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Use form SA1 to register for Self Assessment for any reason other than self-employment.
Complete Self-Assessment form F3 or F3(S) for proposed, new and upgraded CHP Schemes
Find helpsheets, forms and notes to help you fill in the self-employment and partnership pages of your Self Assessment tax return.
Use supplementary pages SA800(TP) to record income from more than one trade or profession on your SA800 Partnership Tax Return.
Check the availability and any issues affecting the Self Assessment online service.
ESFA’s assurance and accountability requirements for post-16 providers including further education and sixth-form colleges and independent training providers.
Use supplementary pages SA103S to record self-employment income on your SA100 tax return if your annual business turnover was below the VAT threshold for the tax year.
Self assessment: finality and discovery.
How to use a before-and-after study to evaluate your digital health product.
Helping public health practitioners conducting evaluations on how to plan them.
Learn more about your responsibilities if you're running a small business including registration, tax returns, record keeping, tax bills and payments.
These manuals contain guidance on Self Assessment.
Register a new partner who is not an individual for Self Assessment, for example a company or trust, using form SA402.
Register a new partnership for Self Assessment using form SA400.
Use supplementary pages SA103F to record self-employment income on your SA100 Tax Return if your annual turnover was above the VAT threshold for the tax year.
Don’t include personal or financial information like your National Insurance number or credit card details.
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