UK Tax Deadline Calculator

Enter your year end or VAT quarter end and get the statutory deadlines instantly — Corporation Tax, CT600, Companies House accounts, and VAT.

When are my Corporation Tax and accounts deadlines?

Accounting year end

When is my VAT return due?

VAT quarter end

What about Self Assessment?

Self Assessment dates are fixed, not derived from your year end: online returns and the balancing payment are due 31 January following the end of the tax year; paper returns 31 October; the second payment on account 31 July. See the full UK tax deadlines calendar.

Deadlines tracked for every client

TaxStats AI watches CT, accounts, VAT and Self Assessment dates across your whole client base and flags what's due next.

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Corporation Tax payment due
Accounts due at Companies House (private company)
CT600 return due to HMRC