How did the change in the non-resident tax affect my W-2?

If you are not a resident of New York City, you no longer are subject to City income tax. The amount reflected in Box 20 includes wages paid while you resided within New York City.

Taxable wages in Box 1 and state wages in Box 16 reflect your wages for the full year. As a result of the legislative change, local wages in Box 20 may be significantly lower than the wages in Box 1 or 16.