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I have a similar issue for tax year 2022. My father dies in early summer. My mother survives. The Federal Return on Turbo Tax deluxe let me do a joint return for both of them, but the state part would not let me..said I had to do separate returns...but the PA department of Revenue directly says I can do a joint return,,,so what is wrong with the Turbo Tax programming or how do I get around it?