The 30% ruling runs for a maximum of five years from the start date stated in your Belastingdienst decision (beschikking). Any earlier period you spent in the Netherlands — including a previous spell under the ruling — is normally deducted from those five years, so a returning expat rarely receives a fresh full term.
The rate you receive depends on when your ruling started. For 2024, 2025 and 2026, the maximum tax-free allowance is the full 30% of your gross salary. From 1 January 2027 that maximum drops to a flat 27% for the remainder of your term — but only if your ruling started on or after 1 January 2024. If your ruling began before 1 January 2024, transitional law applies and you keep the full 30% for your entire five-year period.
There is no longer a tapering schedule. An earlier proposal (the "30-20-10" rule) would have reduced the allowance in stages across the five years, but it was withdrawn before it ever took effect. Your rate is flat for your whole remaining term — 30% or 27% depending on your start date — not stepped down year by year.
The salary cap (WNT norm)
The tax-free allowance only applies up to a maximum salary, known as the WNT norm (formerly the "Balkenende norm"). For 2026 this cap is €262,000, which means the largest possible tax-free amount is €78,600 per year. Salary above the cap does not attract the tax-free portion. A transitional exception for people who started before 1 January 2023 has ended, and the cap now applies to everyone from 1 January 2026.