<prompt> Human: Reddit,I just moved towns for a higher paying job and a little confused on the amount of tax taken from my paycheck.Back ground:- Old salary: 46k plus around 8k-10k from side gig. Plus benefits- New salary: 65k no benefits- Living in California, HCOL area- Havent moved tax brackets- Tax rate up 5 from 25old job to 30 new job- Filing status has not changed: single, no dependentsMy thoughts:- I did something wrong on my W4?- Maybe I actually need to pay more in tax? This one seems unlikely to me, still same filing status and tax bracket.Other:- My federal income tax literally doubled- So did my state income taxOverall Im not too concerned. I guess its better to overpay than underpay! Plus its easy in my line of work to find side gigs.Any insight is greatly appreciated! Thanks!Edit: Thank you everyone who has responded! I have learned a lot!  <response>: Youre confusing effective rate i.e., your total tax paid your gross income with marginal rate i.e., the percentage of tax paid on the last 1 you earn.As you move up in income, you move up in tax brackets. Even if you stay in the same bracket, a larger percentage of your income is now in that higher bracket. Simplistically, imagine a system where: 0 - 1000 bracket is 5 1001 - 10,000 bracket is 20If you made 1200, you would be paying 1000 x .05 200 x .20 90.If you made 2200, you would be paying 1000 x .05 1200 x .20 290.Note that your income increased by 183, but your total tax increased by 322.edit: words to clarify percentages 