Sri Lanka Government Salary Increase Calculator (2025–2027)

Public Administration Circular 10/2025 revises the basic-salary scales for Sri Lanka's public service but does not pay the full increase at once. Instead it releases the increase in three legally-mandated phases. This calculator reproduces that phasing rule exactly, working only with your basic salary — allowances are out of scope.

Let C be your current (pre-revision) basic and R your revised basic from Schedule II. Your full net increase is N = R − C. Each phase pays an immediate floor of Rs 5,000 plus a growing share of the remainder above that floor:

• Phase 1 (from 1 April 2025): 5,000 + 30% × max(0, N − 5,000)
• Phase 2 (from 1 January 2026): 5,000 + 65% × max(0, N − 5,000)
• Phase 3 (from 1 January 2027): N (full increase)

The new monthly basic at each phase is C + addₖ, and the percentage realised is addₖ / N. If your net increase is at or below Rs 5,000, the floor covers it and you receive the full increase from Phase 1 — no phasing is needed.

To keep the result trustworthy, the tool computes each phase amount with two independent formulas — the floor-plus-share form above and the equivalent “remaining-gap” form addₖ = N − (1 − shareₖ) × max(0, N − 5,000) — and confirms they agree to the cent. The shares (30% / 65% / 100%), the Rs 5,000 floor, and the minimum basic of Rs 24,250 → Rs 42,775 all come from Circular 10/2025, corroborated by The Morning and cross-checked against the official Treasury calculator.

• Ministry of Public Administration — Public Administration Circular 10/2025
• General Treasury — official public-service salary calculator (2025)
• The Morning — Budget 2025: Assessing the public sector salary increment

The phasing rule and figures were last cross-checked against Circular 10/2025 and the Treasury calculator on 2026-06-21. This tool covers the basic-salary revision phasing only; for your authoritative all-in figure, use the official Treasury calculator linked above.