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Use this technical documentation for trust and estate returns if you’re a software developer working with the Self Assessment online service.
This guidance explains how the Fraud and Avoidance section of the Specialist Investigations directorate of HM Revenue and Customs carry out investigations.
Find out when you can claim additional loss relief, known as ‘agricultural relief’, if you have agricultural land included in your rental business.
How to claim tax relief under the Community Investment Tax Relief (CITR) scheme.
Find out how to complete a tax return for Lloyd's underwriters.
Use this technical documentation for partnership returns if you’re a software developer working with the Self Assessment online service.
This factsheet tells you about old Self Assessment penalty rules and when they apply.
Use this technical documentation for individual returns if you're a software developer working with the Self Assessment online service.
Use this helpsheet to work out Foreign Tax Credit Relief for Capital Gains and how to complete the Trust and Estate tax return.
Agent authorisation Self Assessment technical specifications for software developers.
Details of record keeping, enquiries, completion of Self Assessment returns, and interpretation of 'merely incidental' duties.
Get help if you’re a tax agent or adviser who has clients who must complete Trust and Estate Tax Returns.
Use this helpsheet to understand tax rules on non-resident entertainers and sportspersons.
If you received Horizon Shortfall Scheme (HSS) compensation between 6 April 2022 and 5 April 2023, you can get support about your Self Assessment tax return.
Find out how to report support payments relating to self-isolation due to coronavirus (COVID-19), on your Self Assessment tax return.
Use this technical documentation for individual returns if you're a software developer working with the Self Assessment Online service.
Use this guidance for support if you're a software developer working with the Self Assessment Online service.
Don’t include personal or financial information like your National Insurance number or credit card details.
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