The EEE question

Two products quoting the same rate can leave you with very different amounts, and the reason is almost always tax applied at a stage you did not think about. This chapter is the framework for seeing that in advance.

The three stages

Money in a savings product passes three taxable moments:

1. Contribution — is what you put in deductible from your income?
2. Accumulation — is the interest or growth taxed as it accrues?
3. Withdrawal — is the maturity amount taxed when it comes out?

Each is independently either Exempt or Taxed, which gives the shorthand: EEE, EET, ETE, TTE and so on, read in that order.

The framework is the whole chapter. Once you ask the three questions of any product, you can compare instruments that are described in completely different vocabularies.

Where the common products sit

Product	Contribution	Accumulation	Withdrawal
Public Provident Fund	E	E	E
Sukanya Samriddhi	E	E	E
Five-year post office time deposit	E	T	—
NSC (VIII issue)	E	T (but reinvested)	—
Bank fixed deposit, ordinary	T	T	—
Post office savings account	T	partly exempt	—

PPF is the clean EEE case: NSI states that the deposit qualifies for deduction and the interest earned in the account is free from income tax, and the maturity proceeds come out untaxed.

An ordinary bank FD is the opposite end: no deduction, and interest taxed as it accrues at your slab rate, whether or not you have withdrawn it.

NSC is the interesting middle case. Its interest is taxable, but because it is reinvested rather than paid out, that reinvested interest can itself qualify for the contribution deduction in the year it accrues — so the practical burden is lighter than "taxed" suggests. This is why the three-letter labels are a starting point rather than an answer.

The caution about section numbers

NSI's own pages describe PPF's treatment by citing "Sec. 80-C of I.T. Act" and "Section 10 of I.T. Act". Those are sections of the Income-tax Act, 1961 — which stands repealed with effect from 1 April 2026, replaced by the Income-tax Act, 2025.

The Tax subject makes the point directly: section numbers from the 1961 Act no longer refer to live provisions, and while the substance behind most of them survived the restructuring, the citations did not.

Two practical consequences. First, a great deal of published material — including some government scheme pages — still cites the old numbering, so encountering "80C" is not evidence that you are reading something current. Second, the existence and shape of a benefit is a more durable fact than its section number, which is why this chapter describes treatment by stage rather than by citation. When you need the operative provision, take it from the current Act rather than from a scheme brochure.

Why the deduction is worth less than it looks

The contribution deduction is shared. A single overall ceiling covers a group of eligible investments together — PPF, Sukanya Samriddhi, the five-year time deposit, NSC, life insurance premiums, principal repayment on a home loan, and others.

So these products are not additive; they compete for one allowance. Someone already exhausting it through a home loan principal repayment gets no contribution benefit from a fresh PPF deposit, and should evaluate that deposit on its rate and its lock-in alone.

This is the single most common error in Indian retail tax planning: treating each eligible product as bringing its own benefit, and buying several.

Working the problem

An FD and a PPF both at about 7%, for someone in the 30% slab.

The FD. Interest is taxable as it accrues at the slab rate. 7% taxed at 30% leaves 4.9% after tax, and that is the rate at which the money actually compounds, year after year.

The PPF. Interest is exempt, so it compounds at the full 7.1% — the rate notified since 1 April 2020 — and comes out untaxed.

The gap is about 2.2 percentage points a year, compounding. Over fifteen years, ₹1,00,000 at 4.9% becomes roughly ₹2,05,000; at 7.1% it becomes roughly ₹2,81,000. The after-tax difference is more than three-quarters of the original amount, from two products quoting the same headline rate.

What the FD would have to pay to match. To net 7.1% after a 30% slab, the gross rate would need to be 7.1 / (1 − 0.30) = about 10.1%. No bank offers a retail deposit at that level while the administered PPF rate is 7.1%, which is the real reason PPF is hard to beat for money you can genuinely lock away — not the rate, but where the rate sits in the tax order.

And then the contribution deduction, if you have allowance left, adds a one-off benefit of your slab rate on the amount deposited — about ₹45,000 on a ₹1.5 lakh deposit at 30%. If your allowance is already full, that is zero, and the comparison above still stands on the accumulation and withdrawal stages alone.

The honest qualifications. The FD has no lock-in and PPF locks hard for roughly six years, so the PPF advantage is partly a liquidity premium you are being paid. Someone in a low slab sees a much smaller gap — at 5% the FD nets 6.65% and the difference nearly disappears. And the PPF rate is reset quarterly while the FD rate is contracted, so the comparison is between a known rate and an administered one.

The point

Any savings product can be taxed at contribution, during accumulation and at withdrawal, and asking those three questions lets you compare instruments described in different vocabularies. PPF and Sukanya Samriddhi are exempt at all three, while an ordinary bank FD is taxed at contribution and on accrual — which at a 30% slab turns an identical 7% headline into 4.9% compounding against 7.1%, a gap of more than three-quarters of the principal over fifteen years. The contribution deduction is shared across a group of products rather than earned separately by each, and the 1961 Act section numbers everyone still quotes no longer cite live law.