~$400k is the threshold for household[1] income. ~$200k is the threshold for individual[2] income.
[1] https://en.m.wikipedia.org/wiki/Household_income_in_the_Unit...
[2] https://en.m.wikipedia.org/wiki/Personal_income_in_the_Unite...
[1] https://en.m.wikipedia.org/wiki/Household_income_in_the_Unit...
[2] https://en.m.wikipedia.org/wiki/Personal_income_in_the_Unite...