Married filing separate do we just split the mortgage deduction since we both have to itemize.

[Marketstar · Accepted solution]

You should each deduct the mortgage interest payments you actually paid.

However, if paid by a joint account, you can divide the deduction as you agree.

[Anonymous]

My wife and I are filing jointly on our federal return and separately on the same return on our DC state return. How do we allocate income/subtractions/deductions on our state return when the income (capital gains and taxable refunds of state taxes), subtractions, and deductions all came from or went to our shared accounts?  There is no natural division, so can I do anything from 100-0 to 50-50?  100-0 results in a different state tax refund than 50-50, so it seems like this matters, but I don't understand it.