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Last updated: May 2026

69201M — Professional, Scientific and Technical Activities

SIC Code 69201Accounting and auditing activities

Recording commercial transactions for businesses or others, preparing financial accounts, examining accounts and certifying their accuracy (auditing), preparing personal and business tax returns.

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What This Code Means

The primary code for accountancy firms and practices. If your business provides bookkeeping services without qualified accountant oversight, 69202 may be more appropriate. Tax advisory firms that also do accounting should use this as their primary code. Many small accountancy practices also provide management consultancy services to their clients — if this is a significant revenue stream, add 70229 as a secondary code.

Businesses That Use This Code

  • Accountancy practices
  • Audit firms
  • Bookkeeping services
  • Tax advisory firms
  • Payroll service providers

Related SIC Codes

69202Bookkeeping activities
69109Activities of patent and copyright agents
70229Management consultancy activities
66190Other activities auxiliary to financial services

How to Register This SIC Code

You provide your SIC code when registering your company at Companies House. You can also update it on your confirmation statement if your business activity changes. You can have up to four SIC codes — the first should be your primary (highest revenue) activity.

Why Your SIC Code Matters

  • HMRC uses it to benchmark your income against sector norms
  • Insurers use it to assess risk and set premiums
  • Government grants and support schemes are allocated by SIC code
  • Credit agencies categorise your business by SIC code

Read our full SIC codes explained guide for more detail. Use CalcPad for business tax calculations.

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