In 2018, the w-2 income is $150,000 and federal income tax withholding is $30,000 and state income tax withholding is $10,500. please explain how to calculate federal and state income tax withholding based on $150K w-2 income.

Also, same question with w-2 income of $175,000 and federal income tax withholding of $35,000 and state income tax withholding of $13,000.

filing status- married jointly

thank you.