BobB7
New Member

Get your taxes done using TurboTax

It might make sense to prepare hypothetical returns: you MFS, your wife MFS, you both MFJ, her parents with her on, her parents without her.  In  a friendly family, you all follow the strategy with the lowest overall tax, and then settle up in a fair way.  But as bwa says, friendly or not, if you both file a MFJ return that's final: they cannot claim her.