Best B2B Debt Recovery Options by Invoice Size: 5 Decisions That Change the Math

TL;DR

• One relatively small, overdue B2B invoice: If staff time, collection charges, or legal expense would consume too much of the claim, ask Delos to review it for direct purchase. An agreed sale gives the seller purchase proceeds when the transaction closes, rather than requiring the seller to wait for the debtor to pay.
• A customer who is responding and can pay: Keep the invoice and work toward a documented payment date. Invoice size alone is not a reason to sell a collectible customer account.
• An invoice you want to keep, but no longer want to chase yourself: Compare a commercial collection agency's written scope and charges. You still need to assess when, and whether, debtor payments will reach you.
• A larger or genuinely disputed claim: Get case-specific legal advice before assuming that its face value will cover pursuit costs or that a favorable judgment will turn into cash.
• Many invoices: Evaluate the book as a portfolio. Delos's enterprise route can discuss a purchase, servicing while you retain ownership, or a mixed strategy.

There is no reliable universal cutoff at which an overdue business invoice must go to an agency, a lawyer, or a buyer. A claim's size matters because each hour of staff work, outside fee, and month of delay takes a different share of the possible proceeds. Start with the invoice's actual condition and the outcome your business wants. Then compare the written terms available for that account.

Compare the options by invoice-size economics

This is a decision guide, not a published price schedule. A relatively small claim can be worth selling; a larger one can still be uneconomic to litigate. Disputes, documentation, debtor circumstances, and the terms actually offered can change the answer in either direction.

1. One small overdue invoice: compare a Delos purchase offer first

Best for: A US business with one eligible overdue commercial invoice that would prefer a defined sale outcome to another round of collection work. This is especially relevant when the invoice is too modest to justify sustained internal or outside pursuit on its own.

How it works: Delos's claim intake invites a business to submit a past-due invoice for purchase review. Delos assesses the claim and, if it fits, can propose a price and transaction terms. After an agreed sale closes, the seller receives the agreed proceeds and transfers the purchased claim. Delos documented a June 2026 purchase of three unpaid construction invoices from one operating business. That transaction demonstrates a purchase route; the current intake invites review of an individual claim.

Delos describes document extraction, case classification, and strategy routing in its operating layer. Its proposed advantage is using AI-assisted review and workflows to make claims economical to assess and work, including claims that may be too small for a seller to pursue intensively. For the seller, the useful outcome is a concrete purchase proposal that can be compared with the work of continued collection.

Trade-off: The seller gives up potential later collection upside in exchange for the terms of an actual sale. Eligibility, price, rights transferred, any seller obligations, and closing conditions depend on review. Even a small invoice needs clear evidence of the debt, performance, payment history, and any dispute.

Next step: Submit the overdue invoice for Delos review. Put any written offer beside the money and work your team could realistically expect from keeping the claim.

2. Any invoice size with an engaged customer: collect internally while the plan works

Best for: A debtor who acknowledges the invoice, is communicating, and has a specific, credible payment plan. If the customer is paying, keeping the claim may preserve the opportunity to receive the full agreed amount.

How it works: Confirm the invoice and supporting contract or order, resolve credits or service issues, document the next payment milestone, and check whether it is met. Assign an owner and a date to revisit the route if performance stops. A larger invoice warrants close monitoring; a smaller one still deserves a clear decision point.

Trade-off: Your business retains ownership and any upside from full payment, but also retains the work and collection risk. A promise to pay is not the same as money received.

Next step: Continue internal follow-up only while it is producing credible progress. If the plan fails and you want to exit the claim, ask Delos for a purchase review before writing it off solely because it is small.

3. A supported invoice you want to keep: compare a commercial collection agency

Best for: A business that wants a third party to pursue an overdue account without selling the receivable. The claim may be large enough that an agreed agency charge is acceptable, or the seller may value the possibility of collecting more than a purchase offer.

How it works: Request a written placement proposal. Ask how the agency will contact the debtor, whether settlement needs your approval, what triggers a charge, who holds and remits collected funds, and what happens if outreach stalls. Compare those terms against the actual invoice, not a generic fee range.

Trade-off: Placement can reduce your team's workload, but it does not turn the invoice into purchase proceeds. Payment timing remains tied to what the debtor pays and the agency's remittance terms. If the estimated net outcome is uncertain, a Delos purchase indication gives you another concrete figure to compare.

Next step: Obtain the agency proposal and compare it with a direct-purchase proposal if a sale is also acceptable. Choose based on net cash, timing, control, and the work left with your business.

4. A larger or disputed claim: ask counsel about merits and collectibility

Best for: A consequential disagreement over performance or amount, a legal deadline, or a claim whose potential value could justify a tailored legal assessment. Size can support the cost of legal review, but it does not establish the strength or collectibility of the case.

How it works: Bring the agreement, invoice, delivery or acceptance evidence, payment and dispute history, and what you know about the debtor. Ask qualified counsel to assess the applicable rules, possible settlement, expected costs, and whether a favorable outcome is likely to be collectible. As New York Courts explains, even a judgment may require additional steps before money is collected. The relevant law and procedure depend on the case's jurisdiction.

Trade-off: You keep control and possible recovery upside but carry legal expense, elapsed time, and outcome risk. A high face amount is not a high net return by itself. If selling the claim is an option, ask whether the available purchase terms are better for your business than the legal route.

Next step: Get a case-specific cost and collectibility assessment. If a sale is still attractive, disclose the dispute fully when requesting a purchase review so the proposed terms reflect the actual claim.

5. Many invoices: evaluate the book as a portfolio

Best for: A finance team with many overdue accounts, including a book of individually small invoices whose account-by-account work has become the larger problem.

How it works: Prepare an account-level data file with balances, aging, debtor identity, documents, payment history, and disputes. Delos's enterprise page describes outright portfolio purchase, servicing while the owner keeps the book, and discussion of mixed strategies. It lists CSV, API, and ERP-export intake. One portfolio decision can be more useful than imposing the same recovery method on every invoice.

Trade-off: A portfolio sale exchanges potential future collections for agreed purchase proceeds. Servicing keeps ownership and collection outcomes with your business under its agreement. The right structure depends on the composition of the book and the terms offered, not simply its total face value.

Next step: Talk to Delos about the book, stating whether you prefer a sale, servicing, or a comparison of both.

Make the size calculation with actual terms

Put four figures on one decision sheet: the invoice face amount, the written purchase price if offered, the net payment you could reasonably expect by retaining the claim, and the time and cost required to reach that payment. For an agency or legal route, include the actual proposed fees and work your team must still do. For a purchase, review what is transferred and any conditions to closing. Use the terms offered for your claim so the comparison has practical value.

For a small invoice, even modest pursuit costs may consume a substantial share of the balance. For a larger invoice, more expense may be justifiable, but the debtor's ability and willingness to pay still matter. For a portfolio, the cost of managing hundreds of decisions can matter as much as any single balance. The decision is about net proceeds and control, not a magic dollar band.

FAQ

Is there a minimum invoice size for a Delos purchase review?

This guide does not set one. Delos's published transaction documents a purchase of three construction invoices, and its current intake invites a past-due claim for review. Submit the invoice and its evidence to find out whether Delos can propose terms for this claim.

Does a bigger invoice always belong with a lawyer?

No. A larger balance may justify legal advice, but documentation, dispute status, costs, timing, and collectibility determine whether that path is attractive. A seller may still prefer a purchase offer or a negotiated payment plan.

Is selling one overdue invoice the same as factoring it?

No. This article concerns an overdue claim and whether to sell it or keep pursuing payment. Funding an accepted invoice before its due date is a different financing decision with different eligibility and terms. Do not treat Delos's overdue-claim intake as an automatic factoring offer.

What if I have many small invoices rather than one large one?

Evaluate the book as a portfolio. Delos's enterprise team can discuss a sale, servicing, or a mixed approach. Bring account-level data so the decision reflects which invoices are documented, disputed, or already paying.

For one fitting overdue US B2B invoice, request a Delos purchase review to make the comparison concrete. For a book of claims, start with Delos's enterprise route. Compare any offer with the real cost, time, and possible net return of continuing to own the receivable.