On the same 65 000 € gross, a worker takes home roughly 11.114 kr. more per year in Denmark than in Finland. That gap reflects the tax structure alone — before rent, healthcare, or savings behaviour come into play.
Housing is the first multiplier. Finland has moderate rent pressure, while Denmark has high rent pressure. That keeps Denmark's nominal advantage closer to a real-world advantage.
Healthcare and pensions go in the opposite direction. Finland runs a universal healthcare model — Public healthcare via wellbeing services counties; private add-ons exist. Denmark uses a universal model — Universal tax-funded healthcare; very low out-of-pocket costs. 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 Finland against comprehensive welfare state in Denmark, plus differences in pension capture, social safety nets, and city-level cost of living.