The state rule, the city rule, and the one that follows your debtor

No. The Fair Debt Collection Practices Act defines 'debt' as an obligation of a consumer arising out of a transaction primarily for personal, family or household purposes - business-to-business obligations fall outside the statute entirely. That does not mean B2B collection is unregulated: state collection statutes, phone-consent rules, contract terms and ordinary law still apply.

In some states, more than you would expect. Washington's statute bars an unlicensed agency from bringing or maintaining a collection action in that state's courts - so a licensing gap can make an otherwise collectable account unenforceable there. There is no nationwide rule making debts void, and this site does not claim one; check your state's page and verify licensing before placing.

An agency works your account for a share of what it recovers and returns what it cannot collect - you keep ownership of the debt. A debt buyer purchases the account outright, usually for cents on the dollar, and keeps everything it recovers. For unpaid B2B invoices where the customer relationship may be salvageable, the agency model is normally what businesses want.

Commercial collection is normally contingency-based - a share of what is actually recovered, commonly 10-40%. Account age drives the rate more than balance size: fresh accounts under 90 days commonly run 10-25%, 90-180 days 15-30%, 180 days to a year 20-35%, and over a year 25-40%. Some agencies also offer fixed-fee early-stage demands at roughly 15-20 dollars per account.

Potentially, but through agency law rather than the FDCPA. Federal telecom regulators have said a seller may be held vicariously liable under common-law agency principles for calls placed on its behalf, and 23 states extend their own collection statutes to original creditors as well as third-party agencies. The practical answer is to ask how an agency contacts debtors and to verify its licensing before placing accounts.