PPF Calculator

How to use PPF Calculator

1. Enter the amount you plan to deposit each year and check the current limit with your bank or post office.
2. Enter the interest rate currently announced for the scheme. The prefilled number is an example, not the current rate.
3. Choose whether you deposit at the start or the end of each year, and how many 5-year extension blocks to include.
4. Read the final balance, total deposited and interest, and use the year-wise table to see how growth builds up.

How the PPF model works

A Public Provident Fund is a long-term, government-backed savings scheme with a 15-year lock-in that can be extended in blocks of 5 years. This calculator models it as yearly compounding. If you deposit at the start of a year, that year’s interest is (opening balance + deposit) x r. If you deposit at the end, the interest is opening balance x r and the deposit is added afterwards. The closing balance is opening + deposit + interest, and the process repeats for each year.

Because the rate is announced by the government and may change, the only honest way to use a calculator is to enter a rate and ask what happens if it stayed there. Try a few nearby rates to see how sensitive the result is.

Worked example

Deposit 100,000 a year for 15 years at an example 7 percent, with each deposit made at the start of the year. The first year ends with 100,000 x 1.07 = 107,000, the second with (107,000 + 100,000) x 1.07 = 221,490, and so on. After 15 years the balance is 2,688,805.36 on total deposits of 1,500,000, so interest is 1,188,805.36. If the same deposits are made at the end of each year instead, the balance is 2,512,902.20, which shows how much an earlier deposit date can matter over a long horizon.

Tips and limits

The lock-in, partial withdrawal rules, loan facility and tax treatment are scheme rules that change over time, so confirm them with an official source before planning around them. Treat PPF as a long-term, lower-risk part of a plan rather than a way to chase high returns.

• Rates are examples until you replace them with the current announced rate.
• Deposit limits are not hard-coded; check the current figure and stay within it.
• Extension blocks can be modelled with or without continued deposits.
• This is an estimate only and not financial advice.
• The calculation runs entirely in your browser; nothing is uploaded.

Why use this ppf calculator tool

• 15 years plus extensions. Pick no extension or up to four 5-year blocks, with the option to keep depositing or only earn interest during extensions.
• Start versus end of year. See how depositing early in the year changes the result, because the whole deposit earns interest for one more year.
• Year-wise table. Opening balance, deposit, interest and closing balance for every year of the plan.
• You control every number. Rate and deposit are inputs, with reminders to check current rules rather than hard-coded values.

Frequently asked questions

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