Find out about which version of a taxonomy you should use to file a Company Tax Return.

Use this technical documentation for individual returns if you're a software developer working with the Self Assessment online service.

Use this form to claim to claim tax reliefs and expenditure credits for the creative industries.

Guidance on the tax rules affecting investment funds and fund managers.

A definition of the different types of venture capital schemes and how they work

This tax information and impact note explains the legislative changes that will make it easier for businesses to claim a repayment or remission of Customs Duty when bringing goods into Northern Ireland.

All aspects of company taxation including appeals, enquiries, payments and penalties

How to complete supplementary pages CT600M and what information you need to include.

Check changes and issues that may affect how you file your Company Tax Return.

Check a list of recent letters from HMRC to help you decide if a letter you’ve received is a scam.