How the GPF interest calculation works
GPF interest is calculated on the closing balance at the end of each month for the entire financial year, then credited as a lump sum on 31 March. The rate is notified quarterly by the Ministry of Finance (Department of Economic Affairs) — currently 7.1% p.a. for Q1 FY 2026-27, identical to the PPF rate.
For projection purposes, this calculator uses quarterly compounding with contributions spread evenly across four quarters — the same model used by the official GPF interest schedule.
The accumulation formula for each quarter is:
Balance(after quarter) = Balance(start of quarter) × (1 + r/4) + (Annual Contribution / 4)
where r is the annual rate as a decimal (7.1% → 0.071).
GPF vs EPF vs PPF — quick comparison
| Feature | GPF | EPF | PPF |
|---|---|---|---|
| Who can open | Govt employees only | Private/PSU (EPF Act) | Any Indian resident |
| Employee contribution | Mandatory (≥ 6% of emoluments) | 12% of basic+DA | Voluntary (₹500 – ₹1.5L/yr) |
| Employer contribution | None (retirement via NPS/OPS) | 12% (split EPF + EPS) | None |
| Interest rate | 7.1% (Q1 FY 2026-27) | 8.25% (FY 2025-26) | 7.1% (Q1 FY 2026-27) |
| Compounding | Quarterly | Annual | Annual |
| Maturity | On retirement/exit/death | On retirement (age 58+) | 15 years (extendable) |
| Tax treatment | EEE | EEE | EEE |
| Section 80C | Yes (old regime) | Yes (old regime) | Yes (old regime) |
For EPF accumulation, use the EPF Calculator. For PPF, use the PPF Calculator.
Partial withdrawals and advances
GPF Rules 1960 provide two types of withdrawals:
-
Non-refundable advance (permanent withdrawal): Permitted for house purchase/construction, education, medical treatment, marriage/funeral expenses, purchase of consumer durables. You do not repay these; they reduce your corpus permanently.
-
Refundable advance (temporary withdrawal): A loan from your own GPF balance, repaid over a fixed schedule through salary deductions.
Eligibility for non-refundable advances generally requires at least 10 years of service or being within 10 years of superannuation. The maximum amounts depend on account balance and purpose — refer to Rule 15 and the Ministry of Finance instructions for current limits.
Tax treatment — EEE status confirmed
GPF contributions, interest, and withdrawal are fully exempt:
- Contributions: Deductible under Section 80C (old regime, up to ₹1.5L aggregate)
- Interest: Exempt under Section 10(11) — no TDS
- Maturity/withdrawal: Exempt under Section 10(11)
The new tax regime does not allow Section 80C deductions. If you are in the new regime and your only 80C investment is GPF, the deduction advantage disappears — though the interest and maturity exemption under Section 10(11) remain.
Bridges
- PPF Calculator — the civilian equivalent of GPF, open to all Indians
- 80C Deduction Calculator — quantify the tax saving from your GPF subscription under the old regime
- EPF Calculator — for private-sector employees covered under EPF Act 1952