Self Assessment — service availability and issues
Updated 6 March 2026
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This publication is available at https://www.gov.uk/government/publications/self-assessment-service-availability-and-issues/self-assessment-service-availability-and-issues
Service availability
Full service available.
Sign in to Self Assessment online
Planned downtime
Sunday 5 April 2026 11:45pm to 2:30am Monday 6 April 2026
Due to scheduled maintenance, you will be unable to access our online service from 11:45pm on Sunday 5 April 2026 to 2:30am on Monday 6 April 2026.
We apologise for any inconvenience this may cause.
Service issues
None.
Other services
Check availability and issues for other services.