Sale of debts
When creditors sell debts to third-party companies, this is called “debt collection”. The company that buys the debt is called a “factor” or “debt buyer”. They pay a percentage of the debt's value, and then they pursue the debtor for the full balance including any interest that's accrued. This immediate revenue for the creditor, even though it's less than the original value of the debt, comes with the shift of work and risk to the debt buyer.