If you make more than 200k working 2 jobs for the same company you maybe assessed an excess medicare tax. There is a form like 8960 or 8959. The more you make you will have to pay more on your personal tax. If you have too much state taxes witheld, you will pay the alt min tax Form 6251. Also if you itemize, you and earn more than 200k , your itemize deduction might be restricted. In 2023. your personal exemption is reduce.