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Payments on Account Reminders
Reminds each Self Assessment client what they owe HMRC before 31 January and 31 July, with the amount and their payment reference
£19.00
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Fee Chaser with Late Payment Interest
Chases unpaid fees on a schedule and, for business clients, works out the statutory interest and compensation you are entitled to
£29.00
How you’ll receive this product
Available to download as soon as your payment is confirmed
This is delivered digitally. As soon as your payment is confirmed you will get a private link to your files on your order page. Keep the link to that page — it is where your purchase lives.
You receive
- Fee Chaser with Late Payment Interest — fee-chaser-late-interest.zip
- Secure Stripe checkout — we never see your card details
- Your files appear on your order page the moment payment clears
About this product
Accountants are owed money too, and most never claim the interest the law allows on a late business invoice. This chases your fees and puts the figures in front of the client.
You keep one row per invoice. It sends a polite note three days before the due date, another on the day, then chases at 7, 14 and 30 days overdue. For a business client, the second and final chases state the interest they owe under the Late Payment of Commercial Debts (Interest) Act 1998: 8% over the Bank of England reference rate - 11.75% from July to December 2026 - worked out to the day, plus the fixed compensation the Act allows: £40 on a debt under £1,000, £70 up to £9,999.99, and £100 above. A column on the sheet shows the interest to date on every overdue business invoice, every morning.
Interest is only ever added where you put YES in 'Business client' - it cannot be claimed from someone acting privately, and a blank is treated as no. If your engagement letter sets its own rate, put that in and it is used instead.
The reference rate is a setting. It changes each January and July, and the Settings tab says where to check it.
Features
- Chases before, on and after the due date, at intervals you choose
- Statutory interest at 8% over the reference rate, worked out to the day and to the penny
- Fixed compensation of £40, £70 or £100 by size of debt
- Only for business clients you mark YES - never assumed
- Your own contract rate, if your engagement letter sets one
- An 'Interest to date' column kept current every morning
- Every message is recorded against the client, the deadline and its date, so nothing is sent twice and next quarter's reminders are new ones
- Starts in test mode - everything comes to you until you say otherwise
- Warns you when a deadline lands on a weekend or bank holiday, and names the working day before
- The wording lives on a tab in the sheet, so you change it without touching code
- Runs inside your own Google account. No client data is sent to us or to anyone else
Product questions
No. It works out the deadlines and sends reminders. It does not submit anything to HMRC or Companies House - you or your clients still do that.
A Google account - a free Gmail account works, and so does Google Workspace - and Google Sheets in your web browser. Nothing is installed on your computer.
Open a new Google Sheet, go to Extensions > Apps Script, paste in the script from your download and run install once. It builds the tabs, the settings and the daily schedule for you. The setup guide shows every click.
No. Test mode is on when you install it: every message comes to you first, marked [TEST], with a line saying who it would have gone to. You switch test mode off in the Settings tab when you are happy with it.
Google asks you to approve any script that reads your sheet or sends email from your account. Because the script runs in your own account rather than as a published app, Google shows its standard warning screen. The setup guide explains each button.
No. Everything stays inside your own Google account. The script cannot contact any other website, and we never see your sheet or your emails.
It stops at 50 a day unless you change that in Settings. Google's own limit is about 100 recipients a day on a free Gmail account and 1,500 on Google Workspace.
No. You pay once. It runs on Google's free Apps Script service in your own account, so there is nothing to renew.
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