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The WBSO (Research and Development Promotion Act) is the best-known R&D subsidy in the Netherlands — a tax reduction on wage costs for research and development (R&D). For 2024: 32% on the first €350,000 of R&D wage costs, 16% on the remainder. Bonus for startups: 40% in the first 3 years (within the ceiling). For self-employed entrepreneurs: fixed R&D deduction. Applications must be submitted annually to the RVO. Indispensable for R&D-intensive startups — and a ticket to the Innovation Box.
The short answer
- What: Tax reduction on wage costs for R&D work.
- 2024 rate: 32% on the first €350,000 of R&D wage costs, 16% above that.
- Startup rate: 40% on the first €350,000 (within the first 3 years of the business).
- Applications: to RVO, in advance per R&D project, at least one month before the start.
- Additional benefit: the WBSO declaration is the ticket to the Innovation Box.
What is R&D (Research and Development)?
RVO defines R&D as new technical development, aimed at software, technical products, processes, or physical events. Two categories:
- Development work: new products, production processes, software.
- Technical-scientific research: without a direct commercial purpose.
What does NOT qualify: market research, training, standard software development without technical novelty, copy-pasting of existing solutions, quality control, production.
Saskia (cleantech startup) is developing a new hydrogen generator — clearly R&D. Routine maintenance of production processes falls outside the WBSO.
Rates 2024
- Standard: 32% on the first €350,000 of R&D wage costs, 16% on amounts exceeding that.
- Startup rate (first 3 years of business, no more than 5 man-years of R&D): 40% on the first €350,000.
- Self-employed entrepreneurs: fixed amount R&D deduction (€14,046 in 2024, plus €7,023 start-up bonus for the first 3 years).
Calculation of wage cost basis: gross R&D wage × 1.3 (rounding factor for overhead). Discount is settled via payroll tax return — direct liquidity.
How do you apply for WBSO?
Application to RVO via eHerkenning:
- Project description: technical problem statement, chosen approach, novelty compared to existing knowledge.
- Estimate of R&D hours per employee.
- Period: maximum 1 year per application, submit at least 1 month before start.
- Decision within 4-6 weeks — WBSO statement issued.
- Monthly payroll tax return offsets the discount.
- Annually: report realization (R&D hours actually worked).
What do you need to document?
Tracking during the year:
- Time recording per employee per R&D project (hours per day/week).
- Progress reports: what has been resolved, what needs to be investigated.
- Result documentation: prototypes, code versions, test results.
The RVO conducts retroactive sample checks — insufficient documentation can lead to recovery.
WBSO and innovation box
A WBSO declaration is a sufficient basis for the Innovation Box (9% corporate income tax rate on innovative profit). For R&D-intensive startups: WBSO + Innovation Box together often result in an additional saving of one thousand to ten thousand euros per employee per year.
Saskia's cleantech startup with 4 R&D employees: WBSO savings ~€40,000 + innovation box on positive profit of €20,000+ = €60,000+ per year. An investment in an R&D application pays for itself quickly.
Pitfalls
- Applying too late: WBSO cannot be applied retroactively.
- Project description too vague: leads to rejection.
- Insufficient technical novelty: copy-paste work is unsuitable.
- Poor time recording: problem during random check.
- Forgot realization notification: annually before March 31.
Honest recommendation
For every company with technical R&D: applying for WBSO is almost always worthwhile — immediate tax effect and access to the Innovation Box. The first application takes 8-16 hours of your own time or €2,000 – €5,000 through a WBSO advisor. After that, the work is lighter each year. For startups in the first 3 years: extra startup rate — don't miss this opportunity. Set up proper time tracking from day 1.
For other topics: innovation box, subsidies for start-up entrepreneurs and MIT subsidy.
Frequently Asked Questions
Research and Development Promotion Act: tax reduction on wage costs for R&D work. In 2024: 32% on the first €350,000 of R&D wage costs, 16% above that. Startup rate 40% in the first 3 years. Applications to RVO.
Research and Development — new technical development of software, technical products, processes, or physical events. Excluded: market research, training, production, or quality control. The RVO determines on a project-by-project basis whether it qualifies.
Per R&D employee at the standard rate: ~€10,000 – €15,000 tax savings per year. With 4 R&D employees: €40,000 – €60,000. Plus indirect benefit via the innovation box: 9% corporate income tax instead of 19%/25.8%.
Via RVO with eHerkenning. Project description (technical problem statement, approach, novelty), estimated R&D hours, and period. At least one month before the start of the R&D work. Decision within 4-6 weeks.
In the first 3 years of a company (max. 5 man-years of R&D): 40% on the first €350,000 of R&D wage costs instead of the regular 32%. Intended to provide an extra incentive for new entrepreneurs — do not miss this opportunity in the start-up phase.
Daily time recording per employee per R&D project, progress reports (what has been resolved, what is under investigation), and result documentation (prototypes, code, test results). RVO conducts random checks — poor documentation leads to recovery.
Report the actual R&D hours worked to RVO annually before 31 March. Discrepancy with the application: correction of previously obtained discount. Failure to do so results in a refund plus a fine.
