<prompt> Human: Just got married in April so changed my w4 info. Before I was claiming single and zero and netting around 65 of my gross pay. My first check after changing to married and zero netted me 72 of my gross pay. This seems like quite the jump. I feel like Im going to owe something come tax time with these new numbers. In the past I have always gotten a refund of a couple thousand. Is this normal?Assistant: Being married increases the amount of income you can earn for each tax bracket, so no this isnt unusual.Try using the IRSs withholding calculator for a better idea of what you should withhold.Human: That calculator doesnt help me at all with the random overtime I get throughout the year. No way to predict how much overtime I get; I always get a lot.  <response>: If you dont know how much money you are going to make then no one can help you. Its going to depend entirely on how much income you and your spouse make versus your various credits and deductions. If you are fairly simple from a tax standpoint, claiming 0 should work out fine. 