When it comes to Inheritance Tax (IHT) planning, discretionary trusts remain one of the most powerful and flexible tools available.
They allow you to move wealth out of your taxable estate, protect assets for future generations, and maintain control over who benefits and when.
But as many wealthy families discover, moving substantial sums into a trust can trigger an immediate tax bill — known as a Chargeable Lifetime Transfer (CLT) — if the value of the gift exceeds your available Nil Rate Band.
There is, however, an elegant solution that often goes under the radar: using the Gift Out of Excess Income exemption.
When structured and documented correctly, this rule can allow regular gifts into a discretionary trust without triggering a CLT — effectively bypassing the normal £325,000 threshold.
Let’s unpack how this works and why it can be such a valuable strategy for long-term estate planning.
Why Gift into a Discretionary Trust?
A discretionary trust allows you to move capital out of your estate while still retaining some control. The trustees (who may include you or your chosen advisers) decide who benefits, when, and how much. This flexibility is particularly attractive for families who:
- Want to protect assets from divorce, creditors, or spendthrift beneficiaries.
- Wish to ensure wealth remains within the bloodline, rather than passing to in-laws or outsiders.
- Aim to reduce future IHT for their children and grandchildren by removing assets from their estate now.
Provided you survive seven years from the date of the gift, the amount you place into the trust normally falls outside your estate for IHT purposes. But there’s a catch: if the gift exceeds your available Nil Rate Band (currently £325,000 per person), you’ll face a 20% lifetime tax charge on the excess — payable immediately.
For example, if you gift £500,000 into a new discretionary trust, and have no available Nil Rate Band remaining, the £175,000 excess would suffer an immediate £35,000 tax bill. That’s before considering potential periodic charges every ten years thereafter.
It’s here that the Gift Out of Excess Income rule can offer a smarter path.
Understanding the Gift Out of Excess Income Rule
The “Gift Out of Excess Income” exemption is one of the most underused and least understood parts of UK inheritance tax law — but it can be extremely effective.
Broadly speaking, if you make regular gifts out of your surplus income, and those gifts don’t reduce your normal standard of living, they are immediately exempt from Inheritance Tax. There’s no seven-year survival period and — crucially — such gifts do not count as Chargeable Lifetime Transfers when made into a discretionary trust.
This means you can contribute to a trust each year (or even more frequently) without eating into your Nil Rate Band and without triggering an upfront IHT charge, as long as the payments meet the HMRC criteria.
To qualify, all of the following conditions must apply:
- The gift must be made out of income — not capital. Income includes salaries, pensions, dividends, rent, interest, and other recurring earnings.
- The gift must form part of a regular pattern — HMRC looks for evidence that the gifting is habitual or part of a planned arrangement. One-off gifts do not qualify.
- The gift must not affect your normal standard of living — after making the gift, you should still be able to maintain your usual lifestyle from your remaining income.
If these three conditions are satisfied, the amount gifted is immediately exempt from IHT and excluded from any lifetime transfer calculation.
Using the Rule to Fund a Trust
This exemption can be particularly valuable when used to fund a discretionary trust gradually over time rather than in one lump sum.
For example, suppose a retired couple has combined net income of £180,000 a year from pensions, investments, and property. Their annual expenditure averages £100,000, leaving £80,000 in surplus. Instead of allowing that surplus to accumulate (and inflate the taxable value of their estate), they could make regular gifts of £80,000 per year into a discretionary trust for their children and grandchildren.
Each gift, if correctly structured, would qualify as a gift out of excess income. There would be:
- No immediate IHT charge (no CLT created).
- No use of the Nil Rate Band, preserving it for other planning opportunities.
- Immediate removal of the gifted amounts from the taxable estate.
Over a decade, this could amount to £800,000 moved out of the estate completely free of Inheritance Tax — while also protecting the assets from divorce or future creditors via the trust structure.
The Importance of Documentation
HMRC requires strong evidence that each gift qualifies as a gift out of excess income. Without documentation, the exemption can be challenged on death, and the gifts may be retrospectively added back into the estate.
To ensure compliance, you should:
- Record your normal income and expenditure annually. Demonstrate that you have enough remaining income to maintain your usual standard of living.
- Keep a clear record of each gift, showing the date, amount, and source (e.g., pension income, dividends).
- Submit an IHT100 form to HMRC to formally claim the exemption for each tax year in which gifts are made.
It’s advisable to prepare a short written statement each year outlining the intention to make regular gifts out of excess income and to continue doing so while circumstances remain unchanged. Trustees should also keep parallel records confirming receipt of each gift into the trust.
Professional oversight is essential here — an adviser or accountant can help demonstrate the “regular pattern” of giving that HMRC expects to see.
Combining Strategies for Maximum IHT Efficiency
Many families combine both the Nil Rate Band allowance and the gift out of income exemption to move significant sums into trust over time. For instance:
- Use the £325,000 Nil Rate Band (or £650,000 for a couple with transferable bands) for an initial lump-sum gift into the trust.
- Then, fund the same or additional trusts annually from excess income, keeping new contributions outside the chargeable lifetime transfer regime.
This approach not only accelerates wealth transfer but also prevents future growth on the gifted funds from compounding the IHT problem. Investments held within the trust can then be managed for long-term growth and distributed to future generations as and when needed.
Inheritance Tax planning is rarely about one-off decisions. The most effective strategies are often those implemented gradually and consistently over time. The gift out of excess income rule is a prime example — a perfectly legal and powerful method to pass wealth to a discretionary trust, sidestep chargeable lifetime transfers, and reduce your taxable estate year after year.
However, the rules must be followed meticulously. HMRC scrutiny is high, and evidence must be maintained. For wealthy families with strong ongoing cashflow — particularly retirees with high pension income or business owners drawing dividends — this exemption can transform the efficiency of their estate planning when used correctly.
As with all trust and tax strategies, professional advice is essential. A well-structured discretionary trust combined with careful use of the gift out of income rule can create a lasting family legacy — free from unnecessary tax and protected for generations to come.
If you would like help putting together your death box or at least an overview of your current Inheritance Tax position then why not take advantage of our free 15 minute call. You can speak to a Chartered Financial Planner who will listen to your situation, give you an outline of what you need to consider and guide you in the right direction.
Risk warning:
Stock market linked investments and any income from them, can fall as well as rise and is not guaranteed. Any figures quoted are for illustrative purposes and should not be taken as a forecast or guarantee. Past performance should not be seen as an indication of future returns and clients may get back less than they have invested.
