Self Assessment if you're self-employed
Please note: Self Assessment guidance from HM Revenue & Customs can be found on the GOV.UK website. We provide links to the key information below.
Estimate your Self Assessment tax bill
Find out how much you need to put aside for your Self Assessment tax bill by using HMRC's Self Assessment tax calculator.
Simplified expenses if you're self-employed
Use a simpler calculation to work out income tax for your vehicle, home and business premises expenses.
Business records if you're self-employed
Records and paperwork you must keep if you're self-employed as a sole trader or partner in a business: income, costs, profit, how long to keep records.