PPF Calculator India โ Public Provident Fund 2026
Calculate your PPF maturity value at 7.1% for FY 2025-26. Compare monthly vs annual deposit strategies, model 5-year extensions, and see your full tax savings under Section 80C. Results in lakhs and crores.
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How to Use This Calculator
PPF Maturity tab
Enter your annual deposit (up to โน1,50,000) and tenure (minimum 15 years). The calculator shows your total deposits, interest earned, maturity value, and Section 80C tax savings. Expand "More options" to adjust the interest rate if you want to model different rate scenarios.
Monthly vs Annual tab
Compare the interest earned when you deposit the same total amount as a lump-sum on April 1 versus monthly instalments. PPF interest is calculated on the minimum balance between the 5th and last day of each month, so depositing early in the year earns more interest. This tab shows the exact difference over your full tenure.
PPF with Extension tab
After the initial 15-year lock-in, PPF can be extended in 5-year blocks. Choose whether to continue making fresh deposits or let the existing balance grow with interest only. See the total value after 20 years and the benefit of extending.
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The Formula
PPF interest is compounded annually. The interest for each year is calculated on the minimum balance between the 5th and last day of each month, then credited on March 31.
For each year: Balance = Previous Balance + Annual Deposit
Interest = Balance × Rate (7.1%)
Year-End Balance = Balance + Interest
PPF Parameters FY 2025-26:
Interest rate: 7.1% per annum (compounded annually)
Minimum deposit: โน500/year
Maximum deposit: โน1,50,000/year
Lock-in period: 15 years
Extension: 5-year blocks after maturity
Monthly Interest Calculation:
Interest is calculated on minimum balance between 5th and last day of each month.
Deposit before 5th → earns interest that month.
Deposit after 5th → earns interest from next month.
Tax Treatment (EEE):
Deposit: Exempt under Section 80C (up to โน1,50,000)
Interest: Exempt (tax-free)
Maturity: Exempt (tax-free)
The key insight: depositing your full annual amount on April 1 (before the 5th) maximises interest because the entire deposit earns interest for all 12 months. Monthly deposits mean later instalments earn interest for fewer months that financial year.
Example
Priya — IT professional investing โน1,50,000/year in PPF
Priya is 28, earns โน12,00,000/year, and deposits the maximum โน1,50,000 annually in her PPF account on April 1 each year. She is in the 30% tax bracket (old regime).
Step 1: Annual deposit and tax saving
Step 2: PPF maturity after 15 years at 7.1%
Priya gets โน40.68 lakh at maturity — completely tax-free. Her โน22.50 lakh investment nearly doubled.
Step 3: If she extends for 5 more years
With the 5-year extension, Priya's PPF grows to โน66.93 lakh. The power of compounding on a larger base makes the extension period extremely productive.