Tag Archives: VAT-assessment

HMRC internal manual: VAT Assessments and Error Correction update

By Marcus Ward 21 October 2024

HMRC’s manual VAT Assessments and Error Correction was updated on 15 October 2024.

This internal guidance is for HMRC inspectors (but is equally useful for advisers) covers assessments and error correction. The amendments apply mainly to General assessment procedures: Importance of avoiding delay.

The manual covers:

It also refers to for the most up-to-date guidance on reasonable excuse CH160000.as a defence against penalties and interest.

VAT: Second-hand goods scheme and best judgement – The Ancient & Modern Jewellers Limited case

By Marcus Ward 7 October 2024

Latest from the courts

The second-hands of time.

In the First-tier Tribunal (FTT) case, the issue was whether the second-hand goods margin scheme (margin scheme) was applicable and whether HMRC’s assessments for £5,474,249 (later reduced to £5,004,595) of underdeclared of output tax were issued in best judgement.

Background

The Ancient & Modern Jewellers Limited (A&M) sold second-hand wristwatches with the majority of the sales properly accounted for via the margin scheme. However, from information obtained from Italian tax authorities in respect of supply chain fraud, HMRC issued the assessments on the basis that supplies of certain goods did not meet the conditions of the margin scheme so that output tax was due on the full value of the watches rather than the difference between the purchase and sale values. HMRC decided to penalise A&M because the errors were deliberate and prompted and subsequently to issue a PLN on the basis that such conduct was attributable to the director. A&M is a “High Value Dealer” for anti-money laundering purposes.

Contentions

Appellant

The appellant claimed that HMRC did not use best judgement on the grounds that:

the inspector did not impartially consider the evidence
HMRC lacked sufficient evidence to raise an assessment thereby failing to meet the Van Boeckel test
the calculated amounts were no more than unreasonable and random guesses
the inspector did not approach the investigation with an open mind to such an extent that it could not be said that the assessments and penalties were the product of the reasonable behaviours of HMRC
put in terms of the case law: HMRC had acted in a way which no reasonable body of commissioners could have acted or, put another way, had been vindictive, dishonest or capricious

so the assessments and penalties were invalid.

Whilst accepting that a best judgment challenge is a high bar A&M contended that the conduct and mindset of HMRC’s investigating and assessing officer was so unreasonable that it vitiated the whole assessment.

Respondent

HMRC contended that the assessments were based on best judgement and that its focus was not on the supply chain fraud claims (as claimed by A&M). Additionally, a previous inspection in 2014 had raised prior concerns which provided adequate grounds for the assessments. Moreover, A&M was aware of the terms of operation of the second-hand margin scheme and considered that A&M had wilfully misused the scheme in several regards. The scheme had been incorrectly used for goods purchased by way of intracommunity supplies – which had been imported with the appellant claiming input tax on the imports and then including them in the margin scheme. A&M wilfully failed to carry out due diligence on its suppliers.

Best Judgement

It may be helpful if we consider what the words “best judgement” mean. This was best described by Woolf J in Van Boeckel v CEC [1981] STC 290

“What the words ‘best of their judgement’ envisage, in my view, is that the commissioners will fairly consider all material before them and, on that material, come to a decision which is one which is reasonable and not arbitrary as to the amount of tax which is due. As long as there is some material on which the commissioners can reasonably act, then they are not required to carry out investigations which may or may not result in further material being placed before them.”

Technical

The second-hand margin scheme is provided for under The VAT Act 1994, Section 50A, The Value Added Tax (Special Provisions) Order 1995 and certain paragraphs of VAT Notice 718 which have force of law.

Decision

The appeal was dismissed. It was found that A&M deliberately rendered inaccurate VAT returns. The director of the company was aware both of how the margin scheme worked and that the terms of the scheme had to be complied with if a supply was to be taxed under the it. A&M was found to have acted deliberately in misusing the scheme by including ineligible supplies. A&M had been lax in the completion of its stock book, and it had not met the record-keeping requirements necessary to use the scheme for the relevant transactions. Additionally, some of its EU suppliers were not registered for VAT, a fact A&M did not take steps to discover, and so related purchases could not qualify for the scheme. Also, it was likely that some of the purchases were of new watches which made them ineligible for the margin scheme.

Re, evidence; the FTT found much of the A&M director’s evidence to have been self-serving and, in parts, evasive and that it did not consider that the integrity of HMRC could be impugned. The court determined that; the inspector was diligent and thorough, HMRC had legitimate concerns regarding A&M’s use of the margin scheme generally and specifically and there was a wider concern that the company was a participant in fraudulent supply chains. The FTT considered that the investigation was proportionately carried out considering these concerns and the assessments raised in exercise of best judgment.

Penalties and PLN

The case further considered penalties: whether the appellant’s conduct was deliberate (yes – appeal dismissed). Whether the Personal Liability Notice (PLN) [Finance Act 2007, Schedule 24, 19(1)] was appropriate for the conduct attributed to the director – whether his conduct led to penalty (yes – appeal dismissed).

Commentary

This case is a long read, but worthwhile for comments on; the margin scheme use, HMRC’s inspection methods, best judgement, evidence and MTIC amongst other matters.

VAT: Best judgement; what is it, and why is it important?

By Marcus Ward 13 November 2023

If HMRC carry out an inspection and decide that VAT has been underdeclared (eg: either by understating sales, applying the incorrect VAT rate, or overclaiming input tax) an inspector has the power to issue an assessment to recover VAT that it is considered underdeclared. This is set out in The VAT Act 73(1)

“Where a person has failed to make any returns … or where it appears to the Commissioners that such returns are incomplete or incorrect, they may assess the amount of VAT from him to the best of their judgment and notify it to him”.

So, the law requires that when an inspector makes an assessment (s)he must ensure that the assessment is made to the best of their judgement, otherwise it is invalid and will not stand.

Guidance to surviving a VAT inspection here.

HMRC’s methods of assessing cash businesses here.

Definition of best judgment

Per Van Boeckel vs HMCE (1981) the judge set out three tests:

HMRC must make a value judgment on the material set before it honestly and bona fide and not knowingly set an inflated figure and then expect the taxpayer to disprove it on appeal
there must be material available
HMRC is not expected to do the work of the taxpayer but instead fairly interpret the material before it and come to a reasonable conclusion rather than an arbitrary one

If any of these three tests are failed, then best judgement has not been employed. However, the onus is on the appellant to disprove the assessment.

There were further comments on the matter:

“There are…obligations placed on the Commissioners to properly come to a view on the amount of tax that was due to the best of their judgement. In particular:

a value judgement must be made on the material put before them
they must perform their function honestly
there must be material on which to base their judgement
but they should not be required to do the job of the taxpayer, or carry out extensive investigations

This means that the assessing inspector must fairly consider all material placed before them and, on that material, come to a decision that is reasonable and not arbitrary, taking into account the circumstances of the business. In some cases, some “guesswork” may be required, but it should be honestly made based on the information available and should not be spurious, but HMRC must be permitted a margin of discretion.

Experience insists that it is usually more successful if the quantum of a best judgement assessment is challenged.

Where a business successfully disputes the amount of an assessment and the assessment is reduced, it will rarely fail the best judgement test.

In the case of MH Rahman (Khayam Restaurant) CO 2329/97 the High Court recognised the practice whereby the tribunal adopts a two-step approach, looking initially at the question of best judgement and then at the amount of the assessment. The message of the High Court appeared to be that the Tribunal should concern itself more with the amount of an assessment rather than best judgement.

Arguments which may be employed to reduce a best judgement assessment are, inter alia:

period of calculation is unrepresentative
wastage
discounts
staff use
theft
seasonal trends
competition
sales
opening hours
client base, etc

HMRC’s guidance to its own officers states that: Any assessments made must satisfy the best judgement criteria. This means that given a set of conditions or circumstances, “you must take any necessary action and produce a result that is deemed to be reasonable and not arbitrary”.

In other words, best judgement is not the equivalent of the best result or the most favourable conclusion. It is a reasonable process by which an assessment is successfully reached.

In the case of CA McCourtie LON/92/191 the Tribunal considered the principles set out in Van Boeckel and put forward three further propositions:

the facts should be objectively gathered and intelligently interpreted
the calculations should be arithmetically sound, and
any sampling technique should be representative

Tribunals will not treat an assessment as invalid merely because they disagree as to how the judgement should have been exercised. It is possible that a Tribunal may substitute its own judgement for HMRC’s in respect of the amount of the assessment. However, this does not necessarily mean that because a different quantum for the assessment was arrived at that the assessment failed the best judgement test.

Further, it is not the function of the Tribunal to engage in a process that looks afresh at the totality of the evidential material before it (M & A Georgiou t/a Mario’s Chippery, QB October 1995 [1995] STC 1101).

It should be also noted that even if one aspect of an assessment is found not to be made to best judgement this should not automatically invalidate the whole assessment – Pegasus Birds [2004] EWCA Civ1015.

Summary

There are significant difficulties in arguing that an inspector did not use best judgement and it is a high bar to get over.

In order to succeed on appeal, it would be required to be demonstrated, to the judge’s satisfaction, that the assessment was raised:

dishonestly
vindictively
capriciously
arbitrarily
spuriously
via an estimate or a guess in which all elements or best judgement are absent
wholly unreasonably

and that this action applies to the assessment in its entirety.

VAT: Was an option to tax valid? The Rolldeen Estates Ltd case

By Marcus Ward 18 April 2023

Latest from the courts

In the First-Tier tribunal (FTT) case of Rolldeen Estates Ltd there were a number of issues, inter alia; whether the appellant’s option to tax (OTT) was valid, if not, whether HMRC had the power to deem it valid, whether HMRC acted unreasonably and whether appellant estopped from relying on earlier meeting with an HMRC officer.

Background

The letting of property is an exempt supply, however, a landlord the owner can OTT the property and charge VAT on that supply. If the OTT is exercised, the supplier is able to reclaim input VAT on costs such as repairs and maintenance, but charges output VAT on its supplies. The OTT provisions are set out at The VAT Act 1994, Schedule 10.

The appellant in this case had previously submitted an OTT form VAT1614A and charged VAT on the rent to its tenant. Subsequently, the property was sold without charging VAT. HMRC issued an assessment for output tax on the sale value.

Schedule 10

A taxpayer does not need HMRC’s permission to OTT, unless that person has already made exempt supplies in relation to that property – in particular, if the property has already been let without VAT having been charged. In that scenario, the person must apply to HMRC for permission to exercise the OTT, and permission will only be given if HMRC are satisfied that the input tax is fairly attributed as between the exempt period and the taxable period. When OTT the company stated that no previous exempt supplies of the relevant property had been made and this was also confirmed in subsequent correspondence with HMRC.

Appellant’s contentions

The company informed HMRC that the OTT was invalid so that no VAT was due on the sale. Evidence was provided which demonstrated that Rolldeen had made exempt supplies before the date of the OTT so that HMRC’s permission had therefore been required before it could be opted. No permission had been given and therefore there was no valid OTT in place even though the appellant had purported to exercise that option. Also, the appellant submitted that it was unreasonable of HMRC to have exercised the discretion to deem the OTT to have effect, because they had failed to take into account the fact that during an inspection, HMRC had known that Rolldeen had made exempt supplies before OTT.

HMRC’s view

VATA, Schedule 10, para 30 allows HMRC retrospectively to dispense with the requirement for prior permission, and to treat a “purported option as if it had instead been validly exercised”. HMRC issued a decision stating that it was exercising its discretion under Schedule 10, para 30 to treat the relevant property as opted with effect from the date of the VAT1614A and that VAT was due on the sale and the assessment was appropriate.

Decision

The FTT found that:

after an inspection by HMRC it knew that prior exempt supplies had been made
although HMRC knew exempt supplies had already been made Rolldeen was estopped* from relying on that fact, because both parties had shared a “common assumption” that the OTT had been valid
para 30 could be used to retrospectively validate the OTT (albeit only in relation to supplies made after 1 June 2008). In this case that was sufficient as the sale of the property occurred on in March 2015
HMRC had not acted unreasonably because they had not taken into account their own failure to carry out a compliance check
this is exactly the sort of situation for which para 30 was designed
it was entirely reasonable and appropriate of HMRC to deem the purported option to have been validly exercised

The appeal was rejected and the assessment was valid.

Commentary

Again, proof, if proof is needed, that OTT can be a complex and costly area of the tax and care must always be taken. Advice should always be sought, as once an OTT is made, there is usually no going back.

An interesting point in this case was that no case law was cited on this issue and the FTT was unable to identify any.

* The principle of “estoppel” means that a person may be prevented from relying on a particular fact or argument in certain circumstances.

VAT Inspections …and how to survive them

By Marcus Ward 5 January 2022

VAT Inspections

The first point to make is that inspections are usually quite standard and routine and generally there is nothing to worry about. They are hardly enjoyable occasions, but with planning they can be made to go as smoothly as possible. As an inspector in my previous life, I am in a good position to look at the process from “both sides”. If you are concerned that the inspection is not routine (for any reason) please contact us immediately.

Background

Typically, the initial meeting will begin with an interview with the business owner (and/or adviser) to go through the basic facts. The inspector will seek to understand the business and how it operates and will usually assess the answers with specific tests (further tests will be applied to the records). After the interview the inspector(s) will examine the records and will usually have further queries on these. More often than not they will carry out; bank reconciliations, cash reconciliations, mark-up exercises, and often “references” which are the testing of transactions using information obtained from suppliers and customers. There are many other exercises that may be carried out depending on the type of business. Larger businesses have more regular inspections where one part of the business is looked at each meeting. The largest businesses have more or less perpetual inspections (as one would expect). The length of the inspection usually depends on:

Size of the business
Complexity of the business
Type of business (HMRC often target; cash businesses, the construction industry, property investment, partially exempt businesses, charities and NFP entities, cross-border transactions and financial services providers amongst others)
Compliance history
Associated/past businesses
Intelligence received
Errors found
Credibility of the business owner and records

The above measurements will also dictate how often a business is inspected.

More details on certain inspections/investigations here

The initial inspection may be followed by subsequent meetings if required, although HMRC state that they aim is to conclude matters at the time of the first meeting.

The inspection – how to prepare

Ensure that both the person who completes the VAT returns and the person who signs the VAT returns will be available for all of the day(s) selected
Arrange with your adviser, to be available to you and the inspector on the days of the inspection
Thoroughly review your VAT declarations and have ready, if relevant, any disclosures or other declarations you consider you need to make to HMRC at the start of the inspection (this should avoid penalties)
Have available all VAT returns and working papers for the last four years or the period since you were registered for VAT including:
- Annual accounts
- The VAT account and all related working papers
- All books and accounts, cashbook, petty cashbook, sales and purchases day books
- Sales and purchase invoices
- All supporting documentation, eg; contracts, correspondence, etc.
- Bank statements
- VAT certificate and certificate of registration
- Any other documentation relating to “taxable supplies”
Have available the full VAT correspondence files ensuring that they are fully up-to-date
Ensure you have full information on any; one-off, unusual or particularly high value transactions

The inspection – during the visit

Ask the inspector(s) to identify themselves by name on arrival (they carry identity cards)
Be polite, friendly and hospitable as far as possible
Make a desk or space available for them to work near to you – in this way you can oversee/overlook what they do
Only allow access to the files that form part of your “VAT Records”
Enable the VAT inspector, if they ask, to inspect your business premises (and have someone accompany them)
Be cautious with your answers to seemingly “innocent” questions and comments. If in doubt ask for time to check, or that the question be put in writing (never guess or provide an answer which you think HMRC want)
If something inconsistent is found (or suggested) ask for full details and take note of all of the documentation to which the query relates – this will enable you to provide necessary information to your adviser

The inspection – at the end of the visit

The inspector should:

Explain the main work they have done. For example which VAT accounting periods they reviewed
Explain any areas of concern they have, discuss them and seek to agree any future action that needs to be taken; and
Illustrate as fully as possible the size and reason for any adjustment to the VAT payable, and describe how the adjustment will be made

You should:

Obtain a summary of the inspection from HMRC (not always an easy task)
Ask the inspector to put all of HMRC’s concerns about your business to you in writing
Confirm with the inspector all time limits for providing additional information to HMRC

After the inspection

HMRC will write to you confirming:

Any issues identified
Further information required
Improvements required to record keeping
Any corrections required
Whether VAT has been over or under paid
Any penalties and interest which will be levied
Deadlines for payment.

On a final point: Never simply assume that the inspector is correct in his/her decision. It always pays to seek advice and challenge the decision where possible. Even if it is clear that an error has been made, mitigation may be possible.

We can provide a pre-inspection review as well as attending inspections if required. It is quite often the case that many HMRC enquiries may be nipped in the bud at the time of the inspection rather than becoming long drawn out sagas. We can also act as negotiator with HMRC and handle disputes on your behalf.

VAT: What is open market value? The Jupiter case

By Marcus Ward 11 May 2021

Latest from the courts

In the First Tier tribunal (FTT) case of Jupiter Asset Management Group Ltd the issue was the value of management services to an associated third party VAT group.

Background

The value is important because if HMRC believe that a supply between two connected parties (as defined by The Income and Corporation Taxes Act 1988 Section 839) is undervalue and the recipient cannot recover the relevant input tax in full, it is permitted via The VAT Act 1994, Schedule 6, PART 2, para 1 (1) to substitute open market value (OMV) by way of a Notice.

This paragraph is specifically intended to counter tax avoidance. If a supply between connected persons is made below open market value for a legitimate reason that the trader can substantiate, and which is unconnected with avoidance HMRC has the discretion not to issue a Notice. In Jupiter, HMRC directed that OMV be used to calculate the charge as it considered that value was too low and issued an assessment for underdeclared output tax.

Decision

In the absence of comparable supplies, OMV was to be determined by reference to:

the full cost of making the supplies;
the full cost included the costs incurred on goods and services used in making the supplies and general overhead costs the input tax in respect of which had been recovered
the remuneration paid to the executive directors to the extent that that remuneration related to activities performed by the executive directors in making the supplies of the management services

Consequently, the appeal against the output tax assessment was dismissed.

Commentary

An expected outcome, but ne which emphasises that care should be taken with transactions between connected parties, management charges and inter-company charges in general. This is even more relevant since the decision in the Norseman Gold plc case

VAT Payment Problems – Q & As

By Marcus Ward 12 November 2019

If you can’t pay your VAT bill, please do not put your head in the sand, the problem will not go away. Here are some answers to the most commonly asked VAT payment problems.

Q: I have received a demand notice for payment of VAT. Why?

A: HMRC have not received payment of the VAT liability that is described in the demand notice. You should therefore pay the outstanding debt without delay so as to avoid further recovery action. HMRC take prompt action to recover debts.

Q: I am not able to pay the debt immediately because of a temporary cash-flow problem. What should I do?

A: You should make urgent contact with your bank or your financial adviser to explore means of overcoming these temporary financial difficulties.

Q: I have consulted the bank/financial adviser, but they are unable to help. What else can I do?

A: Without further delay contact the Regional Debt Management Unit whose address appears on the demand notice. They may be able to help you by agreeing a brief period in which to pay the debt. They are usually helpful and will consider carefully all practical options for settlement. However, if these do not produce a solution or they do not receive a response to their request for payment, they may, like other creditors, take action to recover the money they are owed.

Q: What is the Default Surcharge?

A: Default Surcharge is a civil penalty to encourage businesses to submit their VAT returns and pay the tax due on time.

Q: When will a Default Surcharge be issued?

A: A business is in default if it sends in its VAT return and or the VAT due late. No surcharge is issued the first time a business is late but a warning (a Surcharge Liability Notice) is issued. Subsequent defaults within the following twelve months (the “surcharge period”) may result in a surcharge assessment. Each time that a default occurs the surcharge period will be extended. There is no liability to a surcharge if a nil or repayment return is submitted late, or the VAT due is paid on time but the return is submitted late (although a default is still recorded).

Q: How much is it?

A: The surcharge is calculated as a percentage of the VAT that is unpaid at the due date. If no return is submitted the amount of VAT due will be assessed and the surcharge based on that amount. The rate is set at 2% for the first default following the Surcharge Liability Notice, and rises to 5%, 10% and 15% for subsequent defaults within the surcharge period. A surcharge assessment is not issued at the 2% and 5% rates if it is calculated at less than £200 but a default is still recorded and the surcharge period extended. At the 10% and 15% rates the surcharge will be the greater of the calculated amount or £30.

Q: What sort of assessments are sent out?

A: An assessment may be issued if a VAT return is not submitted by the due date. The amount may be based on previous returns. If a business does not submit its returns time after time, the assessment value will increase. An officer may also issue an assessment after a visit, if they have found errors in the amount of tax declared on previous returns. Both types are included in the taxpayers’ debt and are collected in the normal way if they are not paid promptly.

Help

There are a number of schemes available which may help cashflow or possibly reduce the amount of VAT you pay.

Cash Accounting – where you only pay VAT to HMRC when you have received payment from your customer.

Annual Accounting – where you make set monthly payments and make one return a year with an adjusting payment.

Flat Rate Scheme – where you pay a set percentage of your turnover rather than calculating output tax less input tax.

Bad Debt Relief – where you are able to reclaim VAT relief on your bad debts.

Please contact us if VAT payments are proving a problem for your business. Negotiation with HMRC is possible.

VAT: Apportionment and best judgement – The Homsub case

By Marcus Ward 3 October 2019

Latest from the courts

In the Homsub Ltd case the issue was the apportionment of values when a supply comprises goods at different VAT rates.

Further to the M & S case here is another First Tier Tribunal (FTT) case on the value of food and drink in meal deals. It also considered whether HMRC exercised ‘best judgement’ when it carried out an invigilation exercise to establish the percentage split between supplies subject to VAT and those which were not.

Background

Homsub is a franchisee in respect of Subway products, essentially being hot and cold food, which can be consumed either on or off their premises.

HMRC had concerns that the correct amount of output tax was being declared on sales. Consequently, it carried out an invigilation exercise as follows: The invigilators recorded, in respect of each of the five outlets, each sale made and annotated it with whether it was eat in or take out. A record was also made as to whether the food was hot or cold. Those differences needed to be recorded because of the different VAT treatment in respect of hot food and cold food on the one hand and eat in and take out food on the other. All eat in food is taxable, while some takeaways are zero rated. Further information here.

Contentions

Homsub complained that the methodology adopted by HMRC was flawed as it was not sufficiently refined to give rise to a reasonably reliable overall picture. It was argued that the exercise should have been undertaken by reference to transaction values, rather than the number of transactions. That is – HMRC should have looked at the value of supplies made which did attract VAT as compared to the value of supplies made which did not attract VAT.

The court identified that the true area of concern on the part of the respondents was that Subway sometimes had promotions called “Meal Deals” whereby several products would be bundled together for a single headline price.

Homsub contended that a meal deal offer was available to customers whereby for the all in price of £3 a customer could purchase a sandwich (hot or cold) and a drink (which could be a fizzy drink or hot beverage upon which VAT would be due). If the meal deal involved hot food, then it would be subject to VAT.

HMRC’s issue was that because of the way in which the appellant’s till was set up, it treated £2.99 of each meal deal as attributable to the sandwich (VAT free if cold) and only 1p to the accompanying drink which, if subject to VAT, would mean that the VAT would be one fifth of one penny.

Outcomes

Homsub stated that it is entitled to run its business as it sees fit and to make such commercial decisions as best suit its business. The appellant said that it is entitled to sell loss leaders, as do many major retailers, or to sell stock at less than cost price if that somehow serves the best overall commercial interests of the business.

The court ruled that this was not a true loss leader situation. This was a transaction were goods are packaged together to be sold at a single price. What must be done is to look at the reality of the transaction when apportioning the part of the money paid by the customer between the various components within the package of goods sold. Consequently, Homsub needed to apportion the sales value in a different way. This would not necessarily be on the basis of the relevant retail prices. This is because accurate apportionment is difficult, especially as, as Homsub explained, that labour is by far the largest cost component within the cost of a sandwich and the overall meal deal package, that is; much more staff labour was devoted to preparing sandwiches than serving drinks.

If the case stopped there, there would be additional output tax for Homsub to pay. However…

Methodology and best judgement

The court decided that the assessment methodology adopted by HMRC was significantly flawed and potentially misleading. A simple count of transactions that did attract VAT and those which did not attract VAT might be capable of being appropriate in certain kinds of business, but not in this case. Further, a statistician or forensic accountant would be ‘alarmed to find that the methodology used by HMRC was considered to be either acceptable or such as to give rise to a reasonably reliable result’. In court, the representative of HMRC was forced to agree with this interpretation- which must have caused embarrassment. The court also said that it was not its function to go on to undertake any kind of assessment to ascertain what, if any, additional VAT might be due.

Decision

In the court’s judgement the methodology was flawed to such an extent that it would be wholly unreasonable, and unfair to the appellant, to base a best judgement assessment thereon. The appeal was therefore allowed.

Commentary

Always have assessments of this sort reviewed. There is significant case law on ‘best judgement’ most salient being: Van Boeckel v C&E [1981] and Rahman v HMRC. Additionally, HMRC often make certain assumptions on assessments based on invigilation and mark up exercises. These can be challenged, as can the methodology. As examples, HMRC need to recognise, inter alia;

seasonal trade variations
discounts
customer preferences (in this case, Homsub explained that at some of its shops’ locations a lot of customers were students and preferred to take away rather than eating in)
representative periods
sales/special offers
the times invigilations were carried out (were they representative of all trade?)
the number of invigilations and ‘test meals’ – were they sufficient to establish a fair overall picture of the business?
own and staff use
business promotions
loss of goods (destroyed, waste, stolen etc)
gross/net
gifts to customers
alternative methods
HMRC staff experience etc

All of these and other situations can affect expected sale values.

I have further set out how HMRC operate in these situations here.

I have a success rate of over 90% in getting these types of assessments reduced or completely withdrawn. Please do not simply accept HMRC’s decision, nor the, increasingly, bullying stance they can adopt. Always challenge!