WBSO Calculator — calculate your 2026 benefit
Estimate your WBSO R&D tax credit instantly with our free calculator, based on official RVO 2026 rates.
Your WBSO Results
Based on your R&D activities
Total WBSO Credit
€ 25.200
Based on € 70.000 in R&D labor costs
| R&D cost base | € 70.000 |
| Bracket 1 (36%) | € 25.200 |
| Total benefit | € 25.200 |
Traditional Advisor
- WBSO credit
- € 25.200
- Advisor fee (12.5%)
- -€ 3.150
- Net Benefit
- € 22.050
Manna
- WBSO credit
- € 25.200
- Fixed Fee
- -€ 500
- Success fee (7.5%)
- -€ 1.890
- Net Benefit
- € 22.810
You save with Manna
€ 760
That is 24% less in costs compared to traditional advisors
This is an indicative calculation based on WBSO 2026 rates. Actual amounts may differ. Consult RVO.nl for official rates.
WBSO rates 2026
The WBSO (R&D Tax Credit) provides Dutch innovative companies with a fiscal advantage on R&D labor costs. In 2026, the total WBSO budget is €1.817 billion.
- Employer first bracket: 36% on the first €380,000 R&D cost base
- Employer second bracket: 16% above €380,000
- Starter first bracket: 50% (enhanced starter rate)
- Self-employed fixed deduction: €15,551/year (min. 500 R&D hours)
- Self-employed starter bonus: additional €7,781
Use the free WBSO calculator above to instantly estimate your benefit based on official 2026 RVO rates. No sign-up required.
WBSO calculation example 2026
Quick WBSO calculation example: an employer with 4 R&D staff (8,000 R&D hours × €50/hour) has an R&D cost base of €400,000. The resulting WBSO benefit is 36% × €380,000 + 16% × €20,000 = €139,000 credited against payroll tax.
Apply for WBSO after calculating
Once you've calculated your benefit, Manna automates the full WBSO application: project analysis, S&O declaration, RVO submission and ongoing compliance — saving up to 50% of the usual consulting hours.