Joint Account

• If you and your husband had joint credit card accounts, both of you are signers on those accounts and both are legally responsible for repaying them. If your husband held credit card accounts in his name only, whether you are responsible for paying off those debts depends on the state in which you live and what happens in probate court.
  
  

Authorized User

• If your husband held credit card accounts you were allowed to use as an authorized user, you may not be responsible for paying those after his death. Authorized users are allowed to use a credit card or account, but they are not legally liable as a co-signer or joint account holder is.
  
  

Community Property

• If you live in one of the 10 community property states, you may be responsible for repaying your husband's credit card debt regardless of whether you were a joint account holder. In community property states, all assets and all liabilities are jointly held by both husband and wife as a unit instead of individually.
  
  

Probate Court

• The probate court process generally takes stock of all secured and unsecured assets plus all outstanding debts. It liquidates assets as needed to pay off the debts. Sometimes a secured asset, such as a home or car, is sold to help pay off unsecured debts, such as credit card balances. This process ensures the deceased person's estate pays off his debts instead of his wife being responsible. If the estate is not worth enough to cover all of the debts, in some states, the debt is written off.