Many of my consulting clients as me which types of debt would be the most profitable for my collection agency. Based on my experience agencies can be more profitable if they collect on some commercial accounts, or specialize in collecting on commercial accounts. Commercial accounts normally have larger balances due than consumer accounts so you can collect less of them and make a good amount of money. Otherwise, I had the best luck with veterinary bills, utilities, credit cards, phone bills, oil bills and online purchases as well as retail credit card debts.
What have been your most profitable clients or debt?