My father-in-law passed away in NY state 2 months ago. He left no will. His house has no equity in it and he has under $6K in the bank. We have not gone for Letters of Administration. We have sold his car for pennies and am working on selling the home in which there will be maybe profit of $20K. There was a retirement plan of $1500 and a compensation plan of $5K that listed my husband and 2 siblings beneficiaries of. Will we be responsible to pay his unpaid income taxes?