What are the legal obligations of the executor of a will in WISCONSIN

First off, you are required under Wisconsin law to file the original Will in probate within 30 days of the decedent's death. It is filed in the county of where they were residing. If the estate is "bankrupt" you would be required to do a procedure called "summary administration."  It would be akin to doing a bankruptcy if the person were alive. At no time do you as the executor or personal representative of the estate, have personal liabilty to pay off the debts and finanical obligations of the decedent. The estate is responsible. You would be acting as legal authority for the estate only. It  would be best to sit down with an attoreny in your area to discuss what you need to do who is experienced in probate and estate matters.