Freelancer Tools
Hourly rate targets, freelance income modeling, margins, markups, and break-even points.
Hourly Rate Calculator
Calculate the minimum hourly fee needed to cover target net personal income, business overhead, taxes, paid holidays, and non-billable time.
Freelance Income Calculator
Project your monthly and annual gross freelance revenue from billable hours and rates, with estimated tax deductions.
Profit Margin Calculator
Calculate Gross Profit, Profit Margin percentage, and clearly distinguish margin from markup to protect pricing profitability.
Markup Calculator
Determine the required selling price and resulting gross revenue based on direct costs and desired markup percentage.
Break-Even Calculator
Calculate the exact unit sales volume and revenue milestone required to cover fixed overhead and variable unit costs.
Freelancer & ZZP Income Planning in the Netherlands
Transitioning from salaried employment to a sole proprietorship (eenmanszaak) requires a completely different approach to financial planning. Your gross revenue must cover not only your living expenses, but also non-billable administrative hours ("rompslomp"), business overhead, unpaid sick leave, commercial liability insurance, pension contributions, and Box 1 income tax.
Key Tax Deductions for Sole Proprietors
- Zelfstandigenaftrek: Fixed deduction for entrepreneurs meeting the 1,225-hour annual criterion (urencriterium).
- Startersaftrek: Additional deduction for qualifying new entrepreneurs in their first 3 years of enterprise.
- MKB-Winstvrijstelling: A statutory percentage exemption (13.31% in 2024, 12.7% in 2025) applied against remaining business profit before income tax brackets are computed.
- Income-Dependent Health Insurance Contribution (Zvw): Statutory healthcare levy billed annually based on net enterprise profit.
Frequently Asked Questions about Freelancer Tools
Yes. All formulas, tax percentages, rounding conventions, and statutory guidelines are benchmarked directly against official Dutch Tax Administration (Belastingdienst) and European Union VAT Directives.
No. Rompslomp.net operates on a strict client-side architecture. Every calculation and invoice preview runs in your device's browser memory. We never store, log, or sell your financial figures.
Yes. Our Free Invoice Generator includes an integrated A4 print style sheet. Clicking "Print / Save PDF" renders a clean, professional document formatted to meet European Factuureisen standards.
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