Luxembourg start-up tax credit: where the bill stands
The Luxembourg start-up tax credit is listed among the Ministry of Finance's 2026 novelties. The text that carries it, bill 8526, was still in committee on 22 September 2026.
Is the Luxembourg start-up tax credit in force?
The Luxembourg start-up tax credit rests on bill 8526, tabled on 4 April 2025 and still going through parliament on 22 September 2026, so that no official source consulted presents it as applicable and the Luxembourg direct tax administration publishes no explanatory page, no form and no circular on the subject.
The confusion is understandable. The Ministry of Finance listed the measure among its "Nouveautés 2026", published in December 2025, with the two parameters the whole market now quotes: 20% of the investment, capped at EUR 100,000 a year, to mobilise private savings in favour of innovative SMEs. A government announcement describes a legislative intention; it does not create an entitlement.
The gap between the two is easy to measure. A tax credit that actually applies leaves administrative traces: a dedicated entry in the tax administration's A-to-Z index, a box on the return, usually a circular. On 22 September 2026, the administration's page on what is new for tax year 2026 covers the self-employed tax credit and the CO2 tax credit, not a start-up tax credit.
What this changes for an investor is concrete. We regularly see investment timetables built around a tax saving announced in the specialist press. Money put in today falls under the schemes already in force, set out below; it will only qualify for the new credit if the text finally voted says so, which no official source allows anyone to state.
| Item | Status | Source |
|---|---|---|
| Government announcement (20%, EUR 100,000 a year) | Published | Ministry of Finance, "Nouveautés 2026", December 2025 |
| Underlying text | Bill 8526, still in procedure | Chamber of Deputies, parliamentary file 8526 |
| Law published in the official journal | Not found | Search on legilux.public.lu on 22 September 2026 |
| Administrative page, form or circular | None | Luxembourg direct tax administration, A-to-Z index |
How the start-up tax credit would work: 20% of the investment, EUR 100,000 a year
The start-up tax credit planned in Luxembourg would amount to 20% of the capital invested, capped at EUR 100,000 a year, and would be reserved for individual taxpayers investing out of their private wealth.
The cap calls for a clarification the sources consulted do not give. The Ministry of Finance writes "20% of the investment, capped at EUR 100,000 a year", without saying whether the cap applies to the credit obtained or to the investment that produces it. The difference between the two readings is a factor of five: EUR 100,000 of credit would imply EUR 500,000 invested. We therefore leave the point open and flag it as the first thing to read in the text once voted.
Calling it a tax credit rather than a deduction already shapes how attractive the scheme is: a credit is set against the tax due, whereas a special expense merely reduces taxable income. The intended mechanics — carrying an excess forward, any refund, the order in which it interacts with other credits — appear in none of the official sources we were able to read.
The beneficiary is an individual. The sources consulted indicate that only individual taxpayers could claim this credit, the investment being unable to form part of the net invested assets of a business. Money put in through a Luxembourg financial participation company would fall outside the scheme, which points the holding towards the taxpayer's private estate.
| Parameter | Announced value | Caveat |
|---|---|---|
| Rate | 20% of the capital invested | Text not voted as at 22 September 2026 |
| Annual cap | EUR 100,000 a year | Whether the cap bites on the credit or on the investment is not settled by the sources consulted |
| Beneficiary | Individual taxpayer | Investment excluded from the net invested assets of a business |
| Target horizon | From incorporation to the start-up's fifth year of existence | Objective set out in the parliamentary file |
Which young innovative companies would qualify for the start-up tax credit?
An entity qualifying for the Luxembourg start-up tax credit would be a small company established in Luxembourg for less than five years, with at least two full-time equivalent employees and fewer than fifty in total.
The size test comes with a financial one: the entity's turnover or balance sheet total would not exceed EUR 10 million at the close of the tax year for which the credit is claimed. The registered office condition rules out investing in a young foreign company from the outset, however close to the Grand Duchy it may be.
Innovation is the heart of the scheme, and it is quantified. The entity would have to devote at least 15% of its expenditure to research and development; for a newly incorporated entity, that threshold would be measured over the first year of activity. The same 15% rate already serves, under the young innovative enterprise aid scheme, to characterise an innovative company.
Some activities are expressly excluded: law firms and real estate companies are among the exclusions in the text as tabled. Conversely, amendments have widened the scope to companies active in social and environmental fields or belonging to the social and solidarity economy.
| Test | Announced condition |
|---|---|
| Registered office | In Luxembourg |
| Age | Less than five years of existence |
| Headcount | At least two full-time equivalent employees, fewer than fifty in total |
| Financial size | Turnover or balance sheet total not exceeding EUR 10 million at the close of the tax year concerned |
| Innovation | At least 15% of expenditure devoted to research and development, measured over the first year for a newly incorporated entity |
| Exclusions | Law firms and real estate companies, among others |
What conditions would the investor have to meet?
An investor claiming the Luxembourg start-up tax credit would have to put in at least EUR 10,000 per entity and per tax year, without exceeding 30% of the start-up's capital, and hold the securities for at least three uninterrupted years.
The EUR 10,000 floor is assessed per investor and per entity, over the tax year during which the credit is claimed. The 30% ceiling reserves the measure for the minority investor: the scheme targets the outsider who funds the company, not the shareholder consolidating a position.
Two personal conditions complete the structure. The investor should be neither the founder of the start-up nor linked to it by a direct employment relationship. The shares should also be held directly and fully paid up at the close of the tax year of acquisition, which rules out holding through an intermediary as well as partly paid subscriptions.
The holding period is the condition easiest to miss, because it is counted differently from what people assume. The three uninterrupted years would run from the end of the tax year for which the credit is claimed, not from the subscription date, with exceptions provided for in the text. A December investment and a January investment therefore do not share the same lock-up horizon.
| Condition | Announced content |
|---|---|
| Investor status | Individual taxpayer, neither founder of the start-up nor linked to it by a direct employment relationship |
| Minimum investment | At least EUR 10,000 per investor, per entity and per tax year |
| Maximum stake | No more than 30% of the start-up's capital |
| Nature of the securities | Held directly and fully paid up at the close of the tax year of acquisition |
| Holding period | At least three uninterrupted years from the end of the tax year for which the credit is claimed, subject to the exceptions in the text |
Where does bill 8526 stand on 22 September 2026?
Bill 8526 creating the Luxembourg start-up tax credit was tabled on 4 April 2025 and was still in committee work in the summer of 2026, after the Council of State's opinion and the adoption of amendments.
The public timeline can be read in the parliamentary file. The joint ten-point action plan for the development of start-ups and scale-ups, presented on 24 March 2025 by the Minister of the Economy and the Minister of Finance, announced a bill creating a tax credit for an individual investing in a young innovative company. The bill was tabled on 4 April 2025, and the measure was presented to the Finance Committee on 20 May 2025.
Examination dragged on over the most sensitive points: equal treatment between taxpayers, investment thresholds and the perimeter of eligible companies. An opinion dated 26 May 2026 sits in the file, and committee meetings devoted to tax bills were held in June and July 2026. The Minister of Finance indicated that an evaluation could be carried out a year after the measure takes effect, should the Chamber wish it.
None of the searches run on 22 September 2026 on legilux.public.lu, on impotsdirects.public.lu and on the government's pages turned up a published law creating this tax credit. We draw the only prudent conclusion: the scheme remains a bill, and its first year of application will depend on the text voted. Following this file is part of the ordinary work of a Luxembourg tax advisor.
| Date | Step |
|---|---|
| 24 March 2025 | Joint ten-point action plan for start-ups and scale-ups, announcing the future tax credit |
| 4 April 2025 | Bill 8526 tabled in the Chamber of Deputies |
| 20 May 2025 | Measure presented to the members of the Finance Committee |
| December 2025 | Measure listed in the Ministry of Finance's "Nouveautés 2026" |
| 26 May 2026 | Opinion added to the parliamentary file |
| June and July 2026 | Committee examination continues |
| 22 September 2026 | No law published in the official journal found |
What already funds a young innovative company in Luxembourg?
Three official schemes already fund young innovative companies in Luxembourg without waiting for the start-up tax credit: the tax credit for venture capital investment, the young innovative enterprise aid and the aid for creating spin-offs from public research.
The tax credit for venture capital investment rests on a certificate, and the order of operations is mandatory: applications for venture capital investment certificates must be filed with the Minister of Finance before the capital contribution is made, the ministers responsible for Finance and for the Economy then issuing the certificates by joint decision, in proportion to the contribution in share capital and, where applicable, share premium. The recipient company must be a Luxembourg capital company, resident and fully taxable. The total nominal value of the certificates issued for a given financing operation may be neither below EUR 100,000 nor above EUR 5,000,000.
The young innovative enterprise aid is aimed at small companies established in Luxembourg, registered for less than five years and which have not taken over another company's business. Innovative status is certified by Luxinnovation, research and development expenditure having to represent at least 15% of total operating expenditure over at least one of the three preceding years; public co-financing can reach 70% of the projected financing need, over three years at most, without exceeding EUR 1 million per company. The aid for creating spin-offs from public research is capped at EUR 200,000 in capital grant, with private financing of at least 20% of the financing need and fully paid-up share capital of at least EUR 15,000.
These schemes do not replace the announced tax credit: both grants benefit the company, whereas the credit would benefit the investor. The timing, however, is the same in all three cases, and that is the mistake we see most often: the funding round is closed, and only then is the file put to the administration. A company formation in Luxembourg that builds these deadlines into the incorporation timetable avoids forfeiting a scheme for purely procedural reasons.
| Scheme | Beneficiary | Main parameter |
|---|---|---|
| Tax credit for venture capital investment | The certificate holder | Certificates of EUR 100,000 to EUR 5,000,000 per financing operation, application before the contribution is made |
| Young innovative enterprise aid | The young company | Up to 70% of the projected financing need over three years, capped at EUR 1 million per company |
| Aid for creating spin-offs from public research | The spin-off | Capital grant of EUR 200,000 at most, private financing of at least 20% |
| Start-up tax credit | The individual investor | Announced at 20% capped at EUR 100,000 a year, text not voted |
What can be prepared now for the start-up tax credit?
An investor targeting the future Luxembourg start-up tax credit can, from today, document the investment as if the announced conditions applied: amount paid, share of the capital, full payment and subscription date.
Four documents are enough to rebuild a file two or three years later: the capital increase resolution, the certificate releasing the funds, a capitalisation table dated before and after the operation, and proof of payment. That documentation costs nothing at the time of the investment; it becomes slow to reconstruct after several successive rounds.
The 30% capital threshold deserves particular attention, because it moves without the investor doing anything: a stake that came in at 22% can cross it when the company buys back shares or a co-shareholder exits. We regularly see capitalisation tables kept in a shared spreadsheet and never reconciled with the shareholders' register; the discrepancy surfaces on the day a stake has to be evidenced at a given date.
For founders, the anticipation bears on the entity tests: at least two full-time equivalent employees, fewer than fifty in total, and accounts capable of isolating research and development expenditure. That last point is usually missing from the files we take over. LuxGAAP accounting does not spontaneously separate research costs from other operating expenses: the analytical split is decided when the financial year opens, not when it closes.
Sources and verification
Written for Financial Services Luxembourg and reviewed before publication by Mickaël LOC, licensed accountant (authorisation 10077274). Sources were verified on 22 September 2026, the date on which every rate, threshold, date and procedural step cited in this article was cross-checked against an official public source.
The sources consulted are as follows. The Luxembourg government portal and the Ministry of Finance, for the "Nouveautés 2026" page published in December 2025 (tax credit of 20% of the investment capped at EUR 100,000 a year, innovation, size and age criteria, minimum investment and holding conditions) and for the communiqué of 24 March 2025 presenting the ten-point action plan. The Chamber of Deputies, for parliamentary file 8526 (tabling on 4 April 2025, presentation to the Finance Committee on 20 May 2025, conditions relating to the entity and to the investor, sector exclusions, extension of the scope to social and environmental fields and to the social and solidarity economy, opinion of 26 May 2026, committee work in June and July 2026). The Luxembourg direct tax administration, for its page on the tax credit for venture capital investment (application before the contribution is made, joint decision of the Ministers of Finance and of the Economy, resident fully taxable capital company, certificates of EUR 100,000 to EUR 5,000,000) and for its page on what is new for tax year 2026. The guichet.public.lu portal, for its pages on aid for young innovative enterprises (registered for less than five years, Luxinnovation certificate, 15% threshold, co-financing up to 70% over three years, EUR 1 million cap) and on aid for creating spin-offs from public research (EUR 200,000 at most, private financing of at least 20%, paid-up capital of at least EUR 15,000). Finally legilux.public.lu, searched on 22 September 2026 without turning up a law creating this credit.
Four points could not be verified against the primary text and are therefore not asserted here. First, consolidated texts and parliamentary documents in PDF form are blocked by the network proxy of the drafting environment: sources were read through indexed extracts, and no article number of the Luxembourg income tax law is cited. Second, what the EUR 100,000 cap bites on — the credit obtained or the investment made — is settled by none of the sources consulted. Third, how the credit would be set against tax, whether an excess could be carried forward and in what order it would interact with other credits are documented nowhere. Finally, the first year of application remains unknown while the text is unvoted. Each of these points can be checked on chd.lu, file 8526, on legilux.public.lu and on impotsdirects.public.lu.
This article sets out the state of the law at the date of publication and is not personalised advice: a scheme still going through parliament can be amended, delayed or abandoned before the vote, and the conditions described here are those of the bill as tabled and amended, not those of a law in force. Report an error to contact@financialservices.lu: corrections are dated in the article.
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