Do I include my ex’s income if I filed chapter 13 individually because my spouse asked for a divorce and is now living elsewhere?

No.

When there is a major change in your situation, you need to report it to the trustee. If your spouse is bringing more income and more expenses you should file new schedules for income and expenses.

Sometimes it is really hard to understand important details in an online question. When you refer to your EX, do you mean you are divorced or that you are just currently living apart? If the two of you should reconcile, being legally married would give you one answer while being legally divorced would give you another answer. In either case, you should have experienced representation if going into Chapter 13.

First things first: you would benefit from consulting an experienced bankruptcy lawyer in your own locality. That said, you can file an individual case. You would indicate that your spouse is NOT filing. In reporting your income, you can report whatever he pays you as a contribution from someone not living with you. If you are living together with your husband, then even if he is not filing, if you live in a community property state (like Wisconsin and about 10 others) then all his income is potentially available for a Ch. 13 Plan. If he is living separately when you first file, and then you two reconcile, or at least resume living together, it would certainly be best to submit amended schedules of Income and Expenditures. (Schedules I and J) You would likely also have to file an Amended Plan. This situation is one where working with a well-versed bankruptcy lawyer can be most helpful.

Chapter 13 payments are based on your ability to pay. So if you will benefit financially from his return to your home, then you are obligated to report your spouse's income. If you do not already have a bankruptcy lawyer, it is a very good idea to get one because chapter 13 is complex and goes on for years, and many questions will arise during the life of your case. You can finance attorney fees through your plan payments and they typically are paid at the expense of your unsecured, non-priority creditors, so it usually costs you nothing to have professional support during your bankruptcy.