What is the HMRC check employment status for tax tool?
Answered 11 March 2026
HMRC Check Employment Status for Tax (CEST) Tool
What the law says
Employment status for tax and National Insurance contributions (NICs) is not a matter of choice — it is determined by several factors, and the correct status determines who is responsible for calculating and paying tax and NICs to HMRC.
HMRC Guidance / Practice
What CEST is: The Check Employment Status for Tax (CEST) tool is an online tool that helps determine a worker's employment status for tax and NIC purposes. It provides HMRC's view of a worker's employment status based on the information provided, and can also be used to check whether changes to contractual or working arrangements would alter that status.
Testing and reliability: CEST was rigorously tested during development in conjunction with HMRC's lawyers against live and settled cases, and reflects employment status case law. Since its launch in 2017, HMRC has committed to continuous testing against emerging case law. The CEST matrix — the logic the tool uses to make determinations — is tested for consistency with settled case law.
Who can use CEST: CEST can be used by anyone who needs to understand employment status for tax and NICs purposes, including:
- Workers providing a service — to find out their own employment status (for each engagement) or to check a determination made by a hiring organisation
- Organisations hiring workers — whether hiring directly or through intermediaries. The hirer is often best placed to understand the contract and its terms
How the tool works:
- Whether you complete the tool as a worker or a hirer does not affect the outcome — it only affects how questions and outcomes are worded
- If the hirer knows or has already engaged the worker, CEST will ask more questions to capture additional information about working arrangements and the worker's own business
- If the hirer does not know the worker, fewer questions are asked, but HMRC will still stand by the determination reached
Relevance to off-payroll working: CEST is also a key tool in the context of the off-payroll working rules (from April 2021), helping hirers determine employment status and produce Status Determination Statements.
Further guidance on CEST is found at ESM11000 of HMRC's Employment Status Manual.
Citation sources
Watch a recorded webinar about off-payroll working rules from April 2021 — status determinations and disagreements. You will be given a brief summary of the off-payroll working changes from April 2021 and learn about: determining employment status and how the Check Employment Status for Tax tool can help you the status determination statement why you need to have a status disagreement process in place
What is in this guidance? What is Check Employment Status for Tax? Why do you need to know the employment status for tax and National Insurance contributions? Who can use CEST? ESM11006 Will HMRC stand by the results of CEST? ESM11010 Does HMRC keep records of when you use CEST? ESM11010 Do you have to use CEST? ESM11015 What CEST should not be used for ESM11015 CEST glossary ESM11020 What is Check Employment Status for Tax? The online CEST (Check Employment Status for Tax) tool helps you determ
This guidance has been withdrawn. Please refer to the guidance within section ESM0500 of this manual and HMRC’s Check Employment Status for Tax tool (CEST)- see ESM11000 for further advice.
Whether you complete the tool as a worker or a hirer will not affect the outcome. The tool uses this information to ensure the questions and outcomes are worded appropriately to address the person using the tool, but all users get the same questions. CEST asks what job role you are using the tool for to give HMRC insight on the user journey from different sectors. This question is anonymous and will not affect your outcome. CEST can be used by anyone who needs to understand employment status f