Is Your Trust in the Wrong Wrapper? Five Signs Your General Investment Account Is Costing You

Most trustees don’t know what wrapper their investments are held in. Here’s why that matters — and how to tell if something’s wrong.

A trustee came to me with a straightforward question: “The trust has £500,000 with a wealth manager. They’re doing a decent job on the investments. Should I change anything?”

I asked one question she’d never been asked before: “What wrapper are the investments held in?”

She didn’t know. Most trustees don’t. The wealth manager had opened a General Investment Account — the default option — and nobody had ever questioned whether it was the right one for a discretionary trust.

It wasn’t. And the cost of that default decision was running into thousands every year.

Why the Wrapper Matters More Than the Investments

Trustees spend a lot of time thinking about what’s inside the portfolio. Which funds, which asset allocation, which risk profile. That’s important. But for a discretionary trust, the wrapper those investments sit in can matter just as much — sometimes more.

As we covered in our previous post on the 45% trust tax rate, discretionary trusts pay income tax at the highest rates in the system. There’s no personal allowance, no tax bands, no savings allowance. From the first pound above £500, it’s 45% on interest and 39.35% on dividends.

Different investment wrappers trigger these tax charges in different ways and at different times. Some generate taxable income every year whether you want it or not. Others are designed so that tax only arises when you choose to take money out. That difference — in how and when the tax hits — is what makes the wrapper so important.

Five Signs Your Trust May Be in the Wrong Wrapper

You don’t need to be a tax specialist to spot the warning signs. If any of the following sound familiar, it’s worth asking questions.

1. The trust is paying income tax every year on investments it hasn’t touched.

This is the most common sign. The trust’s SA900 tax return shows a liability for dividend income, interest income, or both — and the trustees haven’t withdrawn or distributed anything. The investments are just sitting there, but the tax bill arrives every year regardless. If income is being generated and taxed inside the trust without anyone asking for it, the wrapper is creating unnecessary tax events.

2. Fund switches are triggering capital gains tax.

If the wealth manager rebalances the portfolio or switches between funds, each sale can trigger a capital gains tax charge. The trust’s annual exemption is just £1,500 (and less if the settlor created multiple trusts), so even routine portfolio management can create a tax liability. If you’re seeing CGT charges on the trust’s return that relate to switches you didn’t specifically request, it’s worth asking whether the wrapper is creating avoidable taxable events.

3. The trust was set up for a minor or someone who doesn’t need income yet.

Many discretionary trusts exist to hold assets for beneficiaries who aren’t ready to receive them — children, young adults, or vulnerable individuals. If the trust’s purpose is to grow capital for the future rather than distribute income now, a wrapper that generates annual taxable income is working directly against that objective. The tax is paid, and because there’s no distribution, there’s no beneficiary reclaim to offset it.

4. Nobody has ever discussed the wrapper with you.

This one is surprisingly common. The wealth manager was appointed to manage the investments, and they opened the account type they’d use for any client. Nobody asked whether a discretionary trust needed something different. If you’ve never had a specific conversation about whether the investment wrapper is appropriate for a trust — as opposed to an individual — there’s a good chance it wasn’t considered.

5. The trust’s tax bill seems disproportionate to its investment returns.

If the trust is paying tax at 45% on income and gains at the prevailing trust rate, and the portfolio is generating a typical balanced return, the tax drag can consume a surprisingly large share of the annual growth. If you look at the trust’s net return after tax and fees and it feels like the investments aren’t really going anywhere, the wrapper may be the reason.

The Wealth Manager Blind Spot

This isn’t about bad investment management. Most wealth managers do a perfectly good job of selecting funds and managing risk. The problem is that many of them manage trust portfolios the same way they manage individual portfolios — because their expertise is in investment selection, not trust taxation.

A General Investment Account is the default. It’s the wrapper that gets opened when nobody asks for anything different. For an individual investor with a personal allowance, a savings allowance, a dividend allowance, and progressive tax bands, a GIA is often perfectly reasonable.

For a discretionary trust with none of those things, paying 45% from the first pound, the default can be the most expensive option available.

The question isn’t whether your wealth manager is doing a good job with the investments. It’s whether anyone has considered whether the structure around those investments is right for a trust.

A Word of Nuance

Before anyone panics: a GIA isn’t always the wrong answer.

As we discussed in our previous post, when trustees distribute income to beneficiaries, that income carries a 45% tax credit. If the beneficiary pays tax at a lower rate, they can reclaim some or all of it. For a trust that distributes income regularly to lower-rate or non-taxpayer beneficiaries, the effective tax cost may be significantly less than the headline 45%.

There are also trusts where the time horizon is short, where switching costs would outweigh the benefit, or where the existing structure is genuinely the most appropriate one once all the factors are weighed up.

The point isn’t that every trust should change its wrapper. The point is that every trust should have had the conversation about whether the wrapper is right. If that conversation hasn’t happened, the trust is relying on a default that may not serve it well.

What To Do Next

If any of the five signs above rang true, the next step is straightforward: ask.

Ask your wealth manager or financial adviser what wrapper the trust’s investments are held in, and why. Ask what the annual income tax cost of the current structure is. Ask whether alternative structures have been considered specifically for a discretionary trust.

If they can’t answer those questions clearly, or if the answer is “we use the same structure for all clients,” that tells you something important.

The right answer depends on your trust’s specific circumstances: the beneficiaries, the time horizon, the existing portfolio, the costs of change. It’s not something that can be worked out from a blog post. But it is something that can be worked out — and for many trusts, the result is a meaningful improvement in how hard the trust’s assets are working for its beneficiaries.

The Bottom Line

The investment wrapper is one of the most overlooked decisions in trust management. It’s not glamorous. It doesn’t involve picking stocks or timing markets. But for a discretionary trust paying 45% tax on every pound of income, the difference between the right wrapper and the default one can be tens of thousands of pounds over a decade.

Most trustees have never been asked the question. Now you know to ask it.

The Financial Conduct Authority does not regulate Trusts. The tax rates and thresholds mentioned are correct as of the 2024–25 tax year but may change. The value of investments can fall as well as rise. Professional advice should be sought before making investment decisions.