Savings

Link copied!

PPF Calculator

This Public Provident Fund calculator projects your maturity value across the lock-in. Adjust any input below and your results update instantly.

Your details

Adjust the inputs below and your results update instantly.

Deposit as one yearly lump sum

Off spreads it across 12 monthly instalments.

Annual contribution (₹)*

≈ ₹1.50 L

Total deposited each financial year, capped by law at ₹1,50,000, with a minimum of ₹500 to keep the account active.

₹500₹1.5L

e.g. ₹1,50,000 a year

Tenure (years)*

PPF locks in for 15 years, extendable only in 5-year blocks after that, not any arbitrary tenure.

1540

e.g. 15 years

Interest rate (% p.a.)*

Set quarterly by the Ministry of Finance: currently 7.1%, unchanged since April 2020 (verified July 2026). Adjust to stress-test a rate change.

6%9%

e.g. 7.1% (current rate)

These are example numbers. Edit any input on the left to see your own.

Your PPF could grow to

₹39.45 L

1.8x your total contribution

Total contributed

₹22.50 L

Interest earned

₹16.95 L

Balance vs. contributed

PPF balanceAmount contributed

Year-by-year breakdown

"% is interest" shows how much of that year’s balance is compounded interest rather than your own contributions.

YearPPF balanceAmount contributedStatus

1₹1.56 L₹1.50 L

1.0x contributed

4% is interest

3₹5.01 L₹4.50 L

1.1x contributed

10% is interest

5₹8.98 L₹7.50 L

1.2x contributed

16% is interest

7₹13.52 L₹10.50 L

1.3x contributed

22% is interest

9₹18.74 L₹13.50 L

1.4x contributed

28% is interest

11₹24.72 L₹16.50 L

1.5x contributed

33% is interest

13₹31.58 L₹19.50 L

1.6x contributed

38% is interest

15₹39.45 L₹22.50 L

1.8x contributed

43% is interest

Compare scenarios

See how your deposit pattern or a 5-year extension changes your maturity value.

Your plan

Monthly · 15y

₹39.45 L

Maturity value

Baseline

Yearly lump sum instead

15y · same total

₹40.68 L

Maturity value

+₹1.24 L

Extend +5 years

20y total

₹64.56 L

Maturity value

+₹25.11 L

Worked example, using your numbers

A step-by-step walkthrough of how your inputs become your maturity value.

Step 1 · Monthly rate

Your 7.1% annual rate converts to a monthly rate of

0.592%

Step 2 · Total contributed

Contributing ₹1.50 L/year for 15 years, you put in a total of

₹22.50 L

Step 3 · Maturity value

Compounding annually at 7.1%, your PPF grows to

₹39.45 L

✓

Of your final balance, 43% (₹16.95 L) is compounded interest, entirely tax-free.

Personalised insights

What your numbers reveal, and what changing them would do.

43% of your maturity value is interest

₹22.50 L contributed grows to ₹39.45 L, of which ₹16.95 L is compounded interest.

Switching to a yearly lump sum would add ₹1.24 L

Paying the full year's contribution by 5 April instead of spreading it monthly earns interest on the whole amount from month one.

Extending by 5 years adds ₹25.11 L

Staying invested for 20 years instead of 15 grows your corpus to ₹64.56 L.

You're already contributing the maximum allowed

Your ₹1,50,000 contribution already claims the full ₹1,50,000 annual cap.

How this is calculated

Every step of the math behind your result, shown in the open.

Monthly rate from the annual rate

r = annual PPF interest rate, r_m = monthly rate used for each month's interest calculation

PPF interest compounds using this monthly rate, even though it's only credited to your balance once a year.

Example: 7.1% ÷ 12 → 0.592% monthly rate

Interest, computed monthly but credited yearly

Balance_m = balance after that month's deposit (if any), Year Interest = the sum credited once at year-end

Each month's interest is based on the balance at that point: a lump sum sitting there all year earns interest every month; a fresh monthly deposit only earns interest from the month it lands.

Example: Year 1: 12 months of interest at 0.592%/mo on a growing balance → credited once at year-end

Maturity value

Total Contributed = sum of every year's contribution, Total Interest = sum of every year's credited interest, Maturity = final balance at the end of your tenure

Your final PPF balance is simply everything you put in, plus every year's compounded interest on top.

Example: ₹22.50 L contributed + ₹16.95 L interest → ₹39.45 L

Assumptions

Deposits are assumed to land by the 5th of the relevant month (or 5 April, for the yearly lump sum). Depositing later reduces actual interest earned below this estimate.
The interest rate is held constant across your full tenure. In reality, the Ministry of Finance can revise it every quarter.
Partial withdrawals and loans against the balance (available from year 3 and year 7 respectively) aren't modeled. This projects an account with no withdrawals.
Figures are indicative, not financial advice.

Understanding PPF

The concept, the motivation, and what to watch out for.

A government-backed account with its own compounding quirk

PPF — the PPF full form is Public Provident Fund — pays a quarterly-revised interest rate, backed by the government, with a mandatory 15-year lock-in. What most calculators skip: interest is worked out every month on that month's lowest balance, but only actually credited to your account once a year. So exactly when in the year you deposit changes how much interest you actually earn.

This calculator models that distinction directly: compare depositing monthly against paying the full year's amount in one lump sum, and see the real difference it makes to your maturity value.

Timing your deposit matters

A lump sum paid by 5 April earns a full year's interest on the entire amount; monthly instalments only earn interest on each portion from its own deposit month onward.

Extensions come in fixed blocks

After the initial 15 years, you can't choose any tenure you like: PPF only extends in blocks of 5 years, with or without further contributions.

The rate isn't locked in for 15 years

PPF's interest rate is reviewed and can change every quarter by the government. This projection uses today's rate held constant; your actual maturity value will differ if rates move over the term.

Did you know?

A few facts behind PPF and how it compounds.

7.1%

The current rate has held for six years

PPF's interest rate has stayed at 7.1% since April 2020, even though it's reviewed and could change every single quarter.

5th

Depositing after the 5th can cost you a month's interest

Interest is based on the lowest balance between the 5th and the last day of each month; miss the 5th, and that deposit doesn't start earning until the following month.

EEE

One of the few investments taxed nowhere at all

Contribution, interest, and maturity amount are all exempt from tax: a rare "triple exemption" status very few other instruments in India offer.

5-yr blocks

You can't extend PPF by just any number of years

Once your initial 15-year term ends, extensions only come in fixed 5-year blocks; there's no option to extend by, say, 2 or 7 years.

60%

PPF withdrawal rules still apply after extension

If you extend your account with fresh contributions, the PPF withdrawal rules cap you at 60% of the balance at the start of that 5-year block. That's not the full amount, and only once a year.

1968

The PPF full form hasn't changed since 1968

The scheme, and its PPF full form — Public Provident Fund — date back to 1968, launched by the National Savings Institute under the Ministry of Finance. Rates and rules have been revised many times since; the name never has.

Frequently asked questions

Straight answers to the questions we hear most about PPF.

What is the PPF full form?

The PPF full form is Public Provident Fund, a government-backed, long-term savings scheme with a 15-year lock-in and a quarterly-revised, tax-free interest rate.

Does it matter if I deposit monthly or as one yearly lump sum?

Yes. A lump sum paid by 5 April earns a full year's interest on the whole amount, while monthly instalments only earn interest on each portion starting from its own deposit month. For the same total annual contribution, a yearly lump sum always ends up with a larger maturity value.

What are the minimum and maximum I can deposit each year?

At least ₹500 a year to keep the account active, and no more than ₹1,50,000; deposits beyond that cap don't earn interest or a Section 80C deduction.

What are the PPF withdrawal rules before maturity?

Partial withdrawals are allowed from the 7th year onward, capped at the lower of 50% of the balance at the end of the 4th preceding year or 50% of the balance at the end of the previous year, once per financial year. Loans against your balance are available separately, between the 3rd and 6th year. The full balance itself stays locked until maturity, aside from a short list of premature-closure exceptions (life-threatening illness, higher education) that also cut the account's interest rate by 1%.

What happens after the 15-year lock-in ends?

You can withdraw everything and close the account, or extend in blocks of 5 years, either continuing to contribute, or leaving the balance to keep earning interest without any further deposits.

Is PPF interest and maturity amount taxable?

No. PPF has "EEE" status: your contribution qualifies for a Section 80C deduction (old regime only), the interest earned every year is tax-free, and the maturity amount is fully exempt too.

Does it matter if I open my PPF account at a post office or a bank?

No. PPF is a single national scheme: the interest rate, 15-year lock-in, contribution limits, and withdrawal rules are identical whether the account sits at a post office or a bank. A post office PPF calculator and this one compute exactly the same numbers off the same rules — the account's location doesn't change the maturity value.

Why does the interest rate change every quarter?

The Ministry of Finance reviews small savings scheme rates every quarter, benchmarked against government bond yields. PPF's rate has stayed at 7.1% since April 2020 despite these reviews, one of its longer stretches of stability.