Tax Investigation Service

Protection from the professional fees associated with a tax investigation

Subscribe to TIS here

Tax Investigation Service is available to clients of Hillier Hopkins only

HMRC are using sophisticated software to target taxpayers and a tax investigation can cost money even if you’ve done nothing wrong. Our Tax Investigation Service gives you peace of mind by protecting you from those costs.

Our Tax Investigation Service (TIS) covers you for our professional fees that result from a HMRC investigation, with zero excess and £100,000 fees indemnity.

It is available to clients where we prepare their personal tax, corporation tax or VAT returns. Although it is an optional service, we strongly recommend clients take advantage of it.

How much does it cost?

Fees vary depending on your situation and as cover runs until 5 April fees are pro-rated if you subscribe mid year – check our TIS Portal for the latest prices. (Prices are for businesses with an annual turnover up to £25m. If above, then please contact us on for a quote.)

The service is provided through our TIS partners, Croner- i Taxwise Protect and fees must be paid direct to them. If you would like to cover 3 or more business there are discounts available, please contact us on for a bespoke quotation.

What’s covered?

Our fees up to £100,000 incurred representing clients in the event of any compliance check, visit or investigation started by HMRC regarding compliance with:

  • Corporation Tax Self-Assessment
  • National Insurance
  • VAT
  • Income Tax Self-Assessment
  • Construction Industry Scheme
  • National Minimal Wage
  • PAYE and P11D
  • IR35
  • Gift Aid Legislation regulations
  • Capital Gains Tax
  • Inheritance Tax
  • Stamp Duty (Including Land Tax)
  • SEISS, CJRS and late filing returns amendments that HMRC have implemented during the pandemic.

Business advice helplines

Business also have telephone access to specialist HR, Health & Safety and Commercial legal advisors.  Please note that the legal advice line is not indemnified.

What isn’t covered

  • Fraud
  • Criminal prosecutions
  • Tax avoidance schemes
  • Deliberate omissions
  • Tax, fines, penalties & interest due
  • Enquiries commencing outside of the period of service


The policy does cover professional fees incurred in respect of a local review of the enquiry and preparation and representation at an appeal to the First-tier Tribunal, Upper Tribunal or Employment Tribunal and any appeal against such a tribunal’s decision. After an appeal to the Upper Tribunal where there is no right of appeal to the Tribunal, the Policy will cover an application for Judicial Review (subject to a maximum indemnity of £5,000).

Subscribe to our Newsletter