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.
Frequently Asked Questions
Is the warrant scheme still available in 2027?
No new warrant plans after 1 January 2021. Existing plans grandfathered until vest. New stock-comp grants follow standard RSU/option wage taxation at full FMV.
When is the capital gain exempt in Luxembourg?
For private individuals owning less than 10% of the company and holding the shares for more than 6 months. Under 6 months, capital gain is taxed at half the marginal rate.
How are RSUs taxed?
Full FMV at vest is treated as wage benefit, taxed at your marginal rate (up to 45.78% incl solidarity). Any subsequent appreciation falls under the 6-month capital gain rule.
Does the employer withhold tax on options?
Yes. Employer withholds at marginal wage tax rate at the time of exercise (options) or vesting (RSU). Mismatch with actual liability is reconciled through the annual return.
Is this tool private?
Yes. All calculations stay in your browser. Stock grant data is never sent, stored, or shared.