The Polite Chase: A Step-by-Step Approach to Collecting Overdue Invoices

Most small business owners would rather do almost anything than send a second reminder email. There is an instinctive discomfort in chasing money you have already earned, as though asking politely for what you are owed might somehow mark you as difficult. Yet late payment is one of the most common and most preventable causes of cash flow trouble for UK small businesses, and the firms that handle it well tend to share one trait: they treat collections as a process, not a confrontation.

This article sets out that process — from the words you put on the invoice itself through to the statutory rights you may not realise you have.

Start Before the Invoice Is Sent

The most effective debt recovery happens before any debt exists. Ambiguity at the point of sale is what allows a 30-day term to quietly become a 60-day one.

Before you begin work, make sure your terms are explicit and agreed in writing:

• Payment terms — state the number of days clearly (14 and 30 days are standard; anything longer deserves scrutiny)
• Payment method — bank transfer with your account details on every invoice removes friction
• Late payment consequences — a short line noting that statutory interest and charges apply to overdue sums sets expectations without aggression
• Purchase order references — where your client is a larger business, an invoice without a PO number is the single most common reason for delay

A brief terms sheet or a clause in your engagement letter costs nothing and gives you firm ground to stand on later.

A Timeline That Escalates Gently

Think of chasing as a ladder. Each rung adds a little more formality, and you only climb as high as you need to.

Day 0 — the invoice goes out. Send it the day work completes, not at month end. Every day of administrative delay is a day of credit you are extending for free.

Day 7 — a courtesy nudge (optional). For new clients or large invoices, a short email confirming receipt of the invoice and asking whether anything is needed to process it can pre-empt the 'lost in an inbox' excuse entirely.

Day due — friendly reminder. A polite note acknowledging that payments slip through the cracks: "This invoice fell due today — a reminder attached in case it has been missed." Assume good faith; most late payments at this stage are oversight, not strategy.

Day 7 overdue — firmer follow-up. Now ask for a payment date, not just payment. "Please let me know when this will be settled" converts a vague delay into a commitment you can diarise.

Day 14 overdue — formal letter. Reference the original terms, restate the amount, and note that statutory interest will be applied from the due date. A letter headed 'Formal Demand' from your own letterhead often concentrates minds.

Day 30 overdue — external options. At this point, consider a solicitor's letter of claim, a debt collection agency, or — for smaller sums — HMRC-free routes such as Money Online Claim or the small claims track at court, which handles claims up to £10,000 with modest fees.

Your Statutory Rights: The Late Payment of Commercial Debts (Interest) Act 1998

Many business owners are unaware that the law already works in their favour. Under the Late Payment of Commercial Debts (Interest) Act 1998, unless your contract specifies otherwise, you are entitled to:

• Statutory interest at 8% above the Bank of England base rate, calculated daily on the outstanding amount
• A fixed compensation charge — £40 for debts under £1,000, £70 for debts between £1,000 and £10,000, and £100 for debts over £10,000
• Reasonable recovery costs beyond the compensation where collection costs are higher

You can claim these without a lawyer and without mentioning them upfront — they apply automatically to business-to-business contracts in the UK. Simply noting in your reminder that "statutory interest under the Late Payment of Commercial Debts Act 1998 now applies" is often enough to move an invoice to the top of a client's payment run.

Keeping the Relationship Intact

The fear of damaging a client relationship is the most common reason invoices go unchased, so it is worth separating the message from the manner.

• Be factual, not emotional. "Invoice 1042 is now 14 days overdue" invites action; "we are disappointed" invites defensiveness.
• Escalate the process, not the tone. Each step up the ladder can remain perfectly courteous. Firmness lives in the escalation, not the adjectives.
• Offer a call. Some delays hide genuine problems — a dispute over the work, a client's own cash crunch. A ten-minute conversation can surface and solve what three emails cannot.
• Act on patterns. A client who pays every invoice at 60 days is telling you something about their cash flow. Adjust your own: shorter terms, deposits, or a conversation about how you work together.

Making It a Bookkeeping Discipline

The businesses that rarely suffer bad debt are not the ones with the sharpest solicitors — they are the ones with tidy processes. In practice that means:

1. Reconcile your sales ledger weekly so nothing goes unnoticed
2. Automate reminders through your accounting software — most platforms will send scheduled chases without you lifting a finger
3. Review aged debtors monthly and flag anything over 30 days for action
4. Watch your debtor days — if the average time to payment is creeping up, your terms may need tightening before the year-end review

Late payments will never disappear entirely, but with clear terms, a staged escalation and the statutory rights already on your side, collecting what you are owed becomes a routine administrative task rather than a dreaded conversation. If you would like help setting up reminder schedules or reviewing your invoicing terms, do get in touch — it is exactly the sort of housekeeping we enjoy.