For refund, I think I will enter half on mine and he will enter half on his. The joint 2020 state refund is simply entered 1/2 on his and 1/2 on yours.
How do I enter payment/withholdings? Do I enter half of total of both our payments/withholdings? Or do I enter the withholdings only on my W-2? What payment/withholdings are you talking about? None of the 2020 amounts are entered on a 2021 return. If you are filing separately for the 2021 return then you each enter only your income/expenses/withholdings on your returns ... none of the other persons info will go on your return.
