How Do I Choose the Right Structure for My Charity
This guide explains how to choose the right legal structure for a UK charity including CIOs, charitable companies, trusts, and unincorporated associations.
Deciding how to structure a charity is one of the most important early choices trustees will ever make. The structure determines how the charity is governed, who is legally responsible, how fundraising works, what paperwork must be filed, whether the organisation can employ staff, and how much personal risk trustees face. A good structure supports growth and protects everyone involved. The wrong one can limit the charity’s activities or create legal complications later.
Because there are several structures available in the UK it is normal for new founders to feel unsure about which option is best. Each structure suits different types of charities depending on size, risk, purpose, and activities. This guide explains each option in clear terms, how the structures differ, what they mean for risk and compliance, and how trustees can make a confident decision.
Why Choosing the Right Structure Matters
A charity’s structure shapes almost everything about how it operates. It affects:
Legal responsibility and personal liability
Eligibility for grants and funding
The ability to employ staff
The types of activities the charity can run
How decisions are made
How easy it is to change trustees
Whether the charity can enter contracts
Reporting and filing requirements
In my opinion the most important factor is liability. Some structures give trustees personal legal responsibility for debts and claims. Other structures protect them completely. Understanding this difference helps avoid serious problems in the future.
The Four Main Legal Structures for UK Charities
There are four commonly used structures:
Charitable Incorporated Organisation (CIO)
Charitable Company Limited by Guarantee
Unincorporated Association
Charitable Trust
Each has clear advantages and disadvantages. The right structure depends on what the charity intends to do and how much risk is involved.
1. Charitable Incorporated Organisation (CIO)
The CIO has become the most popular modern structure for new charities. It was created specifically for charities and combines limited liability with simpler reporting.
What a CIO is
A CIO is a registered charity that has legal personality and can enter contracts in its own name. Trustees are protected from personal liability as long as they act properly.
Key features
Registered with the Charity Commission
Limited liability for trustees
Can enter contracts and hold property in the charity’s name
No need to register with Companies House
Only one regulator to deal with
When a CIO is suitable
Charities that plan to employ staff
Organisations that will own or lease property
Charities delivering services or entering contracts
Groups that want a professional structure without heavy admin
Advantages
Full legal protection for trustees
Simple reporting structure
Created specifically for charities
Clear governance rules
Disadvantages
Can take longer to register initially
Slightly less well known to certain funders
Harder to convert into a different structure later
In my opinion most new charities choose a CIO because it provides the best balance between protection and simplicity.
2. Charitable Company Limited by Guarantee
Before CIOs existed this was the main structure for incorporated charities. It is still widely used by larger and older charities.
What it is
A limited company that is also a registered charity. It has two regulators: Companies House and the Charity Commission.
Key features
Trustees are also company directors
The charity must file company accounts
Limited liability for trustees
Separate legal personality
When this structure is suitable
Large charities with complex finances
Organisations used to company reporting
Groups that require a more corporate governance model
Advantages
Strong governance framework
Well understood by banks, funders, and lenders
Easy to enter contracts and employ staff
Disadvantages
Dual reporting to Companies House and the Charity Commission
Higher administrative burden
Greater risk of filing penalties
In practice this structure works well for established or complex charities but feels heavy for smaller start ups.
3. Unincorporated Association
This is the simplest and most informal structure. Many small local groups start this way.
What it is
A group of people coming together for a charitable purpose without creating a separate legal entity. The charity cannot hold property or enter contracts in its own name.
Key features
Easy to set up
Suitable for small volunteer led groups
No limited liability
No separate legal identity
When it is suitable
Small community groups
Organisations with no staff and minimal risk
Groups that meet informally and run low cost activities
Advantages
Very simple
No registration needed unless applying to become a registered charity
Minimal paperwork
Disadvantages
Trustees have personal liability
Hard to employ staff
Cannot take on leases or large contracts
Difficult to scale
I believe this structure only suits charities with extremely low risk and no plans to expand.
4. Charitable Trust
A charitable trust is governed by a trust deed and run by trustees who manage charitable assets on behalf of beneficiaries.
What it is
A legal arrangement where trustees hold money or property for charitable purposes. Trusts are common where a charity does not need a membership or company style structure.
Key features
Focuses on stewardship of funds
Can be registered as a charity
Trustees often have long term control
Suitable for
Grant making charities
Charitable legacies
Philanthropic funds
Foundations
Advantages
Simple for holding and distributing money
Clear governance
Works well for fund giving organisations
Disadvantages
No limited liability
Harder to run trading activities
Structure can feel rigid
Trusts are ideal for charities focused solely on giving grants rather than providing services.
The Most Important Factor: Liability
One of the biggest differences between charity structures is whether the trustees carry personal liability for debts or legal claims.
Structures with personal liability:
Unincorporated association
Charitable trust
If a claim is made these trustees can be personally responsible.
Structures with limited liability:
CIO
Charitable company limited by guarantee
These structures protect trustees as long as they act properly and follow legal duties.
In my opinion this alone is enough for most modern charities to choose a CIO or charitable company.
Questions to Ask Before Choosing a Structure
Trustees should consider several key questions. The answers naturally point toward the right structure.
1. Will the charity employ staff
If yes, an incorporated structure is recommended. Only CIOs and charitable companies offer full protection.
2. Will the charity rent or own property
Property requires legal identity. CIOs and charitable companies are suitable.
3. Will the charity run services or take on contracts
Service delivery requires insurance, contracts, and safeguarding. Incorporated structures are safest.
4. Is the charity purely grant making
A charitable trust is often the simplest.
5. Does the charity expect rapid growth
Incorporated structures scale more easily.
6. Does the charity want light admin
A CIO offers simpler reporting than a charitable company.
7. How much risk is involved in day to day activity
More risk means more need for limited liability.
8. Does the charity need flexibility to change rules later
CIOs and charities limited by guarantee are easier to adapt than trusts.
How Each Structure Handles Governance
CIO governance
Constitution sets rules
Trustees manage the charity
Can have voting members or trustee only membership
Annual reporting to the Charity Commission
Charitable company governance
Memorandum and articles of association
Trustees are company directors
Must hold board meetings and keep company registers
Must file annual accounts and confirmation statements
Unincorporated association governance
Governed by a simple constitution
Trustees personally responsible
Very flexible but low protection
Charitable trust governance
Trust deed sets rules
Trustees have strict duties
No membership structure
A charity should choose the model that matches how it wants to make decisions.
How Each Structure Handles Fundraising and Grants
Some funders prefer or require incorporated structures. CIOs and charitable companies tend to attract more formal funding because:
They show stronger governance
They can take on obligations
Liability is clearer
Financial reporting is standardised
Unincorporated associations sometimes struggle with large grants because funders worry about legal and financial risk.
Trusts can receive significant donations but are usually used for giving not delivering services.
If a charity plans to apply for large grants in the future an incorporated structure may be beneficial from the start.
How Trading Activities Affect the Choice
If a charity plans to run trading activity such as:
Selling goods
Running a charity shop
Providing services
Running paid events
An incorporated structure offers better protection. Charities that take on trading risk often need a trading subsidiary, and incorporated charities can own subsidiaries more clearly.
Unincorporated associations and trusts find trading more complex and riskier because trustees are personally liable.
Administrative Requirements for Each Structure
CIO
Annual report and accounts to the Charity Commission
No Companies House filing
Moderate admin
Charitable company
Accounts to Companies House
Accounts and report to the Charity Commission
Confirmation statement
Higher admin
Unincorporated association
Light admin but harder to evidence governance
May still need accounts if registered
Charitable trust
Medium admin
Trust law rules apply
If a charity wants simpler administration a CIO is often the best choice.
Cost Differences Between Structures
CIO registration is slower but not more expensive long term
Charitable companies cost more because accountants must prepare company accounts
Unincorporated associations are cheap to run
Trusts depend on complexity
Cost should not be the only factor but it does influence start ups with tight budgets.
Real UK Examples
Example 1: Small Community Group Setting Up a Local Food Project
They have no staff, low income, and only run small events. An unincorporated association suits them because risk is low.
Example 2: Charity Planning to Employ Staff and Lease Space
This charity needs legal identity and liability protection. A CIO is the best fit.
Example 3: Foundation Giving Out Grants
A charitable trust is ideal because the charity will not employ staff or deliver services.
Example 4: Organisation Planning Large-Scale Service Delivery
They expect contracts with councils and need strong governance. A charitable company is a good choice though a CIO may also work.
Example 5: Charity Aiming for Major Grants and Long Term Growth
A CIO provides credibility, legal protection, and manageable admin for expansion.
Step by Step: How to Decide on the Right Structure
Step 1: Identify the charity’s purpose
Clarify what the organisation actually intends to do.
Step 2: Assess risk
Think about employment, property, safeguarding, finances, and contracts.
Step 3: Decide how the charity will operate
Is it volunteer only, service based, grant giving, or a mix
Step 4: Consider future plans
If the charity may grow it needs a structure that scales.
Step 5: Choose level of liability protection
Low risk charities can use unincorporated models. Others need incorporation.
Step 6: Review governance needs
Decide whether you want members or trustee only control.
Step 7: Check paperwork obligations
Factor in reporting, accounts, meetings, and filings.
Step 8: Ask for professional advice
Experienced charity advisers can confirm whether a CIO or charitable company fits better.
In My Opinion: The Best Structure for Most New Charities
In my opinion a CIO is the best all round structure for most modern start ups. It offers the right balance of:
Limited liability
Legal personality
Simpler reporting
Good governance
No Companies House filings
Strong credibility with funders
It avoids the dual regulation burden of a charitable company and gives far better protection than an unincorporated association.
The only exceptions are:
Grant making foundations which suit trusts
Large complex organisations which prefer charitable companies
Very small low risk groups which suit unincorporated associations
Final Thoughts
Choosing the right structure is a foundation decision for any charity. It influences governance, liability, fundraising, staffing, and growth. There is no single correct answer for every charity but there is usually a structure that clearly fits once trustees assess their risks, ambitions, and operational needs.
A CIO is the most common choice for good reason. It protects trustees, simplifies administration, and gives the charity the legal identity it needs to grow. Trusts and unincorporated associations still have their place but suit narrower types of charities.
In my opinion trustees should take the time to make this decision carefully because changing a structure later can be difficult. A well chosen structure helps a charity operate confidently and responsibly for years to come.