All income - including the income of a non-filing spouse - that comes into a debtor's household is taken into account when determining what the debtor's monthly plan payment should be. This is so, even though the debts were incurred before the couple were married. However, any income from the non-filing spouse that is not used for the debtor's (your husband) expenses gets deducted before arriving at the monthly payment amount.
In other words, if your income is $10,000 per year, and you contribute nothing to your husband's household expenses, then none of that income would be included for determining your husband's monthly payment. However, if your income is $10,000 per year, and you contribute $3,000 to your husband's household expenses, then $3,000 would be included when determining your husband's monthly payment.
If it is any consolation, your husband's Bankruptcy has no affect on your husband's ex-wife's obligation to pay the debts that are also in her name.
In other words, your husband's Bankruptcy cannot discharge her liability to pay those debts, only his liability to pay the debts. She will remain completely liable for any debts discharged that are also in her name.
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