Before you separate when possible, close all joint credit accounts. Closing them before divorce proceedings will keep an angry spouse from using the account and running up charges that you may later be held responsible for.
Offer to close the accounts by paying a smaller amount than is owed. If this is done, get a letter from the creditor that the account has been paid in full and a written promise that they will not file anything derogatory about the account to the credit reporting agencies.
If you are not able to pay off or come to a settlement agreement regarding the balance owed you should have the accounts frozen. This will keep you from being able to use the account but will also protect you in the end. Once the divorce is final, the balance owed on the account can be transferred to the party the court holds responsible for the debt. If the responsible party does not pay the debt then you dont have to worry about it affecting your credit score.
Contact and alert creditors to the fact that you are going through a divorce. If there is a change of address, make sure they know it so that you will continue to receive bills from all joint accounts.
Make sure all credit card bills are being paid. Divorce proceedings can take months and all it takes is one late payment to hurt your credit. Even if you have to pay the minimum on accounts that you know will ultimately be your spouses responsibility it will be worth it.

