Netherlands tax deadlines 2026.
Every individual and self-employed income tax deadline for Netherlands in 2026. Plus recurring VAT / GST / sales tax filings. Each deadline links to notes on how to file, what people miss, and matching open tax rules.
Annual deadlines
1 this yearRecurring filings
VAT / GST / Sales taxBTW-aangifte (VAT Return)
Netherlands
Dutch VAT return (BTW-aangifte) filed quarterly by default. Monthly for high-volume traders; annual available for very small businesses.
Open tax rules for Netherlands
Prepare this return with open-source skills
These skills are in the OpenAccountants repo. Add them to your AI agent and they handle the computation.
Assemble and reconcile the 2025 Dutch income-tax, Zvw and VAT reviewer package for a full-year resident sole proprietor, with evidence checks, partner allocation, separate filing and payment actions, and a distinct 2026 forecast.
Compare lawful Netherlands tax-planning choices for 2025 returns and 2026 decisions: business relief, costs, investments, pensions, losses, BV or partner structure, VAT, Zvw and Box 3, with evidence and cash-impact holds.
Calculate and document Netherlands self-employed deductions for 2025 and 2026: entrepreneur and hours conditions, starter relief, carryforward, MKB loss treatment, partner relief, investments and existing FOR reserves.
A sourced 2026 employer-administration method: registration, identity and BSN exceptions, payroll records, payslips, returns and corrections, annual statements, retention and secure provider handoffs.
How to prepare and file the Dutch VAT return (btw-aangifte) for a Netherlands-established business: periods and deadlines, the box map, rates including the accommodation change, KOR and EU-KOR, reverse charge and the ICP listing, input VAT limits, corrections, penalties and tax interest.
Prepare Netherlands income tax for sole proprietors for 2025 returns and 2026 estimates: reconciled business profit, personal income, annual Box1 and credit formulas, Box3 methods, assessment offsets and separate Zvw boundaries.
Operational Netherlands tax objection procedure: route selection, evidence, deadlines, payment, late requests and court escalation, reviewed for 2026.
Prepare and review Dutch company annual accounts: establish the reporting framework and size, reconcile year-end adjustments and disclosures, assess audit and group exemptions, adopt and file the correct accounts with KVK on time.
Prepare a Netherlands review pack with open skills
These skills can help your AI agent draft computations, organize schedules, and prepare a review package. They do not replace a tax preparer or determine your final filing position. The OpenAccountants repo has open skills, accountant-reviewed where available — run them with your AI agent, then have an accountant review.