Penalties
HMRC Late Filing Penalty
What to check before appealing an HMRC late filing penalty, including deadlines and reasonable excuse evidence.
At a glance
- Late filing penalties can apply even where no tax is actually owed
- Penalties typically escalate the longer a return remains outstanding
- Checking the notice's basic facts is a useful first step before appealing
- HMRC's reasonable excuse test is narrower than most people assume
- A late partnership return can generate a separate penalty for each partner, not just one penalty overall
- Company and confirmation statement late filing penalties operate under different rules to Self Assessment
Late filing penalties are usually issued automatically once a return misses its deadline, regardless of whether any tax is actually owed, which means even a nil or repayment return can attract a penalty if filed late. The penalty structure typically starts with a fixed amount and escalates the longer the return remains outstanding, with additional charges kicking in at further milestones.
Before appealing, check the notice for basic accuracy — the stated deadline, the date HMRC recorded the return as received, and whether any reasonable excuse might apply. HMRC's definition of a reasonable excuse is generally narrower than most people expect, focusing on genuinely exceptional circumstances rather than routine administrative oversights, so it's worth being realistic about the strength of your grounds before deciding whether to appeal.
Where a penalty appeal succeeds, it's usually because either the reasonable excuse genuinely meets HMRC's threshold, or because a factual error is identified in the penalty itself — such as an incorrect filing date being recorded, or a penalty being issued for a return that was in fact filed correctly. It's also worth checking whether a reasonable excuse existed for the whole period of the delay, not just the initial cause, since HMRC expects the return to be filed promptly once the original excuse ends.
For partnerships, each partner can face their own separate penalty for a late partnership return, in addition to any penalty on their individual return, which means a single missed partnership deadline can generate multiple penalties across the partners. Directors of companies should also be aware that late filing penalties for Company Tax Returns and confirmation statements operate under different rules to Self Assessment, so a business missing more than one type of deadline can face penalties accumulating from several different regimes at once.
How to prepare
Taking a structured, evidence-led approach from the outset — rather than reacting to each request as it arrives — tends to produce a faster and less stressful outcome.
- 1
Check the penalty notice for basic accuracy, including the recorded filing date
- 2
Confirm exactly when the return was actually filed, with evidence
- 3
Identify whether a genuine reasonable excuse applies, and for how long
- 4
Gather evidence supporting that excuse from the relevant time period
- 5
Decide whether to appeal directly to HMRC or request a review first
- 6
Check whether more than one type of return or filing was late, since each may have separate penalty rules
- 7
For partnerships, confirm whether each partner has received their own penalty notice
What documentation to gather
- The penalty notice showing the deadline and the date the return was recorded as filed
- Evidence supporting any reasonable excuse being claimed
- Proof of when the return was actually submitted, such as a filing confirmation
- Any correspondence with HMRC around the filing deadline
- A clear written explanation of the circumstances, if appealing
- Penalty notices for each separate filing or partner, if more than one applies
- Confirmation of the actual filing date for every return involved
Common mistakes to avoid
These are the errors we see most often in practice — being aware of them in advance can help you avoid an entirely preventable setback.
Assuming a penalty is correct without checking the recorded filing date against your own records
Claiming a reasonable excuse that only covers part of the delay, not all of it
Providing no evidence to support the claimed reasonable excuse
Not filing the return as soon as possible once the original excuse ended
Missing the appeal deadline while deciding whether it's worth challenging
Assuming a single penalty covers all late filings when several different regimes may be involved
Overlooking that each partner in a partnership can receive their own separate penalty
Not sure where you stand?
Get a confidential, no-obligation read on your situation from a specialist who deals with HMRC every day.
What happens next
Knowing the typical sequence of events helps you feel more in control and know roughly what to expect at each stage.
You check the penalty notice for accuracy and identify your grounds for appeal, if any
You submit an appeal to HMRC within the stated deadline
HMRC reviews the appeal and either cancels, reduces, or upholds the penalty
You can request a statutory review if you disagree with HMRC's decision
Unresolved disputes can be escalated to the independent First-tier Tribunal
Multiple penalties across different filing types or partners are reviewed and appealed separately if needed
Each penalty notice carries its own deadline, which needs tracking individually
Frequently asked questions
The questions we're asked most often about this specific situation, answered in plain English.
Do I get a penalty if I don't owe any tax?
Yes — late filing penalties are generally based on the return being late, not on whether tax is owed, so even a nil return can attract a penalty if filed after the deadline.
How much do late filing penalties increase over time?
They typically start with a fixed initial penalty and increase at further milestones the longer the return remains outstanding, so filing as soon as possible limits further escalation.
What counts as a reasonable excuse for late filing?
Generally circumstances genuinely outside your control, such as a serious illness or a system failure, rather than routine issues like being busy or relying on someone else without following up.
Does the penalty increase the longer I wait to appeal?
The penalty itself is generally fixed once issued for that filing delay, but further penalties can apply if the return remains unfiled, so filing and appealing promptly is generally the safer approach.
Can a penalty be cancelled entirely?
Yes, if HMRC accepts a genuine reasonable excuse covering the whole period of the delay, or if a factual error in the penalty itself is identified.
What if I filed on time but HMRC says I didn't?
This is worth checking carefully, since submission confirmations or postal evidence can sometimes show a return was filed correctly despite a penalty being issued in error.
Do all partners in a partnership get penalised for a late partnership return?
Yes, a late partnership return can trigger a separate penalty for each partner individually, in addition to the partnership's own filing obligation.
Are Company Tax Return penalties the same as Self Assessment penalties?
No, they follow their own separate rules and escalation structure, so a business late with both types of return could face penalties calculated under two different regimes.
Can I set up a Time to Pay arrangement instead of appealing?
Yes, if the penalty and any tax due are correct but you need time to pay, a Time to Pay arrangement is a separate option from disputing the penalty itself.
What if my accountant made the filing late, not me?
Relying on an agent doesn't automatically count as a reasonable excuse, though the specific circumstances of what went wrong are still worth explaining if you decide to appeal.
Does an appeal pause the penalty while it's being considered?
Not automatically — it's worth checking with HMRC whether payment is expected while an appeal is under review, to avoid additional interest accruing unnecessarily.
Can penalties be reduced through negotiation rather than a formal appeal?
HMRC's process is generally structured around reasonable excuse and factual accuracy rather than negotiation, though a well-evidenced case can still result in a penalty being reduced or cancelled.
Read the full guide
Related problem pages
Facing this situation yourself?
Get a confidential, no-obligation read on where you stand from a specialist who deals with HMRC every day.
Start your enquiryOr contact us directly