tag:www.gov.uk,2005:/search/guidance-and-regulation Guidance and regulation 2025-03-05T13:00:02+00:00 HM Government tag:www.gov.uk,2005:/guidance/hmrc-tools-and-calculators 2025-03-05T13:00:02+00:00 HMRC tools and calculators Find and use tools and calculators that will help you work out your tax. tag:www.gov.uk,2005:/guidance/check-employment-status-for-tax 2021-05-04T15:39:24+01:00 Check employment status for tax Use the Check Employment Status for Tax (CEST) tool to find out if you, or a worker on a specific engagement, should be classed as employed or self-employed for tax purposes.