Sri Lanka EPF & ETF Calculator — Retirement Projection
See what your Employees' Provident Fund and Employees' Trust Fund will be worth at retirement. Uses the statutory 8% + 12% EPF and 3%ETF rates, plus the CBSL's latest-declared interest. No signup, sources cited below.
How it works
The Employees' Provident Fund (EPF) is Sri Lanka's mandatory retirement savings scheme for private-sector employees, governed by the Employees' Provident Fund Act No. 15 of 1958 and administered by the Central Bank of Sri Lanka. The Employees' Trust Fund (ETF), governed by ETF Act No. 46 of 1980, sits alongside it as an additional employer-only contribution. The calculator projects both accounts year-by-year using three inputs that are fixed by law and three that you supply:
- Fixed by statute: 8% of monthly basic earnings is withheld from your salary as your EPF contribution (EPF Act §10(1)(a)); your employer adds a minimum of 12% on top (§10(1)(b)); and a further 3% goes into ETF, paid entirely by the employer (ETF Act §16).
- Supplied by you: your current age, retirement age, current monthly basic salary, expected annual increment, the EPF and ETF interest rates you want to project against, and optionally any balance you already hold in each account.
- Each projected year:the calculator multiplies your current monthly basic by twelve to get the annual salary, applies the combined EPF and ETF contribution rates to get the year's contributions, then credits interest using the half-year convention:
interest = (opening balance + contributions ÷ 2) × rate. The closing balance is opening + contributions + interest. Your salary then grows by your specified increment for the next year. - Cross-checked by closed form. The result is verified against the future-value-of-growing-annuity formula
FV = C₀ × ((1+r)ⁿ − (1+g)ⁿ) ÷ (r − g), with a √(1+r) half-year correction. The two methods agree within about 0.1% — a useful credibility check that the year-by-year ledger is not accumulating numerical error.
The half-year convention is the standard approximation used in projection-grade EPF modelling. In practice the CBSL credits interest on the daily-weighted balance over the year, but for any plausible contribution pattern the two methods agree to within ~1% — and the half-year approach is auditable from the ledger row by row, which the daily-weighted method is not.
The interest rate field defaults to 10%, the most recent CBSL declaration (2024). Rates are not guaranteed for future years — the EPF rate has ranged between roughly 9% and 13% over the last five years. Override the default with your own conservative or optimistic assumption to see the range.
Worked examples
All figures reconcile to within 0.5% against a closed-form future-value-of-growing-annuity calculation. The fresh-graduate case is the most instructive: roughly three-quarters of the final balance is compound interest, not contributions — which is why early-career withdrawals are so costly.
Frequently asked questions
Sources & references
- Central Bank of Sri Lanka — Employees' Provident Fund Department
- Employees' Provident Fund Act No. 15 of 1958 (PDF)
- Employees' Trust Fund Board — official site
- Employees' Trust Fund Act No. 46 of 1980 (PDF)
- CBSL — EPF Department overview
Contribution rates (8% employee + 12% employer EPF, 3% employer ETF) and the recent interest-rate declarations were last cross-checked against the sources above on 2026-05-10. The page is reviewed each year after the CBSL announces a new EPF rate.
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Comments & feedback
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