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

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.

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.

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.

Normalize three things: the commission ladder by account age, what happens to the rate after attorney forwarding, and remittance timing. Then verify licensing in your debtors' states and place a test batch rather than the whole ledger. Recovery against the quoted ladder tells you more in one cycle than any sales conversation.

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.