R&D Tax Credit: What Is the R&D Tax Credit in Belgium?

What Is the R&D Tax Credit in Belgium?

The R&D tax credit in Belgium refers to a set of fiscal measures implemented by the federal government to encourage companies to invest in research and development. Unlike regional subsidies that represent direct funding, the R&D tax credit works through taxation by reducing the tax burden of companies that employ researchers or generate income from their innovations.

These measures are federal, meaning they apply equally across all three Belgian regions (Brussels, Flanders and Wallonia). They complement regional subsidies and can be combined with them, subject to compliance with state aid cumulation rules.

For technology companies like KERN-IT and its clients, the R&D tax credit represents a significant financial lever that can reduce the effective cost of development teams by 25% to 40%, directly impacting competitiveness and capacity for innovation investment.

The Two Pillars of the Belgian R&D Tax Credit

The Belgian system rests on two main mechanisms, each targeting a different aspect of the R&D value chain.

Partial Exemption of Withholding Tax

This is the most widely used and most impactful measure for technology companies. It allows employers to be exempted from remitting a portion of the withholding tax retained on their researchers' salaries. Specifically:

• Researchers with a master's or doctoral degree: 80% exemption of withholding tax retained on their remuneration. For a gross salary generating 15,000 euros in annual withholding tax, the employer can retain 12,000 euros.
• Researchers with a bachelor's degree: also 80% exemption, under certain conditions related to the nature of research activities.
• Conditions: researchers must be assigned to fundamental research, industrial research or experimental development projects as defined by European regulations. The company must notify its R&D projects to the Federal Science Policy Office (BELSPO).

Innovation Income Deduction (IID)

The innovation income deduction allows companies to deduct 85% of the net income generated by certain intellectual property rights from their taxable base:

• Patents: income from licenses, royalties and patent transfers.
• Copyright-protected software: income generated by internally developed software protected by copyright. This is particularly relevant for software development companies.
• Plant variety certificates, orphan drugs: other types of intellectual property are also covered.

The effective tax rate on innovation income thus drops to approximately 3.75% instead of the standard 25% rate, representing a considerable tax advantage for companies commercializing their own software solutions.

Conditions and Obligations

Applying the R&D tax credit is subject to strict conditions:

• BELSPO notification: the company must notify its R&D projects and research personnel to the Federal Science Policy Office. This notification must be made in advance or within prescribed deadlines.
• Qualifying R&D activities: activities must correspond to the OECD Frascati Manual definitions: fundamental research, industrial research or experimental development. Routine software development does not qualify.
• Qualified personnel: researchers benefiting from the exemption must hold a recognized degree (master's, doctorate, bachelor's as applicable) and be effectively assigned to R&D activities.
• Documentation: the company must maintain detailed documentation of its R&D projects, including objectives, methodology, results and personnel allocation.

Concrete Example

A Brussels-based company with 20 employees, a KERN-IT client, develops a SaaS supply chain management platform integrating AI optimization algorithms. It employs 6 developers, of whom 4 hold a master's degree in computer science and are assigned to experimental development activities.

The annual gross salaries of the 4 researchers total 280,000 euros, generating approximately 90,000 euros in withholding tax. Thanks to the 80% exemption, the company retains 72,000 euros per year that it does not have to remit to the tax authorities. Over 3 years of development, this represents savings of 216,000 euros.

In parallel, the SaaS platform generates annual license revenues of 200,000 euros. Thanks to the innovation income deduction, 85% of these revenues (after deducting development costs) are exempt from corporate tax. The tax on this income drops from approximately 50,000 euros to approximately 7,500 euros, a saving of 42,500 euros per year.

In total, R&D tax benefits represent over 100,000 euros per year for this company, an amount that can be reinvested in innovation and development of new features, including engaging KERN-IT for complementary modules.

Implementation

1. R&D activity identification: analyze ongoing projects and identify those matching the Frascati Manual R&D definitions. Note: standard software development (without technological uncertainty) does not qualify.
2. Personnel qualification: verify that team members assigned to these projects hold the required degrees and that their R&D assignment is documented.
3. BELSPO notification: notify R&D projects and research personnel to the Federal Science Policy Office within prescribed deadlines.
4. Tracking setup: establish a time tracking system to document the time each researcher spends on each R&D project.
5. Tax filing: integrate tax benefits into the corporate tax return with the help of an accountant specializing in R&D taxation.
6. Documentation retention: archive project documentation (objectives, methodology, results, technological uncertainties overcome) in case of tax audit.

Cumulation with Regional Subsidies

The R&D tax credit can be combined with regional subsidies (Innoviris, VLAIO, cheques-entreprises), but the state aid ceilings defined by European regulations must be respected. In practice, a company can receive an Innoviris or VLAIO subsidy to fund an R&D project and simultaneously apply the withholding tax exemption on the salaries of researchers involved, provided the cumulation does not exceed the maximum authorized aid intensities.

It is recommended to consult an R&D tax specialist to optimize the combination of aid and avoid any compliance risk.

Conclusion

The R&D tax credit is a powerful but underutilized fiscal lever for Belgian technology SMEs. Many companies developing innovative software do not know they could benefit from these tax advantages, or wrongly believe that only large companies are eligible. In reality, any Belgian company employing qualified developers working on projects with technological uncertainty can potentially benefit. Combined with regional subsidies, the R&D tax credit can reduce the net cost of R&D very significantly, making ambitious innovation investments much more accessible.