How to Add and Edit Your UTR and NI Number

How to Add and Edit Your UTR and NI Number
Charlotte Baroukh

Charlotte Baroukh

Tax Expert @ Pie

5 min read

Updated: 28 Oct 2024

5 min read

Updated: 28 Oct 2024

Adding and Updating Your UTR and NI Number

Keeping your personal tax information up to date in the Pie Tax App is essential for submitting accurate and timely self-assessment tax returns. Whether you need to add or edit your Unique Tax Reference (UTR) number or National Insurance (NI) number, this guide will show you how to do it quickly and easily. Your UTR number is crucial for submitting your self-assessment to HMRC, and without it, you won’t be able to file your claim. If you don’t yet have a UTR number, you can obtain one by contacting HMRC or registering for self-assessment online.


Follow these simple steps to ensure your tax information is accurate and ready for your next submission.

Your Step-by-Step Guide

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Access Your Profile

First, open the Pie Tax App on your device. On the homepage, tap the avatar in the top left corner to access your profile.

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Navigate to Profile Info

Once you're in your profile, tap on 'Profile Info' to view and manage your personal details.

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Select 'Personal Tax Info'

In the Profile Info section, tap on 'Personal Tax Info'. This will bring up the section where you can view and edit your tax details.

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Edit Your UTR and NI Number

To make changes, tap the ‘Edit’ button. A pop-up will appear where you can update your UTR number (a 10-digit number) and your National Insurance (NI) number (which consists of 2 letters, 6 numbers, and a final letter). Tap on the field you wish to edit, enter the correct information, and then tap ‘Save’.

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Confirm and Review

After saving your changes, return to the Profile Info section to review your updated personal tax information. Make sure everything is accurate and up-to-date to ensure smooth processing of your self-assessment tax return.

Troubleshooting Common Issues

Sometimes, issues can arise during the process. Here are some common problems and solutions:

<h5>UTR Number Not Accepted</h5><p><br></p><p>Make sure your UTR number is precisely <strong>10 digits</strong> long, with no spaces or letters included.</p>

UTR Number Not Accepted


Make sure your UTR number is precisely 10 digits long, with no spaces or letters included.

<h5>Error Saving Changes</h5><p><br></p><p>Ensure all fields are correctly filled and your internet connection is stable before saving.</p>

Error Saving Changes


Ensure all fields are correctly filled and your internet connection is stable before saving.

<h5>NI Number Format Issues</h5><p>Verify that your NI number follows the correct format: <strong>2 letters, 6 numbers, and 1 final letter,</strong> without any spaces.</p>

NI Number Format Issues

Verify that your NI number follows the correct format: 2 letters, 6 numbers, and 1 final letter, without any spaces.

Frequently Asked Questions

How do I access my profile to update my UTR and NI number?

On the homepage of the Pie Tax App, tap the avatar in the top left corner to access your profile.

What should I do if my UTR number isn’t being accepted?

Make sure your UTR number is exactly 10 digits, without any spaces or letters.

How can I correct errors when saving my changes?

Check that all fields are correctly filled and your internet connection is stable before attempting to save your changes.

What format should my NI number be in?

Your NI number should be in the format of 2 letters, 6 numbers, and 1 final letter, with no spaces.

What steps should I follow to ensure my changes are saved correctly?

After entering your UTR and NI number, tap ‘Save’ and then return to the Profile Info section to review and confirm that your details are correct.

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