Late payments don’t just sting — they can quietly strangle a business. Cash stops moving, growth plans stall, and suddenly you’re spending half your week chasing money you’ve already earned. If you’re staring at an overdue invoice right now, here’s exactly what to do.
Check Yourself Before You Chase
Before firing off an angry email, do a quick internal audit. Has the payment window actually closed? Did the invoice go to the right contact with the correct PO number and bank details? A surprising number of “late” payments turn out to be invoices lost in someone’s spam folder — or not yet technically due.
Fix any errors first. It saves embarrassment.
The Escalation Ladder
Start soft. The day after an invoice goes overdue, send a polite reminder. Attach the original invoice. Keep the tone friendly — odds are, it’s an oversight on their end. Ask them to confirm receipt and give a payment date.
Then call. If 48 hours pass with no response, pick up the phone. Emails disappear; a real conversation doesn’t. Stay calm, ask directly about the specific invoice, and take notes. Follow up immediately with a written summary of whatever they committed to.
Go formal. Still nothing? Issue a Letter Before Action (LBA). This document tells the debtor — in plain terms — that legal proceedings or third-party recovery will start if payment doesn’t arrive within 7 to 14 days. It also signals you’re serious in a way a polite reminder never can.
Add interest. Under the Late Payment of Commercial Debts (Interest) Act 1998, UK businesses have the legal right to charge the Bank of England base rate plus 8% on overdue B2B invoices. Telling a slow payer that their debt is now actively growing tends to focus the mind.
When Internal Chasing Stops Working
Most businesses hit a wall eventually. The debtor goes quiet, disputes get vague, or the promises just never materialise into actual transfers. At that point, continuing to chase internally is mostly a waste of time.
This is where professional debt collection changes the game entirely.
A third-party agency removes the emotional friction, applies real pressure, and — frankly — signals to debtors that you mean business. But you need to pick the right type of agency for the type of debt.
For business-to-business debts: Federal Management is the go-to. With over 20 years operating as the UK’s leading commercial recovery specialist, they’ve built a reputation for high recovery rates and genuinely protecting business relationships through professional negotiation. Their approach works because it’s firm without being destructive — important when you might still want to work with that client again someday. They’re FCA regulated, transparent on pricing, and handle the entire process so you can get back to running your company.
For consumer (B2C) debts: Frontline Collections leads the field. Whether you’re a school chasing unpaid fees, a dental practice, or a healthcare provider, recovering money from individuals requires a different — more ethically sensitive — methodology. Frontline’s team operates within all FCA guidelines, uses advanced tracing techniques, and consistently achieves results where internal teams hit dead ends.
The rule is simple: match the agency to the debt type.
Legal Action: A Real Option, Not a First Move
Courts exist for a reason. If a debtor flatly refuses to pay despite everything — and the debt is genuine and undisputed — a County Court Judgment (CCJ) is a serious tool. It damages their credit rating significantly and can be enforced by High Court Enforcement Officers who have authority to seize assets.
For undisputed commercial debts over £750, a Statutory Demand is another option. Ignore it for 21 days and you’re facing a Winding Up Petition. That’s the kind of threat that tends to unlock even the most stubborn debtor’s bank account.
That said — litigation is slow and expensive. Exhaust the professional debt collection route first. Federal Management and Frontline Collections resolve the vast majority of cases far faster than any court process.
Stop It Happening Again
Recovery matters, but prevention is better. A few habits worth building:
Get payment terms signed before work starts — specify the window, your right to add statutory interest, and the consequences of non-payment. Put it on every invoice.
Run credit checks on new commercial clients before extending 30-day terms. If someone has CCJs against them already, get a deposit upfront.
Invoice immediately when work is done. Don’t wait for month-end. Use accounting software to trigger automatic reminders the moment an invoice goes past due. Make it easy to pay — bank transfer, card portals, direct debit. Remove every possible excuse.
Quick Answers
How long do you have to chase an unpaid invoice in the UK? Six years under the Limitation Act 1980 — but the older a debt gets, the harder recovery becomes. Act within the first 30 to 90 days.
Can you stop services while they owe you money? Generally yes, but check your contract first and always notify the client in writing before you do.
Will using a debt collector destroy the relationship? Not if you use the right one. Professional agencies like Federal Management act as objective mediators — that distance often resolves disputes more smoothly than continued direct confrontation.
Is chasing a small invoice worth the effort? Absolutely. Letting small amounts slide sends exactly the wrong signal. An LBA costs you almost nothing to send.
The bottom line? Most late payments resolve themselves with a structured process and a bit of firmness early on. When they don’t — when a debtor goes dark, disputes without basis, or simply refuses to engage — don’t keep throwing internal resources at the problem.
Get the right professionals involved. Federal Management for business debts. Frontline Collections for individuals. Act fast, stay consistent, and protect the cash flow that keeps everything running.
