Freelancing while employed in the Netherlands: 2026 rules

Can you freelance while employed in the Netherlands in 2026?

Yes. In 2026 you can have salary employment (loondienst) and run a side business as a self-employed freelancer (zzp). Since 1 August 2022, an employer cannot ban outside work without an objective reason, but an employment contract can still require disclosure and can restrict conflicts of interest. For tax, salary and business profit are usually reported together in Box 1.

Browse the [Knowledge Hub](/knowledge-hub) for more freelancer accounting guides. Combining loondienst and zzp work starts with the employment contract: check any side-work clause (nevenwerkzaamhedenbeding), confidentiality, and conflict-of-interest language. When an employer gives an objective reason (for example safety, health, or protecting confidential information), the employer can restrict outside work. Keep client work outside contracted working hours and use separate tools and files.

Dutch tax law also treats “entrepreneur for income tax” differently from “entrepreneur for VAT (btw)”. Registering at KvK helps you start, but the tax position depends on the facts: whether activities are in economic traffic, whether profit is expected, and whether the work is done independently. This classification determines whether profit counts as business profit (winst uit onderneming) or another type of income, and whether entrepreneur deductions apply.

Do you need to register with KvK and get a VAT number for side freelancing?

Usually yes. If you start a real business on the side, you register in the KvK Trade Register (Handelsregister). The one-time registration fee is € 85,15. After registration, you do not separately register with the Dutch Tax Administration; the KvK passes your details on. The Dutch Tax Administration then assesses whether you are an entrepreneur for VAT (btw) and issues a VAT ID and VAT number if needed.

A side business is typically registered when you provide goods or services for payment outside a private hobby context and you aim to make profit. Registering a sole proprietorship (eenmanszaak) is common for freelancers who start small. After the KvK registration, you will receive a KvK number and your details are shared with the Dutch Tax Administration.

VAT status is separate from income-tax status. The Dutch Tax Administration determines VAT entrepreneurship after reviewing whether the work is carried out independently and for consideration. If VAT applies, invoices must follow VAT rules and you file VAT returns (btw-aangifte) unless you opt into the small businesses scheme (KOR). For expense planning, see [deductible freelancer expenses](/knowledge-hub/deductible-expenses-freelancers-netherlands).

• Book a KvK registration appointment and bring a valid ID (1 document).
• Prepare a clear activity description and expected start date (YYYY-MM-DD).
• Choose a legal form (often a sole proprietorship / eenmanszaak) and a trade name.
• Pay the one-time KvK fee of € 85,15 during registration.
• Wait for the VAT letter with your VAT ID and VAT number (if VAT applies).
• Set up an administration from day 1: invoices, expenses, and bank transactions.

How are salary and freelance profits taxed together in 2026?

In 2026, salary and freelance profit usually add up in Box 1 (income from work and home). For people below AOW age, Box 1 rates are 35,75% up to € 38.883, 37,56% from € 38.883 to € 78.426, and 49,50% above € 78.426. Payroll withholding on salary is a prepayment; freelance profit is settled in the annual return and can trigger a provisional assessment.

Salary (loon) is taxed through payroll tax (loonheffing) withheld by the employer, so the net salary already includes a prepayment of Box 1 tax. Freelance profit is reported in the income tax return and can lead to extra tax due if the employer withholding was not enough for the combined income. A provisional assessment (voorlopige aanslag) can spread expected tax payments over 12 monthly instalments in the same year.

Tax credits matter when there are multiple incomes. Wage tax credit (loonheffingskorting) can be applied to only 1 income, so applying it to the “wrong” income can create a pay-back at year-end. Health insurance contributions (Zvw) also split: the employer pays a Zvw employer levy on salary, while you pay 4,85% on profit via an assessment, up to a maximum contribution income of € 79.409 in 2026.

Which freelancer deductions can you claim when you also have a job in 2026?

You can claim entrepreneur deductions only if the Dutch Tax Administration treats the activity as business profit (winst uit onderneming). The self-employed deduction (zelfstandigenaftrek) requires the 1.225-hour criterion and is € 1.200 in 2026 (tax benefit capped at 37,56%). The starter's deduction (startersaftrek) is an extra € 2.123, usable up to 3 times in the first 5 years. The SME profit exemption (mkb-winstvrijstelling) is 12,7% in 2026.

The 1.225-hour criterion is a full-year test, even if the business starts mid-year: you still need 1.225 hours in that calendar year to claim zelfstandigenaftrek. The 12,7% mkb-winstvrijstelling applies after entrepreneur deductions and does not require meeting the hour criterion. Keeping a simple hours log (date, task, minutes) is usually enough to evidence the threshold.

If the activity is not treated as a business for income tax, income can still be taxable as “other work income” (inkomsten uit overig werk). In that case you can generally deduct costs that relate to the income, but you cannot use entrepreneur schemes such as zelfstandigenaftrek. The classification is based on facts like independence, profit expectation, and participation in economic traffic.

• Zelfstandigenaftrek: € 1.200 in 2026, only if you meet 1.225 hours and are below AOW age.
• Startersaftrek: +€ 2.123 on top of zelfstandigenaftrek, max 3 times in the first 5 years.
• Mkb-winstvrijstelling: 12,7% of profit after entrepreneur deductions, no hour criterion.
• Carry-forward of unused zelfstandigenaftrek: up to 9 years if profit was too low.
• Other work income: costs are deductible, but no entrepreneur deductions apply.
• Keep at least 2 pieces of evidence for hours (for example a calendar and invoices).

What VAT obligations apply to a side freelancer in 2026?

If the side business is a VAT entrepreneur, invoices usually include 21% VAT (standard rate) or 9% VAT (reduced rate), with 0% VAT in specific cross-border cases. VAT returns (btw-aangifte) are commonly quarterly; in 2026 the Q1–Q4 deadlines are 30 April, 31 July, 31 October, and 31 January 2027. If annual turnover is € 20.000 or less, the small businesses scheme (KOR) can remove VAT charging and periodic VAT returns.

If you file VAT per quarter, VAT return and payment are due by the last day of the month after the quarter. For 2026, quarterly deadlines are 30 April 2026 (Q1), 31 July 2026 (Q2), 31 October 2026 (Q3), and 31 January 2027 (Q4). If you file VAT annually, the 2026 annual VAT return is due by 31 March 2027. For a step-by-step walkthrough, see [VAT returns in the Netherlands](/knowledge-hub/vat-returns-netherlands-expat-freelancer-guide).

The small businesses scheme (kleineondernemersregeling, KOR) is optional and applies when annual turnover is not more than € 20.000. With the KOR, you do not charge VAT and you generally do not file periodic VAT returns, but you also cannot reclaim input VAT on costs and investments. The KOR affects only VAT; income tax filing still applies even when the KOR is used.

What are the risks of schijnzelfstandigheid when mixing employment and freelancing?

If freelance work is performed under a relationship that qualifies as employment (loondienst), the Dutch Tax Administration can treat the arrangement as false self-employment (schijnzelfstandigheid) and impose payroll tax corrections on the client. Since 1 January 2025 the normal enforcement approach applies again. From 1 January 2026, the Dutch Tax Administration can impose penalty fines (vergrijpboetes), while 2026 still excludes default fines (verzuimboetes) in this enforcement track.

A practical risk signal is invoicing the same work to the same organisation where the work is also performed as an employee, especially if the organisation sets working hours, supervises day-to-day tasks, and requires personal work. A practical mitigation is to document independence: a clear scope, deliverables, the ability to use substitutes where relevant, and client acceptance criteria. For freelancers, keeping the freelance work clearly outside the employment role reduces reclassification risk.