PPF Calculator: How to Calculate Your Public Provident Fund Maturity Value
You put ₹1.5 lakh into your PPF account every year because everyone tells you it’s the safest thing you can do with your money. But if someone asked you right now — “what will that actually be worth in 15 years?” — could you answer? Most people can’t, because PPF doesn’t work like a simple […]
Sanjay Singh
Published on 22 Sept 2026 • Updated on 22 Sept 2026
You put ₹1.5 lakh into your PPF account every year because everyone tells you it’s the safest thing you can do with your money. But if someone asked you right now — “what will that actually be worth in 15 years?” — could you answer?
Most people can’t, because PPF doesn’t work like a simple fixed deposit. The interest compounds annually, but it’s calculated monthly on whichever balance is lowest between the 5th and the last day of that month. Miss the 5th of April with your yearly deposit, and you quietly lose a full month of interest — every single year, for 15 years straight.
A PPF Calculator removes all that guesswork. Enter your yearly contribution and tenure, and you instantly see your maturity amount, total interest earned, and year-by-year growth — with zero manual compounding.
What Is PPF (Public Provident Fund)?
PPF is a long-term, government-backed savings scheme available at banks and post offices across India. It’s built for one purpose: encouraging disciplined, long-term saving with a return that’s fully guaranteed by the Government of India — no market risk, no fluctuation based on stock or bond performance.
The current PPF interest rate is 7.1% per annum (as of the July–September 2026 quarter). The government reviews and announces this rate every quarter, and it’s been steady at 7.1% for nine quarters in a row — though the next revision is due around 30 September 2026, so it’s worth checking the latest rate before you calculate.
How Is PPF Interest Calculated?
This is the part that trips people up. PPF interest is:
- Calculated monthly, on the lowest balance in your account between the 5th and the last day of that month
- Credited annually, at the end of the financial year (31st March)
That “lowest balance between the 5th and last day” rule matters more than it sounds. If you deposit your yearly contribution on the 1st of April, it earns interest for the entire year. Deposit it on the 10th of April instead, and that month earns zero interest on the new amount — you’ve lost a full month, every year, until you fix the habit.
The overall compounding formula for annual contributions works out to:
A = P × [((1 + r)ⁿ − 1) / r] × (1 + r)
Where P is your annual contribution, r is the annual interest rate, and n is the number of years — assuming you deposit at the start of each year (the “annuity due” version of the compound interest formula, which rewards early deposits).
Worked Example
Say you contribute the maximum allowed — ₹1,50,000 every year, deposited on 1st April — for the full 15-year tenure, at 7.1% p.a.
| Detail | Value |
|---|---|
| Annual contribution | ₹1,50,000 |
| Tenure | 15 years |
| Interest rate | 7.1% p.a. |
| Total amount invested | ₹22,50,000 |
| Interest earned | ≈ ₹18,18,209 |
| Maturity amount | ≈ ₹40,68,209 |
Look at that interest number again — you invested ₹22.5 lakh, and PPF alone handed you back more than ₹18 lakh in interest, completely tax-free. That’s the quiet power of a 15-year compounding horizon.
PPF Contribution Limits and Tenure
- Minimum deposit: ₹500 per financial year
- Maximum deposit: ₹1,50,000 per financial year (deposits beyond this don’t earn interest or get tax benefit)
- Tenure: 15 years, starting from the end of the financial year in which the account was opened
- Extension: After 15 years, you can extend the account in blocks of 5 years — with or without making further contributions
You can deposit as a lump sum or in up to 12 instalments a year — but for the best returns, depositing the full amount before the 5th of April each year is the single easiest optimization most PPF holders miss.
Tax Benefits: The “EEE” Status
PPF is one of the few investments in India with EEE (Exempt-Exempt-Exempt) tax treatment:
- Exempt on investment: Your annual contribution qualifies for a deduction under Section 80C, up to ₹1,50,000.
- Exempt on interest: The interest you earn every year is completely tax-free.
- Exempt on maturity: The final amount you withdraw at maturity is also tax-free.
Very few instruments in India offer tax-free status at all three stages — this is what makes PPF a core part of most long-term, tax-efficient financial plans, even with a relatively modest interest rate.
Partial Withdrawal and Loan Facility
PPF isn’t fully locked for 15 years:
- Loan against PPF: Available from the 3rd to the 6th financial year, up to 25% of the balance at the end of the 2nd year before the loan application.
- Partial withdrawal: Allowed from the 7th financial year onward, up to 50% of the balance at the end of the 4th year preceding the withdrawal (or the immediately preceding year, whichever is lower).
So while PPF is built for the long haul, it isn’t a “lock it and forget it for 15 years with zero access” product.
PPF vs. FD vs. SIP: Where Does It Fit?
- PPF: Best for long-term, tax-free, zero-risk savings — ideal alongside your retirement planning. Fifteen-year commitment, but government-guaranteed.
- FD (Fixed Deposit): Best for shorter, flexible tenures with guaranteed (but taxable) returns. Compare using the FD Calculator.
- SIP (Systematic Investment Plan): Best if you can tolerate market risk for potentially higher long-term growth through mutual funds. See the SIP Calculator to compare.
Most well-built portfolios actually use all three — PPF for the tax-free safety net, FD for near-term goals, and SIP for long-term wealth growth.
Try the Numrexo PPF Calculator
Rather than manually tracking monthly balances and annual compounding, use the Numrexo PPF Calculator. Just enter:
- Yearly contribution amount
- Current interest rate
- Investment tenure (including extensions, if any)
You’ll instantly see your total investment, total interest earned, and final maturity amount — calculated entirely in your browser, with nothing stored or sent anywhere.
Frequently Asked Questions
What is the current PPF interest rate?
7.1% per annum, as set by the government for the current quarter. This rate is revised every quarter, so always check the latest rate before calculating.
What is the maximum amount I can invest in PPF per year?
₹1,50,000 per financial year. Any amount deposited beyond this doesn’t earn interest or qualify for tax deduction.
Is PPF interest taxable?
No. PPF has EEE status — the contribution, the interest earned, and the maturity amount are all completely tax-free.
Can I withdraw money from PPF before 15 years?
Partial withdrawal is allowed from the 7th financial year onward, and a loan facility is available between the 3rd and 6th year.
What happens after the 15-year PPF tenure ends?
You can withdraw the entire maturity amount, or extend the account in blocks of 5 years, with or without making further contributions.
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Now let me build the professional image for it, matching the FD one’s style so both look consistent as a series.
