What about 500k ? Because that's what the Seattle city council tax says [1]. So no, a family earning 200-250k will definitely not feel this tax

Even if the limit was 250k, how would a family earning less than 250k feel the tax? It would literally cost them $0 per year since only income above 250k are taxed.

From [2]:

    Tax Filing Status           Total Income                                                    Rate
    “single”	                Total income in the tax year up to $250,000	                0%
                                Amount of total income in the tax year in excess of $250,000	2.25%
                                
    “married filing jointly”    Total income in the tax year up to $500,000                     0%
                                Amount of total income in the tax year in excess of $500,000    2.25%

[1] http://council.seattle.gov/2017/07/10/council-approves-city-...

[2] http://seattle.legistar.com/LegislationDetail.aspx?ID=308547...