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Find out when you can expect to receive a reply from HMRC to a query or request you've made.
Find out how to appeal an individual or partnership Self Assessment penalty.
How to report your income and claim tax reliefs and any repayment due to you using the SA100 tax return, for 6 April 2025 to 5 April 2026.
Find and use tools and calculators that will help you work out your tax.
Use form SA1 to register for Self Assessment for any reason other than self-employment.
Use this online tool to help you find the right guidance and support if you owe money to HMRC for tax or penalties.
Get help with Self Assessment by using online tools and guidance, and watching HMRC YouTube videos.
Find software suppliers for tax returns, supplementary pages and attachments.
Find out about tax relief available when you sell or dispose of your main home.
Register for Self Assessment and Class 2 National Insurance when you've joined a partnership using form SA401.
Find out if you need to declare income from selling personal possessions, goods or services online, creating online content or renting out property using digital platforms.
Find out how all childminders can continue to get tax relief for wear and tear, household costs, food and drink, and other business expenses, following changes announced at Budget 2025.
Learn more about getting started with Self Assessment including registration, tax returns, tax bills and payments.
Find out about the Rent a Room Scheme if you're a trader, owner occupier or tenant.
Find information on completing the self-employment section of your Self Assessment tax return.
Find information on reporting income from pensions, pensions savings tax charges and claiming relief on pension contributions on your Self Assessment tax return.
Find out about Capital gains if you sell or dispose of a shareholding.
Use Self Assessment software to help populate your Self Assessment tax return.
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 to calculate your taxable profits.
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