We take the stress and complexity out of dealing with the tax authorities.
Jon Preshaw Tax Ltd is a boutique practice of former HMRC and Big 4 tax experts.

Managing HMRC Investigations

Making Disclosures to HMRC

Resolving Disputes with HMRC

Services for Professional Advisers

Proactively Managing Tax Risk

Advising on HMRC Powers and Procedures
Our people leverage their extensive expertise to help clients efficiently manage interactions with HMRC.
Latest updates and insights from our experts in tax dispute resolution.
HMRC nudge letters
HMRC will shortly begin issuing letters to non-UK companies which own UK property. There will be two types of letter – Letters to companies which may be subject to tax as non-resident landlords or subject to tax under the ATED regime. HMRC also note that such income...
Code of Practice 9 enquiries and how we can help
What is Code of Practice 9? HMRC will initiate an investigation under their Code of Practice 9 (COP9) in cases where they suspect tax fraud. HMRC does not usually disclose what their suspicions are, but you can expect that they will have carried out detailed research...
HMRC interest and claims to mitigate
GAAR Panel Ruling– can we get rid of Part 7A now (please)?
This GAAR panel ruling can’t have been a surprise to anyone. However, I can’t really see any basis on which the transactions could realistically have escaped Part 7A anyway. The GAAR appears to have been applied in advance of a 'normal' assessment and appeal process,...