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Use this technical documentation for individual returns if you're a software developer working with the Self Assessment online service.
Tax treaties and related documents between the UK and Gibraltar.
Tax treaties and related documents between the UK and Serbia.
The rules on subscriptions and how to repair a Junior ISA if you're an ISA manager.
Tax treaties and related documents between the UK and Hungary.
Tax treaties and related documents between the UK and the Cayman Islands.
Find out about the treatment of Capital Gains Tax during a period abroad.
Ask for a review of a penalty charge for not registering or maintaining a trust, or appeal against a penalty decision.
Use this spreadsheet to make an annual return of information to HMRC if you’re an Individual Savings Account (ISA) manager.
Tax treaties and related documents between the UK and Argentina.
Tax treaties and related documents between the UK and Russia.
Tax treaties and related documents between the UK and Colombia.
Tax treaties and related documents between the UK and Indonesia.
Tax treaties and related documents between the UK and Mexico.
Tax treaties and related documents between the UK and Nigeria.
How payments to individuals and businesses who use the domestic and non-domestic Renewable Heat Incentive schemes are taxed.
Tax treaties and related documents between the UK and Philippines.
How to calculate your client’s tax position if you are a tax agent acting on their behalf and they’ve been affected by the public service pensions remedy (known as McCloud).
Calculate how much you have to pay your furloughed employees for hours on furlough and how much you can claim back.
Tax treaties and related documents between the UK and Bermuda.
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