Deadlines & Tax Calendar Hub
All the key tax dates you need to know. Self Assessment, VAT, Corporation Tax, PAYE, and Companies House deadlines in one place.
Start here
Self Assessment
Registration, filing, and payment deadlines for Self Assessment.
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VAT
Quarterly VAT return and payment deadlines.
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Corporation Tax
Filing and payment dates for limited companies.
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PAYE
Monthly and annual PAYE payment and reporting dates.
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Companies House
Confirmation statement, accounts filing, and other company filings.
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Every UK tax deadline, one system
Each tax runs its own clock: Self Assessment on 31 January and 31 July, VAT one month and seven days after each period, Corporation Tax nine months and one day after year end, PAYE on the 22nd of every tax month, and Companies House on its own accounts and confirmation dates. The guides here cover each regime's dates, penalties, and quirks.
None of the dates are hard individually. What defeats businesses is the aggregate — five clocks running at once, each with penalties for slippage.
Deadline Lock: how we run this for clients
Every client's dates — registrations, filings, payments, across every tax they touch — sit in Deadline Lock, tracked with advance notification, with the underlying work prepared from records maintained year-round. The deadline becomes a confirmation, not an event.
If your current system is memory and hope, start with the guide for whichever tax bites next — or book the call and let us build the calendar properly.
Frequently asked questions
What are the main UK tax deadlines?
Self Assessment: 31 January (file and pay) and 31 July. VAT: one month and seven days after each period. Corporation Tax: payment at nine months and one day, CT600 at twelve. PAYE: the 22nd monthly. Companies House: accounts nine months after year end plus the annual confirmation statement.
What happens if I miss a tax deadline?
Automatic penalties in every regime — fixed amounts for filing, interest plus surcharges for payment, and points converting to fines for VAT. Acting immediately always shrinks the cost: file now, pay or arrange now. Each guide covers its regime's scale.
Can all my deadlines be managed for me?
Yes — that is Deadline Lock, one of Compliance Vault™'s three components: every date tracked with advance notification, and the work behind each deadline prepared from year-round records. It is how our clients stop thinking about this page.
Need help with deadlines & tax calendar?
Book a call and we will explain the next steps clearly.