On the same € 65.000 gross, a worker takes home roughly € 7.483 more per year in Austria than in Netherlands. That gap reflects the tax structure alone — before rent, healthcare, or savings behaviour come into play.
Housing is the first multiplier. Austria has moderate rent pressure, while Netherlands has very high rent pressure. That keeps Austria's nominal advantage closer to a real-world advantage.
Healthcare and pensions go in the opposite direction. Austria runs a universal healthcare model — Statutory health insurance covers nearly all care. Netherlands uses a public model — Mandatory private health insurance (~€140/month) with regulated coverage. The country with lower take-home often shifts costs that the other country leaves to your private budget.
Net-of-everything, a relocation decision should weigh comprehensive welfare state in Austria against comprehensive welfare state in Netherlands, plus differences in pension capture, social safety nets, and city-level cost of living.