Chasing an invoice
without the awkwardness.

Chase a late invoice in escalating steps: a polite reminder on the due date, a firmer one a week later, then a phone call. UK businesses have a statutory right to charge interest and a fixed recovery cost on late commercial payments, which is worth stating before you need it.

General guidance for UK businesses, not tax advice. Rates, thresholds and deadlines change — check gov.uk, or ask your accountant, before acting on anything here.

LAST REVIEWED 27 AUGUST 2026 · BIZZLE

What actually works?

  1. 1

    Prevent it at the quote

    Payment terms agreed before the work starts, in writing, with the due date on the invoice as a date rather than a number of days. Most late payment is ambiguity rather than refusal.

  2. 2

    Invoice immediately

    The single biggest cause of late payment is late invoicing. An invoice sent the day the job finished is paid sooner than one sent three weeks later, every time.

  3. 3

    Remind on the due date

    Short, friendly, no accusation. Most invoices are not deliberately unpaid — they are sitting in someone's inbox behind forty other things.

  4. 4

    Follow up within a week

    Firmer, with the amount, the due date and how many days overdue. Ask a direct question: when will this be paid?

  5. 5

    Telephone

    Email is easy to ignore; a call is not. Ask who processes payments and when their payment run is. Often the answer solves it.

  6. 6

    State your statutory rights

    Commercial debts carry a statutory right to interest and a fixed recovery charge. Saying so, calmly and factually, changes the tone of the conversation.

What can you charge on a late commercial payment?

For business-to-business debts, the Late Payment of Commercial Debts legislation gives you a right to statutory interest at the Bank of England base rate plus 8 percent, plus a fixed sum for recovery costs that rises with the size of the debt.

You do not have to charge it, and many people never do. What matters is that the right exists and that your customer knows you know. Mentioning it in a payment terms line on every invoice is free and quietly effective.

Reasonable costs of recovery above the fixed sum can also be claimed in some circumstances.

When it is still not paid

  • Send a formal letter before action, setting out the debt, the deadline and what happens next. Many disputes end here.
  • The small claims track handles most modest debts without a solicitor, and the fee is recoverable if you win.
  • Weigh the relationship. A customer worth keeping is sometimes worth a payment plan; a customer who does this routinely is not a customer.
  • Stop working. Continuing to deliver for someone who has not paid is how a small debt becomes a large one.

How does software change this?

The reason invoices go unchased is not that chasing is difficult. It is that it is uncomfortable, and it competes with billable work, and it always loses.

Automated chasing removes the decision. The reminder goes out on schedule whether or not you feel like sending it, in a tone you set once, and you only get involved when something needs a human. For most small businesses this is the single highest-value piece of automation available.

TERMS USED ON THIS PAGE

COMMON QUESTIONS

Questions people ask.

How long before an invoice is officially late?

The day after the due date you agreed. Where nothing was agreed, commercial debt legislation implies 30 days from delivery or from the invoice date, whichever is later.

Can I charge interest on a consumer invoice?

The statutory commercial regime applies to business-to-business debts. For consumers, any interest has to be a term of your contract and must be fair — the rules are different and stricter.

Will chasing lose me the customer?

Occasionally, and usually one you are better off without. Polite, consistent chasing is normal commercial behaviour, and businesses that pay reliably are not offended by it.

Can I charge interest if my invoice never mentioned it?

For a business customer, yes — the statutory right exists whether or not you wrote it down, though a customer who has never seen it in your terms will push back harder. For a consumer, no: any charge has to be a fair term of the contract they actually agreed to.

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