The reviewing officer is a different person from the one who issued the penalty, working independently from a separate HMRC office. HMRC has 45 days to conclude the review. According to HMRC's own published figures, about half of reviewed decisions are cancelled or varied, and for automated penalties (the most common kind), the figure is materially higher. If the review goes against you, you have a further 30 days to appeal to the tribunal.
- Missing the 30-day window. The clock starts on the date printed on the penalty decision letter, not the date you receive it. Miss it and a late appeal becomes a matter of HMRC's discretion or, beyond that, the tribunal's. You can recover, but the case becomes harder before you have started arguing the substance.
- Going straight to the tribunal without trying the review first. The internal review is free, takes 45 days, doesn't prevent you from going to tribunal afterwards, and has a meaningful success rate. Skipping it usually adds cost and delay without strengthening your case.
- Treating the review as a paper formality. The reviewing officer can call for further evidence, reconsider the legal test, and overturn the original decision in full. A short, well-evidenced submission that addresses the precise grounds of appeal is more persuasive than a long, narrative letter.
- Filing the appeal without specifying grounds. HMRC's rules require the appeal to state the grounds on which the penalty is being challenged. "I disagree" isn't enough. Anchor the case in either a procedural error, a misapplication of law, a reasonable excuse, or a factual dispute on the underlying VAT liability.
- Paying the penalty before deciding to appeal. A penalty under appeal is generally stood over: you do not need to pay it while the review and appeal process is running. Paying it doesn't strengthen the case and removes a small piece of leverage when negotiating settlement.
Which VAT penalties carry a right of appeal
Essentially all of them. The right of appeal is built into the VAT Act 1994 and into the penalty regimes themselves. In practice, the penalties you are most likely to face, and that this article focuses on, are:
- Late submission penalty points and the £200 fine when the threshold is reached (under Schedule 24 of the Finance Act 2021, in force since 1 January 2023)
- Late payment penalties at 3% / 3% / 10% under Schedule 26 of the same Act
- Inaccuracy penalties for errors in returns (15% to 100% of the VAT understated, depending on behaviour and disclosure)
- Failure to register penalties when VAT registration is missed
- Default surcharge under the old regime, for VAT periods that started before 1 January 2023
Every penalty decision letter from HMRC must set out the time limit for appealing (normally 30 days) and the route. Read the letter carefully: the time limit runs from the date on the letter itself, not the date you opened the envelope.
The two routes: internal review or straight to tribunal
For VAT (an indirect tax), the decision letter offers you two options at the same time. You can:
- Accept the offer of an internal review by HMRC. A reviewing officer who was not involved in the original decision looks at the case again. The review is conducted from HMRC's Solicitor's Office and Legal Services team, structurally separate from the original decision-maker. There is no fee. HMRC must conclude the review within 45 days unless you agree an extension.
- Notify the appeal directly to the First-tier Tribunal (Tax Chamber). You skip the review and go straight to an independent judicial body. There is no fee at the tribunal either, but the timeline is longer (often 12 to 18 months from notification to hearing).
You cannot do both at the same time. If you have already notified the appeal to the tribunal, the review route is closed. If you accept the review first and disagree with the conclusion, you keep the right to appeal to the tribunal afterwards.
Why the internal review is usually the right first step
In practice, the review is underused. HMRC's 2017-18 Annual Report shows that, across the year, about half of statutory reviews were cancelled or varied in the taxpayer's favour. For automated penalties, the figure is materially higher: the same report indicates only around 30% of VAT default surcharge reviews upheld the original decision, meaning roughly seven in ten were either cancelled or varied. Comparable figures for the points-based regime that replaced default surcharge in January 2023 aren't yet published, but the underlying review process is the same.
The expensive misconception is that the reviewer will just rubber-stamp the original decision. In automated-penalty cases, the original was a system output, not a considered legal analysis. The review is the first time a human has actually weighed the facts. That's where reasonable excuse arguments, procedural errors, and miscalculations come to light.
Even when the review upholds the original decision, you have lost nothing. The 30-day window to appeal to the tribunal reopens from the date of the review conclusion letter. You have used 45 days to test the case, gathered HMRC's reasoning in writing, and can refine your tribunal submission accordingly.
How to make the appeal
The appeal must be in writing. There is no special form, although HMRC publishes form WT2 for reasonable excuse claims under the old default surcharge regime, which can still be used for those legacy cases. For the current regime, a letter or email to the address on the penalty decision letter is sufficient, provided it contains:
- Your name, VAT registration number, and reference number of the penalty
- The date and amount of the penalty being appealed
- The specific grounds of appeal (the legal or factual basis on which you say the penalty is wrong)
- Any supporting evidence (medical letters, screenshots of HMRC error messages, accountant correspondence, bank statements)
- A clear statement of whether you want an internal review, or to go directly to the tribunal
The grounds matter. Vague disagreement ("this isn't fair", "my business is struggling") rarely succeeds. Anchor the case in one of the four main grounds: reasonable excuse, a procedural error by HMRC, a misapplication of the law (often the wrong rate of penalty, or the wrong period), or a factual dispute on the underlying VAT liability.
Penalty notice in front of you and 30 days to act? Our Urgent VAT Advisory frames the appeal grounds clearly before you respond to HMRC.
What happens during the internal review
The reviewer reads the file from scratch and considers all the facts and the law as they apply to your case. They can call for additional evidence from the original decision-maker or from you. They can take their own view on the legal test, and they are explicitly not bound by the original decision.
The reviewer reaches one of three conclusions:
- Cancelled. The original decision is overturned. The penalty is removed and the case is closed.
- Varied. The decision is changed, usually in the taxpayer's favour, although the legislation does not strictly prevent an upward variation. If you are concerned about the scope, you can ask the reviewing officer to confirm in writing at the outset that the review is limited to the matters appealed.
- Upheld. The original decision stands. You have 30 days from the date of the conclusion letter to appeal to the tribunal.
Throughout the process, the penalty itself is normally stood over: you do not have to pay it while the review is running. Interest, however, continues to accrue on any underlying VAT debt the penalty relates to, so factor that into the strategy on longer cases.
If you decide to go to the First-tier Tribunal
The First-tier Tribunal (Tax Chamber) is an independent judicial body. It is not part of HMRC, and the tribunal judge is not bound by HMRC's reasoning. The tribunal hears the case afresh on the evidence presented, and can affirm, vary, or cancel the penalty entirely.
You notify the appeal directly to the tribunal (via the HMCTS website or by post). HMRC has 42 days to file a statement of case and a bundle of documents. You then have 30 days to file any written response. The hearing usually follows several months later, often 12 to 18 months from initial notification.
You can represent yourself, particularly in straightforward cases on smaller penalties. For more complex cases (deliberate behaviour penalties, large amounts, multiple periods), professional representation tends to materially improve the outcome. Costs are normally not awarded in the First-tier Tribunal, although there are exceptions for unreasonable conduct.
An appeal from the First-tier Tribunal to the Upper Tribunal is possible, but only on a point of law (not on the facts), and only with permission. In practice, the First-tier decision is the end of the road for most VAT penalty cases.
The four most useful grounds of appeal in practice
In practice, the cases we see succeed cluster around four headings, alone or in combination:
- Reasonable excuse (for late filing or late payment): an event beyond the taxpayer's control that prevented compliance despite reasonable care. Detailed examples and the case law are covered in our companion article on what counts as a reasonable excuse.
- Procedural error by HMRC: penalty issued for the wrong period, calculated on the wrong amount, applied at the wrong rate (the April 2025 rate change has produced several such cases), or in breach of HMRC's own published guidance.
- Misapplication of the law: HMRC has applied the wrong statutory test, or interpreted the legislation in a way that case law has not supported. Reviews and tribunals will sometimes overturn decisions where HMRC sought to require a higher threshold than Parliament intended.
- Dispute on the underlying VAT: if the penalty is calculated on a VAT liability you also dispute (an assessment of underdeclared output tax, for example), the appeal against the liability can be heard alongside the penalty appeal, and the penalty falls automatically if the underlying VAT is reduced or cancelled.
What you need to do, step by step
- Diary the deadline immediately. 30 days from the date on the letter. Set the reminder for day 20 to leave room for drafting.
- Identify the grounds. Read the penalty decision letter carefully. Which of the four main grounds applies to your case? Often more than one.
- Gather evidence. Medical letters, HMRC outage screenshots, accountant correspondence, bank confirmations, calculations showing the figures HMRC used. Build the file before drafting.
- Decide on the route. For most cases, request the internal review first. Skip directly to tribunal only if the review is unlikely to succeed (very specific legal points already lost on review by HMRC) or if speed isn't important.
- Draft a concise letter or email. Reference number, decision date, grounds anchored in law or fact, evidence enclosed, route requested. Keep it to a few pages: the reviewer will read the file in full, you don't need to.
- Send it within 30 days. Use recorded delivery if posting. If emailing, request a read receipt. Keep proof of dispatch.
- If the review goes against you, decide quickly. 30 days from the conclusion letter to notify the tribunal. Most lost reviews come with enough information to assess whether tribunal is worth the time.
When you might need expert VAT advisory
VAT penalty appeals are mechanically simple but strategically nuanced. The framing of the grounds, the choice of route, and the evidence presented all change the outcome materially. In practice, the situations below are where a senior specialist's read meaningfully improves the result:
- The penalty is materially large (inaccuracy penalties of 15-100% on a substantial VAT figure) and the route choice matters to the outcome
- HMRC has alleged deliberate or concealed behaviour, where the penalty range is much higher and the stakes include reputational and director-level consequences
- You're an accountant whose client has a strong reasonable excuse case but limited evidence, and you want a sense-check on framing before submitting
- The penalty relates to a VAT period that straddles a rule change (the April 2025 rate increase, the move from default surcharge to the new regime) and the calculation may be wrong
- You're considering whether to go directly to tribunal or take the review first, given the specific legal arguments and HMRC's likely position
- You've already lost an internal review and need a clear-eyed view on whether the tribunal appeal has merit before lodging
Whether you're a business owner or an accountant working on a client case, we focus on the VAT questions where extra expertise pays off, and we work in plain English.