- Luxembourg introduced Bill Number eighty-seven eighty-two to overhaul stock option taxation for innovative start-ups.
- The new regime defers all taxes until the actual sale of shares, avoiding charges at grant or exercise.
- Qualifying gains will be taxed at approximately twelve percent as extraordinary income starting in the twenty twenty-seven tax year.
(LUXEMBOURG) – Luxembourg is overhauling how employee stock options are taxed, offering a start-up regime with no tax at grant or exercise and a deferred tax event at sale, while also codifying existing option rules for non-startups.
Bill No. 8782, filed with the Luxembourg Parliament on 1 July 2026, would create a preferential regime for stock options issued by young innovative companies. The same bill would also place the general tax treatment of employee stock options into Luxembourg income tax law. That matters because the current framework has relied in part on administrative practice.
Under the proposed start-up regime, a qualifying employee would not be taxed when the option is granted. Tax would also not arise when the option is exercised. The tax point would move to the eventual sale of the shares acquired through the option.
Free toolCSPA Age-Out Calculator OnlineAt sale, the gain would be treated as extraordinary income. The bill describes the charge as one quarter of the employee’s global tax rate. In many cases, advisers describe the effective rate as below 12%.
Luxembourg’s ordinary rules would remain relevant outside that start-up regime. Freely tradable options would be taxed at grant. Non-tradable options would be taxed at exercise.
Shares subject to a lock-up period may still receive a valuation reduction under the ordinary rules. The bill preserves a 5% annual discount, capped at 20%. That discount affects the taxable basis rather than creating a separate tax rate.
⚠️ Tax is deferred to the sale of shares under the start-up regime; if the company never sells, taxes may be avoided under this regime.
| Regime Feature | Tax Timing | Tax Rate / Basis | Eligibility | Notes |
|---|---|---|---|---|
| Start-up regime | Tax on sale | Gain treated as extraordinary income; taxed at one quarter of the employee’s global tax rate, often described as below 12% | Qualifying employees of qualifying young innovative companies | No tax at grant or exercise; employer must opt in |
| Ordinary stock option rules | Freely tradable options taxed at grant; non-tradable options taxed at exercise | Employment income valuation rules apply; lock-up shares may receive a 5% annual discount, capped at 20% | Applies outside the start-up regime | Bill No. 8782 codifies existing treatment |
Qualification for the start-up regime is narrow. A company must be incorporated for less than 10 years, employ fewer than 150 employees, and have turnover or a balance sheet total not above EUR 30 million. Each test must be met.
Research activity is central to the definition. The company must devote at least 15% of operating expenses to research and development in at least one of the last three financial years. It must also have at least two full-time equivalent employees working on research and development.
| Criterion | Threshold |
|---|---|
| Age of company | <10 years since incorporation |
| Headcount | <150 employees |
| Size | Turnover or balance sheet total of EUR 30 million or less |
| R&D spending | At least 15% of operating expenses |
| R&D staffing | At least two full-time equivalent employees |
Several businesses are excluded even if they meet the financial tests. Listed companies cannot use the regime. Nor can businesses in regulated or professional services sectors such as real estate, law, audit, and accounting firms.
Employee eligibility is limited as well. The regime applies to workers receiving salary income from the employer. Anyone holding more than 25% of the employer’s, or relevant group’s, capital, voting rights, or profit rights is excluded.
Plan design also matters. Options must be non-transferable and tied to real equity, not cash-settled or phantom awards. The employer must opt in on a plan-by-plan basis and make an electronic filing before 1 March of the year following the grant year.
✅ If advising a Luxembourg-based start-up, confirm plan opt-in status and ensure electronic filing before 1 March of the grant year.
The bill was filed by the Luxembourg Government on 1 July 2026. If enacted in its current form, the new regime is expected to apply from the 2027 tax year. Existing plans and options granted earlier would remain under the current rules.
That timing may matter for hiring and compensation planning. Start-ups recruiting across borders often compete with larger groups on cash salary. Deferring tax until a sale may make equity awards easier to accept, especially for foreign hires and remote workers considering Luxembourg-based employers.
Cash flow sits at the center of the reform. Under the ordinary model, tax can arise before an employee has cash from a sale. Under the start-up regime, tax generally follows liquidity. That shift may reduce the risk of a paper gain creating a real tax bill.
The bill also replaces uncertainty left after the withdrawal of the 2017 administrative circular with a statutory framework. A law usually gives employers and employees firmer footing than an administrative position. Tax treatment still may depend on the final text, plan terms, and each employee’s facts.
Companies that expect to use start-up stock options in Luxembourg should review headcount, ownership, research spending, and filing procedures well before the 2027 tax year. Plans already in place should be checked separately, since older grants would stay under the current rules.
This article provides general information only and does not constitute legal or tax advice.
Tax treatment depends on individual circumstances and ongoing regulatory changes.
