The Quiet Client, the Overdue Invoice: How to Chase Payment and Keep the Relationship

An invoice goes past its due date. Then a week. Then two. The client hasn’t disappeared exactly — they’ve just gone quiet. You don’t want to be the person who sends increasingly stern emails, but you also can’t run a business on maybes.

Late payment is a fact of UK small business life, and chasing it is not rude. It is part of running a tidy operation. The trick is to be firm about the money without making the relationship feel like a hostage situation.

Start with the assumption of admin, not villainy

Most late payments are boring. The invoice landed in the wrong inbox, the person who approves it is on leave, or the finance team pays in a weekly run and yours missed the cut. Open with a friendly, specific reminder rather than a warning.

Template: first reminder

Hi [Name],
Hope you’re well. Just a quick note that invoice [number] for [amount] was due on [date]. I haven’t seen it come through yet. Could you let me know when we should expect payment? Happy to re-send the invoice if that helps.
Thanks, [Your name]

Keep it short, name the invoice, and ask a question. That makes it easy to reply.

Make the second nudge firmer

If the first email gets silence, follow up after a few working days. This time, attach the invoice again and ask for a payment date. A date is more useful than a promise to ‘look into it’.

Template: second reminder

Hi [Name],
Following up on invoice [number] for [amount], which was due on [date]. It’s now [X] days overdue. Could you confirm a payment date this week? If there’s an issue with the invoice, let me know and I’ll help sort it.
Best, [Your name]

Notice what this does: it is clear about the overdue status, but it still leaves room for the client to explain a problem. That keeps the door open.

Put it in writing, with a deadline

If two reminders haven’t worked, move to a formal payment demand. This does not have to be aggressive. It should be a clear letter or email that sets out the amount, the original due date and a final deadline — usually seven days.

Template: formal demand

Dear [Name],
Despite previous reminders, invoice [number] for [amount] remains unpaid. It was due on [date] and is now [X] days overdue.
Please arrange payment by [date — usually seven days ahead]. If payment has already been made, please send the remittance advice so I can update my records.
If I don’t hear from you by [date], I may need to consider statutory interest and recovery action. I’d much rather resolve this directly.
Yours, [Your name]

That last line matters. It is honest about the next step without being theatrical.

Statutory interest and compensation

For business-to-business debts, the Late Payment of Commercial Debts (Interest) Act 1998 gives you a statutory right to claim interest on late payment, unless your contract says otherwise. The rate is 8% above the Bank of England base rate. You can also claim fixed compensation — currently £40 for debts up to £999.99, £70 for debts from £1,000 to £9,999.99, and £100 for debts of £10,000 or more — plus reasonable recovery costs in some cases.

You do not have to claim it. In fact, sometimes the wisest move is to mention it as a possibility rather than pile it onto an already strained relationship. But it is useful to know the rules exist, especially if a client is routinely late.

Protect the relationship while protecting your cash

Chasing money is easier if you separate the person from the process. A few habits help:

• Keep it private. Never chase a client in a public forum or on social media.
• Use one channel. If you started by email, keep the paper trail by email rather than switching between calls and messages.
• Offer a payment plan if it’s genuine. A client in temporary difficulty may pay in instalments. Get the plan in writing.
• Pause work if the debt is growing. You can be sympathetic and still stop additional work until the account is cleared.
• Document everything. Dates, amounts, reminders and responses. If you later need to recover the debt, the trail matters.

When to consider debt recovery

If a formal demand passes without payment or a credible plan, you have options. For smaller debts, the small claims track — often through Money Claim Online in England and Wales, with equivalents in Scotland and Northern Ireland — can be a practical route. A solicitor’s letter or a debt recovery agency may make sense for larger amounts.

Before you go down that road, do a quick cost-benefit check. Recovery takes time, and even a court judgment does not guarantee payment. Sometimes a sensible settlement is better than a perfect victory.

Cash-flow tips for the gap

Late payment hurts most when it lands in a thin month. A few buffers help:

• Invoice promptly, ideally the same day you deliver the work.
• Ask for a deposit on larger projects.
• Shorten payment terms from 30 days to 14 where you can.
• Set up automatic invoice reminders in your accounting software.
• Keep a cash reserve for at least one month of fixed costs.
• Review your debtor list weekly, not just when cash gets tight.

The bottom line

Chasing an overdue invoice is not a sign that you’re difficult. It is a sign that you run your business properly. Start politely, get firmer by stages, keep a written trail and don’t let a quiet client become a permanent interest-free lender. Most relationships survive a firm reminder — and the ones that don’t were probably costing you more than the invoice.