You are right, chargeoff an writeoff are 2 different things. Chargeoff happens when a company doesn't believe, or are required by law, that they are able to bring account current within a time frame. By law the time frame for chargeoff is max 180 days on CC debt at least. Once the clicks, the account is taking from current recievables and transferred to current collections. Depending on the basis of accounting, in accrual taxes are paid that period, in cash taxes aren't paid until closed. If the account isn't collected, the loss goes in for the period the account is sold. When a debt buyer purchases the account, they are purchasing a recievable. What that means, is they are expecting to collect 100%, similar to buying a bond that should pay you at maturity twice what you spent. So if no payment is received it is in fact a loss for you, and losses are free to be claimed on taxes. Writeoff happens when you dismiss the debt as fully uncollectable, that's where 1099c comes in. From what I know you can't sell past 1099c.