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This form is for clients and/or their partners who are self-employed sole traders.
Use form SA1 to register for Self Assessment for any reason other than self-employment.
Tools and guidance for businesses
What you must do when you sell your company, partnership or sole trader business
Financial information about a legal aid applicant’s business partnership or self-employed work.
These manuals contain guidance on self-employment.
Research exploring the choices made by self-employed people, and their views on the benefits and challenges of self-employment.
Contact HMRC if you're self-employed and have an Income Tax enquiry or need to report changes to your personal details
Overview of OTS work relating to simplifying tax reporting and payments for self-employed people.
How to know whether the operatives you deploy are employed or self-employed, and what this means for tax and national insurance.
How Universal Credit works if you are self-employed and how to report your self-employed income and expenses to Universal Credit every month.
Find out about tax reliefs and allowances available from HMRC if you run a business, employ people or are self-employed.
Find out what to do if you need to pay back some or all of a SEISS grant.
Use form CA5601 to pay self-employed Class 2 National Insurance contributions by Direct Debit.
Use the Check Employment Status for Tax (CEST) tool to find out if you, or a worker on a specific engagement, should be classed as employed or self-employed for tax purposes.
Payment options for your Self Assessment tax bill - Direct Debit, bank transfer, through your tax code, debit or credit card, cheque and pay weekly or monthly
Research looking at the income of self employed people.
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