HMRC has issued a fresh warning to millions of taxpayers as the Self Assessment season approaches. The tax authority is reminding individuals that they need their 10-digit Unique Taxpayer Reference (UTR) to complete their tax return.
With the January 31 deadline looming, millions are expected to submit their returns or face penalties. An immediate £100 fine is imposed for missing the deadline, even if no tax is owed.
In a YouTube video, HMRC advises taxpayers to use the official HMRC app to find their UTR. The app is described as "a quick and easy way to find your self assessment unique taxpayer reference" and is free and secure.
The app offers two methods to locate the UTR: by tapping on personal details or through the Self Assessment section in the main menu. Users can copy the number and share it with tax agents, accountants, or bookkeepers.
HMRC emphasises that using the app means taxpayers "won't need to call us" to find their UTR. The app also displays tax owed and payment due dates, and allows payments to be made.
Access to the app is secured via a six-digit PIN, facial recognition, or thumbprint. It is available for download on Google Play for Android devices and the App Store for Apple products.



