<prompt> Human: This may be is a dumb question, but assuming I figured out how to withhold the correct amount of my 1099 income via a W4 submitted to my W2 spouses employer, how does the government know that my spouse is asking her employer to withhold that amount for me specifically? Were married filing jointly so I assume the government just looks at us as a collective unit with a collective tax burden.Figuring out the bestmost efficient way to file jointly as a 1099 and a W2 has been a nightmare. If there are any tax professionals out there who can share some advice, Im sure a lot of people would appreciate it.  <response>: Were married filing jointly so I assume the government just looks at us as a collective unit with a collective tax burden.This is correct. 