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Use the online service to update details of an estate, authorise an agent, or close an estate.
Find out about the Capital Gains Tax treatment for civil partners and spouses in divorce and separation.
Find out how to work out the taxable amount on your employment-related shares and securities.
Find out about Capital Gains Tax treatment for Disposal Relief and Deferral Relief for the Enterprise Investment Scheme (EIS).
Register a new partner who is not an individual for Self Assessment, for example a company or trust, using form SA402.
Use this helpsheet to find out how Capital Gains Tax rules apply for share reorganisations.
Check the availability and any issues affecting the Self Assessment: paying HMRC online service.
Find information on claiming tax reliefs and allowances on your Self Assessment tax return.
Find out about tax reliefs on qualifying loans and alternative finance arrangements.
Find out about paying tax on the remittance basis if you're a UK resident who has foreign income and gains but do not live in the UK.
Find out if income from a trust or settlement, occurring or paid to someone else, is treated as the settlor’s income (Self Assessment helpsheet HS270).
Find out how to calculate gains on foreign life insurance policies and make entries on your tax return.
Use this helpsheet to understand how personal possessions, or chattels, are treated for Capital Gains Tax and how to calculate gains or losses.
How to claim relief on a Self Assessment tax return if you donate to charity through Gift Aid, Payroll Giving or gifts of shares, securities, land or buildings.
Find out about the Community Investment Tax Relief scheme if you invest in accredited community development finance institutions.
Find out how UK resident trusts are treated for Capital Gains Tax and what to include in your tax return.
Find information about the averaging tax relief available for authors or artists.
Get help if you’re a tax agent or adviser who has clients with capital or revenue expenditure to declare on Self Assessment and Company Tax Returns.
Find out if you’ve made a profit on approved mileage allowance payments claimed as a volunteer driver and need to pay tax.
Use this technical documentation for individual returns if you're a software developer working with the Self Assessment online service.
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