Company structures

1931 Act vs 2006 Act Isle of Man Company

The Isle of Man has two principal company incorporation regimes: the Companies Acts 1931 to 2004 and the Companies Act 2006. This page compares the two regimes in detail to help you understand the structural differences before discussing your requirements with a licensed Isle of Man CSP.

The two regimes

Isle of Man companies can be incorporated under either the Companies Acts 1931 to 2004 (commonly called the "1931 Act" regime) or the Companies Act 2006 (the "2006 Act" regime). These are separate and distinct legal frameworks. A company is incorporated under one Act or the other; it cannot be incorporated under both simultaneously.

The two regimes were not designed to replace one another. The 2006 Act introduced a parallel framework with fewer formal constitutional requirements and a central role for a licensed registered agent. Both regimes remain active, and both continue to be used for a range of commercial, investment, and structuring purposes.

The choice between the two regimes depends on the proposed activity, ownership structure, governance requirements, counterparty expectations, and professional advice. Neither regime is automatically more suitable for any particular purpose or sector. This page sets out the principal structural differences to assist in early-stage understanding. It is not legal, tax, or structuring advice.

What is a 1931 Act company?

A 1931 Act company is a company incorporated under the Isle of Man Companies Acts 1931 to 2004. It follows a traditional company law structure broadly similar in form to other common law jurisdictions that descend from the UK Companies Acts.

The regime requires at least one member, at least two directors (both of whom must be individuals), at least one company secretary, a memorandum and articles of association, an authorised share capital structure with par value shares, and a physical Isle of Man registered office.

The 1931 Act framework is well established and broadly familiar to international banks, shareholders, and professional advisers with experience of common law company structures. Statutory registers are ordinarily kept at or accessible from the registered office. Certain registers and filings appear on the public record.

For a detailed treatment of 1931 Act requirements, see the 1931 Act company page.

What is a 2006 Act company?

A 2006 Act company is a company incorporated under the Isle of Man Companies Act 2006. The regime was designed to provide a more flexible and administratively lighter structure while maintaining a clear framework of statutory obligations, principally by placing defined duties on a licensed registered agent.

The 2006 Act requires at least one member and at least one director. There is no requirement to appoint a company secretary. The company must at all times maintain a licensed Isle of Man registered agent holding the appropriate licence — the company cannot be incorporated or continue in existence without one. A physical registered office must also be maintained.

The 2006 Act uses a solvency-based test for distributions rather than traditional capital maintenance rules. There is no authorised share capital: shares may be issued with par value or no par value. Bearer shares are prohibited.

For a detailed treatment of 2006 Act requirements, see the 2006 Act company page.

Comparison table

This table summarises the principal differences and similarities between the two regimes. It is a general summary only and does not constitute legal or professional advice.

Aspect1931 Act company2006 Act company
Governing legislationCompanies Acts 1931 to 2004Companies Act 2006
Registered agentNot requiredRequired at all times. Must hold the appropriate Isle of Man licence. The company cannot be incorporated or continue in existence without one.
Registered officePhysical Isle of Man registered office required at all timesPhysical Isle of Man registered office required at all times
Directors — minimum numberAt least two directors requiredAt least one director required
Directors — individual requirementsBoth directors must be natural persons (individuals)Individual directors must be aged 18 or over and must not be disqualified or an undischarged bankrupt
Corporate directorsPermitted subject to applicable conditionsPermitted only where the statutory licensing conditions applicable to that appointment are satisfied
Company secretaryAt least one company secretary required. One director may also act as company secretary where legally permitted.No statutory requirement to appoint a company secretary
Share capital modelAuthorised share capital model. Shares are issued with a nominal (par) value. Memorandum sets out the total authorised share capital divided into shares of a stated denomination.No authorised share capital. Shares may be issued with par value or no par value. Bearer shares are prohibited.
Memorandum and articlesMemorandum and articles of association required. Sets out company name, objects, share capital and other constitutional provisions.Memorandum of association required. Articles of association (or equivalent constitutional document) required.
DistributionsSubject to traditional capital maintenance and distributable profits rulesSubject to the statutory solvency test. Directors must be satisfied the company will satisfy the solvency test immediately after the distribution.
Statutory registersStatutory registers kept at or accessible from the registered office. Certain registers are publicly filed.Certain registers and records held by the licensed registered agent rather than filed publicly. Obligation to keep accurate records remains.
Annual returnAnnual return required to the Isle of Man Companies Registry, normally within one month of the return date.Annual return required. Normally forwarded by the registered agent within one month of the return date. Obligation to ensure compliance rests with the directors.
Tax returnSeparate obligation. Filed with Isle of Man Income Tax Division. Governed by a different timetable and requirements.Separate obligation. Filed with Isle of Man Income Tax Division. Governed by a different timetable and requirements.
Beneficial ownershipBeneficial ownership information must be identified, maintained and updated in accordance with applicable Isle of Man requirements.Beneficial ownership information must be identified, maintained and updated in accordance with applicable Isle of Man requirements.
Accounting recordsProper accounting records must be kept throughout the life of the company.Proper accounting records must be kept throughout the life of the company.
Familiarity with counterpartiesTraditional structure broadly familiar to international banks, shareholders, and professional advisers familiar with common law company law.Separate regime. Some counterparties may be less familiar with the registered agent model. Understanding of the regime by counterparties varies.

Key differences between 1931 and 2006 Act companies

While both regimes result in an Isle of Man company limited by shares in the most common form, the structural differences between them are material:

  • Registered agent: A 2006 Act company must have a licensed registered agent at all times. A 1931 Act company has no equivalent requirement.
  • Director minimum: A 1931 Act company requires at least two directors, both of whom must be individuals. A 2006 Act company requires only one director.
  • Company secretary: A 1931 Act company must have a company secretary. A 2006 Act company has no statutory requirement to appoint one.
  • Share capital: The 1931 Act uses an authorised share capital model with par value shares. The 2006 Act allows both par value and no-par-value shares and does not require an authorised share capital.
  • Distributions: The 1931 Act applies traditional capital maintenance and distributable profits rules. The 2006 Act applies a solvency test: directors must be satisfied the company will satisfy the solvency test immediately after the distribution.
  • Public record: Certain registers and filings are publicly recorded for 1931 Act companies. Under the 2006 Act, certain records are held by the registered agent rather than filed publicly. This does not reduce the obligation to maintain accurate records and does not constitute anonymity or confidentiality from lawful disclosure.
  • Constitutional documents: Both regimes require constitutional documentation, but the precise requirements differ. The 1931 Act requires a memorandum setting out the authorised share capital and articles of association. The 2006 Act has its own constitutional document requirements.

Registered agent requirements

One of the most significant structural differences between the two regimes is the requirement under the Companies Act 2006 for a licensed registered agent.

A 2006 Act company must at all times maintain a registered agent holding the appropriate Isle of Man licence. The registered agent holds prescribed records, makes certain filings, and acts as the Companies Registry's point of contact for the company. The company cannot be incorporated, and cannot continue in existence, without a licensed registered agent in place.

The registered agent role does not displace the directors' own legal duties under the 2006 Act or otherwise. Directors remain responsible for the lawful conduct of the company's affairs. The registered agent acts as an intermediary between the company and the Registry for certain purposes — it does not act as a director or assume the directors' responsibilities.

A 1931 Act company has no equivalent registered agent requirement. It must have a registered office in the Isle of Man, but no licensed intermediary is required to hold records or make filings on the company's behalf as a statutory matter (though a CSP may be engaged to do so by agreement).

For information on how the registered agent role works in practice and what to look for when selecting a provider, see Isle of Man company formation. To find a licensed CSP, use the Find a CSP service.

Director and governance considerations

Under the 1931 Act, a company must have at least two directors, both of whom must be natural persons (individuals). Under the 2006 Act, only one director is required, and an individual director must be at least 18 years old and not be disqualified or an undischarged bankrupt.

Corporate directors are permitted under both regimes, subject to applicable conditions. Under the 2006 Act, a corporate director may only be appointed where the statutory licensing conditions applicable to that appointment are satisfied.

Under both regimes, directors owe legal duties to the company. These duties are not displaced by the appointment of a CSP, a registered agent, or any other service provider. Directors are responsible for the lawful conduct of the company's affairs and must act in its best interests.

The 1931 Act requires at least one company secretary. The 2006 Act does not require a company secretary to be appointed, though one may be appointed voluntarily.

The appropriate approach to director appointments, management and control, and governance arrangements should be discussed with professional advisers, including in the context of tax residence, economic substance requirements, and the company's intended activities. See Isle of Man company tax for further context.

Share capital and corporate flexibility

The 1931 Act uses a traditional authorised share capital model. The company's memorandum sets out the total share capital the company is authorised to issue, divided into shares of a stated nominal (par) value. Share issues, transfers, and allotments must be properly approved and recorded.

The 2006 Act does not use an authorised share capital model. Shares may be issued with par value or with no par value. This provides greater flexibility in structuring share capital, though it does not reduce the obligations to maintain accurate registers or to record share transactions properly. Bearer shares are prohibited under the 2006 Act.

Under the 1931 Act, distributions are governed by the traditional capital maintenance and distributable profits rules. Under the 2006 Act, distributions are subject to a statutory solvency test: before a distribution is made, the directors must be satisfied that the company will satisfy the solvency test immediately after the distribution. This places a clear responsibility on directors and should not be understood as reducing the care or diligence required before a distribution is authorised.

The permitted company types available under each regime also differ. The 2006 Act expressly permits protected cell companies as a structure incorporated under that Act. Both regimes permit limited by shares, limited by guarantee, and unlimited structures, subject to the applicable requirements.

Ongoing administration

Both regimes require an annual return to the Isle of Man Companies Registry and proper accounting records to be maintained throughout the life of the company. Both regimes require beneficial ownership information to be identified and maintained in accordance with applicable Isle of Man requirements.

Under the 1931 Act, the annual return is submitted to the Registry directly and must be filed within one month of the return date. Certain records appear on the public register.

Under the 2006 Act, the annual return is normally forwarded to the Registry by the registered agent within one month of the return date, though the obligation to ensure compliance rests with the directors. Certain records that are publicly filed for a 1931 Act company are instead held by the registered agent for a 2006 Act company. This does not reduce the underlying obligation to maintain accurate records.

The Registry annual return and the company's Isle of Man income tax return are separate obligations. The tax return is filed with the Isle of Man Income Tax Division and governed by a different timetable. See Isle of Man company tax for further information.

Not every 1931 Act company is required to file full accounts publicly. Audit and account filing requirements depend on the company's circumstances. Professional advice should be sought on the obligations applicable to a specific company.

Which structure may be appropriate?

The appropriate structure depends entirely on the client's specific circumstances: the proposed activity, ownership, governance requirements, counterparty and banking expectations, tax residence considerations, economic substance obligations, and the requirements of any applicable regulatory framework.

Neither the 1931 Act nor the 2006 Act regime is automatically more suitable for any particular activity, sector, or outcome. Some clients and counterparties may have a preference for one regime over the other based on familiarity, established practice, or the specific requirements of a transaction or relationship. Others may find the 2006 Act model better suited to their governance and administrative preferences.

The following general observations may assist in early-stage thinking, but should not be treated as guidance on the appropriate structure for a specific situation:

1931 Act considerations

  • Traditional structure familiar to many international counterparties, banks, and advisers
  • Requires at least two individual directors and a company secretary
  • Uses authorised share capital and par value shares
  • Certain registers and filings appear on the public record

2006 Act considerations

  • Requires a licensed registered agent at all times — cannot exist without one
  • Requires only one director; no company secretary required
  • Solvency-based distribution test; no par value shares permitted
  • Certain records held by registered agent rather than filed publicly

The appropriate structure for your requirements should be discussed with a qualified professional adviser and an Isle of Man corporate service provider. A licensed CSP will be able to explain how each regime works in practice, what the ongoing administration involves, and which structure is likely to be most appropriate for your circumstances.

About this guide

This guide has been prepared using relevant Isle of Man primary sources and practical understanding of the Isle of Man compliance and CSP environment. It provides general educational information only and does not constitute legal, tax, regulatory or other professional advice.

Last reviewed: 10 August 2026. Editorial Standards · Primary Sources

Sources and review

This page draws on publicly available Isle of Man primary legislation and official government guidance. The following sources were consulted in preparing and reviewing this page:

Last reviewed: 8 August 2026

Information and disclaimer: This page contains general information about the Isle of Man 1931 Act and 2006 Act company regimes and is not legal, tax, accounting, or professional advice. Isle of Man Company Formations is an introduction platform, not a corporate service provider, law firm, tax adviser, formation agent, or registered agent. Before incorporating a company or making any decision based on the information on this page, obtain professional advice from a qualified adviser relevant to your specific circumstances, including legal, tax, accounting, and regulatory advice as appropriate.

Get started

Ready to Find an Isle of Man CSP?

Tell us about your proposed company and requirements. We will review the information and, where appropriate, facilitate an introduction to a relevant Isle of Man Corporate Service Provider.