How the Freelance Rate Formula Works
Your freelance rate is not what you want to earn per hour. It is the minimum you need to charge to cover your income target, your business costs, and your tax obligations — divided by the hours you actually have available to bill.
Most freelancers underprice themselves because they start from the wrong number. They look at employee salaries and match those hourly figures. But an employee does not pay their own taxes, does not fund their own equipment, and still gets paid when there is no client work. You do none of those things automatically — so your rate must account for all of it.
The Formula
Why Billable Hours Are Not Your Working Hours
A freelancer working 5 days a week does not bill 5 days a week. Time goes to writing proposals, invoicing, chasing payments, admin, professional development, and finding new clients. Most freelancers realistically bill 5–6 hours per day on actual client work.
Similarly, 52 working weeks minus holidays, sick days, and professional development leaves 44–47 billable weeks per year. The calculator defaults to 46. If you use 8 hours per day or 52 weeks, your calculated rate will be too low — and you will consistently earn less than your target.
Rate Reference Table — Netherlands ZZP
Assumes 46 working weeks, 5 days/week, 6 billable hours/day, €6,000 annual expenses, and a 32% effective tax rate — typical for a Netherlands-based ZZP freelancer.
| Income Target |
Gross Required |
Billable Hours/Year |
Min. Hourly Rate |
Day Rate |
| €30,000 | €52,941 | 1,380 hrs | €38 | €229 |
| €40,000 | €67,647 | 1,380 hrs | €49 | €294 |
| €50,000 | €82,353 | 1,380 hrs | €60 | €358 |
| €60,000 | €97,059 | 1,380 hrs | €70 | €422 |
| €75,000 | €119,118 | 1,380 hrs | €86 | €518 |
| €100,000 | €156,176 | 1,380 hrs | €113 | €679 |
These are minimum rates. Your actual quoted rate should be 15–25% higher to account for slow months, rate negotiations, and gaps between billable hours.
Frequently Asked Questions
What tax rate should I use as a ZZP freelancer in the Netherlands?
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As a ZZP professional in the Netherlands, your income tax depends on your total taxable income. In 2026, the first bracket up to approximately €75,000 is taxed at around 36.97%, and income above that at 49.5%. However, ZZP professionals benefit from the zelfstandigenaftrek (self-employment deduction) and the MKB-winstvrijstelling (SME profit exemption), which reduce your effective rate. For most ZZP freelancers earning under €80,000, an effective tax provision of 30–35% is a reasonable planning assumption. Consult a Dutch boekhouder for your exact situation.
What counts as a billable hour and what does not?
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A billable hour is time you can charge a client for — direct work on their project such as writing, designing, developing, consulting, or installing. Non-billable time includes finding clients, writing proposals, invoicing, attending non-billable meetings, and managing your business administration. The gap between total working hours and billable hours is typically 25–35%. If you work 8 hours, expect to bill 5–6.
Should I charge the same rate to all clients?
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Your calculated rate is your floor — the minimum below which you cannot profitably operate. Many experienced freelancers charge different rates based on project complexity, client size, urgency, and the value delivered. A large corporate client with a tight deadline may be charged significantly above your minimum. Your rate is not a fixed price — it is your starting point for every pricing decision.
What business expenses should I include?
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Include all costs directly related to running your freelance business: software subscriptions, equipment and hardware, professional liability insurance (beroepsaansprakelijkheidsverzekering), accountant fees, marketing and website costs, professional development and training, co-working space or home office costs, and any tools or materials your work requires. Do not include personal living costs — those are covered by your income target.
Is my calculated rate competitive in the Dutch market?
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It depends on your sector. In the Netherlands, freelance day rates vary significantly by industry. IT contractors and software developers typically range €600–€1,200 per day. Creative professionals such as designers and copywriters typically range €300–€600 per day. Tradespeople and skilled technical workers vary widely by specialisation and region. Your calculated rate is your minimum — market research tells you what clients will pay. Use both together.
How often should I recalculate my freelance rate?
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At minimum once per year — typically at the start of a new financial year. Recalculate sooner if your expenses change significantly, your tax situation changes, your income target increases, or you find yourself consistently unable to reach your target despite being fully booked. Most freelancers underestimate how quickly inflation and rising costs erode a rate set years ago.