How deadlines are calculated.
ComplyClock combines Companies House register data with the tax profile you enter for each entity.
Companies House accounts
Uses the annual accounts next due date returned by Companies House for the company number on the entity.
Confirmation statements
Uses the confirmation statement next due date returned by Companies House and tracks the filing fee separately where applicable.
Corporation Tax payment
Uses the Corporation Tax period end from the entity profile, or the Companies House accounting reference date when available, then adds 9 months and 1 day.
Company Tax Return
Uses the same Corporation Tax period end and tracks the CT600 deadline 12 months after that period end.
VAT returns
Uses the selected VAT frequency. Monthly and quarterly VAT are tracked 1 month and 7 days after the period end; annual accounting is tracked 2 calendar months after the annual period end.
PAYE payments
Uses the selected PAYE frequency and tracks payment dates on the 22nd of the relevant month.
Self Assessment
Tracks the online return and first payment on account on 31 January, plus the second payment on account on 31 July.
Making Tax Digital for Income Tax
Eligible sole traders receive quarterly updates within the next 24 months, including earlier quarters in the current mandated tax year. Thresholds and start dates come from the rules register. Standard reporting periods run cumulatively from 6 April to 5 July, 5 October, 5 January and 5 April. The register sets the update day in August, November, February and May. The mandated year's existing Self Assessment return becomes the final declaration, due 31 January; payments on account stay unchanged.
Income bands are planning estimates. We do not store tax-return-year history; HMRC determines eligibility from the relevant earlier return. Check your actual start date with HMRC. Check HMRC eligibility guidance
Compliance rules register
Current and scheduled rules, with their sources and review status. Fixed timings stay in code. Identity verification and Making Tax Digital values drive tracked compliance deadlines.
Companies House accounts due date
Uses the annual accounts next due date returned by Companies House.
From 1 January 2000
Companies House annual accounts
Not yet confirmed by a reviewer
Review due
Companies House confirmation statement due date
Uses the confirmation statement next due date returned by Companies House.
From 1 January 2000
Companies House confirmation statements
Not yet confirmed by a reviewer
Review due
Confirmation statement fee (online)
£50
From 1 February 2026
Companies House fees from February 2026
Not yet confirmed by a reviewer
Review due
Corporation Tax payment timing
9 months and 1 day after the accounting period end.
From 1 January 2000
HMRC Corporation Tax payment deadlines
Not yet confirmed by a reviewer
Review due
Company Tax Return timing
12 months after the accounting period end.
From 1 January 2000
Not yet confirmed by a reviewer
Review due
Director identity verification transition end
17 November 2026
From 18 November 2025
Companies House identity verification
Not yet confirmed by a reviewer
Review due
17 November is the conservative transition backstop. Sources differ between 17 and 18 November; the exact end date needs reviewer confirmation. Individual due dates can be earlier.
Making Tax Digital for Income Tax threshold
£50,000
From 6 April 2026 · Until 5 April 2027
HMRC Making Tax Digital quarterly update direction
Not yet confirmed by a reviewer
Review due
Scheduled version
£30,000
From 6 April 2027 · Until 5 April 2028
HMRC Making Tax Digital quarterly update direction
Not yet confirmed by a reviewer
Review due
Scheduled version
£20,000
From 6 April 2028
HMRC Making Tax Digital quarterly update direction
Not yet confirmed by a reviewer
Review due
Making Tax Digital quarterly update day
7
From 6 April 2026
HMRC quarterly update periods and deadlines
Not yet confirmed by a reviewer
Review due
Monthly PAYE timing
22nd of the following month for electronic payments.
From 1 January 2000
Not yet confirmed by a reviewer
Review due
Quarterly PAYE timing
22 January, April, July and October for quarterly electronic payments.
From 1 January 2000
Not yet confirmed by a reviewer
Review due
First payment on account
31 January for the first payment on account.
From 1 January 2000
Not yet confirmed by a reviewer
Review due
Self Assessment return and balancing payment
31 January for the online return and balancing payment.
From 1 January 2000
HMRC Self Assessment deadlines
Not yet confirmed by a reviewer
Review due
Second payment on account
31 July for the second payment on account.
From 1 January 2000
Not yet confirmed by a reviewer
Review due
Annual VAT timing
2 calendar months after the annual VAT period end.
From 1 January 2000
HMRC Annual Accounting Scheme (VAT Notice 732)
Not yet confirmed by a reviewer
Review due
Monthly and quarterly VAT timing
1 calendar month and 7 days after the VAT period end.
From 1 January 2000
Not yet confirmed by a reviewer
Review due
A clearer view of what’s due
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