AH1775 - Special Commissioners: The Hearing: “Evidence, the evidential burden and the onera of proof”


This article appeared in “The General Commissioner” and was written by the Head of Appeals Unit London.

Evidence, The Evidential Burden and The Onera of proof

Evidence

Although the Regulations governing Commissioners’ Appeal Hearings (Statutory Instrument 1811 of 1994 for Special Commissioners and Statutory Instrument 1812 of 1994 for General Commissioners), refer to evidence, nowhere in the Regulations or elsewhere in the taxing statutes is that term defined. The usual definition of evidence is related to fact and can become somewhat tautologous unless a few terms are also defined.

Evidence is that which tends to prove a fact. It is that which would satisfy a reasonable enquirer of the fact’s existence. Relevant evidence is that which makes the fact more or less provable. Direct evidence requires no inference on the part of the decision-maker to accept it. Circumstantial evidence, on the other hand, requires an inference on the part of the decision- maker before it can be accepted. Fact is that which is known to be true. To complete the definitions it is probably worth mentioning that information is an item of knowledge and knowledge is knowing by experience.

Section 50(6) of the Taxes Management Act 1970 presumes that examination (in chief and cross-examination) is evidence and the Section refers to ‘other evidence’. This Section clearly requires evidence to reduce an amendment or assessment, whereas the corresponding sub- section for increase on appeal (Section 50(7) TMA 1970) is silent as to evidence, the Statute merely states ‘If …. it appears to the Commissioners ….’.

It is entirely a matter for the Tribunal to decide what evidence it accepts or rejects. Moreover, the Tribunal must consider the admissibility, relevance and weight to be given to each item of evidence.

There is specific authority at Regulation 15(6) (for General Commissioners) and Regulation 17(6) (for Special Commissioners) to admit evidence that would be inadmissible in a Court. However, there is control of this possibly lower standard of evidence at Regulation 15(4) which enables the Tribunal to evaluate the evidence in question.

Evidence must, as a matter of law, be both admissible and relevant. Whilst almost all evidence will be admissible before Tax Tribunals, defining the relevance is much more difficult. In Director of Public Prosecutions versus Kilbourne [(1973) AC 729 at 756] Lord Simm of Glaisdale said: ‘Evidence is relevant if it is logically probative or disprobative of some matter which requires proof .… It is sufficient to say ….. that relevant (ie logically probative or disprobative) evidence is evidence which makes the matter which requires more proof more or less probable.’

The weight of evidence is its persuasive value. It is the qualitative value the evidence has in relation to the point or points in issue. Inevitably, the ultimate weight of any evidence is inextricably bound up with the view the Tribunal takes of the truthfulness, cogency and reliability of the witness after cross- examination. Almost always, the demeanour of the witness affects the weight of the evidence. Indeed, Regulation 15(4) of SI 1812 of 1994 specifically authorises such an evaluation:

‘In assessing the truth and weight of any evidence, the Tribunal may take account of its nature and source, and the manner in which it is given.’

Evidence can be given orally, of course, but it is common nowadays (and invariably the subject of a Direction at the Special Commissioners) to give evidence in chief in writing, by means of a Proof of Evidence or a Witness Statement. A witness of fact prepares a Witness Statement. A witness of opinion prepares a Proof of Evidence. This makes the trial much more structured and facilitates a better quality of cross examination. Although the General Commissioners’ Regulations do not have the same powers of Directions, it had been my experience that General Commissioners welcome seeing Witness Statements or Proofs of Evidence in advance of the Hearing, especially if they are accompanied by Skeleton Arguments and the appropriate Document Bundles. In substantial cases HMRC will seek co-operation and reciprocation from the appellant’s representative in order to provide advance copies, including a Statement of Facts not in dispute. In any event, sufficient bundles, clearly referenced and marked, should be made available to all relevant parties at the Hearing.

These procedures not only make the Hearing far more orderly, they also shorten the amount of time needed and generally reduce the stress of the trial. In Scotland different procedures may apply where some Tribunals will not accept Proofs or Witness Statements.

The onera of proof

There are two onera of proof –

  1. Common Law

This is with he or she who asserts ie the person who appeals against the determination, assessment or decision. Examples in Tax Law are an appeal against a refusal of loss relief (Section 42 etc), National Insurance matters, Construction Industry Scheme Certificates etc.
Whilst the Common Law onus of proof usually rests with the taxpayer, there are certain circumstances in Tax Law where the onus of proof will be firmly with the Crown. A clear example of that is a tax geared penalty determination under Section 95 TMA 1970, where HMRC alleges default and therefore has the right to open because it has the onus of proof. (The right to open carries with it the right to close the proceedings.)

  1. The statutory onus of proof appears in Tax Law. Under Section 50(6) TMA 1970 it is for the appellant to convince the Tribunal of the accuracy of his or her case. The words of Mr Justice Walton in the case of Bookey versus Edwards Estates Limited (reported at 55 TC Page 490 Paragraph D) are helpful: ‘there is no doubt, pursuant to Section 50(6) of Taxes Management Act 1970, that the onus is very much upon an appellant to convince the Commissioners of Income Tax as to the accuracy of his case’.

The same Judge in a lively back duty case used these words: ‘But he is once again forgetting that the onus falls upon the taxpayer to show that HMRC’s figure was wrong – an onus which is not discharged merely by showing there may have been an explanation for the accretion in Mr Jonas’s wealth, not that there in fact was’. (Jonas versus Bamford TC 51 Page 24 at Paragraph G.)

This was further discussed in the more recent case Hurley versus Taylor (71 TC 268).

Some might think it odd that there is a statutory onus of proof placing the burden with the taxpayer, but the reason for this is given in a number of tax cases. Perhaps best known is the explanation of Pennycuick J in Hudson versus Humbles (TC 42 at Page 387): ‘the taxpayer knows the full facts, and HMRC does not’. Despite what some practitioners might think, HMRC’s information gathering powers are limited. After all, it is always open to any person or company to refuse to provide information or make a Return, choosing to pay the fine or penalty instead.

There are numerous examples in Law where the statutory onus is with the defendant or appellant and it is worth mentioning some of those. The Gaming Act 1968 Part III Section 13; The Road Traffic Act 1988 Section 143 in respect of car insurance, and The Firearms Act 1968 Section 1 in respect of a shotgun.

There is an interesting anomaly in Section 28A(6) TMA 1970 where there is an onus on the Tribunal to give a direction to close an enquiry ‘unless they are satisfied that there are reasonable grounds for not issuing a closing notice within the specified period’. This seems to be balanced by the slightly unusual wording of Section 19A(2)(a)(i) which requires the production of documents in the taxpayer’s possession or power which the Officer of the State may reasonably require for the purpose of determining whether and, if so, the extent to which a Return is incorrect or incomplete, rather than to check if it is correct.

From time to time the issue of proving a negative arises. Most commonly in tax tribunals this happens when a married woman appeals against an insurance officer's decision on the level of national insurance pension payable. The appellant has to prove that she did not sign an Election to pay a lower rate of national insurance contribution some forty years ago. In these circumstances the general rule that it is better to require proof of a positive rather than a negative proposition applies and the burden will shift to the respondent. There is much case law to support this, but the most commonly quoted case is: Joseph Constantine Steamship Line versus Imperial Smelting Corporation Ltd (1942) AC 154, where Lord ? Russell of Killowen said, at page 177: '.......the task of proving a negative, a task always difficult and often impossible, would be a most exceptional burden to impose on a litigant......I know of no case....in which an attempt has been made, or called for, to prove the suggested negative.'

Penalty Appeals

Section 100B(2) TMA 1970 specifically excludes the statutory onus of proof (Sections 50(6) to 50(8)) from applying to appeals against penalties. It follows, therefore, that the onus reverts to the person making the assertion ie the officer who made or authorised the penalty determination. However, in penalty appeals the evidential burden will feature greatly and especially so with the so-called 'flat-rate' penalties charged under Section 93 TMA for the late filing of a Return.

Put another way, when HMRC makes a penalty determination it is asserting that there has been an offence committed. The onus of proof and evidential burden rest firmly with The Crown. In the case of a flat-rate penalty of any type we must adduce evidence of the alleged failure. The appellant can either introduce evidence to rebut or offer their 'reasonable excuse'. The evidential burden is likely to be significant in all 'failure' penalty cases, especially so when the penalty is charged for failure to comply with an obligation, such as not making a return by a specified date.

The evidential burden

This can shift during the course of a trial, not just generally but on individual aspects. However, the evidential burden operates quite separately from the onus of proof. If the onus of proof is lost, then the other side wins. With the evidential burden, it is possible to lose a number, indeed many, aspects and still win the case.

The statutory requirement to keep records for tax purposes, Section 12B, Taxes Management Act 1970, may well mean that the appellant will have difficulty in discharging the evidential burden if those records fail to meet that statutory requirement.

The Standard of Proof

This is ordinarily explained as the balance of probabilities. The leading case is In Re H and Others (Minors) (Sexual Abuse: Standard of Proof) (1996) AC 563. The more serious the accusation the higher the standard of proof must be. Where facts are in dispute the preponderance of probability is the issue ie what, on the evidence, is the more likely version of events.

It is important to consider exactly what the evidence proves. In many cases there is evidence of unexplained bankings, unexplained capital accretions, wealth or personal expenditure to support HMRC amendment or additional assessments. Similarly, business economics based on information derived from the taxpayer's own records can show that the accounts are unreliable. If the Inspector is able to show that the business records are inadequate and that the Return in consequence cannot be accurate, it is always open to the Inspector to substitute different figures. At this point business economics become very useful for re-computing the profit from evidence of the taxpayer's own business or other reasonable external comparisons. In Coy versus Kime (59 TC 447) the General Commissioners, having found as a fact that the trader's records were unreliable, accepted a computation by the Inspector using a Family Income Survey produced by the Department of Employment. Mr Coy argued that the Inspector's figures referred to average families and not necessarily with any extremes of low or high expenditure. However, as was pointed out by the Judge in the High Court, the General Commissioners had not, as against the evidence of the Family Income Survey, any accurate evidence from the appellant of his actual expenditure; they simply had his own estimation of what his expenditure on various household and personal matters was. (Paragraph B on page 457.) This is a cogent example of the importance of adducing evidence of sufficient weight and relevance to prove the point at issue.