<prompt> Human: Hypothetical scenario may soon become reality as I think my wife is going to land a job in the next couple weeks: Wife and I file US tax returns jointly. I make 70-90k a year I put in 8 of salary and company matches 100 of 6 to 401k. I also try to max my Roth. Wife starts making 45k a year. We will have her contribute to 401k up to company match and will try to start a Roth if finances allow.Once both Roths are fully funded, will there be an advantage or disadvantage to me contributing a higher percentage of my salary to 401k than she does, or vice versa? As in, will reducing the post-tax income of the higher earner lower our total tax liability, or does it even matter because were filing jointly? I can try to clarify if my question is confusing.For anyone curious, we live in a high cost of living area and have family obligations that prevent us both from maxing out our 401k to 17.5k after Roths. This isnt really pertinent information, just for the people who wonder why we cant save more on a hopefully soon-to-be 120k income.Edited for missing punctuation  <response>: Nope, youre taxed at a married rate so all of it is joint. 