Types of Tax Dispute Requiring Expert Witness Evidence UK

VAT MTIC Fraud

Missing Trader Intra-Community (MTIC) fraud is one of the most complex areas of UK VAT dispute. HMRC denies input tax to businesses connected to fraudulent VAT chains, even innocent traders, where it can demonstrate actual or constructive knowledge of the fraud connection. The knowledge test, established in Mobilx Ltd v HMRC [2010], requires HMRC to prove that the taxpayer knew or should have known that its transactions were connected to MTIC fraud.

Transfer Pricing

Transfer pricing disputes arise when HMRC challenges the pricing of transactions between connected parties, arguing that prices were not at arm's length and adjusting taxable profits accordingly. The arm's length principle, enshrined in UK law and the OECD Transfer Pricing Guidelines, requires that related-party transactions be priced as if the parties were independent.

Employment Related Securities

Employment Related Securities (ERS) disputes under ITEPA 2003 arise where HMRC challenges the valuation placed on shares or options at grant, vesting, or exercise. These disputes are particularly common in growth share arrangements, hurdle structures, restricted share plans, and EMI option schemes where the difference between the taxpayer's valuation and HMRC's assessment can be substantial.

SDLT Property Transactions

Stamp Duty Land Tax (SDLT) disputes requiring expert evidence typically involve HMRC challenging whether a transaction qualifies for multiple dwellings relief (MDR), mixed use classification of properties, GAAR application to SDLT planning arrangements, and the treatment of complex acquisition structures including sub-sales and alternative finance arrangements.

IHT Business Property Relief

Inheritance Tax Business Property Relief (BPR) disputes require expert evidence when HMRC's Shares & Assets Valuation (SAV) team challenges whether a business qualifies as a trading (not investment) business, when the value of BPR-eligible business interests is disputed, or when the excepted assets rule is applied to reduce the relief available.

CGT Share Disposal Valuation

Capital Gains Tax share disposal valuation disputes arise where HMRC's Shares & Assets Valuation (SAV) team provides valuations for CGT purposes on disposal of unquoted shares, and the taxpayer disagrees with the adopted value. The tax expert witness produces independent counter-valuations applying appropriate methodology, earnings multiple, NAV, or DCF, and defends the analysis before the FTT if necessary.

Corporate Tax Avoidance

Corporate tax avoidance scheme disputes involve complex technical analysis of scheme mechanics, the commercial purpose of each step, and whether arrangements fall within the General Anti-Abuse Rule (GAAR). Expert witnesses provide technical analysis addressing the double reasonableness test, whether it would be reasonable to conclude the arrangement was abusive.

Tax Professional Negligence

Tax professional negligence claims require a tax expert witness to assess the standard of care expected of a reasonably competent tax adviser, whether the advice given fell below that standard, the correct advice that should have been given (the but-for position), and the additional tax liability or loss caused by the negligent advice.

POCA Tax Fraud

Proceeds of Crime Act (POCA) proceedings involving tax fraud typically rely on HMRC's forensic reconstruction of undeclared income to calculate the criminal benefit figure. Tax expert witnesses challenge this by identifying where the reconstruction relies on flawed methodology, ignores actual circumstances, or fails to apply HMRC's own approved methods for business records reconstruction.

Business Records Reconstruction

Business records reconstruction is HMRC's technique for estimating undeclared turnover where business records are inadequate or incomplete. HMRC applies mark-up analysis (applying expected profit margins to purchases), lifestyle analysis (comparing personal expenditure to declared income), and industry comparisons to produce a figure for undeclared income.

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