If you have access to the 2019 software installed on your own computer, you can switch to forms mode and call up the “what if” worksheet. This will simulate two married filing separately tax returns. The final refund numbers would not be exactly correct, but it would give you an idea of the approximate ratio to use in dividing the tax refund. Basically, if both withholdings were roughly in balance, then the refund would be a portioned based on your proportion of income. However, if one person‘s withholding was much larger than it needed to be, that person might be responsible for a larger share of the refund.
however, if you don’t have access to the 2019 software, I don’t know that it is worth it to buy it just to do the calculation.I would probably just divide the refund based on your proportion of incomes, or any other way that you can mutually agree. I don’t see the IRS getting involved unless one of you complains or that you fail to report the total amount between the two of you.
