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PPF Calculator

Enter what you deposit and the current PPF rate. The calculator follows the scheme's own rules — interest on the lowest balance after the 5th of each month, credited once a year — so the figure lines up with your passbook rather than a generic compound-interest estimate.

I deposit

₹500 to ₹1,50,000 a year

Set by the Government each quarter — use the current rate

Enter your deposit and the current PPF rate to see the maturity value.

How to use this tool

  1. Choose whether you deposit once a year or every month.
  2. Enter the amount. The scheme accepts ₹500 to ₹1,50,000 in a financial year.
  3. Enter the current PPF interest rate. The Government announces it every quarter; your bank, the post office or the National Savings Institute website lists the rate in force.
  4. Pick the investment period: the full 15 years, or 15 years plus one or more 5-year extensions.
  5. Read the maturity value and the year-by-year table.

Formula and method

Yearly deposits made by 5 April

Balanceₖ = (Balanceₖ₋₁ + D) × (1 + r)
D
— deposit for the year
r
— annual PPF rate as a decimal

A deposit made before the 5th of April earns interest for all twelve months of that financial year, and the year's interest is added on 31 March.

Monthly deposits

Year's interest = Σ (balance after each month's deposit) × r ÷ 12

Interest is worked out each month on the lowest balance between the 5th and the end of the month, then credited together at year end. A deposit made in April earns 12 months of interest, one made in March earns only one.

Worked examples

₹1,50,000 every year for 15 years at 7.1%

  1. Year 1: (0 + 1,50,000) × 1.071 = ₹1,60,650
  2. Year 2: (1,60,650 + 1,50,000) × 1.071 = ₹3,32,706
  3. …continuing to year 15
  4. Total deposited: 1,50,000 × 15 = ₹22,50,000

A maturity value of about ₹40,68,209, of which ₹18,18,209 is interest — all of it tax-free.

₹12,500 a month instead of ₹1,50,000 each April

  1. Same ₹1,50,000 a year, same 7.1%, same 15 years
  2. Later months' deposits earn fewer months of interest

About ₹39,44,599 — roughly ₹1.2 lakh less, purely from the timing of deposits.

Notes and limitations

  • 7.1% is used in the examples for illustration only. The rate is reviewed every quarter and applies to the whole balance, so a future rate change affects money already in the account.
  • The figures assume every deposit is made on or before the 5th of the month. Money deposited after the 5th earns no interest for that month.
  • Deposits above ₹1,50,000 in a financial year earn no interest and are refunded. An account with less than ₹500 in a year becomes discontinued until revived with a penalty.
  • Tax treatment follows the scheme's exempt–exempt–exempt status. From 1 April 2026, under the Income-tax Act, 2025, deposits qualify for the ₹1.5 lakh deduction under Section 123 (formerly Section 80C) in the old tax regime only, and interest and maturity are exempt under Schedule II (formerly Section 10(11)) in either regime.

Frequently asked questions

What is the current PPF interest rate?

It is set by the Ministry of Finance each quarter, so this page does not state it. Check your bank, the post office or the National Savings Institute website for the rate in force and enter it above.

When should I deposit in PPF to earn the most interest?

Before 5 April. A deposit made by then earns interest for the entire financial year. Spreading the same amount across the year, or depositing after the 5th of a month, earns less.

Can I extend my PPF account after 15 years?

Yes, in blocks of five years, as many times as you like. You must apply within one year of maturity if you want to keep making deposits; otherwise the account continues earning interest without new deposits.

Can I withdraw from PPF before maturity?

Partial withdrawals are allowed from the seventh financial year, limited to a share of the balance, and loans against the account are available earlier. Full premature closure is allowed only in specific cases, such as serious illness or higher education, and carries a small interest penalty.

Is PPF better than an FD?

PPF interest is tax-free and usually higher than an FD's post-tax return, but the money is locked in for 15 years. FDs are taxable but far more flexible. Many people use PPF for long-term tax-free savings and FDs for money they might need sooner.

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