How the NSC works
The National Savings Certificate is a small-savings scheme you buy at any post office, backed directly by the Government of India. You put in a lump sum — at least ₹1,000, in multiples of ₹100, with no upper limit — and it grows at a fixed rate for exactly 5 years. The Department of Economic Affairs reviews small-savings rates every quarter, and the current NSC rate is 7.7%. Crucially, the rate you get on the day of purchase is locked in for the entire term, so a later cut in the announced rate never touches certificates you already hold.
Interest is compounded once a year but nothing is paid out along the way — the whole amount, principal plus 5 years of compounded interest, lands in your hands only at maturity. That makes NSC a pure accumulation product: there is no income stream to spend, and no temptation to interrupt the compounding. At 7.7%, ₹1,00,000 grows to ₹1,44,903 over the 5 years — a gain of roughly 45% on what you put in.
₹1,00,000 in NSC at 7.7%: year by year
Because compounding is annual, the balance climbs in clean yearly steps, and each step is larger than the last as interest starts earning interest. In the first year ₹1,00,000 earns ₹7,700; by the fifth year the same certificate is earning about ₹10,360. The table below tracks the value at the end of each year — remember these are book values only, since nothing is actually payable until the 5-year mark.
| End of year 1 | ₹1,07,700 |
| End of year 2 | ₹1,15,993 |
| End of year 3 | ₹1,24,924 |
| End of year 4 | ₹1,34,544 |
| Maturity (end of year 5) | ₹1,44,903 |
The tax angle: 80C and the reinvested-interest benefit
Your NSC investment qualifies for a deduction under Section 80C, within the overall ₹1,50,000 annual limit — but only if you file under the old tax regime. The new regime offers no 80C deduction, so if that is your regime, judge NSC purely on its 7.7% return and government guarantee, not on tax savings.
The interest itself is taxable at your slab, but with a quirk that works in your favour. Since interest accrues each year and is deemed reinvested into the certificate, the accrued interest of the first 4 years counts as a fresh 80C investment in the year it accrues. On a ₹1,00,000 certificate, that covers roughly ₹34,543 of interest across years 1 to 4 — you declare the interest as income but claim a matching deduction, provided you have room under the ₹1.5 lakh cap. Only the fifth year’s interest, about ₹10,360, gets no reinvestment cover, because it is paid out rather than ploughed back.
The practical takeaway: under the old regime, an NSC held to maturity can end up with most of its interest effectively sheltered, which narrows the gap with tax-free options like PPF. Do declare the accrued interest every year, though — reporting all 5 years’ interest in one lump at maturity can push you into a worse slab and forfeits the yearly deductions.
Liquidity: the 5-year lock is real
NSC has one of the strictest lock-ins among small-savings schemes. There is no premature withdrawal at all — the only exceptions are the death of the holder or an order of a court. No medical-emergency clause, no partial withdrawal, no exit with a penalty. Before you buy, be sure the money genuinely will not be needed for 5 years; an emergency fund belongs in something you can actually reach.
What you can do is pledge the certificate as collateral. Banks and other specified lenders accept NSC as security for a loan, which gives you a route to liquidity without breaking the certificate — the compounding continues untouched while you borrow against it. That is a meaningful edge over simply not having the money, and it is one reason NSC remains popular with conservative savers who want a hard commitment device with an escape hatch that does not cost them the interest.