Salary vs Commission/Bonus Tax

I live in New York City & my employer wants to increase my salary & decrease my commission + bonus. The commission/bonus i receive is already taxed & included on my W-2 (not a 1099). My question is will I take home more money after taxes are paid if I make overall the same amount of money, but more $ is shifted into my salary. Are bonuses/commission taxed more than salaries? Thanks!