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Use this guidance to help you decide if Capital Gains Tax is due and how much you need to pay.
Find out if you qualify for the Seafarers' Earnings Deduction.
Tax treaties and related documents between the UK and India.
Use the Self Assessment helpsheet to claim relief on dual residency, when there's a double taxation agreement between the UK and another country you live in.
Use the online service to register a deceased person's estate if you’re an executor, administrator or personal representative.
Tax treaties and related documents between the UK and Germany.
Learn more about your responsibilities if you’re running a small business including registration, tax returns, record keeping, tax bills and payments.
Find out which mortgage providers and lenders accept printed tax summaries.
Tax treaties and related documents between the UK and Ireland.
Learn more about getting started as an employer or running a small business including registration, payroll, tax returns, tax bills and payments.
Find out how tax works on pensions, savings and additional income, before and after you retire.
Find out the actual and average official rates of interest on beneficial loan arrangements.
Register your client’s estate online if you’re a tax agent or adviser.
Use these forms to send a quarterly return by post if you're acting on behalf of landlords based outside the UK.
Find out the rules for claiming Business Asset Disposal Relief which reduces the amount of Capital Gains Tax on a disposal of qualifying business assets on or after 6 April 2008.
Find information to help you fill in the Employment pages of your Self Assessment tax return.
Tax treaties and related documents between the UK and Switzerland.
Find information on completing the charitable giving section of your Self Assessment tax return.
January 2026 newsletter to update stakeholders on the latest news for tax-free savings.
Find out how to submit a trust data request to HMRC to get trust information, and what details we will share.
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