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Get help if you’re a tax agent or adviser who has clients with business profits to declare on Self Assessment and Company Tax Returns.
Find out what relief is available when transferring your business and assets in exchange for shares.
Use this helpsheet to fill in your Self Assessment tax return and the trading pages of a Partnership Tax Return.
This factsheet tells you about old Self Assessment penalty rules and when they apply.
This introductory tax guide is intended for businesses looking at employee ownership for the first time, rather than professional advisers.
Guidance on identical returns for Self Assessment Online software developers.
Find out when you can claim additional loss relief, known as ‘agricultural relief’, if you have agricultural land included in your rental business.
Get help if you’re a tax agent or adviser who has clients with capital allowances for plant and machinery to declare on Self Assessment and Company Tax returns.
Check the availability and any issues affecting the Self Assessment payment plan service.
Get help to declare on Self Assessment tax returns if you’re a tax agent or adviser who has clients with Capital Gains Tax for land and buildings.
Use this helpsheet to work out Foreign Tax Credit Relief for Capital Gains and how to complete the Trust and Estate tax return.
How to claim tax relief under the Community Investment Tax Relief (CITR) scheme.
Agent authorisation Self Assessment technical specifications for software developers.
Get help if you’re a tax agent or adviser who has clients with Capital Gains Tax for shares to declare on Self Assessment tax returns.
Get help if you’re a tax agent or adviser who has clients with Capital Gains Tax for trusts and estates income to declare on Self Assessment tax returns.
Find out how to complete a tax return for Lloyd's underwriters.
Details of record keeping, enquiries, completion of Self Assessment returns, and interpretation of 'merely incidental' duties.
Use this technical documentation for individual returns if you're a software developer working with the Self Assessment Online service.
Use this technical documentation for individual returns if you're a software developer working with the Self Assessment online service.
Find out how to report support payments relating to self-isolation due to coronavirus (COVID-19), on your Self Assessment tax return.
Don’t include personal or financial information like your National Insurance number or credit card details.
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