SIP vs PPF — The Lock-in Is the Whole Story

A PPF account runs for a statutory term, with partial withdrawal permitted only after a specified number of years and within defined limits. Loans against the balance are allowed in certain years. Beyond that, the money is not available.

People describe this as the PPF's biggest drawback. In practice it is also why PPF balances actually survive. Money that cannot be touched does not get spent on a car, and a household that would have raided a flexible account arrives at the end with a balance intact.

The constraint is real though, and it is the same constraint we describe on our page for salaried households: a goal that arrives at 45 or 50 cannot be met from an account that unlocks much later. That is not an argument against the PPF. It is an argument for not having only the PPF.

The PPF rate is declared by the government and revised periodically. You know the rate applying now, and you know it can change over a fifteen-year term, so it is known rather than permanent.

A mutual fund SIP tells you nothing in advance. Its value follows what the scheme holds. We are not going to put a figure on it, because doing so requires assuming one, and an assumed figure printed on a page has a way of becoming a promise in the reader's memory.

The tax treatment differs too. PPF is widely used precisely because contributions, accrual and maturity are all treated favourably under current law. A mutual fund is taxed on redemption, on the gain, with treatment depending on category and holding period. Both are subject to change with each Finance Act, which is a good reason to plan around the structure rather than around a rate.

There is an annual limit on how much can go into a PPF account. For a household early in its earning life that limit is generous. For one fifteen years in, with a grown income, it stops being the binding constraint on saving.

This is the moment most people miss. The PPF absorbs a fixed maximum each year regardless of what you now earn, so as income rises the surplus has to go somewhere, and by default it goes into a savings account and then into spending.

• Fund the PPF to the limit if the lock-in suits you, and treat that as your floor.
• Route the surplus above it somewhere with a matching horizon, rather than letting it accumulate idle.
• Revisit at every increment, because the gap between your capacity and the ceiling widens each year.

The same logic applies to the provident fund deduction on a salary slip, which we set out on our page for salaried employees.

List the things a household actually spends large sums on. A child's admission. A house. A wedding. A medical situation. A business opportunity. Almost none of them arrive at the moment a long-dated account matures.

That is the practical gap. A PPF is superb at what it does and useless for a goal that arrives at 48, because the money is simply not available then. Something has to cover that middle stretch, and it has to be reachable without dismantling the retirement floor.

The PPF also cannot be increased beyond its ceiling in a year when you happen to have more, which is the other half of the same limitation. A bonus, an arrear, a maturity: none of them can be pushed into the PPF beyond the annual limit, so a household relying only on it has no home for windfalls either.

A SIP fills that role, with the caveat that flexibility is also its danger. Money you can reach is money you can talk yourself into reaching for. If that is a risk for you, be honest about it up front; that self-knowledge is worth more than any product comparison.

The split we see working is unglamorous and it holds up over decades.

The PPF and the provident fund together form the floor, funded steadily and never touched. That floor is what lets everything else be invested with a longer view, because it removes the fear of arriving at sixty with nothing certain.

Above the floor, the monthly surplus goes into a SIP with a horizon that matches the goal, and the emergency buffer sits separately in something reachable the same day. Nothing here requires closing a PPF or moving an existing balance, and we would advise against both.

If you are weighing this against a recurring deposit as well, our page on SIP versus RD covers that comparison, and if you would like the split worked out against your actual numbers rather than in the abstract, get in touch.