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Get guidance from HMRC if you're a tax agent or an adviser.
This guidance will help you work out if you need to tell HMRC that you use or promote a tax avoidance scheme.
Find out what HMRC can do if you’re a tax adviser who is suspected of sanctionable conduct.
Tell HMRC if a company wants to enter the qualifying asset holding company (QAHC) regime, make an information return or make other notifications.
Check the availability and any issues affecting the trusts and estates registration service.
Check the availability and any issues affecting the registered dealers in controlled oil (RDCO) electronic returns online service.
A quick guide to spotting the signs of tax avoidance schemes, part of HMRC's 'Don't get caught out' campaign.
CT600 V3 (2026) and V2 (2009) RIM artefacts for Corporation Tax software developers.
Find out about statutory reviews, tax tribunal appeals and applying for temporary relief, if you disagree with HMRC’s decision about your tax adviser registration.
Find out how to create a CSV file to submit your declaration, what file layout to use and how to resolve problems with file upload failures.
Find out about common areas of error when reporting the Apprenticeship Levy or claiming Employment Allowance.
Check the availability and any issues affecting the payrolling benefits and expenses online service.
Find out whether you need to report to HMRC under the Cryptoasset Reporting Framework (CARF).
How to pay Air Passenger Duty, and how long it takes for your payment to reach HMRC.
How to set up temporary authorisation to deal with HM Revenue and Customs (HMRC) on a client’s behalf for compliance checks.
Guidance for software developers on the IRmark.
This factsheet tells you what information and documents you need to give HMRC for them to check your tax position.
Find out how a non-UK resident company trading in the UK through a dependent agent permanent establishment (DAPE) would register for Corporation Tax.
If you’re a UK agency or business placing or using temporary labour, find out what you can do to reduce your risk of using a non-compliant umbrella company.
Find out when and how to report to HMRC under the Cryptoasset Reporting Framework (CARF).
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