Most people don't know this, but if you settle a debt for less than the amount you owed, you are potentially responsible for taxes on the forgiven debt. Look at it this way: You received goods and services for the full amount of debt, but you're only paying for a portion of it - sometimes less than 50%. Anything more than $600 is generally considered taxable, but the IRS will sometimes waive the tax if you can prove that your assets were less than your liabilities when the debt was settled.