<prompt> Human: If I start using only my income single W2, I get a return of 2356.If I restart and only use my husbands income two W2s, theres a return of 1630.Now just to be clear. These are both positive numbers. According to TurboTax, I would be receiving not paying 2356. My husband would be receiving not paying 1630. That should be a total of 3,986. Right? Seems like simple math.Except apparently its not. When I go through the entire process. The total refund equals 1,017. What gives? What changing when were combining our income? TurboTax suggests that we file jointly but this is telling me to file separately.Whats going on here?Assistant: Ignore your refund amount until you enter both W-2s.Human: Ive entered all the W-2s and it just reduces my total refund.Assistant: As it should because your total tax liability increased.Human: But why? I dont understand whats happening.  <response>: The first W2 you enter is taxed starting at the lowest tax bracket and then each tier thereafter. The second W2 starts where the first left off in that bracket and stops at whatever bracket contains the total value of both W2s. 