4 Types of Penalties for Not Paying Business Taxes [2026]

Penalties for not paying business taxes in the UK can include interest charges, late payment and filing fees, and, in serious cases, HMRC enforcement action.

These penalties can stack up fast, and once interest starts running, the total amount owed can grow surprisingly quickly.

This guide covers what happens when you miss a tax deadline in the UK, the specific penalties for Corporation Tax, VAT, Self Assessment, and PAYE, and what you can do to stay on top of things.

Key points

• HMRC penalties apply automatically and escalate quickly 🚨
  HMRC uses a structured penalty system across Corporation Tax, VAT, Self Assessment, and PAYE. Missing deadlines can trigger fixed fines even if the mistake was accidental.
• Each tax type has its own penalty structure 🧾
  Corporation Tax, VAT, Self Assessment, and PAYE all follow different rules, but most combine late filing penalties, late payment penalties, and interest. Interest is charged separately and increases daily until the balance is cleared.
• Repeated late filing becomes significantly more expensive over time ⚠️
  HMRC increases penalties for consistent late behaviour. For example, Corporation Tax returns and PAYE systems apply higher charges after repeated failures, while VAT uses a points-based system that eventually triggers fixed fines once thresholds are reached.
• ANNA can help you avoid penalties 🚀
  Staying organised with deadlines, keeping records updated, and setting aside tax regularly are the simplest ways to avoid penalties. Tools like ANNA help reduce risk by automating bookkeeping, tracking real-time tax estimates, setting aside money in advance, and sending deadline reminders so nothing gets missed.

Why HMRC takes late tax payments seriously

HMRC's job is to collect the tax that funds public services, so it has a structured system of automatic penalties designed to encourage prompt payment. These aren't arbitrary fines – they're built into UK tax law and kick in whether or not HMRC sends you a reminder.

Missing a deadline once might feel like a small slip. But the financial consequences escalate the longer things are left unresolved, and repeated late filings can cost your business far more than the original tax bill.

The 4 types of penalties for not paying business taxes explained

Here are the four main types of penalties you could come across:

1. Penalties for late Corporation Tax filing

If you run a limited company, you pay Corporation Tax on your profits. The filing deadline for your Company Tax Return (form CT600) is 12 months after the end of your accounting period, but the payment deadline is earlier – 9 months and 1 day after your accounting period ends.

Here's how the late filing penalties work, as of 1 April 2026:

For returns due from 1 April 2026, the fixed late filing penalty increases from £200 to £1,000 per return. If a return is more than three months late and it's your third consecutive late submission, this fixed penalty increases to £2,000 for that return.

For returns due from 1 April 2026, the £200 fixed penalties rise to £1,000 each. If the return is more than three months late and it's your third consecutive late filing, the fixed penalty can rise to £2,000.

⚠️ Keep in mind

There are no late payment penalties specifically for Corporation Tax, but HMRC does charge daily interest on the unpaid amount from the day after the payment deadline.

As of April 2026, HMRC late payment interest sits at 7.75% per year. It increases daily, so even a few weeks' delay can increase what you owe surprisingly quickly.

2. Penalties for late VAT filing and payment

VAT penalties were reformed in 2023 and updated again from April 2025, introducing a points-based system that's designed to be fairer to businesses that make a one-off mistake, but stricter on those who miss deadlines repeatedly.

Late filing penalties

For every VAT return you submit late (including nil returns), HMRC adds one penalty point to your account.

Once you reach the threshold, which is currently four points for quarterly filers, you're charged a £200 penalty. You then receive a further £200 fee for every subsequent late submission until your points are cleared.

Late payment penalties

Here's a look at how late payment penalties work when it comes to VAT:

Separate from penalties, HMRC also charges interest on late VAT payments at the same rate as it does for Corporation Tax, currently 7.75% per year. This runs from the day after the deadline until the day you pay in full.

3. Penalties for late Self Assessment filing and payment

If you're a sole trader, freelancer, or company director who needs to file a Self Assessment return, the penalties follow a different but equally structured path:

Late filing penalties

These penalties depend on how late you submitted your return. Here's how it works:

In the most serious cases, where HMRC believes you've deliberately withheld information, the penalty for 12 months can rise to 100% of the tax due.

💡 Did you know?

ANNA can help you avoid penalties by filing your 2025/26 Self Assessment for free.

And if you've already paid for filing software elsewhere, ANNA will refund your filing fee when you switch.

Late payment penalties

Late payment penalties for Self Assessment depend on which penalty system applies to you: the current rules or the updated MTD penalty framework.

For non-MTD taxpayers, HMRC can charge:

• 5% of unpaid tax 30 days after the payment deadline
• A further 5% penalty at six months
• Another 5% penalty at twelve months

HMRC also charges late payment interest (7.75% per year), stacking from the original due date until the balance is paid.

A new regime applies to some MTD users from April 2026, with a broader rollout to Self Assessment taxpayers from January 2027.

Under that system, the penalties work like this:

HMRC charges interest on top of late Self Assessment tax at the same rate (7.75% annually) from the original payment deadline until you settle the bill.

4. Penalties for late PAYE

If you employ staff and run a payroll, you're responsible for paying PAYE (Income Tax and National Insurance deductions) to HMRC on time. This is usually by the 19th or 22nd of each month.

Late PAYE payments attract penalties based on how many times you miss the deadline in a tax year:

A further 5% penalty is charged if PAYE remains unpaid for more than six months, and another 5% if it's still outstanding after 12 months.

As with other taxes, HMRC also charges daily interest on late PAYE payments at the current rate.

What happens if you don't pay at all?

Persistent non-payment is treated far more seriously than a late payment. If HMRC believes you're intentionally evading tax, or if you ignore repeated demands, the consequences escalate well beyond financial penalties.

You could face:

• Enforcement action: HMRC can instruct bailiffs to recover assets, issue a county court judgment, or apply for a charging order on your property
• Director disqualification: Company directors can be personally investigated and, in serious cases, disqualified
• Criminal prosecution: HMRC can prosecute for deliberate tax evasion – convictions can result in unlimited fines and prison sentences of up to seven years

🧠 Good to know

It's worth distinguishing between tax avoidance (using legal means to reduce your bill) and tax evasion (deliberately concealing income or unpaid tax).

If you can't pay, contacting HMRC early may give you options, such as a Time to Pay arrangement, before matters escalate. Acting quickly can often help you prevent a temporary cash flow problem from becoming a much bigger issue.

Can you appeal an HMRC penalty?

Yes, and it's worth doing if you have a good reason for being late. You can appeal a penalty on the grounds of a reasonable excuse, which might include:

• Serious illness or a family bereavement close to the deadline
• Unexpected technical issues with HMRC's systems
• A natural disaster or other event genuinely outside your control

Things that HMRC generally doesn't accept as reasonable excuses include forgetting the deadline, relying on someone else to file on your behalf, or not having the funds to pay.

To appeal, you'll usually need to write to HMRC within 30 days of receiving your penalty notice.

How to avoid penalties in the first place

The most reliable way to avoid tax penalties is to know your deadlines and build systems that prevent scrambling at the last minute.

Here are a few practical steps that help:

• Know your key dates: For most businesses, the crucial ones are: 31 January (Self Assessment filing and payment), the 19th or 22nd of each month (PAYE), and one month and seven days after each VAT period (VAT return and payment). Corporation Tax is due nine months and one day after your accounting period ends.
• Keep your records up to date throughout the year: Trying to reconstruct a year's worth of transactions in January is how mistakes happen and deadlines get missed.
• Set reminders well in advance: Two weeks before a deadline gives you enough time to deal with any potential problems without panicking.
• Use software that automates the legwork: Linking your bank account to accounting software means your income and expenses are recorded in real time, instead of being pulled together at the last minute.

💡 Did you know?

ANNA's Auto Accountant helps you see what you owe as you go, no matter what type of tax you pay.

Stay on top of your taxes with ANNA

Missing deadlines often starts with disorganised records, forgotten due dates, or insufficient tax planning.

ANNA is built to help prevent that.

With ANNA, much of the admin that can lead to penalties runs in the background, helping you stay ahead of deadlines and avoid costly surprises.

You also get:

• Real-time tax estimates: See what you may owe as you go, so you can plan ahead rather than get caught out at payment time.
• Smart Tax Pots: Set money aside for VAT, Corporation Tax, or Self Assessment, helping you stay prepared when bills are due.
• Automatic bookkeeping: Get your income and expenses organised for you, helping keep records accurate and reducing the risk of errors or missed obligations.
• Deadline reminders: Stay on top of upcoming filing and payment dates, so important deadlines are harder to miss.
• Built-in business account and invoicing: Manage cash flow, payments, and admin in one place, making it easier to keep finances under control.
• 24/7 support when you need it: Get help if you're unsure about a deadline, tax obligation, or next step.

Make penalties a thing of the past – sign up with ANNA and enjoy effortless admin.