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How to add your client authorisations to your agent services account for Making Tax Digital for Income Tax and check which authorisations already been added.
Find out how to apply to HMRC for a refund of Class 3 National Insurance contributions.
Use the online service or postal form CA8480 to apply for a refund of Class 2 National Insurance contributions.
Check the availability and any issues affecting the Making Tax Digital for Income Tax service.
Find out about changes to the remittance basis rules from 6 April 2017 to 5 April 2025.
Make a voluntary disclosure of any unpaid tax if you have income or gains from cryptoassets, including exchange tokens, NFT’s and utility tokens.
Tax treaties and related documents between the UK and Belgium.
Tax treaties and related documents between the UK and Sweden.
Check the availability and any issues affecting the Self Assessment: paying HMRC online service.
Use this technical documentation for individual returns if you're a software developer working with the Self Assessment online service.
Find out which investments qualify for Innovative Finance Individuals Savings Accounts (ISAs).
Learn more about your responsibilities as a company director.
Find information on completing the foreign income sections of your Self Assessment tax return.
Find out about Capital Gains Tax treatment for Disposal Relief and Deferral Relief for the Enterprise Investment Scheme (EIS).
Find out about first time residential purchases with funds from a Lifetime Individual Savings Account (ISA) if you’re a conveyancer.
How to apply for a reduced rate of withholding tax, and work out the tax due on worldwide earnings.
Tax treaties and related documents between the UK and Israel.
Tax treaties and related documents between the UK and Brazil.
Tax treaties and related documents between the UK and Luxembourg.
Find information on completing the other UK income section of your Self Assessment tax return.
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