₹1,41,671
Worked Example
Step-by-Step Walkthrough (₹1 lakh at 7.7%)
Currency note: the example below uses a benchmark scenario priced in Indian Rupee (INR). Values are converted to US Dollar (USD) at the latest exchange rate so you can compare against your own numbers.
Scenario
A $100,000.00 National Savings Certificate at 7.7%, held for the full 5 years.
1
Step 1 · Compound for 5 years
At 7.7% compounded annually, the $100,000.00 certificate grows to its maturity value.
Maturity = $144,903.00
2
Step 2 · Total interest
The gap between maturity and your investment is the interest, all paid at the end.
Interest = $44,903.00
3
Step 3 · The tax split
Years 1–4 interest is reinvested and 80C-eligible; only the final-year interest is taxable.
80C reinvested $34,543.00 · taxable $10,360.00
The takeaway
A ₹1 lakh NSC at 7.7% returns about $144,903.00 in 5 years — $44,903.00 of it interest. Most of that interest ($34,543.00) is reinvested and keeps earning your 80C deduction, so NSC is one of the more tax-efficient guaranteed 5-year options.
By investment
NSC Maturity by Investment (7.7%, 5 years)
| Metric | Poor | Average | Good | Excellent |
|---|---|---|---|---|
Maturity at 5 years Calcrux projection · 7.7% | ₹25k → ₹36.2k | ₹50k → ₹72.5k | ₹1L → ₹1.45L | ₹1.5L → ₹2.17L |
Total interest Calcrux projection · 7.7% | ₹11.2k | ₹22.5k | ₹44.9k | ₹67.4k |
80C deduction Section 80C (capped ₹1.5L) | ₹25k | ₹50k | ₹1L | ₹1.5L |
Comparison
Calcrux vs Groww vs Bank Calculators
| Feature | Calcrux (Free) | Groww | Bank site |
|---|---|---|---|
| Maturity & total interest | |||
| Splits 80C reinvested vs taxable interest | |||
| Net maturity after tax | |||
| Real value after inflation | |||
| Editable rate for revisions | |||
| Year-by-year growth chart | |||
| Free, no sign-up required |
Common Mistakes
NSC Mistakes to Avoid
Thinking all NSC interest is tax-free
Why it matters
NSC is not EEE like PPF. The interest is taxable, though years 1–4 get 80C relief through reinvestment. People over-estimate the post-tax return.
Fix
Set your slab; the calculator taxes only the final-year interest and shows the net maturity and its real worth — the true after-tax position.
Missing the reinvested-interest 80C
Why it matters
Many people claim 80C only on the original investment and forget that years 1–4 interest is reinvested and also deductible — leaving a deduction unclaimed each year.
Fix
Claim the reinvested interest under 80C each year too. The calculator shows the year-by-year reinvested amount.
Investing over ₹1.5 lakh for the deduction
Why it matters
Only ₹1.5 lakh a year qualifies for 80C. Investing more does not give extra deduction — the surplus just earns taxable interest.
Fix
Cap the 80C-driven amount at ₹1.5 lakh; the calculator flags investment above the limit.
Expecting early withdrawal
Why it matters
NSC has a hard 5-year lock-in with almost no premature exit. People who need liquidity are stuck.
Fix
Treat NSC as a fixed 5-year commitment. For flexible money, use an FD or a liquid fund instead.
Ignoring better long-term options
Why it matters
For horizons beyond 5 years, tax-free PPF or an equity SIP usually beats NSC after tax.
Fix
Use NSC for a 5-year goal; compare with the PPF and SIP calculators for longer horizons.
Pro Tips
Get More From Your NSC
Claim reinvested interest yearly
Each year, add the NSC interest of years 1–4 to your 80C claim — it is deemed reinvested and deductible, beyond the original investment.
Cap 80C money at ₹1.5 lakh
Only ₹1.5 lakh qualifies for the deduction. Invest the 80C-driven amount up to that; park extra elsewhere.
Compare with a tax-saver FD
NSC at 7.7% usually beats a 5-year tax-saver FD around 7%, and both give 80C — check the maturity difference here.
Use it as loan collateral
You can pledge an NSC for a loan and keep earning interest on it — handy in a cash crunch without breaking the certificate.
Match it to a 5-year goal
NSC suits a known 5-year need — a down payment or a school fee — because the term and return are both fixed.
Who Uses This
Who Uses This NSC Calculator
The NSC Calculator works across every stage of the workflow.
Tax-saving investors
Someone using their ₹1.5 lakh 80C limit checks NSC's guaranteed 5-year maturity and the reinvested-interest deduction.
Safety-first savers
A conservative saver wanting a government-backed return over 5 years compares NSC with a tax-saver FD.
5-year goal planners
A parent saving for a fixed 5-year goal works out exactly what ₹1 lakh in NSC becomes.
People comparing schemes
An investor weighs NSC's 7.7% taxable-but-80C return against PPF's tax-free 7.1% over different horizons.
Loan applicants
Someone pledging an NSC as collateral checks its current value and maturity before approaching the bank.
Glossary
Key NSC Terms
Every important term you'll encounter in this calculator and the broader topic.
- National Savings Certificate (NSC)
- A 5-year, government-backed post-office savings scheme with a fixed interest rate, compounded annually and paid at maturity.
- Maturity Value
- What the certificate is worth at the end of 5 years — your investment plus the annually compounded interest.
- Reinvested Interest
- The interest of years 1–4, treated as reinvested into NSC and therefore eligible for a Section 80C deduction in those years.
- Section 80C
- The income-tax section allowing a deduction up to ₹1.5 lakh for eligible investments, including the NSC amount and its reinvested interest.
- Lock-in Period
- The fixed 5 years during which an NSC cannot normally be encashed, except on death, court order or forfeiture by a pledgee.
- Net Maturity (after tax)
- The maturity after tax on the final-year interest. Because years 1–4 are 80C-sheltered, the tax is small versus an FD.
- Real Value
- The post-tax maturity after inflation — its true purchasing power. At 7.7% vs ~6% inflation, NSC's real return is modest.
Help & answers
Frequently asked questions
Everything you need to know about how the NSC Calculator works.
01What is an NSC calculator?
An NSC calculator works out what a National Savings Certificate grows to after its 5-year term. You enter the investment and the rate; it returns the maturity value, the interest earned, and how the interest splits for tax purposes.
02How is NSC maturity calculated?
Maturity = P × (1 + r)^5, where P is the investment and r is the annual rate. Interest is compounded yearly and paid in full at the end of 5 years. At 7.7%, ₹1,000 grows to about ₹1,449.
03What is the maturity of ₹1 lakh NSC at 7.7%?
₹1 lakh in NSC at 7.7% grows to about ₹1,44,903 after 5 years — roughly ₹44,903 of interest, compounded annually and paid at maturity along with the principal.
04What is the NSC interest rate for 2025-26?
The NSC interest rate is 7.7% per annum for FY 2025-26, compounded annually. The government reviews small-savings rates every quarter, so it can change; this calculator lets you set any rate.
05Is NSC interest taxable?
Yes, but with a twist. The interest is taxable, yet the interest of years 1–4 is treated as reinvested and qualifies for Section 80C in those years. Only the 5th-year interest is taxed at your slab with no 80C offset.
06What is the NSC 80C tax benefit?
The amount you invest qualifies for a Section 80C deduction up to ₹1.5 lakh. On top of that, the reinvested interest of years 1–4 also counts toward 80C in those years — a benefit unique to NSC and tax-saver schemes.
07How much tax do I pay on NSC at maturity?
Only the final-year interest is taxed, if you claim the reinvested years 1–4 under 80C. On ₹1 lakh at 30%, that is about ₹3,232 — far less than an FD, where all the interest is taxed. Set your slab to see the net maturity.
08What is NSC worth after inflation?
At 7.7% against about 6% inflation, NSC gives a modest real return near 1.5%. The calculator shows the post-tax maturity in today's money, so you see its true purchasing power over the 5 years.
09NSC vs PPF — which is better?
NSC has a 5-year term and currently pays 7.7%, but its interest is taxable (with the 80C reinvestment relief). PPF runs 15 years at 7.1% and is fully tax-free (EEE). Choose NSC for a fixed 5-year goal, PPF for long-term tax-free growth.
10NSC vs tax-saver FD — which should I pick?
Both have a 5-year lock-in and qualify for 80C. NSC currently pays more (7.7% vs about 7% for most FDs) and is government-backed, and its reinvested interest gets 80C. A tax-saver FD is easier to open at your bank but usually earns a little less.
11What is the minimum and maximum NSC investment?
The minimum is ₹1,000, in multiples of ₹100, with no upper limit. However, only ₹1.5 lakh a year qualifies for the Section 80C deduction; you can invest more, but the excess gets no tax benefit.
12Can I withdraw NSC before 5 years?
Generally no. NSC has a strict 5-year lock-in and can only be encashed early on the holder's death, by court order, or on forfeiture by a pledgee. Plan it as a fixed 5-year investment.
13Can NSC be used as loan collateral?
Yes. An NSC can be pledged as security for a loan from banks and some institutions. The certificate is transferred to the lender as collateral, and you keep earning interest on it.
14Is this NSC calculator free and accurate?
Yes — it is free, needs no sign-up, and runs in your browser. It uses the standard annual-compounding NSC maths and the 7.7% FY 2025-26 rate, matching the official ₹1,000 → ₹1,449 figure. Rates are revised quarterly by the government.
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retirement savings
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Topics
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