PPF Calculator Guide: How Much Will You Get After 15 Years?

What a PPF account is

PPF stands for Public Provident Fund. It is a savings scheme run by the Government of India, and you can open an account at most banks and at the post office. The account runs for 15 years. You put money in, the government pays you interest, and at the end you take out the whole amount.

Three things make it popular. The first is safety, because the scheme is backed by the government. The second is the tax treatment. Under the old tax regime your deposit qualifies for a deduction under Section 80C, the interest you earn is tax-free, and the money you get at maturity is tax-free too. People call this EEE, which means exempt at all three stages. The third is discipline. Because withdrawals are limited, the money tends to stay put and grow.

The trade-off is that your money is not freely available. You cannot dip into it whenever you like, and the interest rate is not fixed for life. Both of these matter for how you plan.

The rules you need to know

Before we get to the maths, here are the basic rules. They are simple, but each one affects your result.

• Minimum deposit is ₹500 a year, and the maximum is ₹1,50,000 in a financial year. You can pay in one lump sum or in up to 12 instalments.
• The term is 15 years. After that you can extend in blocks of 5 years, with or without making fresh deposits.
• Interest is added once a year, on 31 March, but it is calculated every month.
• One person can hold only one PPF account in their own name. You can open a separate account for a minor child, though the combined yearly limit still applies.
• Partial withdrawals are allowed from the seventh financial year, up to a limit. A loan against the balance is possible in the early years.
• Non-resident Indians cannot open a new PPF account, and the government revises the rules from time to time.

Check the latest details with your bank or the post office before you open an account, since schemes get updated. The rules above are the long-standing basics.

How PPF interest is really calculated

This is the part most people get wrong. PPF interest is not simply the rate multiplied by your balance on 31 March. The government announces the rate every quarter. The interest for each month is worked out on the lowest balance in your account between the 5th and the last day of that month. Then all twelve months are added up and credited at the end of the financial year.

In practice, this gives one clear rule. If you want a deposit to earn interest for a particular month, it must be in the account before the 5th of that month. A deposit made on the 6th earns nothing for that month, because the lowest balance during the window did not include it.

For someone depositing the whole ₹1.5 lakh in one go, the best moment is the first week of April, before the 5th. Then the full amount earns interest for all twelve months. Wait until March and that same deposit earns almost nothing for the year, even though you still get the tax benefit.

Our calculator assumes you deposit the full year's amount at the start of the year. That is the best case and the closest to paying before the 5th each month. If you deposit later in the year, your real maturity will be a little lower.

What ₹1.5 lakh a year turns into

Now for the numbers. We use 7.1%, which was the PPF rate in recent quarters, and assume you deposit ₹1,50,000 at the start of every year. The government can change the rate, so see these as examples and not promises.

• After 15 years: about ₹40,68,209. You paid in ₹22,50,000, so about ₹18,18,209 is interest.
• After 20 years: about ₹66,58,288. You paid in ₹30,00,000.
• After 25 years: about ₹1,03,08,015. You paid in ₹37,50,000, and the interest is more than the money you put in.
• After 30 years: about ₹1,54,50,911.

Look at the jump between years. Going from 15 to 20 years adds about ₹26 lakh, while the five extra deposits add only ₹7.5 lakh. The rest comes from compounding. Time is doing the heavy lifting.

Smaller deposits scale in the same way. Paying in ₹50,000 a year for 15 years gives about ₹13.56 lakh, and ₹1,00,000 a year gives about ₹27.12 lakh. A monthly instalment of ₹12,500 adds up to the full ₹1.5 lakh a year, which is an easy habit to set up if you get a salary each month.

What happens if the rate changes

The PPF rate is reviewed every quarter. It has stayed at 7.1% for a long stretch recently, but it was above 8% a decade ago and it can move again. Because of this, no one can tell you exactly what you will have in 15 years.

To see how much it matters, take the same ₹1,50,000 a year for 15 years. At 6.5% you would end with about ₹38.63 lakh. At 7.1% it is about ₹40.68 lakh. At 8% it is about ₹43.99 lakh. A swing of one and a half percentage points moves the final figure by more than ₹5 lakh.

The sensible way to plan is to run your numbers at a lower rate than today, for example 6.5%, and treat anything above that as a bonus. That way you do not rely on a rate the government can change.

Tax benefits, and one honest caveat

The tax-free interest and tax-free maturity are the headline benefits. If you are in the 30% tax bracket, a tax-free 7.1% is worth roughly 10.3% in a taxable account, because you would need that much before tax to be left with 7.1% after tax. That is a strong reason to use PPF for the safe part of your savings. Compare it with the interest on a bank FD, which is taxed every year.

The deduction on your deposit is a second benefit, but only under the old tax regime. If you have chosen the new regime, you do not get the Section 80C deduction for PPF deposits. At the highest bracket, the old regime gives a saving of about ₹46,800 on ₹1.5 lakh, including cess. Whether the old regime is better for you depends on your whole tax picture, so work out both before you decide.

Even if you do not get the deduction, the tax-free growth is still valuable. It is a good fit for a long-term, low-risk goal like retirement or a child's higher education.

Getting your money out before 15 years

A PPF is built for the long term, but life does not always cooperate, so it helps to know the exits.

From the seventh financial year you can make a partial withdrawal. The limit is up to 50% of the balance at the end of the fourth year before the year of withdrawal, or at the end of the previous year, whichever is lower. You can do this once a year.

In the early years, between the third and the sixth, you can take a loan against your PPF at a small interest rate above the PPF rate. This is useful for a short cash gap, because your deposit keeps earning while you borrow.

Closing the account fully before 15 years is allowed only after five years and only in specific situations such as serious illness, higher education or a change of residence status. Even then, the interest rate is cut by one percentage point. So the real answer is to keep the account going and use partial withdrawals if you need to.

After 15 years: extend or withdraw?

At maturity you have three choices. You can withdraw the whole amount, tax-free. You can extend the account for five more years without making fresh deposits, and the balance keeps earning the PPF rate. Or you can extend with deposits, and keep adding up to the yearly limit.

Extending without deposits is the most flexible. You can take out a limited amount each year, and the rest continues to grow tax-free. Extending with deposits makes sense if you are still far from your goal and like the tax treatment.

To keep the option of extending with deposits, you need to submit the extension form within a year of maturity. Many people forget this and end up in a half-way state, so put a reminder in your calendar well before the 15th year ends.

PPF compared with an FD, an RD or the market

PPF is one tool among many. A bank fixed deposit gives you more flexibility and shorter terms, but the interest is taxable. A recurring deposit suits monthly saving over a few years. Market-linked investments can grow faster over long periods, but their value goes up and down and you can lose money.

A balanced approach many families use is to treat PPF as the safe base. It covers goals you cannot afford to miss, such as retirement income or a child's education, and it comes with no market risk. You can then take more risk with other money, if that suits your situation and you understand the risks.

If you want to see how regular saving builds up over time more generally, the compound interest calculator lets you try any rate and period.

Mistakes that cost PPF savers money

Most PPF problems are small slips with dates and rules. Here are the ones to avoid.

• Depositing after the 5th of the month and losing that month's interest on the amount.
• Leaving the whole yearly deposit until March. The tax benefit is the same, but the interest for the year is almost nil.
• Missing the minimum deposit of ₹500 in a year. The account becomes inactive, and you must pay the missed minimum plus a small penalty for each year to revive it.
• Depositing more than ₹1.5 lakh in a year. The extra amount earns no interest and is not eligible for the deduction.
• Forgetting to submit the extension form after 15 years.
• Opening several accounts. The rules allow only one in your own name, and extra accounts can be closed with the interest cut.

A simple habit solves most of this. Set up a standing instruction for the first days of April, or a monthly transfer before the 5th, and let it run.

Questions people ask

Sources and further reading

• National Savings Institute – Public Provident Fund scheme
• India Post – Savings schemes including PPF
• Income Tax Department of India – Deductions and tax rules