A married couple in a quiet Home Counties market town sell a three-bedroom semi for £650,000 this year, add a modest pension pot and some savings, and discover their estate now sits well inside Inheritance Tax territory — despite never once thinking of themselves as wealthy. That is the quiet mechanics of 2026: house prices climbed, the nil-rate band did not, and thousands of families who would have laughed off an IHT bill a decade ago are now doing the maths on it every summer.
Why an ordinary estate can now trigger a 40% tax bill
The standard nil-rate band has sat at £325,000 since 2009. It has not moved in seventeen years, while average UK house prices have roughly doubled over the same stretch. HMRC does not need to raise the headline 40% rate to collect more Inheritance Tax — it just needs to leave the threshold exactly where it is while everything else inflates around it. That is fiscal drag applied to death, not income, and it explains why HMRC's IHT receipts have kept climbing even though nobody in Westminster has announced a tax rise on estates for years.
Add the residence nil-rate band of £175,000, available when a main home passes to children or grandchildren, and a single person can in principle shelter £500,000 before IHT bites — £1 million for a married couple or civil partners using both nil-rate bands and both residence nil-rate bands together. That sounds generous until you remember what £1 million buys in large parts of southern England: a family home, a pension, and not much else. Anyone assuming Inheritance Tax is a rich person's problem should run their own numbers before assuming they are exempt.
The £2 million taper most people have never heard of
Here is the part that catches people out. The residence nil-rate band tapers away by £1 for every £2 an estate exceeds £2 million, and it disappears completely once the estate reaches £2.35 million. A widowed parent with a valuable London property, some buy-to-let flats and a decent pension can cross that £2 million line without ever feeling like the sort of person Inheritance Tax was designed to catch. Once the taper starts eating the residence nil-rate band, the effective marginal rate on that slice of the estate climbs well past the headline 40%, because you are losing an allowance and paying tax on the same pound.
Spouses and civil partners: why the second death is the one that matters
Transfers between UK-domiciled spouses and civil partners are entirely exempt from Inheritance Tax, however large the estate. That much most people already know. What fewer households grasp is what happens to the nil-rate band when the first partner dies leaving everything to the survivor: because no tax was due, none of the £325,000 nil-rate band or the £175,000 residence nil-rate band was actually used, and both unused percentages transfer to the surviving partner's estate for use on the second death. A couple who plan around this properly can therefore shelter up to £650,000 in combined nil-rate bands and £350,000 in combined residence nil-rate bands — the £1 million figure mentioned earlier — but only if the executors on the first death formally claim the transfer using form IHT402 within two years of the second death.
Miss that claim, or leave a will that accidentally uses up the first spouse's nil-rate band on gifts to children rather than to the survivor, and the family loses the uplift permanently. This is exactly the kind of detail a solicitor drafting a will should flag before signing, not one an executor should discover while settling an estate under time pressure.
Using the annual gift exemptions properly
Gifting is where most of the genuine planning happens, and it is also where most families do it badly — either gifting too little to matter, or gifting the right amount without the paperwork to prove it happened. Every UK resident can give away £3,000 each tax year completely free of Inheritance Tax, with no seven-year wait attached. Miss a year and you can carry the unused amount forward exactly once, meaning a couple who skipped last year's giving could jointly hand over £12,000 this tax year with the whole amount immediately outside their estate.
Smaller gifts stack on top of that £3,000 allowance rather than competing with it. You can give up to £250 to as many different people as you like in a tax year, provided none of them also received part of your £3,000 exemption. Wedding and civil partnership gifts have their own separate allowance too, and the amount depends entirely on the relationship:
- £5,000 from a parent of either the bride, groom or civil partner
- £2,500 from a grandparent or great-grandparent
- £1,000 from anyone else, including friends — a modest figure, but still fully exempt and still worth claiming
All three sit on top of the annual exemption, and all three are routinely forgotten by families who assume "the £3,000 rule" is the only tool in the box.
Gifts from surplus income — the allowance with no upper limit
The most underused exemption in this entire area is gifting out of normal income. Regular payments made from your everyday income, that leave you with enough left to maintain your usual standard of living, fall outside your estate immediately, with no cap and no seven-year clock. A grandparent paying a grandchild's school fees monthly out of a pension, or a director drawing a stable salary and passing on a slice of it every year, can use this to move meaningfully more than £3,000 a year out of a taxable estate — and unlike the small allowances, there is no ceiling on the amount as long as it is genuinely regular, genuinely from income, and genuinely does not dent your lifestyle. Keep a simple annual note of income, outgoings and the gift itself; HMRC has challenged this exemption before precisely because families rely on memory rather than records, and a shoebox of bank statements six years later is a poor substitute for a one-page log kept at the time.
None of this works retroactively. A gift made the week before someone dies gets no benefit from any of these annual exemptions if the allowance for that year has already been used, and grieving families discovering this after the fact is one of the more painful conversations an accountant has every year.
The seven-year rule, and why year four matters more than you'd think
Larger gifts that don't fit inside an exemption become what HMRC calls potentially exempt transfers, or PETs. Survive seven years after making one and it drops out of your estate entirely, with no tax due at all. Die within three years and the gift is taxed at the full 40% as though it never left your estate. Between years three and seven, taper relief reduces the rate: 32% in year four, 24% in year five, 16% in year six, and 8% in year seven, before it falls away to nothing at the seven-year mark.
There's a catch that trips up otherwise well-planned gifts: taper relief only reduces the tax charged on the gift itself — it does nothing if the gift falls entirely within the nil-rate band in the first place, because there was no tax to taper down from. Families sometimes celebrate reaching year four assuming they've banked a meaningful saving, when in fact the gift was covered by the nil-rate band all along and taper relief was never doing any work.
A single unbroken paragraph of caution belongs here: keep records. Date every gift, note the amount, keep bank statements, and tell your executor or accountant where those records live, because a PET that can't be evidenced with a date becomes a guessing game for HMRC and your estate — and guessing games rarely resolve in the taxpayer's favour.
What to actually do about it this summer
Start with the annual exemption if you have done nothing else — it is immediate, it needs no seven-year wait, and most families leave it unused year after year simply because nobody in the household thought to write the cheque. Review whether last year's £3,000 was used; if not, this tax year is your last chance to carry it forward before it is lost for good.
For larger sums, don't wait until an arbitrary "estate planning" moment that never quite arrives. The earlier a PET is made, the sooner the seven-year clock starts, and a gift made today at 2026 property values is frozen at today's value for IHT purposes even if the asset it represents grows substantially afterwards. Waiting two more years to "get it right" simply pushes the clock back by two years for no benefit at all.
Where an estate is genuinely large — comfortably over £2 million, with the residence nil-rate band tapering away — a conversation with a chartered accountant or a solicitor specialising in estate planning is worth the fee. Trusts, life insurance written in trust to cover a future IHT bill, and structured lifetime gifting all have a place, but they need advice tailored to the specific estate rather than a generic template. What every family can do without paying for advice is far simpler: use the £3,000 exemption every single year, document gifts from surplus income properly, and stop treating Inheritance Tax as something that only happens to somebody else's family.