Start a small business tax and accounts practice

Run a year-round online practice preparing tax returns and year-end accounts for small businesses on monthly or annual fees.

Startup cost£1k to £5k
Monthly revenue£1.5k to £6k
Time needed25+ h/week
First incomeMonths
  • £1k-5k
  • Full-time
  • Online

Estimates for a small start in the UK, not guarantees.

Official data

12,759 UK companies in this field, 18% registered in the last 2 years

SIC 69203 “Tax consultancy”. Source: Companies House, November 2026.

What it is

A full-time, mostly online practice preparing tax returns, year-end accounts and related filings for sole traders, partnerships and small limited companies. You work with clients' records through cloud software and deal with HMRC on their behalf.

Your first three steps

  1. Confirm your qualifications and experience cover the work you want to offer, and consider joining a professional body such as AAT, ATT or ACCA for credibility and support
  2. Get cloud accounting and tax software, professional indemnity insurance and a simple website with fixed-fee packages and an engagement letter template
  3. Win your first clients through local business groups, tradespeople, letting agents and referrals from bookkeepers, and set up a client onboarding checklist
Who pays

Small business owners, contractors, tradespeople and landlords who want one person to look after their tax each year.

How it makes money

Fixed annual or monthly fees per client, depending on the size of the business and the work involved. Steady repeat clients help smooth out the January rush.

Skills that help
  • Solid knowledge of small business tax and accounts
  • Confident with cloud accounting software
  • Organised, with good deadline discipline
  • Explaining tax plainly to business owners
Watch out for
  • Anti-money laundering supervision and client checks: check what applies to you before taking clients
  • Professional indemnity insurance, and employer's liability insurance if you hire staff
  • ICO data protection fee and secure storage of client financial records, so check what applies
  • Check which professional titles are protected before describing yourself as an accountant of any kind
  • VAT, payroll and company accounts can be complex, so only offer what you are competent to do
  • Missed deadlines can lead to penalties for clients, so build in clear cut-off dates and reminders

Deep research report · UK

Everything you need to start: small business tax and accounts practice

Researched with live web search for United Kingdom: real startup prices, the licences and rules, what others charge, a break-even example, how to find your first customers and a 30-day launch plan. With sources.

  • Startup costs with real prices
  • Licences, registration and rules
  • Pricing: what others charge
  • Break-even example
  • Finding your first customers
  • 30-day launch plan
  • Risks and how to reduce them
Ready in about 2 minutes · one-off payment, tax included

See a full sample report

Questions people ask

How much does it cost to start a tax and accounts practice in the UK?

Startup costs are typically around £1,000 to £5,000, depending on your software, insurance and how you find your first clients. These are estimates rather than quotes, so build your own budget before committing.

How much can a small business tax and accounts practice earn?

Monthly revenue is typically around £1,500 to £6,000, depending on how many clients you take on and which services you offer. The estimates assume at least about 25 hours a week, so treat them as a guide only.

What rules should I check before taking on tax clients?

Check anti-money laundering supervision and client checks, professional indemnity insurance, the ICO data protection fee, and which professional titles are protected before calling yourself an accountant. Only offer work you are competent to do.

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