#Simple CompanyTax
ProductWho we supportPricingFor accountants
Create account / Sign inStart free preview →
← Back to help centre

CT600 box 4 type of company codes explained

Last updated: 25 September 2026

1. Complete the task2. Check the resultOfficial sources

Short version. CT600 box 4 identifies the type of company. HMRC says to enter 0 if none of its listed types applies. A property management company uses code 7.

1. Read the company type

HMRC lists the following types for box 4. Enter 0 if none of the listed types applies:

  • 0: none of the listed types
  • 1: unit trust or open-ended investment company
  • 2: close investment-holding company
  • 3: company in its second or later year of liquidation, chargeable at the main rate
  • 4: qualifying asset holding company
  • 5: insurance company meeting HMRC's policyholder-profit condition
  • 6: members' club or voluntary association
  • 7: property management company
  • 8: charity or company owned by a charity
  • 9: residual company in a Real Estate Investment Trust group
  • 10: tax-exempt company in a Real Estate Investment Trust group
  • 11: non-resident company

A company's trading or property income is a separate question from its box 4 identity.

HMRC points to BIM24782 for property management companies. Read that guidance and choose the code that describes your company. The company's legal form alone does not decide box 4.

2. Check the result

SimpleCompanyTax#Simple CompanyTax offers code 7 for active ordinary companies through a checkbox on Financial data. It does not offer the code 7 choice on the dormant journey yet. The checkbox changes box 4, not the tax calculation. Review the CT600 preview, including both returns if your accounting period is longer than 12 months.

Official sources

  • HMRC, Completing your Company Tax Return, box 4
  • HMRC BIM24782, property management companies

Ready to file with SimpleCompanyTax?

File with SimpleCompanyTax#Simple CompanyTax from £10 per company, per year. £10 for dormant companies. £25 for eligible micro-entities. Annual subscription. Compare plans and what's included.

Start filing →See pricing
SimpleCompanyTax#Simple CompanyTax

Affordable UK corporation tax filing for micro-entities.

✓ HMRC-compatible✓ IRmark signed✓ FRC taxonomy validated

Product

  • How it works
  • Who we support
  • Pricing
  • For accountants
  • Changelog

Guides

  • Help centre
  • FAQ
  • How to file company tax
  • What is a CT600?

Company

  • About
  • Security
  • Support
  • Contact

Legal

  • Terms
  • Privacy
  • Cookies
© 2026 #Simple CompanyTax, a trading name of Infuzest Ltd (registered in England & Wales).
Made in the UK.