ChaseClock sends polite, automatic reminders for overdue invoices in Xero, FreeAgent and QuickBooks. It also works out the statutory interest and fixed compensation UK law lets you claim when another business pays late.
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You did the job and sent the invoice. Now you're writing awkward "just following up" emails, keeping a spreadsheet of who owes what, and leaving money you're legally owed on the table because claiming interest feels confrontational.
Source: London Economics research for the Department for Business and Trade and the Office of the Small Business Commissioner, published 31 July 2025 (smallbusinesscommissioner.gov.uk).
Set it up once. ChaseClock does the remembering and the maths. You stay in control of every message.
Link Xero, FreeAgent or QuickBooks. ChaseClock reads your unpaid invoices and due dates, and stops chasing the moment one is marked paid.
Choose a schedule, from a friendly nudge before the due date to a firm final notice, written in plain British English. Set it per client, so your best customers never get a stiff letter.
When an invoice to a business goes overdue, ChaseClock works out the statutory interest and fixed compensation and can add them to the reminder. Nothing goes out with interest unless you approve it.
Under the Late Payment of Commercial Debts (Interest) Act 1998, when another business pays you late you can usually claim:
The base rate used is the one in force on 30 June or 31 December just before the debt became late, and it stays fixed for that debt. If you didn't agree a payment date, the payment is late 30 days after the customer receives the invoice or you deliver, whichever is later. It doesn't apply to consumers, or where your contract already sets its own substantial remedy for late payment.
| Amount of debt | You can charge |
|---|---|
| Up to £999.99 | £40 |
| £1,000 to £9,999.99 | £70 |
| £10,000 or more | £100 |
Example: a £2,400 invoice 21 days late at 11.75% = £2,400 × 0.1175 × 21 ÷ 365 = £16.22, plus £70 compensation.
Source: GOV.UK, "Late commercial payments: charging interest and debt recovery". Not legal advice.
A Bill introduced in the House of Lords on 19 May 2026 proposes capping most business-to-business payment terms at 60 days, and making contract terms that exclude or reduce statutory interest void. It is not law yet and its details could change. If it passes, claiming interest becomes a normal part of getting paid, and ChaseClock will be ready.
See what an overdue invoice is costing you. Uses the correct Bank of England reference rate for the date your invoice became late.
Applies to business-to-business debts only, where your contract doesn't set its own substantial remedy for late payment. Simple (not compound) interest. This is a guide, not legal advice.
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Indicative launch pricing. You won't be charged anything by joining the waitlist. Founding members keep their price for life.
For business-to-business debts, it's a legal right under the 1998 Act. Whether you use it is up to you. ChaseClock never adds interest unless you switch it on for that client and approve the message.
Reminders are polite by default, and you set the tone and schedule per client. Most late invoices just need a timely nudge. The interest calculation is there for the ones that don't pay after that.
We're planning Xero, FreeAgent and QuickBooks Online. Tell us which one you use when you join, and we'll build for the most-requested first.
Reminders, yes. The statutory interest and compensation only apply to debts owed by businesses, so ChaseClock won't add them to consumer invoices.
A UK software engineer with 20 years' experience who got tired of chasing invoices by hand. It's an independent product, and your feedback shapes what gets built.
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