Investment trusts vs unit trusts and OEICs

Choosing between an investment trust and a unit trust or OEIC comes down to how each one is built. A unit trust or OEIC grows and shrinks as people put money in and take it out, while an investment trust has a fixed number of shares that trade on the stock market. Here is how they differ on price, charges, risk and where you can hold them.

Investment trusts vs unit trusts and OEICs

An investment trust and a unit trust or OEIC are both collective investments: ways to pool your money with other people's and have a professional manager run it. The difference is in how they are built. A unit trust or OEIC is open-ended, so it issues new units or shares as people put money in and cancels them as people take money out. An investment trust is closed-ended, with a fixed number of shares that trade on the stock market, most of them on the London Stock Exchange for UK investors1.

That single structural difference drives almost everything else a buyer cares about. Because an investment trust's shares are traded rather than created on demand, its price is set by supply and demand and almost always differs from the value of the assets it holds. More often than not the shares trade at a discount to that value, so you can sometimes buy a trust for less than its underlying portfolio is worth3. A unit trust's price, by contrast, directly reflects the value of the assets held4.

On cost, investment trust fees tend to be lower than those for a unit trust or OEIC, and most annual management charges fall somewhere between 0.5% and 1.5%5. But the advantage has narrowed in recent years, and because trusts are dealt like shares you may pay one-off fees to buy and sell even where fund trading is free4.

Unit trusts and OEICs are professionally managed collective funds

A unit trust or OEIC pools money from many investors, and a fund manager uses it to buy shares, bonds, property or cash assets and other investments8. Unit trusts, offshore funds and OEICs can all be referred to generically as funds, and funds are usually structured as one or the other9. The two are close cousins: a unit trust is similar to an OEIC but issues units rather than shares11.

The legal difference matters more than it sounds. A unit trust is structured as a trust, and investors in it are not owners of the underlying assets. An OEIC is a company, and its investors are shareholders in it2. In both cases a trustee or depositary holds the legal title to the underlying stocks in the fund, which keeps those investments separate from the provider's own money and away from its creditors12. UK law defines a collective scheme investment as a share in an authorised OEIC, a unit in an authorised unit trust scheme, or a unit in an authorised contractual scheme13.

Because they are open-ended, unit trusts and OEICs grow and shrink with demand: they issue new units or shares when money comes in and cancel them when it goes out2. That keeps the price closely tied to the net asset value of the fund's investments9. It also means the fund can become very large, and that the manager has to buy and sell assets as investors move in and out. Each unit trust and OEIC fund carries its own specific risks, set out in its Key Investor Information Document14.

How an investment trust differs from a unit trust or OEIC

An investment trust is a public limited company, and it is closed-ended because the fund managers cannot redeem or create shares11. When you invest you become a shareholder in that company4. It is a single investment that gives you a share in a much larger portfolio, and investment trusts are sometimes called investment companies15.

The closed-ended structure has three consequences a buyer should understand.

  • The share price is set by the market. With investment trusts the price of shares is determined by supply and demand in the stock market, so the price paid almost invariably differs from the net asset value4. More often than not, investment trust shares trade at a discount3. You can sometimes buy a trust for less than the value of its underlying portfolio, and sometimes you have to pay more than it is worth if the trust is in demand18.
  • The trust can borrow. Investment trusts can usually borrow at lower rates of interest than you would get as an individual, through bank loans or special kinds of shares that work like IOUs3. Unit trusts are not permitted to gear, which makes borrowing an advantage investment trusts have over other kinds of fund1.
  • The trust can hold things a fund cannot easily hold. Investment trusts can invest in a much wider range of investments than other types of fund, including global companies, smaller companies, sectors, property and infrastructure1.

Most investment trusts are managed by an external management group, which may run several trusts, and the board of directors selects the fund manager1. The Association of Investment Companies classifies all investment trusts into sectors, usually based on regional focus, industry focus, or the trust's own investment objective19.

Fees and charges: investment trusts tend to cost less

Investment trust fees tend to be lower than those for a unit trust or OEIC7. Most annual management charges fall somewhere between 0.5% and 1.5%5. One independent review puts the range at 0.8% to 1.8% in most investment trusts, so the two figures do not agree exactly and the true range depends on which trusts you look at6.

Size is one driver. Large investment trusts often have lower costs than smaller ones because of economies of scale, which are often passed on to shareholders as trusts grow19. What the trust invests in is another. Investment trusts that invest in more specialist assets such as property, private equity or infrastructure are likely to have higher charges than those that invest in more conventional assets such as shares or bonds19. Venture capital trusts generally have higher running costs than other investment trusts, and most charge performance fees as well21.

The effect of charges compounds. On £10,000 invested for ten years with markets returning 6% a year, charges of 0.5% a year would leave a return of £17,081, while charges of 1% a year would leave £16,289, a difference of £7925.

Two caveats sit alongside the headline. Investment trusts will incur management charges, which can be high as most investment trusts are actively managed, and as most are actively managed they tend to have higher charges than tracker and index funds22. And because platforms treat investment trusts in a similar way to shares, you will likely have to pay one-off fees when you buy and sell trusts, even if fund trading is free4. The lower-cost advantage over open-ended funds has narrowed in the last few years4.

Spreading risk: trusts, funds or running your own portfolio

Both investment trusts and funds spread your money. Investing in a collective investment fund such as an investment trust gives you access to a broad portfolio of shares, which spreads risk and minimises the impact of any one company going bust or performing badly23. An investment trust can invest in lots of different companies' shares, providing instant risk diversification24. Investment trusts let you spread your risk and access investment opportunities you would not find on your own17.

The trade-off is that investment trusts are likely to be more volatile than equivalent funds, because of the combined effect of gearing and the discount4. They can be a little more risky than other collective investments such as funds and ETFs25, and they are considered slightly riskier than other types of funds such as unit trusts7. Venture capital trusts are higher risk than most other investment trusts because of the companies they invest in, and are generally more suitable for experienced investors21.

Running your own portfolio is the third option, and it changes the risk picture. Investing in individual shares tends to be riskier than investing in funds, though not always, and investing in funds is usually less risky than investing in individual company shares26. A side-by-side comparison of the three routes makes the differences plain.

FeatureInvestment trustsFunds (unit trusts and OEICs)Running your own portfolio
Wide spread of riskYesYesYes
Professional investment managementYesYesNo
Independent board of directorsYesNoNo
Low chargesYesNoYes
Can borrow to maximise opportunitiesYesNoYes
Often available at a discountYesNoNo

28

The table is one provider's summary of the three routes, and the "low charges" line reflects the annual charge rather than the total cost of dealing. The independent point stands: a fund gives you diversification and a manager, while a self-built portfolio gives you control and the full weight of any mistake.

Where you can hold investment trusts, unit trusts and OEICs

You can hold investment trusts, unit trusts and OEICs inside an ISA to shelter your money from tax up to a certain limit7. A stocks and shares ISA can hold several different types of fund, including equity funds, tracker funds, unit trusts and OEICs29.

Platforms and providers vary in what they accept. One general investment account offers over 3,000 unit trust and OEIC funds to choose from30. Another lets you invest in collective investment funds such as unit trusts and OEICs and in investment trusts31. A third offers unit trusts, investment trusts, OEICs and cash deposits in the same account32. A pension or bond wrapper may go wider still: one Section 32 buy-out bond lists OEICs, unit trusts, investment trusts, exchange traded funds, structured products, stocks and shares, venture capital trusts, government securities and term deposits34.

There are limits to watch. One share dealing service's price improvement does not apply to investment funds, meaning unit trusts and OEICs35. And a Bed & ISA, which moves investments into an ISA, is available across shares, investment trusts, trackers and bonds but not unit trusts and OEIC funds36. If you plan to move holdings into an ISA, check whether the platform treats funds and trusts the same way.

An open-ended fund issues and cancels units as investors move in and out; an investment trust has a fixed number of shares traded on the market.

Investment trust or unit trust: which suits which investor?

Neither structure is better in the abstract; each fits a different set of circumstances. What follows is what the evidence says about each, not a recommendation.

A unit trust or OEIC suits an investor who wants the price they pay to track the value of the underlying assets closely, who wants to deal in and out without a share price moving away from net asset value, and who prefers a fund that cannot borrow. Most investment funds are unit trusts, though some are exchange-traded funds, so this is the more common structure4.

An investment trust suits an investor who is comfortable with a share price that moves independently of the portfolio, who wants exposure to assets a fund cannot easily hold such as property or infrastructure, and who can accept the extra volatility that gearing and the discount bring1. Investment trusts are complex and are not suitable for everyone37. They have frequently out-performed open-ended rivals in the past, which can sometimes be explained by a combination of lower costs, the closed-ended structure and gearing, but past performance is not a guide to what happens next4.

A self-built portfolio suits an investor who wants to choose and monitor every holding, accepts that individual shares tend to be riskier than funds, and does not want to pay for professional management26.

What protects you, and where protection stops

Unit trusts and OEICs have a specific safeguard: a trustee or depositary holds the legal title to the underlying stocks in the fund, so those investments are protected from the provider's creditors12. That is a custody protection, not a guarantee of performance.

Neither structure protects you against investment loss. If the market falls, the value of your units, shares or trust holdings falls with it. What you can do if something goes wrong depends on the nature of the problem. Complaints about unit trusts and OEICs cover poor service, mistakes made or instructions not followed, payments not processed, investments mis-sold, and being unable to withdraw funds8. If a firm has treated you badly, the Financial Ombudsman Service can look at a complaint once you have been through the firm's own complaints process.

Before buying, read the fund's own risk disclosure. Each unit trust and OEIC fund has its own fund specific risks detailed in its Key Investor Information Document14. For investment trusts, the equivalent detail sits in the trust's own documents and its annual reports.

Sources40 cited
  1. Investing in funds Scottish Widows
  2. About funds Fidelity
  3. Why choose investment companies Association of Investment Companies
  4. Investment trusts explained Which?
  5. Choosing an investment company Association of Investment Companies
  6. Are fund charges eating into your returns? Which?
  7. What is an investment trust? HSBC UK
  8. Unit trusts and OEICs: poor service, mistakes made or instructions not followed Resolver
  9. OEICs vs unit trusts HSBC UK
  10. Funds Interactive Investor
  11. What are the different types of funds? Artemis
  12. How is my money protected? Fidelity
  13. Finance Act 2022 legislation.gov.uk
  14. Investor Portfolio Service Aegon
  15. Consumer guides Association of Investment Companies
  16. Your guide to investment companies Association of Investment Companies
  17. What are investment companies Association of Investment Companies
  18. What can I invest in AJ Bell
  19. Sector classification Association of Investment Companies
  20. Costs Association of Investment Companies
  21. VCTs Association of Investment Companies
  22. How to invest for income Which?
  23. What are funds and why invest in them Association of Investment Companies
  24. Invest for children Aberdeen Investments
  25. Your investment options Halifax
  26. Income ISA portfolio Interactive Investor
  27. Targeted support investment suggestion Vanguard
  28. Investment trusts and funds Interactive Investor
  29. The investments you can hold in a stocks and shares ISA Which?
  30. Describe the features of your unwrapped general investment account Quilter
  31. Modular iPlan Nucleus Financial
  32. Premiere and Premiere Europe accounts Canada Life UK
  33. Prestige accounts Canada Life UK
  34. Section 32 key features document Transact
  35. Barclays Price Improver Barclays
  36. Bed & ISA AJ Bell
  37. What are investment trusts? Quilter
  38. Unit trusts and OEICs: payment not processed Resolver
  39. Unit trusts and OEICs: investment mis-sold Resolver
  40. Unit trusts and OEICs: unable to withdraw funds Resolver

Related guides

OEICs, unit trusts, SICAVs and other fund structures
Fund Structures ComparedThe legal structures behind open-ended funds, and the differences between OEICs, unit trusts and offshore SICAVs.
Fund managers: who runs the funds you buy
Fund ManagersWhat a fund manager does and how the fund's charges show up on a statement.
What are shares and how do they work?
How Shares WorkWhat owning a share in a company means and how share prices move.

Frequently asked questions

Are investment trusts cheaper than unit trusts?

Often, yes. Investment trust fees tend to be lower than those for a unit trust or OEIC, and most annual management charges fall between 0.5% and 1.5%. But the gap has narrowed in recent years, and because trusts are bought and sold like shares you may pay one-off dealing fees even where fund trading is free. Large trusts often cost less to run than small ones, while trusts holding property, private equity or infrastructure usually charge more.

What is the difference between a unit trust and an OEIC?

Both are open-ended pooled funds run by a professional manager, and both can be called funds. The main difference is the legal wrapper: a unit trust is structured as a trust and you buy units, while an OEIC is a company and you buy shares. In a unit trust you are not an owner of the underlying assets, whereas an OEIC investor is. Both issue new units or shares as demand rises.

Do investment trusts and funds both spread my risk?

Yes. Both are collective investments, so your money is pooled with other investors' and spread across a broad portfolio of shares, which reduces the impact of any one company doing badly. An investment trust can also borrow to invest, which magnifies both gains and losses, and its share price moves with supply and demand, so it can be more volatile than an equivalent fund.

Can I hold investment trusts and OEICs in the same account?

Yes. Many general investment accounts, ISAs and pensions let you hold unit trusts, OEICs and investment trusts side by side. One platform offers over 3,000 unit trust and OEIC funds alongside other investments. Investment trusts and funds can both be held inside a stocks and shares ISA to shelter money from tax up to the annual limit.

Is it better to pick my own shares than buy a fund?

That depends on how much risk you want and how much time you have. Investing in individual shares tends to be riskier than investing in funds, though not always, and funds are usually less risky than single company shares. A fund spreads your money across many holdings and comes with professional management, while running your own portfolio means you choose and monitor every holding yourself.

Why would an investment trust trade at a discount?

An investment trust's share price is set by supply and demand on the stock market, so it almost always differs from the value of the assets it holds. More often than not the shares trade below that value, which is called a discount. That means you can sometimes buy a trust for less than its underlying portfolio is worth, but you may also pay more than it is worth when a trust is in demand.

Are investment trusts riskier than unit trusts?

Investment trusts are considered slightly riskier than other types of fund such as unit trusts. They can borrow to invest, which unit trusts are not permitted to do, and their share price is set by the market rather than directly by the value of the assets. That combination can make them more volatile, though both remain collective investments that spread your money widely.