A whole of life policy is subject to inheritance tax if you still own it when you die: the death benefit is added to your estate and taxed at 40% on anything above your nil rate band. Writing the policy in trust before you die takes it out of your estate entirely, so the payout goes straight to your beneficiaries without being counted for tax or held up by probate.
Why the Payout Counts Toward Your Estate
Your estate for inheritance tax is everything you’re beneficially entitled to at the moment of death. The Inheritance Tax Act 1984 defines property broadly enough to cover rights and interests of any description, which includes the right to proceeds under an insurance contract.1GOV.UK. Inheritance Tax Manual – Section 4: Transfer of Value in Life and on Death If you own a whole of life policy at death, HMRC treats the death benefit the same as your house, savings, or investments.
The figure that goes into the calculation is the full payout, not the premiums you paid to get there. A policy paying £200,000 adds £200,000 to your estate even if you only paid £40,000 in premiums over the years. For an estate already close to the tax-free threshold, that can push tens of thousands of pounds into taxable territory.
The Thresholds That Decide Whether Tax Bites
The nil rate band is £325,000 per person. It has been frozen at that level since April 2009 and stays there until at least April 2030.2HM Revenue & Customs. Inheritance Tax Thresholds and Interest Rates Anything above it is taxed at 40%.3HM Revenue & Customs. IHT400 Rates and Tables
An extra £175,000 residence nil rate band applies if you leave a qualifying home to direct descendants such as children or grandchildren, taking one person’s tax-free threshold to £500,000. The residence allowance tapers away by £1 for every £2 the estate exceeds £2 million.4GOV.UK. Inheritance Tax Nil-Rate Band and Residence Nil-Rate Band Thresholds From 6 April 2026
Transfers between spouses and civil partners are exempt, so the tax question normally surfaces on the second death. Any unused portion of the first spouse’s nil rate band transfers to the survivor, and the same applies to the residence allowance, which can give a couple a combined tax-free threshold of up to £1 million where a home passes to children.5GOV.UK. Transferring Unused Basic Threshold for Inheritance Tax The transfer must be claimed within two years of the second death.
A quick example shows how the insurance turns a comfortable position into a taxable one. A couple with a £400,000 home, £80,000 in savings and a £250,000 whole of life policy have a combined estate of £730,000. Even with two full nil rate bands available, the policy alone is enough to move the estate well past the tax-free line.
Writing the Policy in Trust
The fix is to write the policy in trust. Legal ownership of the policy passes to trustees, so the death benefit is no longer your property when you die. It sits outside your estate, bypasses probate, and reaches your beneficiaries directly, often within weeks of the death certificate being issued.
You can do this when you take the policy out or at any point afterwards. Most insurers offer it at no extra cost and provide standard trust deed forms. The decision is irrevocable: once the policy is in trust you can’t pull it back, and decisions about the policy need the trustees’ agreement.
Choosing the Type of Trust
Different trust structures suit different family situations:
- Absolute trust. Beneficiaries are fixed from the outset and cannot be changed. Payouts are quick because there’s no discretion, but you lose the ability to add a later-born child or remove an ex-spouse.
- Discretionary trust. Trustees decide how and when to distribute funds, guided by a letter of wishes. Maximum flexibility, but it depends on trustees you’re confident will follow your intentions.
- Flexible trust. A hybrid: default beneficiaries receive income automatically, while trustees can appoint capital among a wider class.
- Split trust. Separates the death benefit from lifetime benefits. You keep access to terminal illness or critical illness payments while the death benefit stays in trust.
For straightforward families the insurer’s standard deed usually does the job. Complicated situations, such as blended families or business interests, are worth taking to a solicitor.
Watch the Gift With Reservation Rules
The trust only works if you genuinely give up your interest in the proceeds. HMRC’s gift with reservation rules catch arrangements where someone gives something away on paper but keeps benefiting from it. If the trust terms let the payout come back to you, for instance a discretionary trust that names you among the potential beneficiaries, HMRC can treat the policy as still part of your estate.6GOV.UK. Inheritance Tax Manual – IHTM14440 – Gifts With Reservation: Insurance Policies: The Property Given
Keeping a separate benefit like terminal illness cover does not cause this problem, because that benefit was never part of what you gave away. The danger is specifically that the gifted death benefit can flow back to you or your estate. Read the trust deed carefully before signing it.
What About the Premiums You Keep Paying?
Once the policy is in trust you no longer own it, but you’re still paying the premiums. HMRC treats those payments as gifts, which brings them under a separate set of inheritance tax rules.7HM Revenue & Customs. Inheritance Tax Manual – IHTM14453 – Lifetime Transfers: Gifts With Reservation: The Reservation on Insurance Policies: Reservation Examples Three routes keep those gifts from creating their own tax problem.
The cleanest is the normal expenditure out of income exemption in section 21 of the Inheritance Tax Act 1984. Premiums are exempt with no cap if they meet three conditions: they form part of your normal spending pattern, they come out of income rather than capital taking one year with another, and you’re still able to maintain your usual standard of living after paying them.8Legislation.gov.uk. Inheritance Tax Act 1984 – Section 21 This exemption fits whole of life premiums well because the payments are regular by nature. Keep records of income, spending and premiums; HMRC will scrutinise the claim after death, and thin records are where families come unstuck.
If the normal expenditure exemption doesn’t apply, the £3,000 annual gift exemption can cover the premiums. You can carry an unused prior year forward once, for a maximum of £6,000 in a single tax year.9GOV.UK. How Inheritance Tax Works: Thresholds, Rules and Allowances – Rules on Giving Gifts
Premiums above both exemptions become potentially exempt transfers, fully outside your estate only if you survive seven years.10Legislation.gov.uk. Inheritance Tax Act 1984 – Section 3A Taper relief can reduce the tax on gifts made between three and seven years before death, but only where the seven-year cumulative total of gifts exceeds the £325,000 nil rate band. For most people the normal expenditure and annual exemptions cover standard premiums comfortably.
When To Set Up the Trust
The biggest mistake is waiting. Writing an existing policy in trust today takes the death benefit out of your estate going forward, and that’s what matters: the payout is outside your estate as long as the trust is in place before you die. There’s no way to backdate it, but there’s also nothing lost by acting late rather than never.
For a new policy, put it in trust at the point of application. Most insurers include the forms with the paperwork and charge nothing for it. Leaving it for later risks forgetting entirely, and by the time the question comes up again the conversation has usually shifted from planning to damage control.