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HMRC Enquiries

Being scrutinised by HMRC is not fun for anyone.  Our knowledgeable tax investigations specialists will represent you and safeguard your rights.   

We know HMRC enquiries are stressful.


The enquiry regime is complex. 

The financial risk of extra tax, interest and penalties to pay is worrying. The pressure is compounded by the extra time it takes to deal with HMRC.

We have the expertise to deal with HMRC on your behalf.   

How we can help you

Tax is complicated.

Self-assessment enquiries are not immune from that complexity so it may be that technical or procedural errors have been made by HMRC which an experienced specialist can identify. These may appear small, but they can impact on the chosen strategy and the validity of the entire enquiry.

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Case studies: HMRC enquiries

Validity of enquiry

The client’s accountant had provided data to HMRC without challenge. HMRC subsequently claimed adjustments were required, prompting the client to seek a second opinion from Crowe. We identified that the enquiry notice itself was invalid, and as a result, HMRC closed the enquiry with no changes to the tax return.

Closure notice

HMRC opened an enquiry into one family member and then attempted to expand it into a wide-ranging review of the family’s businesses and financial affairs. Crowe provided only information considered to be genuinely relevant, or ‘reasonably required’, and successfully applied to the tax tribunal for a closure notice. The tribunal described HMRC’s continued questioning as a fishing expedition and ordered the enquiry to be closed.
The client’s accountant had provided data to HMRC without challenge. HMRC subsequently claimed adjustments were required, prompting the client to seek a second opinion from Crowe. We identified that the enquiry notice itself was invalid, and as a result, HMRC closed the enquiry with no changes to the tax return.
HMRC opened an enquiry into one family member and then attempted to expand it into a wide-ranging review of the family’s businesses and financial affairs. Crowe provided only information considered to be genuinely relevant, or ‘reasonably required’, and successfully applied to the tax tribunal for a closure notice. The tribunal described HMRC’s continued questioning as a fishing expedition and ordered the enquiry to be closed.

Company enquiries

HMRC opened an enquiry into the holding company of a group and asked extensive questions about entries in the consolidated accounts, which reflected results of the subsidiaries that were not under enquiry and for which HMRC was out of time to open additional enquiries. We reminded HMRC of the relevant enquiry legislation and responded only in relation to the holding company’s own financial statements. HMRC then closed the enquiry with only minor amendments required.

Reasonably required 

During an enquiry into a Limited Liability Partnership (LLP), HMRC requested a copy of the LLP Agreement. We argued that the particular LLP Agreement was not reasonably required to check the LLP tax return as it would not affect the LLP’s or individual members taxable profits and contained sensitive governance clauses irrelevant to tax. HMRC ultimately closed the enquiry without any amendments.
HMRC opened an enquiry into the holding company of a group and asked extensive questions about entries in the consolidated accounts, which reflected results of the subsidiaries that were not under enquiry and for which HMRC was out of time to open additional enquiries. We reminded HMRC of the relevant enquiry legislation and responded only in relation to the holding company’s own financial statements. HMRC then closed the enquiry with only minor amendments required.
During an enquiry into a Limited Liability Partnership (LLP), HMRC requested a copy of the LLP Agreement. We argued that the particular LLP Agreement was not reasonably required to check the LLP tax return as it would not affect the LLP’s or individual members taxable profits and contained sensitive governance clauses irrelevant to tax. HMRC ultimately closed the enquiry without any amendments.

We're here to help


We can guide you through the complexity and making sure you cooperate when required while preventing HMRC from "over exercising" its authority in order to address and finally resolve HMRC's issues.

Our experienced and award-winning Tax Resolutions team can help you navigate the process and ensure you meet your obligations.

John Cassidy
John Cassidy
Partner, Head of Tax ResolutionsLondon
Hayley Ives
Hayley Ives
Partner, Tax ResolutionsLondon

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We are professional advisors who specialise in helping our clients with HMRC Disputes, Investigations and Disclosures.  

If you would prefer to speak to us, please call our free confidential helpline +44 (0)800 656 9900.

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