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CIS Monthly Return Reminders
Asks contractor clients for their subcontractor payments when the tax month ends, and warns you before each CIS return is due
£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
- CIS Monthly Return Reminders — cis-return-reminders.zip
- Secure Stripe checkout — we never see your card details
- Your files appear on your order page the moment payment clears
About this product
A CIS return is due on the 19th of every month, whether or not anyone was paid, and HMRC charges £100 for a return even one day late. This makes sure the information arrives in time for you to file.
You keep one row per contractor client. On the 6th - the day after the tax month ends - it asks each one for the details of every payment to subcontractors: who, the gross amount, materials, and the deduction. On the 10th, if 'Records in for' has not been updated, it reminds them, naming the penalty. You are warned five days and two days before the 19th, and the day after if a return is missed.
A client marked as not filing nil returns carries a reminder that a month with no subcontractors still needs a nil return or an inactivity notice. Mark a client Inactive and it leaves them alone.
It is a reminder system, not advice: it works out dates from what you put in the sheet, using the rules as they stood in September 2026. You remain responsible for your filings. When a rule or rate changes, the setting that holds it is on the Settings tab.
Features
- Asks for subcontractor payments on the 6th and reminds on the 10th - both yours to change
- Your warning 5 and 2 days before the 19th, every client in one email
- Names HMRC's £100 penalty in the reminder
- An unfiled month stays on the list until it is filed
- Reminds you that a quiet month still needs a nil return
- 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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