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Deadline Centre

Never miss a tax deadline again

Every key UK tax and company deadline in one clear place. Miss one and the penalties start quickly, so we have laid them all out, with the costly ones flagged.

Self Assessment VAT & payroll Company filing

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Key dates

Your UK tax calendar

The deadlines that matter most for individuals and businesses. The amber cards are the ones that catch people out.

31 January

Self Assessment & payment

File your online tax return and pay any tax due. An automatic 100 pound penalty applies if you miss it.

31 January

First payment on account

If you make payments on account, the first instalment for the year is also due now.

31 July

Second payment on account

The second payment on account towards next year's tax bill is due.

5 October

Register for Self Assessment

31 October

Paper tax return

Deadline for filing a paper Self Assessment return, if you do not file online.

1 month + 7 days

VAT return & payment

Most VAT returns and payments are due one month and seven days after the quarter ends.

On or before payday

Payroll RTI

Report payroll to HMRC on or before you pay your staff, every pay run.

31 May

P60s to employees

Give each employee their P60 for the previous tax year by this date.

6 July

P11D benefits

Report expenses and benefits in kind for employees and directors by this date.

9 months + 1 day

Corporation tax payment

Pay your corporation tax this long after your accounting period ends, before the return is due.

9 months

Company accounts

File your annual accounts at Companies House within nine months of your year end.

19th monthly

CIS return

Contractors must file the monthly CIS return and pay deductions by the 19th.

Each year

Confirmation statement

File your confirmation statement at Companies House at least once every year.

From April 2026

Making Tax Digital

MTD for Income Tax begins for sole traders and landlords with qualifying income over 50,000 pounds.

Frequently asked questions

What happens if I miss the Self Assessment deadline?

There is an automatic 100 pound penalty even if you owe no tax, with daily and further penalties the longer it is late, plus interest on late tax.

When is corporation tax due?

Usually nine months and one day after your accounting period ends, which is before the company tax return deadline.

Not sure which deadlines apply to me?

Tell us your situation through the quote builder or book a free call, and we will map your exact dates and handle the filing for you.

Not sure which deadlines apply to you?

Tell us your situation and we will map your exact dates and handle the filing, so nothing is ever missed.

Start your quote Book a call