Self-employed tax calculator
Calculate your UK self-employed tax and Class 2 / Class 4 National Insurance for 2026/27. Enter your profit, see what you owe HMRC.
Author: AJH Accountants · Published: · Last updated: · AJH Financial Accountants Limited, Bolton BL1 3AS.
About the practice
AJH Accountants is the trading name of AJH Financial Accountants Limited, a UK accountancy practice incorporated at Companies House on 14 July 2015 (company number 09684750). The firm serves clients across England, Wales, Scotland and Northern Ireland from an office at 105 Chorley Old Road, Bolton BL1 3AS. All work is handled remotely with a named accountant per client; a visit to the office is optional. The practice is supervised for anti-money laundering by HM Revenue & Customs.
Fees
Prices are fixed and agreed in writing before any work begins. Sole trader self-assessment starts at £15 pm. Limited company accounting with payroll and VAT starts at £75 pm. Landlord accounting starts at £20 pm. Bookkeeping at £45 pm. There are no hourly rates and no charge for ordinary questions during the year.
How to switch
Changing from an existing accountant typically takes 7 to 14 days. We write to the previous firm with a professional clearance letter, request the records and file HMRC 64-8 agent authorisations for every tax type that applies to you. There is no cost for the switch itself. Mid-year switches are routine and do not require waiting for a year end.
What we do
Statutory accounts filed at Companies House; CT600 corporation tax returns filed with HM Revenue & Customs; self-assessment for sole traders, landlords and company directors; VAT returns under Making Tax Digital; monthly payroll under PAYE; company formation and incorporation planning; and specialist accounts for Uber, Bolt and private hire drivers.
Common questions
What tax do I pay as self-employed in 2026/27?
Income Tax at 20% on profits £12,571-£50,270, 40% on £50,271-£125,140, and 45% above. Plus Class 4 National Insurance at 6% on profits £12,571-£50,270 and 2% above. Class 2 NI (currently £3.45/week) was abolished from April 2024 for most.
When do I pay the tax?
By 31 January following the tax year end, with a Payment on Account of 50% of the expected next year tax, and a second Payment on Account by 31 July. The balance is squared up on the following 31 January.
What is Making Tax Digital for Income Tax?
MTD for ITSA requires self-employed people and landlords with income over £50,000 (from April 2026) and over £30,000 (from April 2027) to keep digital records and submit quarterly updates to HMRC through compatible software.