Wet DBA Risk Self-Assessment 2026: How to Check Your ZZP Engagements

A Wet DBA risk self-assessment is now a standard quarterly exercise for any company in the Netherlands that engages zzp’ers. Full enforcement resumed on 1 January 2025, and from 1 January 2026 the Belastingdienst can impose serious-fault penalties (vergrijpboetes) on top of the back-tax assessments (naheffingsaanslagen) that have been available since the end of the moratorium. Contracts that once passed muster because a model agreement sat in the file are no longer safe — the tax authority looks at how the work is actually performed.

What is the Wet DBA and why does it matter in 2026?

The law itself has not changed since 2016 — what changed is the willingness to enforce it. Between 2016 and 2024, the Belastingdienst applied a de facto moratorium because implementation problems (particularly around model agreements) made prosecutions difficult. That period is over. From 1 January 2025, the tax authority can impose corrective obligations and payroll-tax assessments where it finds false self-employment; from 1 January 2026 it can layer on vergrijpboetes for deliberate or seriously negligent misclassification. Default penalties (verzuimboetes) remain suspended through 2026 as a transitional measure.

Model agreements have also lost most of their protective value. The Belastingdienst has not approved new modelovereenkomsten since 1 January 2025; existing approved templates remain valid until end of 2029, but only if the working reality matches the template. The audits we have supported since January 2025 typically open with a company visit, not paperwork — inspectors ask which zzp’ers are on-site that week and observe how they work.

How does the Belastingdienst assess employment relationships?

In practice, the assessment breaks into three clusters. Substance of control (how much the client directs the work), embedding (whether the worker looks and feels like an employee inside the organisation), and entrepreneurial reality (whether the worker actually behaves as a business — multiple clients, own tools, own commercial risk). We regularly see hirers with ‘compliant’ model contracts fail the substance test because rota systems, shared laptops and mandatory team meetings tell a different story.

Who is at highest risk of misclassification?

Risk factor	Explanation	2026 enforcement priority
Long-tenure exclusive zzp’ers	Same client >12 months, no other clients	High — first target of Belastingdienst reviews
ZZP in de zorg (healthcare)	Rota-based work with mandatory training	High — sector-specific audit programme in force
Uber-style platform work	Post-Deliveroo case law extends to gig platforms	High — active litigation and enforcement
Zzp’ers earning below €38/hour	Rechtsvermoeden (legal presumption) of employment	Medium — expected to become statutory 2026-27
Contractors on fixed weekly rota	Set days, set hours, integrated in team roster	Medium-high — clear supervision indicator
Interim managers on short assignments	Well-established as entrepreneurs	Lower — usually pass the substance test
Genuine consultants with multiple clients	Own website, invoices, deliverables-based fees	Lowest — the model still works

A practical Wet DBA self-assessment checklist

The following ten-point checklist mirrors the substance questions Access Financial’s Dutch desk uses in client reviews. Score each engagement from 0 to 2 on each point — 0 clearly employed, 1 mixed, 2 clearly self-employed. Any engagement scoring under 12 out of 20 should be re-papered or converted to payroll before the next Belastingdienst risk sweep.

1. Does the zzp’er serve at least two other paying clients in the same calendar quarter? Genuine self-employment produces multiple concurrent revenue streams.
2. Does the zzp’er set their own daily or hourly rate, and can they refuse work they judge unprofitable? If the rate is fixed by the client, the substance test weakens.
3. Does the zzp’er use their own equipment, laptop and software licences? Shared client hardware is a strong integration signal.
4. Can the zzp’er substitute another qualified worker in their place? True entrepreneurs can delegate; employees cannot.
5. Are the working hours defined by output rather than by a shift or rota? Weekly rotas point to supervision and integration.
6. Does the zzp’er absorb commercial risk if the deliverable fails? Genuine entrepreneurs carry warranty and rework risk.
7. Is the zzp’er excluded from internal meetings, all-hands, HR processes and performance reviews? Inclusion is a marker of employment.
8. Is remuneration paid against invoices for deliverables, not against hours worked to a fixed monthly figure? Time-and-materials billing without ceilings looks like a salary.
9. Does the zzp’er hold themselves out to the market — website, LinkedIn as freelancer, KvK registration, VAT number? Passive KvK registration alone is not enough.
10. Is the total engagement length under twelve months, or genuinely project-scoped with a defined end? Rolling extensions past one year materially raise reclassification risk.

What happens if you fail an audit in 2026?

Consequence	Details	In force from
Retroactive assessments (naheffingsaanslag)	Payroll tax + social contributions for up to 5 years back	1 January 2025
Corrective obligations	Order to reclassify the worker on payroll going forward	1 January 2025
Serious-fault penalty (vergrijpboete)	Up to 100% of the tax assessment for deliberate misclassification	1 January 2026
Default penalty (verzuimboete)	Suspended through 2026 as transitional relief	Not yet — expected 2027
Reputational and audit exposure	Belastingdienst can share findings with SZW inspectorate	Ongoing

The financial exposure is meaningful even without the penalty layer. For a zzp’er engaged five days a week at €600/day for 24 months, back-payroll tax and social contributions alone can exceed €65,000 per contractor. Add a vergrijpboete of up to 100% for deliberate cases and the number doubles.

When will the Wet DBA be replaced?

The Wet DBA is expected to be replaced by the Zelfstandigenwet, but not in 2026. On 6 March 2026, the government announced it was scrapping the clarification part (verduidelijkingsdeel) of the VBAR bill, which had drawn heavy criticism from the market. The rechtsvermoeden — a legal presumption that a worker paid under €38/hour is an employee unless proved otherwise — is being progressed as separate legislation and must be published in the Staatsblad by 31 August 2026. The full Zelfstandigenwet is now expected in 2027 at the earliest.

Practically, none of this changes the enforcement stance for 2026. The Belastingdienst continues to apply the Deliveroo test, continues to audit high-risk sectors, and continues to accept only working-reality evidence — not paperwork — as decisive. Companies waiting for a new law before adjusting their contracting mix are the ones most likely to be caught by a mid-year audit.

Summary

• The Wet DBA is fully enforced in the Netherlands from 1 January 2025 and gains serious-fault penalties from 1 January 2026.
• Model agreements alone no longer protect either side — the Belastingdienst applies the nine Deliveroo criteria to the working reality.
• Highest-risk engagements: exclusive long-tenure zzp’ers, healthcare rota workers, sub-€38/hour contractors and integrated team members on rotas.
• Retroactive assessments run back up to five years; the 2026 vergrijpboete can add up to 100% of the assessment for deliberate misclassification.
• Access Financial can run the ten-point self-assessment across a client’s zzp book and propose a compliant restructuring — payrolling, secondment, EOR or genuine SP engagement — where reclassification risk is high.

FAQ

What is a Wet DBA in 2026?

What is a Wet DBA — the Wet deregulering beoordeling arbeidsrelaties is the 2016 Dutch statute that governs the boundary between genuine self-employment and employment for tax purposes. It replaced the older VAR declaration and made clients and contractors jointly responsible for correct classification. From 1 January 2025 the Belastingdienst enforces it in full; from 1 January 2026 it can impose serious-fault penalties on top of back-tax assessments.

Who is at risk under the Wet DBA?

Who is at risk under Wet DBA is any client engaging zzp’ers under conditions that resemble employment. Highest-risk cases are exclusive long-tenure contractors on rota-based work, contractors sub-€38/hour, integrated team members with client-issued equipment, and healthcare zzp’ers. Contractors serving multiple clients on deliverables-based fees with their own tools and commercial risk are lower-risk but not automatically safe.

How does the Belastingdienst assess employment relationships?

How the Belastingdienst assesses employment relationships is via a holistic test based on the nine Deliveroo criteria set by the Dutch Supreme Court in March 2023. Inspectors consider supervision, integration, personal work obligation, remuneration method, working hours, commercial risk, entrepreneurial conduct, contract duration and whether the worker holds themselves out as a business. No single factor is decisive.

When will VBAR replace the Wet DBA?

When VBAR will replace the Wet DBA is now unclear. The government scrapped the clarification part of the VBAR bill on 6 March 2026. The rechtsvermoeden — the €38/hour presumption of employment — is being progressed as separate legislation for publication by 31 August 2026. The full Zelfstandigenwet is expected in 2027 at the earliest; Wet DBA remains the operative framework through 2026.

Related reading: WAADI, Dutch Country Guide