"From that, we learn two singles in 2019 add their income to file a joint 2020. It is reasonable to expect that to work backwards. If a couple is joint in 2019, then choose the single amount for 2020." but can we know if 'community propert' rules apply? so the 'single' amount looking back is 1/2 the joint amount? Or will IRS want the actual separately earned W2 income from each spouse?
Again, makes a huge difference for me since my ex spouse made/makes much more than I do.
