Tax Document Threat Level
Tax season means millions of UK taxpayers email their most sensitive financial documents to accountants every year. Your tax return is a goldmine for identity thieves — it contains everything they need to steal your identity, file fraudulent returns, or drain your accounts.
Your Tax Return = Identity Theft Goldmine
What Criminals Get:
- • Full name and date of birth
- • National Insurance number
- • Complete address history
- • Bank account details
- • Employment and income data
What They Can Do:
- • Open credit accounts in your name
- • File fraudulent tax returns
- • Access existing bank accounts
- • Apply for loans and mortgages
- • Claim benefits fraudulently
The 3-Minute Security Fix
You don’t need to be a tech expert to share documents securely. This simple three-step process takes less time than composing an email — and eliminates the security risks entirely.
Secure Document Sharing Process
Generate a password-protected sharing link that expires after 48 hours
Files are encrypted before leaving your device — never stored unprotected
Send the link via email, and the password via text message or phone call
Result: Your accountant gets secure access, files auto-delete after download, and you get a confirmation receipt.
Share Tax Documents Securely
AES-256 encrypted upload links. Documents auto-delete after download. No accounts needed.
What Your Accountant Actually Needs
Most people over-share when sending documents to their accountant. Understanding exactly what’s needed reduces your exposure and speeds up the process.
Documents by tax situation
Ask your accountant for a specific document checklist before you start gathering paperwork. This prevents unnecessary sharing and ensures you’re not missing anything critical for your return.
Emergency Response
If you’ve already emailed tax documents as plain attachments, don’t panic — but do act quickly. The sooner you secure your accounts, the less damage can be done.
If You Already Emailed Tax Documents
- 1. Change all account passwords immediately — especially HMRC, banking, and email
- 2. Enable 2-factor authentication on every account that supports it
- 3. Monitor your credit report weekly for any new accounts opened in your name
- 4. Alert your bank’s fraud department about the potential identity theft risk
- 5. Ask the recipient to permanently delete the email and confirm removal
Going forward, establish a secure sharing process with your accountant. Most modern practices welcome encrypted uploads — it reduces their own GDPR compliance burden and protects both parties.
Send Your Tax Documents Securely to Your Accountant
Don't email tax returns, P60s, or bank statements. Send them securely to your accountant. They'll appreciate the professionalism and may start using FileSeal for other clients.
Written by the FileSeal security and compliance team. We specialise in document security, GDPR compliance, and data protection for UK professionals. Our guides are reviewed by industry practitioners and updated regularly.