Rules That Help Keep All Your Private Tax Details Protected (Tax Identity Protection)

Rules That Help Keep All Your Private Tax Details Protected (Tax Identity Protection)
Charlotte Baroukh

Charlotte Baroukh

Tax Expert @ Pie

3 min read

Updated: 1 Jan 2026

3 min read

Updated: 1 Jan 2026

What you need to know

In today's digital tax world, identity theft isn't just an inconvenience it can wreak havoc on your finances and credit score. Criminals using your details to commit tax fraud can cause lasting damage.


HMRC reported a staggering 73% increase in tax-related identity theft cases just last year. This alarming trend highlights the growing sophistication of fraudsters targeting taxpayers.


Protecting your tax identity isn't complicated, but it is essential. Simple preventative measures can dramatically reduce your risk of becoming a victim.


Pie.tax's real-time monitoring alerts you to suspicious activity on your tax account before damage occurs. Or if you're just here to get to grips with it all, let's break it down!

What exactly is tax identity theft?

Tax identity theft happens when someone uses your personal information to file fraudulent tax returns. They aim to claim refunds that don't belong to them.


Criminals need surprisingly little information to impersonate you to HMRC. Sometimes just your NI number and address can be enough to start causing problems.


The aftermath can be messy. You might discover the fraud when you try to submit your legitimate return, only to be told one has already been filed in your name.


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How tax identity protection works

Tax identity protection involves safeguarding the personal and financial information you use for tax purposes. It creates a security shield around your tax identity.


It includes using strong passwords for your Government Gateway account and being careful about who has access to your personal details. Regular monitoring of your tax records for unusual activity is also crucial.


Protection means knowing how to spot the warning signs of identity theft. Taking quick action if you suspect your details have been compromised can limit damage.

Common tax identity theft schemes in the UK

Fraudsters often send phishing emails that look like they're from HMRC. They ask you to "confirm" your details or claim a refund by clicking a suspicious link.


Another common scam involves criminals creating false Self Assessment accounts using stolen personal information. They then file returns to generate fraudulent refunds.


Some thieves use stolen National Insurance numbers to claim benefits. Others file returns with fabricated income and deduction figures to generate refunds.


Be wary of unexpected phone calls claiming to be from HMRC demanding immediate payment. Real tax authorities don't operate this way.


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Essential preventative measures

Use strong, unique passwords for your Government Gateway and HMRC accounts. Change them regularly and avoid using the same password across multiple sites. Enable two-factor authentication whenever it's available. This extra layer of security makes it much harder for criminals to access your accounts.


Check your Personal Tax Account regularly for any changes or activity you don't recognise. Early detection is key to preventing serious fraud. Only respond to official HMRC communications. Check that emails come from legitimate gov.uk domains and be suspicious of any urgent demands.


Shred documents containing tax or personal information before throwing them away. Your bin is a potential goldmine for identity thieves!


Warning signs your tax identity may be compromised

Watch out for unexpected communications from HMRC about a tax return you didn't file. This is a major red flag that shouldn't be ignored.


Be concerned if you receive tax refunds you didn't claim. Notices about benefits you didn't apply for should also raise immediate concerns. Check for unexplained income showing on your tax records from employers you don't recognise. This could indicate someone working under your identity.


If you can't access HMRC online services because someone else is apparently using your credentials, contact HMRC immediately. This suggests account compromise. Multiple tax returns filed using your details is a clear sign something's wrong. Act quickly if this happens.


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What to do if your tax identity is stolen

Contact HMRC's dedicated fraud hotline immediately. The sooner you report the issue, the better your chances of resolving it quickly.


Report the theft to Action Fraud the UK's national fraud reporting centre. They can provide additional support and guidance. Request a fraud marker on your credit file with all three UK credit reference agencies. This helps prevent further misuse of your identity.


Keep detailed records of all communications regarding the theft. Note dates, times, who you spoke with, and what was discussed. Consider using CIFAS protective registration service for additional protection. This is particularly important if you've been a victim of identity fraud.


HMRC resources for protection

HMRC's Personal Tax Account has built-in monitoring features. These help you spot unusual activity before it develops into full-scale fraud.


Use HMRC's phishing reporting service if you receive suspicious emails. Reporting helps protect others from similar scams. Familiarise yourself with HMRC's official guidance on recognising genuine contact. Their website details how to distinguish legitimate communications from scams.


Take advantage of tax security webinars and online resources provided by HMRC. Staying informed about the latest threats is crucial for protection. I once received a convincing HMRC "refund" email that nearly fooled me. The sender address looked legitimate until I noticed it ended with .org rather than gov uk a close call that taught me to always double-check.


Final Thoughts

Tax identity protection isn't optional in today's digital environment. It's a necessity for everyone who pays tax in the UK. Taking simple preventative steps now can save you countless hours of stress later. The financial losses from tax identity theft can be substantial and difficult to recover.


Regular monitoring of your tax accounts is your best defence. Quick action when you spot something suspicious can prevent escalation. Remember that HMRC will never ask for your personal or financial details via email, text or phone. Approach unexpected communications with healthy scepticism.


Pie tax: Simplifying tax identity protection

You don't have to face tax identity concerns alone. Pie.tax offers real-time monitoring of your tax accounts, alerting you immediately to any unusual activity.


Our multiple-income dashboard provides a clear overview of all your tax affairs in one place. This makes it easier to spot discrepancies quickly before they become problems. We've built secure, direct HMRC filing capabilities that reduce the risk of identity theft. This minimises the number of platforms handling your sensitive information.


Our dedicated security team continuously updates our protection measures against emerging threats. We stay ahead of fraudsters so you don't have to worry. Curious to see how it works? Explore the Pie tax app today.

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