Yes. Anyone who lives or works in the Netherlands is legally required to take out basic Dutch health insurance (basisverzekering) within 4 months of registering. The monthly premium is roughly €142–€185 (averaging around €159) depending on your insurer. On top of the premium, everyone also pays a mandatory annual deductible (eigen risico) of €385 before most care costs are reimbursed — budget for this separately. Your employer may offer a group discount. Failing to arrange insurance can result in a fine. (This section is currently available in English only.)
The 30% ruling is a Dutch tax benefit for highly skilled workers recruited from abroad. Through 2026, 30% of your gross salary is tax-free. From 1 January 2027, everyone whose ruling started in 2024 or later moves to a flat 27% — rulings that began before 2024 keep 30% for their full term. To qualify you generally need a minimum gross salary of €48,013/year (€36,497/year if you're under 30 with an IDW-verified master's degree), must have lived more than 150km from the Dutch border before being recruited, and your employer applies for it together with you. The ruling doesn't apply above the WNT (Balkenende) cap of €262,000/year. Maximum duration is 60 months (5 years). Important: this salary threshold is a different test from the salary threshold for the highly skilled migrant (kennismigrant) visa itself — meeting one doesn't automatically mean you meet the other.