Debt collection for small business: what you can do before involving a solicitor

Most unpaid invoices don’t require a solicitor. They require a clear process, consistent follow-through, and a willingness to escalate through the right channels in the right order: structured reminders, then a phone call, then a formal letter before action, then small claims court if it comes to that. Save the solicitor for debts large or complex enough to genuinely warrant one.

General guidance for UK small businesses, not legal advice. The statutory interest and court sections below describe UK law specifically; get professional advice for anything substantial.

Before sending any reminder, make sure the debt is actually overdue and undisputed. Check that:

• The invoice went to the right contact and email address.
• Payment terms are clearly stated — “payment due within 30 days of invoice date,” not an unstated assumption.
• No query or dispute got buried in your inbox.
• The amount matches what was agreed in writing.

A surprising number of late payments come down to invoices sent to the wrong person, or terms that were never clearly communicated. Sorting this out first saves everyone time.

One polite email is rarely enough. Most late payments are resolved through a sequence of escalating reminders, not a single message. A structure that works:

1. Friendly reminder (1–3 days after the due date) — assume good faith; maybe they forgot.
2. Firm follow-up (7–14 days overdue) — reference the invoice number, amount and due date clearly.
3. Formal notice (30 days overdue) — state that payment is now significantly overdue and expected within a set number of days.
4. Final notice before escalation (45–60 days overdue) — make clear that further action will follow if payment isn’t received.

Each message should be professional, specific, and free of vague language. “Please settle your outstanding balance at your earliest convenience” is far weaker than “invoice #1042 for £2,400 was due on 1 June 2026 and remains unpaid.”

For the wording at each stage, see our invoice follow-up email templates, and how to chase overdue invoices without ruining the relationship for tone and timing.

Email is easy to ignore. A phone call is much harder to avoid, and it often surfaces things email never would: a dispute the client didn’t bother to raise, a cash flow problem on their end, or confirmation that payment is already being processed.

Keep the call professional and factual. Have the invoice number and amount in front of you, and don’t apologise for calling. Something like “I’m calling about invoice #1042 for £2,400, which was due on 1 June — I wanted to check whether anything is holding up payment” is direct without being aggressive.

If they raise an issue, listen carefully. A dispute doesn’t mean you won’t get paid; it means you need to address it first. How to handle a disputed invoice walks through resolving those situations without conceding ground you don’t need to.

Whatever is said on a call, follow it up in writing. If a client promises to pay by a specific date, send a brief email confirming that. If they raise a dispute, acknowledge it in writing and outline how you plan to resolve it.

This creates a paper trail that matters if you eventually need to escalate. A solicitor, the small claims court, or a debt collection agency will all want evidence that you made reasonable attempts to collect.

If a client is genuinely struggling, a payment plan can beat waiting indefinitely for a lump sum. Two or three instalments over 60 days is often faster and more reliable than holding out for full payment on an uncertain timeline. Put it in writing, with specific dates and amounts, so a missed instalment gives you clear grounds to escalate.

Only offer this once you’ve established the delay is a cash flow issue rather than avoidance. If a client simply isn’t responding, a payment plan offer can reduce urgency on their end.

In the UK, the Late Payment of Commercial Debts (Interest) Act 1998 gives you the right to charge statutory interest on overdue B2B invoices. The rate is 8% above the Bank of England base rate, and you can add a fixed compensation charge of £40, £70 or £100 depending on the size of the debt.

You don’t need a solicitor for this. You can state in your final notice that you’re adding statutory interest from the original due date. Even if you never pursue the extra amount, mentioning it signals that you know your rights and are serious about collecting, which can prompt payment on its own.

A letter before action (sometimes called a letter before claim) is a formal notice telling the debtor you intend to take legal action if they don’t pay within a specified period, typically 7 to 14 days. You can write it yourself. It should include:

• The amount owed.
• The original invoice date and due date.
• Any interest or charges you’re adding.
• A clear payment deadline.
• A statement that you will pursue the matter through the courts if payment isn’t received.

This letter often produces results because it signals that legal action is genuinely imminent. Clients who have been unresponsive for weeks will frequently pay, or at least make contact, when one lands. Keep a copy, and send it by email and recorded post where possible.

If a letter before action doesn’t produce payment, small claims court is often the next step, and you don’t need a solicitor to use it. In England and Wales you can claim up to £10,000 through the small claims track; in Scotland the equivalent is the Simple Procedure for claims up to £5,000.

The process is designed to be accessible without legal representation: you file online, pay a court fee that is recoverable if you win, and the court takes it from there. It isn’t fast and can take several months, but it’s significantly cheaper than instructing a solicitor. The prospect of a county court judgment can prompt payment before a hearing ever happens.

A solicitor becomes worth the cost when:

• The debt is large — typically above £10,000, where the small claims track no longer applies.
• The debtor is a company and you need to consider insolvency proceedings.
• The situation involves a contractual dispute that requires legal interpretation.
• You’ve exhausted every other option and need formal legal pressure.

For most small business debts below that threshold, the steps above are sufficient and significantly cheaper.

One reason debts escalate is simply that business owners are too busy to stay on top of the reminder sequence. An invoice goes 30 days overdue, then 60, and by the time you notice, the client has gone quiet and the relationship has cooled.

Grace Period connects to QuickBooks, Xero, FreshBooks and FreeAgent, detects overdue invoices, and drafts reminders calibrated to how late each one is. When a client replies with a dispute, a question, or a promise to pay, it reads the response, pauses the schedule, and drafts an appropriate reply for you to review. Nothing sends without your approval unless you explicitly opt a stage into auto-send. That keeps the early stages consistent without you having to remember every outstanding invoice.

For a wider look at the tools in this space, see the best accounts receivable software for small business.