Three of India's most popular "safe" investments — NSC at 7.7%, PPF at 7.1%, and bank FDs at 7% — look nearly identical on the surface. But after tax and inflation, they deliver wildly different real outcomes. At the 30% tax bracket with 6% CPI: PPF gives +1.04% real return (the only one that beats inflation — because it is fully tax-free). NSC delivers approximately -0.57% real (taxed at maturity). FD gives -1.04% real (taxed annually, the worst outcome). The lesson is stark: among India's three most trusted guaranteed instruments, only PPF actually preserves your purchasing power. The other two, despite appearing "safe," slowly erode your real wealth if you are in the higher tax brackets.
Yet each instrument has its role. NSC's 5-year lock-in serves medium-term goals that PPF's 15-year tenure cannot. FDs offer unmatched liquidity and flexibility that neither NSC nor PPF provides. The question is not which is universally "best" but which combination serves your specific goals, tax bracket, and time horizon. This guide breaks down every dimension — rates, tax, real returns, maturity calculations, liquidity, and safety — so you can make a data-driven allocation decision instead of defaulting to whatever your bank pushes.
NSC 7.7%: 5yr lock-in, 80C, interest taxable at maturity, sovereign guarantee. PPF 7.1%: 15yr lock-in, 80C, interest + maturity FULLY TAX-FREE (EEE), partial withdrawal yr 7+. FD ~7%: Flexible tenure, 80C (5yr tax-saver), interest taxed annually, DICGC ₹5L insured. Use our PPF Calculator and FD Calculator.
Feature-by-Feature Head-to-Head
| Feature | NSC | PPF | FD (Tax-Saver) |
|---|---|---|---|
| Interest Rate | 7.7% | 7.1% | 6.5-7.5% |
| Lock-in Period | 5 years | 15 years | 5 years (tax-saver) |
| Tax on Investment | 80C (₹1.5L) | 80C (₹1.5L) | 80C (₹1.5L, tax-saver only) |
| Tax on Returns | Taxable at maturity (slab) | FULLY EXEMPT (EEE) | Taxable every year (slab) |
| TDS | None | None | 10% if interest >₹40K/yr |
| Effective Rate (30% bracket) | ~5.4% | 7.1% (no tax) | ~4.9% |
| Real Return (at 6% CPI, 30%) | -0.57% | +1.04% | -1.04% |
| Safety | Sovereign guarantee | Sovereign guarantee | DICGC ₹5L per bank |
| Partial Withdrawal | Not allowed | From year 7 | Not allowed (tax-saver) |
| Loan Facility | Can pledge as collateral | PPF loan from year 3-6 | Loan against FD available |
| Min/Max Investment | ₹1,000 / No limit | ₹500 / ₹1.5L per year | ₹1,000 / No limit |
| Ideal For | Medium-term (5yr) goals | Long-term wealth + tax savings | Flexible, short-to-medium term |
Maturity Comparison: ₹1.5L/Year at Maximum (After Tax)
| Instrument | Tenure | Total Invested | Gross Maturity | Interest Earned | Tax (30% bracket) | Net Amount |
|---|---|---|---|---|---|---|
| NSC 7.7% | 5 years | ₹7.50L | ₹9.42L | ₹1.92L | ₹0.60L | ₹8.82L |
| FD 7% | 5 years | ₹7.50L | ₹9.28L | ₹1.78L | ₹0.56L | ₹8.72L |
| PPF 7.1% | 15 years | ₹22.50L | ₹40.68L | ₹18.18L | ₹0 (EEE) | ₹40.68L |
PPF's power becomes blindingly clear over its full 15-year tenure: ₹22.5 lakh invested becomes ₹40.68 lakh with zero tax — ₹18.18 lakh of completely tax-free interest. No other guaranteed instrument in India offers this. Over the same 5-year period, NSC beats FD by approximately ₹10,000 after tax — the higher rate (7.7% vs 7%) and deferred taxation give NSC a small but consistent edge. Neither NSC nor FD at the 30% bracket beats inflation in real terms — both slowly erode purchasing power. The ideal strategy: maximize PPF first (₹1.5L/year), then use NSC for additional medium-term goals, and FDs only for their superior liquidity when you need accessible guaranteed returns.
Real Returns by Tax Bracket (at 6% CPI Inflation)
| Instrument | Pre-Tax Rate | 5% Bracket (Real) | 20% Bracket (Real) | 30% Bracket (Real) |
|---|---|---|---|---|
| NSC 7.7% | 7.7% | +0.88% | +0.19% | -0.57% |
| PPF 7.1% | 7.1% (tax-free) | +1.04% | +1.04% | +1.04% |
| FD 7% | 7% | +0.61% | -0.38% | -1.04% |
PPF's real return is constant at +1.04% regardless of your tax bracket — that is the power of EEE status. NSC and FD only beat inflation at the lowest 5% tax bracket. At 20% and above, FD actually destroys purchasing power. At 30%, both NSC and FD lose real value — the tax burden makes their nominal 7-7.7% rates meaningless in real terms. This is the critical insight most Indian investors miss: a "safe" FD at 7% can be a wealth-destroying investment if you are in the 20-30% tax bracket. For the complete mathematical framework, see our real rate of return guide and FD real returns analysis.
Calculate Your PPF & FD Returns
See exact maturity values, interest earned, and tax impact for your specific investment amounts.
Open PPF Calculator →When to Choose Each: Decision Framework
| Scenario | Best Choice | Why |
|---|---|---|
| Long-term wealth (10-15yr+) | PPF | Highest after-tax return, EEE status, compounding |
| Retirement savings base | PPF + EPF | Both tax-free, sovereign guarantee |
| Medium-term goal (5yr) | NSC | Higher rate than FD, deferred tax, sovereign guarantee |
| Already maxed PPF (₹1.5L) | NSC | Additional 80C via accrued interest, 7.7% rate |
| Emergency fund (need liquidity) | FD (sweep-in) | Instant access, no lock-in, auto-liquidation |
| Short-term parking (1-3yr) | FD or Liquid MF | Flexible tenure, predictable returns |
| Senior citizen income | SCSS + FD | Higher rates (8.2% SCSS), quarterly income |
| Child education (15yr horizon) | PPF + Equity SIP | PPF as safe base, equity for growth |
The golden rule: PPF first (up to ₹1.5L/year), NSC second (for medium-term guaranteed goals), FDs third (only for liquidity and short-term needs). Together they form the debt pillar of your portfolio, complementing the growth from equity SIPs, step-up SIPs, and SGBs. For the full asset class comparison including equity and gold, see our gold vs FD vs equity guide. Also relevant: NPS vs PPF vs EPF, savings account vs inflation, Section 80C deductions, old vs new tax regime, retirement corpus, beating inflation, cost of delay, emergency fund, SSY guide, EPF rate history. Calculators: PPF Calculator, FD Calculator, RD Calculator, SIP Calculator, Inflation Calculator, Purchasing Power Calculator, NPS Calculator, EPF Calculator.