Can Collection Companies Charge Interest? B2B Rules Explained

Your overdue invoice has been sitting with a third-party agency for three weeks, and the first statement back from them shows a number larger than your original claim. The debtor is now disputing the add-ons and asking who, exactly, is entitled to charge what. The short version: the agency is not charging interest to the debtor on its own behalf. The interest belongs to you, the creditor, under contract or statute, and the agency takes a contingency share of what it recovers.

Can Collection Companies Charge Interest Directly to the Debtor?

In almost every B2B jurisdiction the answer is no. A collection agency is an agent of the creditor. It enforces rights that already exist in the creditor's books. It does not originate a new interest rate against the debtor. When a demand letter lists principal plus interest plus fixed compensation, those line items trace back to a statute or a contract the creditor holds, not to a rate the agency invented.

The distinction matters because debtors routinely push back on charges they think were tacked on by the collector. Keeping the interest calculation traceable to a statutory source or a written contract clause removes that argument. The agency's own revenue sits on a separate ledger: a contingency percentage paid by the creditor out of recovered funds.

Three roles need to stay separated in every file:

• The creditor owns the principal, the statutory interest, and the fixed compensation.
• The debtor owes those amounts under the underlying invoice and applicable law.
• The agency is paid by the creditor, typically as a percentage of collected funds.

Statutory Interest Rights Belong to the Creditor

Across the EU and the UK, late payment on commercial transactions triggers automatic statutory interest. The creditor does not need to send a reminder for the clock to start. Interest accrues from the day after the due date, whether the creditor acts on it or not. The agency simply calculates what is already owed.

EU Directive 2011/7/EU on combating late payment in commercial transactions sets a B2B floor of the European Central Bank reference rate plus 8 percentage points, plus a fixed EUR 40 recovery compensation per invoice. Member states transposed this into national law, with several going higher than the minimum.

JurisdictionStatuteInterest Rate (B2B)Fixed CompensationEU minimumDirective 2011/7/EUECB reference rate + 8 ppEUR 40 per invoiceUnited KingdomLate Payment of Commercial Debts (Interest) Act 1998Bank of England base rate + 8%GBP 40 / 70 / 100 (tiered)GermanyBGB § 288(2) and (5)Base rate + 9 ppEUR 40FranceCode de commerce L.441-10ECB refinancing rate + 10 ppEUR 40ItalyD.Lgs. 231/2002ECB rate + 8 ppEUR 40SpainLey 3/2004ECB rate + 8 ppEUR 40

The UK tiers its fixed compensation by invoice size under the 1998 Act: GBP 40 for debts under GBP 1,000, GBP 70 for debts between GBP 1,000 and GBP 10,000, and GBP 100 for debts over GBP 10,000. Germany adds an extra point on top of the EU floor, reaching base rate plus 9 under BGB § 288(2), and France sits highest at ECB plus 10 points under Article L.441-10 of the Code de commerce.

For a deeper jurisdictional map, the European cross-border recovery framework sets out how these rates interact with court procedures and European Payment Orders.

What the Agency Charges the Creditor

Agency revenue is structured around three charge types. None of them are levied on the debtor.

• Contingency fee: typically 10% to 25% of collected funds on commercial matters, varying by debt age, jurisdiction complexity, and claim size. This is the agency's primary revenue line and is paid by the creditor out of what actually lands in the trust account.
• File-opening fee: occasionally USD 100 to 500 to cover upfront investigation, debtor tracing, and document review before any demand goes out. Many agencies waive this on larger portfolios.
• Pass-through costs: court filing fees, bailiff fees, translation, and certified postage. These are approved in writing by the creditor before they are incurred and are billed at cost.

Contingency pricing aligns the agency's economics with the creditor's recovery. If nothing is collected, the agency is not paid. That model breaks down if the agency tries to load its own margin onto the debtor's side of the ledger, which is one reason most jurisdictions forbid it.

Debt Collection Fees the Creditor Can Add to the Debtor's Bill

The creditor's claim against the debtor can legitimately include more than the face value of the invoice. At this point, creditors typically reach out. Contact Cosmopolite for a free assessment. The recoverable components usually are:

Added to Debtor's ObligationAllowed?SourcePrincipal invoice amountYesUnderlying contractStatutory interest from day after due dateYesNational late-payment statuteFixed statutory compensation (EUR 40 / GBP 40-100)YesDirective 2011/7 and national lawsReasonable further recovery costsOften yesArt. 6(3) Directive 2011/7 ("other reasonable costs")Contractual penalty clausesWhere enforceableWritten contractAgency contingency feeNo, unless statute or contract says soPaid by creditorUnilateral "collection fee" by agencyNoProhibited in most jurisdictions

Article 6(3) of Directive 2011/7/EU goes beyond the fixed EUR 40. It entitles the creditor to reasonable compensation for any recovery costs exceeding that fixed sum, including costs incurred in instructing a lawyer or a debt collection agency. National courts apply this differently, but the principle stands: the creditor is not capped at EUR 40 if genuine recovery costs were higher.

The Netherlands Exception and the FDCPA Boundary

A small number of jurisdictions give the collector a direct statutory right to add a regulated fee to the debtor's bill. The Netherlands is the clearest example. The Besluit vergoeding voor buitengerechtelijke incassokosten (BIK), in force since 1 July 2012, sets a sliding scale of recoverable buitengerechtelijke incassokosten that the debtor owes on top of the principal once a final reminder has elapsed. The scale starts around 15% on the first EUR 2,500 of principal, with a statutory minimum of EUR 40, and scales down on higher tranches.

That model is unusual. In most of Europe the agency still cannot unilaterally add its own fee: it can only calculate and claim what the creditor is already entitled to under the late-payment statute and the contract.

The United States splits sharply between consumer and commercial. Under the Fair Debt Collection Practices Act § 808(1), a third-party consumer debt collector may not collect any amount (including interest, fee, charge, or expense incidental to the principal obligation) unless such amount is expressly authorized by the agreement creating the debt or permitted by law. That rule is strict, and consumer collectors who add unauthorized fees face CFPB and state attorney general actions. The FDCPA does not apply to B2B commercial debt, which is why commercial collection in the US runs under state UCC and common law rules rather than FDCPA constraints. In the UK, the consumer equivalent sits in the FCA's CONC sourcebook, where CONC 7.7.5 prohibits unreasonable charges in consumer debt collection.

How Cosmopolite Handles Interest and Collection Fee Calculations

Cosmopolite operates as an international B2B recovery network across the USA, UK, EU, and UAE. Every file is quoted on a contingency basis, paid by the creditor out of collected funds. Statutory interest and fixed compensation are calculated against the applicable national statute: Directive 2011/7 in the EU, the 1998 Act in the UK, BGB § 288 in Germany, L.441-10 in France, and Ley 3/2004 in Spain. Nothing is added to the debtor's obligation beyond what the creditor is entitled to claim under contract or law.

Pass-through costs such as court filing fees, bailiff fees, and translations are presented to the creditor for written approval before they are incurred. The contingency percentage varies with claim age, jurisdiction, and portfolio size, and is quoted before any demand goes out. Our global B2B collection network handles multi-jurisdictional files where interest rules differ across the creditor, debtor, and forum.

Contact Cosmopolite for a free assessment of your case.

Frequently Asked Questions

Can collection companies charge interest?

A collection agency does not charge its own interest to the debtor. It calculates interest the creditor is already entitled to under contract or statutory late-payment law. In the EU and UK that means ECB or Bank of England base rates plus 8 to 10 percentage points, depending on jurisdiction, running from the day after the original invoice due date.

What fees can a debt collector add to the original debt?

A commercial debt collector can claim statutory interest, fixed compensation (EUR 40 under EU Directive 2011/7, GBP 40 to 100 in the UK), and reasonable further recovery costs where national law allows. The agency's own contingency fee is paid by the creditor and is not added to the debtor's bill, except in regulated regimes like the Dutch BIK.

Is it legal for collection agencies to charge interest?

Yes, where the interest is statutory or contractual and belongs to the creditor. The agency acts as the creditor's agent in calculating and demanding it. Adding an unauthorized fee of the agency's own is illegal in most jurisdictions, and in US consumer contexts it breaches FDCPA § 808(1).