Luxembourg Stock Options & Warrants Tax 2027 Calculator
Estimate Luxembourg tax on employee stock options and warrants for 2026-27 — taxable benefit at vest, the favorable warrant scheme reform (now mostly abolished but transitional), and capital gain treatment at sale.
Warrant Scheme: Mostly Closed
The LU warrant scheme — historically taxed at 30% of fair value at grant rather than 100% as wages — was effectively closed for new grants from 1 January 2021 except for grandfathered plans. New stock-comp grants now follow standard wage taxation (RSU model). The 30% rule remains for legacy plans still vesting. The change was driven by EU state-aid concerns over the favorable treatment and aligned LU with broader EU norms.
Capital Gain on Sale: Six-Month Rule
Private individuals holding shares for more than 6 months and owning less than 10% of the issuing company qualify for full capital gain exemption on sale. Under 6 months, the gain is taxed at half the marginal rate. This makes timing of the post-vesting sale critical — vesting and immediate sale incurs maximum tax, while holding past 6 months wipes out the capital gain portion entirely.
RSU Treatment vs Stock Options
RSUs (Restricted Stock Units) generate a wage benefit equal to the full FMV at vesting — same treatment as a cash bonus. Stock options generate a benefit only on exercise, calculated as exercise gain (FMV at exercise minus strike price). The latter offers more deferral but locks the employee into bearing exercise cost and the post-exercise market risk.
Reporting and Withholding
Employer withholds tax at the marginal rate on the benefit at vest (RSU) or exercise (options). The annual tax return reconciles — recipients with non-LU sourced compensation, foreign brokerage, or partial cross-border situations should file an income tax declaration (Form 100) to claim any over-withholding or apportion benefit across countries.
Sources: impotsdirects.public.lu, ccss.lu, statec.gouvernement.lu. Last updated: May 2026.