My employer did not take out federal taxes, how do i fix my w4 to have them start taking out my federal taxes?

[xmasbaby0]

https://www.irs.gov/individuals/tax-withholding-estimator

https://www.irs.gov/pub/irs-pdf/fw4.pdf

[JohnW152]

You can use the TurboTax program, itself, to make calculations and print a Form W-4.  See the TurboTax Help article How do I update my 2023 withholdings and print a new W-4? for more information.

There are a couple of very good calculators you can use to estimate your needed withholding. You'll simply need to know what your filing status will be, the number of dependents you'll claim, your expected income, and deductions, and a few other factors.

TurboTax has a W-4 Calculator that will help you calculate your withholding for tax year 2023. 

The IRS, also, has a very useful Tax Withholding Estimator.