HMRC Sentinel Alerts
Real-time monitoring of your HMRC obligations. Get alerts before deadlines become penalties. Never miss a VAT return, self-assessment deadline, or PAYE payment date again — starting from just £39/month.
What It Does
Your HMRC obligations, monitored 24/7
HMRC Sentinel Alerts is a continuous compliance monitoring layer that watches your tax calendar on your behalf. Rather than relying on memory, diary entries, or annual reminders from your accountant, the system tracks every relevant deadline across your business profile — VAT quarters, payroll submission dates, PAYE payment windows, self-assessment filing and payment deadlines, and corporation tax due dates.
Alerts are triggered at meaningful intervals ahead of each deadline — not just the day before, but typically 30 days, 14 days, and 7 days in advance — giving you time to prepare, gather information, and take action. If a payment is approaching and your cash position looks tight based on your accounting data, you'll receive a prioritised alert flagging both the deadline and the potential risk.
The service also includes a monthly compliance report: a one-page summary of every HMRC obligation that fell due in the previous month, every action taken or required, and a forward look at what's coming in the next 60 days. This document is designed to be kept on file, giving you an auditable record of your compliance posture.
For businesses with multiple tax registrations — VAT, PAYE, corporation tax, self-assessment — tracking deadlines manually is a genuine compliance risk. HMRC Sentinel removes that risk entirely. Penalties for late VAT submissions alone can reach hundreds of pounds per filing period. For most businesses using this service, the cost pays for itself within a single avoided penalty.
HMRC Sentinel is the ideal entry point into the NVH AI add-on suite. It requires minimal setup — just read-only access to your accounting software and a one-time review of your HMRC registrations — and can be active within 24 hours of sign-up.
What's Included
Everything in HMRC Sentinel
VAT Deadline Alerts
Automatic reminders ahead of every VAT quarter end, filing deadline, and payment date — including MTD-compliant quarterly obligations.
PAYE & NIC Reminders
Monthly PAYE payment reminders, RTI submission alerts, and employer NIC due dates — so your payroll never slips past its deadline.
Self-Assessment Timeline
Full self-assessment calendar including payment on account dates, 31 January filing and payment, and 31 July payments on account.
Penalty Risk Flagging
If a deadline is approaching and your accounts suggest cash pressure, the system flags a penalty risk alert so you can act before it becomes a problem.
Monthly Compliance Report
A clean, one-page PDF delivered each month summarising all obligations due, actions taken, and a 60-day forward compliance calendar. Shareable with your directors or finance team.
Getting Started
Up and running in 24 hours
Book a 15-minute setup call
We review your HMRC registrations (VAT, PAYE, Corporation Tax, Self-Assessment) and confirm the obligations to monitor.
Share read-only accounting access
Grant NVH read-only access to your accounting software (Xero, QuickBooks, Sage, FreeAgent, or share a spreadsheet). We never write to your accounts.
We configure your compliance calendar
NVH builds your personalised HMRC obligation timeline and configures alert thresholds based on your business type and payment history.
First alert delivered within 24 hours
Your first compliance alert or upcoming deadline summary is sent within 24 hours of activation. Your monthly report follows on the first of each month.
Ideal For
Who benefits most from HMRC Sentinel?
Small Businesses
Any registered VAT business or limited company with HMRC obligations. Ideal if you don't have a full-time finance team.
Sole Traders & Freelancers
Self-employed individuals with self-assessment obligations who want to stop worrying about missing a payment on account or a filing date.
Businesses Changing Accountants
If you're in the process of switching accountant, HMRC Sentinel ensures nothing falls through the gap during the transition period.
Live Demo
See your personalised HMRC deadline calendar
Tell us about your business and see exactly which alerts you would receive.
Select your business type:
Select your business type above to see your personalised deadline calendar.
Sample WhatsApp alerts you would receive:
NVH Intelligence Consultants
📅 30 DAYS TO GO: Your Self Assessment tax return and payment are due on 31 January.
What you owe (estimated): £4,840
Documents needed from you by: 15 January
Reply YES to confirm you are ready to start.
10:14 ✓✓
NVH Intelligence Consultants
⏰ 14 DAYS TO GO: Reminder — Self Assessment due 31 January. Documents still outstanding.
Please upload by 15 January to avoid a late filing penalty (£100 minimum).
Reply DONE when uploaded.
09:02 ✓✓
NVH Intelligence Consultants
✅ FILED: Your Self Assessment has been submitted to HMRC. Reference: SA2025/847291.
Payment of £4,840 due to HMRC by 31 January.
Pay at: gov.uk/pay-self-assessment
16:55 ✓✓
This demo uses fictional data for illustration purposes only. Your NVH HMRC Sentinel will be calibrated to your actual business, deadlines, and estimated tax liabilities.
HMRC Sentinel Alerts
exc. VAT · No lock-in · Cancel anytime · Active in 24 hrs
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