On the same $90,000 gross, a worker takes home roughly 11 121 kr more per year in Norway than in United States. That gap reflects the tax structure alone — before rent, healthcare, or savings behaviour come into play.
Housing is the first multiplier. Norway has high rent pressure, while United States has high rent pressure. The two markets behave similarly, so most of the gross-to-net advantage flows straight into disposable income.
Healthcare and pensions go in the opposite direction. Norway runs a universal healthcare model — Universal public healthcare with small patient co-pays. United States uses a private model — Private, employer-tied insurance dominates; out-of-pocket costs can be significant. 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 Norway against basic public welfare in United States, plus differences in pension capture, social safety nets, and city-level cost of living.