Whole of life insurance can reduce the inheritance tax your family pays, but only if you write the policy in trust. Left in your own name, the death benefit is added to your estate and can be taxed at up to 40% along with everything else. Placed in trust, the payout sits outside your estate entirely, reaches your beneficiaries without waiting for probate, and can be used to settle the tax bill on the rest of what you leave behind.
What Happens if the Policy Is Not in Trust
A whole of life policy you own in your own name forms part of your estate when you die. HMRC totals everything you own, subtracts debts, and applies inheritance tax to whatever sits above the tax-free threshold.1HM Revenue and Customs. IHT400 Rates and Tables The insurance payout is counted alongside the house, the savings, and the investments.
Take someone whose home, savings, and investments already total £400,000. A whole of life payout of £300,000 lifts the estate to £700,000. With a single person’s nil rate band of £325,000, the taxable portion is £375,000, producing an IHT bill of £150,000. The policy was bought to help the family, but without planning, more than a fifth of the combined value goes to HMRC.
There is a second, less obvious problem. The residence nil rate band, worth up to £175,000 per person when a home passes to a direct descendant, tapers away for estates above £2 million, reducing by £1 for every £2 over that figure.2GOV.UK. Work Out and Apply the Residence Nil Rate Band for Inheritance Tax A large insurance payout held in your own name inflates the estate value and can push it into the taper zone, wiping out an allowance that would otherwise have saved the family up to £70,000. Both thresholds are frozen until the end of the 2029/30 tax year, so more estates are drifting into IHT territory each year.3GOV.UK. Inheritance Tax Nil-Rate Band, Residence Nil-Rate Band From 6 April 2028
How Writing the Policy in Trust Fixes It
Writing a policy in trust means transferring legal ownership from you to a group of trustees you choose. Once the transfer is done, the policy is no longer yours for IHT purposes. When you die, the insurer pays the trustees directly, and the money sits outside both the estate calculation and the probate process.
Most insurers provide trust forms free of charge, and you can put a policy in trust at the point you take it out or at any time afterwards. You name your trustees, name your beneficiaries, and sign the deed. A solicitor is not compulsory, but taking legal advice on the wording is sensible for larger policies or complicated family situations.
Two trust structures are commonly used:
- Absolute trust: the beneficiaries are fixed at the outset and cannot be changed. Certainty, no flexibility.
- Discretionary trust: the trustees decide who receives what, guided by a letter of wishes you leave them. Flexibility if family circumstances shift.
There is a real trade-off. Once the policy is in trust, you no longer control it. You cannot cash it in, and you cannot change the beneficiaries on an absolute trust. You still have to pay the premiums even though you no longer own the policy. For most families the IHT saving makes the trade worthwhile, but it is worth understanding before you sign.
How the Premiums You Pay Are Treated
Once a policy is in trust, the premiums you pay count technically as gifts to the trust. In principle, gifts made within seven years of death can be pulled back into your estate.4GOV.UK. How Inheritance Tax Works: Thresholds, Rules and Allowances – Gifts In practice, most whole of life premiums fall inside one of two exemptions and never come into the calculation at all.
The main one is the normal expenditure out of income exemption. If your premiums are paid regularly out of your income, form part of your usual spending pattern, and still leave you enough to maintain your normal standard of living, they are fully exempt from IHT with no upper limit.5GOV.UK. Lifetime Transfers: Normal Expenditure Out of Income: Introduction This exemption is well suited to regular insurance premiums. Keeping clear records of your income and outgoings matters, because your executors will need to demonstrate the pattern to HMRC.
The second is the annual gift exemption of £3,000 per tax year, and any unused allowance from the previous year can be carried forward once, giving up to £6,000.4GOV.UK. How Inheritance Tax Works: Thresholds, Rules and Allowances – Gifts For smaller premiums, this alone can cover the full cost.
Joint Life Second Death Policies for Couples
Married couples and civil partners already benefit from the spousal exemption: whatever passes between them on the first death is free of IHT.6GOV.UK. How Inheritance Tax Works: Thresholds, Rules and Allowances The tax bill usually arrives on the second death, when the estate goes to the next generation. A joint life second death policy is built around this. It insures two lives but pays out only once, on the second death, which is exactly when the IHT is due.
Two advantages fall out of this. The payout arrives when it is needed rather than sitting unused for years. And insuring two lives for a single payout on the second death is cheaper than running two separate whole of life policies.
Sizing the cover comes down to what your estate is likely to exceed the combined thresholds by. With transferable allowances between spouses, the combined nil rate band can reach £650,000, and if the home passes to direct descendants the combined residence nil rate band adds up to another £350,000, giving a potential £1,000,000 tax-free.6GOV.UK. How Inheritance Tax Works: Thresholds, Rules and Allowances The policy should be sized to cover the IHT on whatever exceeds that combined figure, and reviewed every few years as asset values move.
Guaranteed Versus Reviewable Premiums
Whole of life policies come in two forms, and picking the wrong one can undo the whole plan years down the line.
A guaranteed premium policy fixes your monthly cost for life. What you pay at 40 is what you pay at 80. The premiums start higher because the insurer carries the risk that you live longer than expected.
A reviewable premium policy starts cheaper but is reassessed periodically, typically after the first ten years and then every five, with annual reviews at older ages. At each review the insurer checks whether the premium still supports the cover. If it does not, you either accept a higher premium or reduce the sum insured. Because the cost of life cover rises steeply with age, reviewable premiums can jump sharply at later reviews, sometimes doubling or tripling. If you cannot afford the new figure and stop paying, you may lose the policy and need fresh medical evidence to reinstate it.
For inheritance tax planning, where the whole point is a guaranteed payout whenever you die, a guaranteed premium is almost always the safer choice. A reviewable policy that becomes unaffordable at 75 defeats the purpose.
Using the Payout to Pay the Tax Bill on Time
HMRC expects inheritance tax to be paid by the end of the sixth month after the death. Die in January, and the deadline is 31 July.7GOV.UK. Pay Your Inheritance Tax Bill Miss it and interest runs at 7.75%.8GOV.UK. HMRC Interest Rates for Late and Early Payments
Probate often takes longer than six months, and executors cannot touch bank accounts or sell property until it is granted. The tax is due before the money to pay it is available. Some families take out bank loans to bridge the gap, paying commercial interest on top of a tax bill they already resent.
A whole of life policy held in trust removes the timing problem. Because the payout bypasses probate, trustees can release the funds within weeks and hand the money to the executors in time to meet the deadline. No loans, no forced property sales, no interest charges. Term insurance is cheaper, but it expires; a whole of life policy guarantees a payout whenever the death happens, which is what makes it useful for IHT planning in the first place.
Why This Matters More From April 2027
From 6 April 2027, most unused pension funds and death benefits will be included in the value of your estate for inheritance tax.9GOV.UK. Inheritance Tax on Pensions: Liability, Reporting and Payment Pensions have generally sat outside the IHT net until now, which has made them one of the most tax-efficient ways to pass wealth on. Once they are inside it, estates with a substantial pension pot will jump in value overnight, potentially triggering the RNRB taper or crossing the nil rate band for the first time.
A whole of life policy in trust becomes more useful in that context, not less. The pension will be taxed as part of the estate; the insurance payout, held in trust, still will not be. For families who were quietly relying on the pension exemption to keep them below the threshold, a whole of life policy is one of the more straightforward ways to replace that protection and make sure the next generation is not left scrambling to find the tax.