At What Point Should You Pass an Unpaid Invoice to a Debt Collector?
There is a dangerous psychological trap that catches thousands of UK business owners every year: the fear of offending a late-paying client. You have delivered the service, the 30-day payment term has passed, and yet, you hesitate to escalate the matter. You send a polite email. You leave a gentle voicemail. You wait.
As Head of Commercial Recovery Partnerships, I see the devastating results of this hesitation daily. When it comes to business-to-business (B2B) debt, time is not your friend; it is your greatest enemy. The longer a commercial invoice remains unpaid, the less likely you are to ever see those funds.
The "90-Day Cliff" of Commercial Debt
Industry statistics consistently demonstrate a brutal reality: once a commercial invoice reaches 90 days past its due date, the probability of full recovery drops to approximately 70%. By 6 months overdue, it plummets below 50%. A business that is withholding cash for 90 days is almost certainly using your money to pay off more aggressive creditors, or they are sliding toward insolvency.
So, exactly how long should you wait before bringing in the professionals? Here is the definitive UK credit control timeline for when to chase, when to escalate, and exactly when to pass that invoice to a commercial debt collection agency.
The B2B Debt Escalation Timeline
Days 1 to 14 Overdue: The 'Benefit of the Doubt'
In the first two weeks, it is reasonable to assume an administrative error. Send a polite statement of account via email, attaching a copy of the original invoice. Ensure you request confirmation of receipt. If an email is ignored, a single, polite phone call to the accounts payable department is required to ensure the invoice hasn't simply been misplaced or blocked by a missing Purchase Order (PO) number.
Days 15 to 30 Overdue: The Escalation Phase
The benefit of the doubt has expired. At this point, you must halt any ongoing supply of goods or services to the client. Continuing to supply a non-paying client is commercial suicide. Bypass the accounts department and contact the business director or the person who originally commissioned the work. Advise them formally that their account is now on stop, and request an immediate payment date.
Days 31 to 60 Overdue: The Action Zone (Instruct an Agency)
If an invoice hits 30 days past its agreed due date (meaning you have likely been out of pocket for 60 days since delivering the work), your internal credit control has officially failed. This is the optimal time to instruct a debt collection agency.
Before doing so, you must send a formal Letter Before Action (LBA) giving them a strict 7-day final deadline. If that deadline passes, pass the debt to a professional immediately. Do not wait for day 60.
90+ Days Overdue: The Red Alert
If you are holding onto invoices older than 90 days, you are playing Russian Roulette with your cash flow. At this stage, standard letters and phone calls are completely useless. The debtor knows you are a "soft touch." Immediate, aggressive third-party intervention is required, potentially leading to a County Court Judgment (CCJ) or High Court Enforcement.
Red Flags That Mean "Bypass the Timeline"
While the timeline above is a solid structural guide, commercial reality is rarely perfectly structured. There are certain warning signs that mean you should throw the timeline out of the window and instruct a debt collection agency on Day 1 of the debt becoming overdue.
- Broken Promises: If a debtor promises to "pay on Friday" and Friday comes and goes with no funds and no communication, they are stalling. Do not accept a second promise.
- Radio Silence: If emails bounce back, or phone calls ring out without going to voicemail, the business may have abandoned their premises. Rapid asset tracing is required immediately.
- Fabricated Disputes: A classic stalling tactic is to wait until an invoice is 45 days overdue and then suddenly claim the goods were "substandard." This requires professional mediation to dismantle the false dispute.
- Industry Rumours: If you hear from other suppliers that the business is struggling to pay its bills, you are now in a race against other creditors. The first to act is usually the only one who gets paid before formal insolvency hits.
The Cost Myth: Why SME Owners Wait Too Long
The primary reason UK business owners wait too long to instruct a commercial debt collection agency is the fear of losing money to commission fees. They think, "If I just send one more email, I might get 100% of my money back instead of 85%."
This mindset ignores two vital realities of UK commercial law.
First, almost all reputable B2B debt collection agencies operate on a strict No Collection, No Fee basis. There are no upfront costs to instruct them. If the debtor has gone bust and the money is gone, you do not pay the agency a penny.
Second, and most importantly, UK creditors are protected by the Late Payment of Commercial Debts (Interest) Act 1998. Under Section 5A of this legislation, you are legally entitled to pass the reasonable costs of debt recovery directly onto the debtor.
In the vast majority of successful commercial recoveries, the agency will add their commission costs, statutory interest, and late payment compensation to the debtor's balance. The debtor pays the fees; you receive the full principal value of your invoice.
Don't Wait Until the Debt is Dead
A client who ignores your invoice for 45 days is not a client worth keeping. They are a liability. By delaying action, you are essentially providing them with a free, unauthorised business loan at the expense of your own company's security.
Ready to Escalate Your Unpaid Invoices?
If your polite reminders are being ignored, it is time to bring in the professionals. Debt-Collection.co.uk connects you directly with fully vetted, FCA-regulated UK commercial debt recovery specialists.
Simply upload your unpaid invoice details to our secure, 24/7 portal. Our partners will act immediately to secure your funds, protect your cash flow, and apply statutory late fees to cover the cost of recovery.
Upload Your Invoice Now →