FINBIZTOOLS
PPF Calculator
Project PPF balances using an annual contribution and explicit deposit timing.
Private by design · Inputs and downloads stay in your browser
7.1% is an editable illustrative assumption; verify the current quarterly notification before production. Rate changes and withdrawals are not modeled. Projection length does not determine the legal account maturity date.
How it works
Enter a constant annual contribution, projection length, assumed interest rate and opening balance. Choose one deposit on or before 5 April, or on or before 5 March, for each projected financial year. The model estimates full financial years and annual interest credits.
Methodology
With opening balance B, annual deposit C and annual interest rate r, annual interest = B × r + C × r × eligible months / 12. April timing uses 12 eligible months; March timing uses 1. Closing balance = B + C + interest, and becomes the next year’s opening balance. The scheme’s monthly lowest-balance convention is simplified to these two explicit deposit patterns.
Example
At an assumed 7.1%, a ₹1,50,000 contribution made on/before 5 April with no opening balance earns ₹10,650 over that full financial year. The same deposit on/before 5 March earns ₹887.50 in this unrounded projection. The account provider may round credits differently.
Rules and limitations
The included contribution range is ₹500 to ₹1,50,000 per financial year in multiples of ₹50. Deposits to linked minor accounts can affect the overall cap. A projection period is not a legal maturity determination: the scheme specifies 15 years from the end of the account-opening financial year, with qualifying extensions. Actual dates, partial first year, changing quarterly rates, withdrawals and account status are excluded.
Rule and rate sources
National Savings Institute: PPF Scheme and Department of Economic Affairs: quarterly small-savings notifications. The default 7.1% is an illustrative editable assumption requiring current-quarter verification before production, not a guarantee for the projection period.
Frequently asked questions
Is the default interest rate guaranteed for 15 years?
No. It is an editable constant-rate assumption; the notified PPF rate can change by quarter.
Does selecting 15 years determine my maturity date?
No. Actual maturity depends on the account-opening financial year and applicable extensions.
Why does deposit timing matter?
Interest eligibility is based on the monthly balance convention. An early-April deposit gets more eligible months than an early-March deposit in the same financial year.
Related tools
Disclaimer
This calculator provides an estimate based on the assumptions entered and does not guarantee investment returns. Results are informational, not financial, lending, tax or legal advice. Verify important decisions with a qualified professional. See our Disclaimer.