How many trustees does a charity need?

The answer

This page is for founders choosing how many trustees to have. It is also for existing boards worried that they have dropped below some legal line. It covers England and Wales, Scotland and Northern Ireland.

The Charity Commission, OSCR and CCNI all treat the number as mainly a matter for the governing document. In most cases there is no such line. But there is a quorum, and that is what stops you making decisions.

Is there a legal minimum number of trustees?

Only a SCIO in Scotland has a real statutory minimum. The board size most advice quotes is a model-constitution default, not law. Here is the position by structure (the structures themselves are compared in legal structures compared):

Structure	Statutory minimum	Where it comes from
SCIO (Scotland)	3	2005 Act s.50(2)(b) — the constitution must provide “for the appointment of 3 or more persons (‘charity trustees’)”
CIO (England and Wales)	1	Charities Act 2011 s.206(2)(b) — “one or more persons”
Charitable company	1	Companies Act 2006 s.154(1) — a private company must have at least one director
Charitable trust	No general minimum	Nothing general. A minimum bites in specific situations only: where capital money arises (LPA 1925 s.27(2)) and on discharge or retirement (Trustee Act 1925 ss.37, 39)

The SCIO figure appears to be the only true statutory minimum trustee number anywhere in UK charity law. Every other “three” you have read is a default or a recommendation. That includes any “three” in a model constitution, a funder’s application form or a governance blog.

The Charity Commission’s model articles for a charitable company (GD1) leave the number blank and recommend three. The model trust deed (GD2) also recommends three. Recommendations, not requirements. Presenting them as law tells a two-trustee charity it is in breach when it is not.

Two cautions on the England and Wales CIO figure.

First, s.206(3) and s.206(5) require the constitution to comply with the CIO regulations and to be in the form the Commission specifies. Neither the regulations nor the model constitutions were read on this point — 1 records the uncertainty. The safe statement is that the Act sets no minimum above one, not that a CIO can operate with one trustee.

Second, the SCIO rule is often attributed to the SCIO Regulations 2011. It is not there. Cite the Act.

The opposite myth is equally common. Trustee Act 1925 s.34 caps the number of trustees of land. But s.34(3)(a)–(b) expressly disapplies that cap to “land vested in trustees for charitable, ecclesiastical, or public purposes”. A charitable trust holding land is not limited by the cap. Any advice that says otherwise is reading the section without its exceptions.

Board meetings: no statutory minimum either

The question behind “how many trustees” is usually “are we doing this properly”. The next thing people ask is how often they must meet. There is no statutory minimum, for any structure, in any UK jurisdiction.

This is an established negative. It is confirmed by absence across the Charities Act 2011, the Companies Act 2006 and Part 7 of the CIO General Regulations read in full. It is also confirmed by a positive statement in CC48 that the number comes from your governing document.

CC48, word for word: “You must meet as often as your governing document says and you should meet more often if you think this is necessary to carry out your duties. If your governing document does not set out a minimum number, we recommend that you hold at least two trustee meetings a year.“

Read the grammar carefully. That recommendation is a fallback for silence, not a floor. It is a “should” under the Commission’s own must/should convention, and it engages only where your document says nothing.

All three UK regulators leave meeting frequency and quorum to the governing document. The agreement between them is itself worth knowing. This is not an England and Wales quirk. Setting the number for your board is covered in set your meeting rhythm and quorum.

Why quorum matters more than board size

Board size is a judgement. Quorum is a hard stop. Getting below it does not make your decisions irregular — it can make them worthless. Where quorum comes from depends on the structure.

• Charitable company, members’ meetings: a statutory default of two qualifying persons under Companies Act 2006 s.318(2), “subject to the provisions of the company’s articles”. This is the only statutory quorum number in the whole area. s.318(2)(a)–(b) adds two exclusions. Two representatives of the same corporation do not make a quorum. Neither do two proxies of the same member. Membership charities trip on this.
• Charitable company, board meetings: no statutory default. The articles govern.
• CIO: no statutory default. Regulation 36 only excludes conflicted trustees from counting towards quorum. Regulation 40(4) lets the court or the Commission set a one-member quorum. This applies only when the court or the Commission is ordering a meeting because the normal quorum cannot be achieved. That is a remedy, not a default.
• Unincorporated: nothing at all. Pure governing document.

CC48’s words on the consequence: decisions made at a meeting that does not meet the quorum requirements “are not valid and could be challenged”. The Commission has put it harder in an inquiry finding: “Any decision made without a quorum is invalid”. It has also treated inquorate decision-making as misconduct or mismanagement.

Those are two different sources with two different registers. The softer one is the guidance.

CC48 also offers a fallback where your document is silent: “you should have a quorum of one-third of all your charity’s trustees plus one.” That is advisory. It is not a statutory default and must not be treated as one.

One point is unresolved. It concerns the co-trustees of an unincorporated charitable trust where the governing document is silent. The open question is whether they must act unanimously or by majority.

That is common-law territory. The research could not pin it to a primary source. If your document is silent and your board is split, that is a question for a solicitor, not for a website.

What good practice suggests, and its status

The Charity Governance Code is a sector code, not a regulatory requirement, and it applies in England and Wales only. It suggests a board “of an appropriate size, typically between 5 and 12 trustees”, under Principle 8, Board effectiveness.

Take it as what it is. The Code operates on apply-or-explain and states in terms that compliance “is not a regulatory requirement”. A board of four that can make quorate, well-recorded decisions is not failing anything. A board of fifteen that cannot get eight people in a room is.

How a board works through the Code is on assess yourself against the Charity Governance Code.

Where this page applies, and where it does not

England and Wales: this page sets out the position in full for company, CIO and trust minimums, the land cap, meetings and quorum.

Scotland: covered on the point that matters most. The SCIO minimum is established word for word from the Act. The meetings position is also established. OSCR treats frequency and quorum as governing-document matters, exactly as the other two regulators do.

For other Scottish structures (trust, unincorporated association, company) no separate minimum-trustee-number fact exists in this corpus. Treat that as unresolved rather than assuming none applies.

Northern Ireland: covered. CCNI states that if a charity’s governing document sets no minimum, it must have at least one charity trustee. CCNI recommends at least three as good practice.

On this point, Northern Ireland is more explicit than England and Wales’ own guidance. That guidance states no equivalent “must have at least one” position at all.

CCNI also treats meeting frequency and quorum as governing-document matters. That is why the “no statutory minimum number of meetings” finding holds across all three jurisdictions. Northern Ireland has no CIO form, so that row of the table does not exist.

What to do about it

The number is a decision, and it should be recorded as one.

If you are forming the charity: recruit your founding trustees. Size the board around the skills you need and the quorum you can realistically reach. Then record each person’s agreement to act.

If the charity exists: set your meeting rhythm and quorum. That step produces what governs you here: a written rhythm and a quorum you can hit. It is also the point at which “how many trustees” stops being an abstract question.