HMRC Investigation Support Accountant Hiring Guide
Receiving a letter from HMRC can be stressful. Whether it is a routine compliance check, an aspect enquiry into a specific entry on your return, or a full Code of Practice 9 investigation into suspected fraud, having expert representation is essential. An investigation specialist understands HMRC's powers, the enquiry process, disclosure requirements, penalty regimes, and negotiation strategies. They act as your representative, handle all HMRC correspondence, attend meetings on your behalf, and work to achieve the best possible outcome.
General guidance reviewed 12 July 2026 · How we review content
Browse Public-Record ListingsWhat to Check Before Hiring
The right hmrc investigation support accountant should be clear about scope, records needed, deadlines, and how they keep you compliant after the first conversation.
Relevant client experience
Clear scope and pricing
Named day-to-day contact
Pricing Context
Fees vary by complexity, record quality, deadlines, and whether you need recurring support or one-off advice.
Compliance Context
Ask what records are needed, who is responsible for submissions, and how the firm confirms deadlines and filing evidence.
HMRC Investigation Support FAQs
Why has HMRC opened an enquiry into my return?
HMRC may open an enquiry randomly, because something on your return looks unusual, because of information from third parties, or as part of a sector-wide campaign. A routine compliance check does not mean HMRC suspects wrongdoing.
What penalties can HMRC charge?
Penalties range from 0% to 100% of the tax underpaid, depending on whether the error was careless (up to 30%), deliberate (up to 70%), or deliberate and concealed (up to 100%). Voluntary unprompted disclosure reduces penalties significantly. Reasonable care is a complete defence.
Should I use my accountant or a tax investigation specialist?
For routine compliance checks, your regular accountant is usually sufficient. For more serious enquiries (aspect enquiries with large adjustments, Code of Practice 8 or 9 investigations), a specialist with HMRC investigation experience is strongly recommended.
Check the official guidance
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Choosing an accountant for hmrc investigation support?
Use the checks and official sources above, then browse public-record listings and confirm service availability directly with each firm.