Client has finished up their divorce settlement without completing his tax return. They were still married 12/31/2024.

She filed hers MFS with some of the community property income, but not all.

He wants me to file his MFS tax return which of course is wrong. 

Between the two of them, all the income has been captured.

Both live in Washington, a community property state.

What is my liability here?

Thanks in advance, Christopher