Federal tax withholdings?

[mspapaya83]

How to start having my federal tax withholding on my paycheck

[VolvoGirl]

Give your employer a W4 form.  Here is the W4 form

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

Or are you paid as a 1099 independent contractor?  Ask your employer if you will get a W2 or 1099NEC at the end of the year.  Are they taking out Social Security?