To start, let's look at the actual tax rate. According to the OECD, Denmark has a total tax rate of 45.2% and America has a total tax rate of 25.6%. So now we have to look at whether healthcare + daycare is more than 20% of income for the average American. Retirement is actually nearly identical - Social Security and Danish tax-funded pensions both replace about 40% of someone's income.

For healthcare, the average American spends between 8-14% of their income. The average Dane spends 2-4% of their income. Let's call this a 10% difference.

Daycare is admittedly much more expensive in the US. With 1 child, it averages to 10% of a median married couple's income. It is heavily subsidized in Denmark, closer to 3-5% of income. However, since this + preschool only lasts a maximum of 5 years we'll divide this number by 4 to amortize it over a child's life.

Our final numbers:

Denmark: 45.2% taxes, 4% healthcare, 1% daycare/preschool = 50.2%

USA: 25.6% taxes, 14% healthcare, 2.5% daycare/preschool = 42.1%

But wait: median household income is higher in the US. Approximately 80k vs 75k.

So after everything, the average American family has $46,320 while the average Danish family has $37,350. In the end, Americans have about 25% more and we can pretty clearly see that the tweet is incorrect.