<prompt> Human: I started a new job about a month ago. I make 13hour and right now work about 15-20 hours a week. When I got my paystubs I checked the Withholding and it states 0 is being taken out. I checked my W-4 just to make sure that I hadnt claimed anything and it has my status as married which is true and Im claiming 0 which is what I want. So, I brought this up with my manager who got in contact with someone higher up and they told me I make too little to have anything withheld Federally. So I decided to check the paystubs from my other job because I make less there 9.83hr and work about the same amount of hours. I am also getting 0 taken out but at some point I had 13 taken out.I dont know if minimums were changed. Im just worried come tax time Im going to be paying back federal taxes instead of receiving them. I appreciate any help.  <response>: Use the IRS Withholding Calc and give it info about your spouses income and yours, as well as starting and ending dates of your jobs. It will suggest settings for all your W-4s to best achieve right total amount of withholding. In first screen, select Married filing jointly. In second screen, youll say 3 jobs, and in third screen supply info about total income you expect and amount of withholding so far from all 3 jobs and what months you hold them. You can leave many fields blank if they dont apply, and advance to the final results.---The algorithm thinks each income stream is your only one. So it probably is inferring that you earn less than 20700 and it doesnt know about your spouses income.20 hours at 13hr 260week; 13520yearA married couple earning 13520year doesnt owe fed income tax, since deduction is 12600 and exemptions are 8100.Same for your other job. The W-4s dont talk to each other, so they dont think you owe tax but you do.This explains why the withholding has not been happening.---With two earners or multiple jobs, you need to make special calculations. There is a Two-EarnersMultiple Jobs worksheet on Form W-4 page 2. But the online calculator is even better, as it lets you specify what dates you hold your part time jobs this year, so it may give you a more precise result than the worksheet.The result may be that spouse changes their withholding to increase amount taken and you do nothing. Or answer may be you will use line 6 on at least one of your W-4s to force a specific amount to be withheld each paycheck.See what the calc says and ask again if the results are hard to interpret. It can be tricky to see how to enter your data.Its great you are pursuing this now, so at tax time you will have already paid most of your tax and wont get shocked with a big bill. 