Accounting for Tech Startups in Luxembourg: Specificities and Obligations
Mickaël LOC
Tech-Specialist Accountant ·
Accounting for Tech Startups in Luxembourg: Specificities and Obligations
Tech startups in Luxembourg benefit from the IP Box regime, which exempts 80% of income from eligible intellectual property, bringing the effective tax rate to around 4.99%. To benefit from it, development costs must be properly capitalised under LuxGAAP's PCN (Luxembourg standard chart of accounts), eligible IP income must be tracked, and employee share plans (BSPCE, stock options) must be managed in accordance with IFRS 2.
Capitalisation of development costs
Under the Luxembourg PCN (standard chart of accounts), development costs can be capitalised as intangible assets if the project is technically feasible, if the company intends to complete it, and if sufficient resources are available. This option can significantly improve the results of the first years of activity.
IP Box regime: 80% exemption
Income from eligible intellectual property (patents, protected software, utility models) benefits from an 80% exemption on IRC (corporate income tax), bringing the effective tax rate to around 4.99%. IP Box qualification requires a precise analysis of eligible rights and tracking of corresponding income.
BSPCE and employee share plans
Incentive plans (stock options, BSPCE, phantom shares) require specific accounting treatment: valuation of options granted, recognition as personnel expenses under IFRS 2, and monitoring of the vesting schedule.
Are you running a tech startup in Luxembourg? Our specialist accountants master the subtleties of tech accounting: IP Box, R&D capitalisation, and share plans.
Frequently Asked Questions
How should software development costs be recognised in Luxembourg?
Under the Luxembourg PCN, development costs may be capitalised as intangible assets if the project is technically feasible, if the company intends to complete it and if sufficient resources are available. Research costs must be expensed.
What is the IP Box regime in Luxembourg?
The IP Box regime exempts 80% of net income from eligible intellectual property assets (patents, protected software, utility models). The effective corporate income tax rate on this income is therefore around 4.99%, making it one of the most attractive regimes in Europe for technology companies.
How should BSPCEs be accounted for in Luxembourg?
Founder share warrants (BSPCE) are equity instruments granting the right to subscribe to shares at a preferential price. Under IFRS 2, they must be measured at the grant date and recognised as personnel expenses over the vesting period.
Are R&D expenses tax-deductible?
Yes, R&D expenses are tax-deductible in Luxembourg. Furthermore, IP assets developed internally through these R&D expenses can then benefit from the IP Box regime, creating a double tax advantage (deduction of expenses + exemption of IP income).
Must a tech startup adopt IFRS?
IFRS standards are only mandatory for companies listed on a regulated market. Non-listed Luxembourg startups prepare their accounts under the Luxembourg PCN. Some institutional investors may nevertheless require IFRS reporting under a shareholders' agreement.


