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

It can, which is why how an agency communicates matters as much as its rate. Ask about contact frequency, tone, dispute handling, and whether early-stage work is done as reminders under your name before escalation. Many agencies offer a softer pre-collection product for exactly this reason.

Sometimes - it depends on your contract and state law. Where your terms and conditions provide for collection costs and interest, and the applicable state permits it, those amounts may be added to the claim. That clause is worth having in your standard terms before you need it; ask your counsel to review it.

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.

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.

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.