Note: the GOV.UK announcement-stage summary page still cites the £1m headline figure announced 30 October 2024; the enacted FA 2026 figure verified against legislation.gov.uk is £2.5 million. The £1m headline drove much of the early commentary and planning advice through late 2024 and 2025; the enacted statute at IHTA 1984 s.124D (inserted by FA 2026 Schedule 12 paragraph 4) sets the operative threshold at £2.5 million. Any worked example or planning response should be tested against the £2.5m enacted figure, not the £1m headline that still appears on the GOV.UK summary.
On 6 April 2026, the most fundamental BPR/APR reform since the relief was introduced takes effect: the previously-unlimited 100% rate is capped at £2.5 million combined per estate under IHTA 1984 s.124D. Value above the cap attracts 50% relief instead of 100%, producing an effective IHT rate of 20% on the excess above the allowance. AIM-listed shares drop to 50% relief in a separate sub-tier that does not consume the s.124D allowance, from the same date. The reform was announced in the Autumn Budget 2024 and is now enacted in the Finance Act 2026.
For most pure buy-to-let landlords, the reform changes nothing. Pawson v HMRC [2013] UKUT 050 settled over a decade ago that residential letting is investment, not trading, and therefore does not qualify for BPR in the first place. The cap matters where the estate already qualified for relief: farming families with APR-eligible land, property developers with trading work-in-progress, serviced-accommodation operators meeting the Pawson trading bar, and mixed estates running an active trading business alongside an investment portfolio. For those segments the cap can add hundreds of thousands of pounds of IHT to estates that previously paid nothing. The mechanics below name the affected segments precisely, and sets out the planning responses available before the reform date.
For the wider planning context (where this reform fits within the cumulative 2024-2027 IHT package), see the IHT Decision Framework for UK Landlords. For the underlying BPR eligibility question (does my property qualify at all?), the deeper page is Does Business Property Relief Apply to Rental Property?
Free interactive tool
Free Landlord tax essentials tool
Check your landlord tax position
Our interactive tool is built for a larger screen. Tell us your numbers and a specialist will send your figure and the next sensible step, with no obligation.
What changed on 6 April 2026: the cap mechanics
Three concrete moves in the reform package.
- £2.5 million combined cap at 100% relief. Each estate gets up to £2,500,000 of combined BPR plus APR-eligible value at 100% relief under IHTA 1984 s.124D. The cap is single, not separate per relief; estates cannot stack £2.5m of BPR on top of £2.5m of APR.
- 50% relief above the cap. Qualifying value above the £2.5m allowance attracts 50% relief, meaning 50% of the value is chargeable to IHT at the standard 40% rate (an effective 20% on the excess).
- AIM-listed shares to 50% in a separate sub-tier. Shares listed on the Alternative Investment Market previously qualified for 100% BPR after 2 years' ownership. From 6 April 2026 they qualify only at 50%, and AIM holdings sit outside the s.124D allowance entirely (a separate 50% sub-tier that does not consume any part of the £2.5m).
The reform applies to deaths on or after 6 April 2026, and to chargeable lifetime transfers made on or after the same date. The anti-forestalling rule is mechanical rather than motive-based: a gift of qualifying property made on or after 30 October 2024 is reworked under the new rules where the donor dies on or after 6 April 2026 and within seven years of the gift, whatever the reason for the gift was.
Who is actually affected: four segments
1. Farming families with APR-eligible land
The most-discussed segment in the public reaction to the reform. Working farms typically qualify for APR at 100% on the agricultural value of farmland and farm buildings, with associated farmhouse relief where the farmhouse is occupied for agricultural purposes. A £5m working farm pre-reform attracted £0 of IHT; post-reform under s.124D, £2.5m sits above the £2.5m cap at 50% relief = £1.25m chargeable at 40% = £500,000 of new IHT. Farmer estates with land values typical for a larger arable or mixed farm in the UK can sit in the £3m to £10m range and are materially affected, though the £2.5m enacted threshold (not the £1m headline that still appears on the GOV.UK summary) means fewer farms are caught than the early commentary suggested.
2. Property developers with trading work-in-progress
Property development is trading where the activity is buying-developing-selling continuously, not holding for rental. Work-in-progress (land plus partly-built stock held for sale) is a trading asset and qualifies for BPR at 100% on the wholly-or-mainly-trading test. The cap applies. A developer holding £5m of WIP at death pre-reform paid no IHT on the trading element; post-reform, £2.5m sits above the cap and attracts £500,000 of new IHT at the 20% effective rate. The reform incentivises winding down WIP through completed sales before 6 April 2026, but the practical lead times for completion (12 to 24 months on residential schemes) mean many developers cannot exit before the reform date.
3. Serviced-accommodation operators meeting the Pawson trading bar
Serviced accommodation can qualify for BPR where the operator provides substantial additional services beyond simple letting: managed reception, daily cleaning, breakfast service, restaurant, concierge, comparable to a hotel rather than a holiday let. The Pawson decision sets a high bar; most serviced-accommodation businesses do not meet it. Where they do, the operation qualifies for 100% BPR pre-reform. Post-reform, the £2.5m s.124D cap applies, so a £5m hotel-style operation pays IHT on £2.5m of excess at the 50% rate (effective 20% IHT). The sister page on the Pawson test in the serviced-accommodation context covers the eligibility question in detail: Serviced Accommodation and BPR: Clearing the Pawson Trading Threshold.
4. Mixed estates with both trading and investment elements
The case that catches most family wealth at scale. A family with a £4m active trading business (manufacturing, services, professional practice) plus a £1.5m BTL portfolio plus a £1m main residence has a £6.5m estate. Pre-reform: £4m trading business at 100% BPR, £1.5m BTL at no BPR (investment), £1m main residence at standard treatment. Post-reform: £2.5m of the trading business at 100% BPR within s.124D, £1.5m at 50% BPR (effective 20% IHT on £1.5m = £300,000), BTL and main residence as before. Net effect: £300,000 of additional IHT on the trading element previously fully sheltered, materially less than the £600,000 that the £1m headline would have produced.
Who is not affected: pure BTL landlords
Worth saying explicitly. Most readers arrive holding a residential BTL portfolio, and the reform changes nothing for them, because residential BTL never qualified for BPR in the first place. Pawson v HMRC [2013] confirmed that residential letting is investment activity, not trading. The wholly-or-mainly-trading test at s.105(3) IHTA 1984, with HMRC guidance at IHTM25000, fails on the basic facts: a landlord collecting rent on residential property is making an investment, however actively managed.
The cap matters where the estate already qualified for relief. For pure BTL landlords:
- The IHT bill on the BTL portfolio at death is unchanged by the cap (was 40% above NRB and RNRB pre-reform, is 40% above NRB and RNRB post-reform).
- The persistent FIC-marketing claim that a limited-company structure delivers BPR on residential property is wrong, and the cap does not change that. The depth is at FIC IHT Treatment and the BPR Myth.
- For mitigation routes that actually work for a pure BTL landlord (lifetime gifting outside GROB, life cover written in trust, FIC share dilution for growth-transfer, downsize-and-gift), see the decision framework.
The landlord segment most affected by the cap is the small subset operating serviced accommodation at the Pawson-distinguishing trading bar. Former FHL operators who shifted to serviced-accommodation post-April-2025 may sit close to this line; the abolition of the FHL regime in April 2025 is itself a relevant context, covered in Serviced Accommodation Tax After FHL Abolition. For the incorporation alternative post-FHL-abolition, see Transferring a Former FHL Portfolio to a Limited Company.
Worked example: mixed estate with trading business plus BTL
The Singh-estate persona. Family-owned manufacturing company with a current open-market valuation of £2,500,000. Owner-managers (two spouses) own 100% of the shares. They also hold a residential BTL portfolio in their personal names worth £1,200,000 (with £200,000 of remaining mortgages). Main residence worth £900,000. Combined pensions £400,000. Combined cash and ISAs £150,000.
The trading company shares qualify for BPR (manufacturing is trading). The BTL portfolio does not (residential letting is investment, Pawson). Main residence is standard. Pensions enter the estate from 6 April 2027.
Estate sizing on the 2027/28 basis (pension included). Gross estate: £2,500,000 + £1,000,000 net BTL + £900,000 main residence + £400,000 pensions + £150,000 other = £4,950,000.
Pre-cap (illustrative, on pre-cap relief rules, holding the 2027/28 estate constant so the cap is the only variable): £2,500,000 BPR at 100% = nil chargeable. Remaining estate £2,450,000 less combined NRB £650,000 less RNRB (fully tapered, estate over the £2.7m extinguishment point that applies where both RNRBs are in play) = £1,800,000 chargeable at 40% = £720,000 IHT.
Post-cap (on 2027/28 rules at the enacted £2.5m s.124D allowance): the £2,500,000 trading-company value sits exactly at the cap; full 100% BPR on the whole £2.5m = nil chargeable on the company shares. Remaining estate £2,450,000 less combined NRB £650,000 less RNRB (still fully tapered) = £1,800,000 chargeable at 40% = £720,000 IHT. The cap adds nil additional exposure on this specific estate because the trading value sits at the allowance. Had the trading-company value been £4,000,000, the post-cap result would have been £1.5m above-cap at 50% (£750,000 chargeable, £300,000 of IHT at 40%), so the £2.5m enacted figure leaves more estates fully sheltered than the £1m headline would have.
Planning responses for the Singh estate: gift trading-company shares to children now (uses BPR at the time of gift; survives 7 years removes value from estate entirely, subject to anti-forestalling on gifts from 30 October 2024); check how the company shares are owned between the spouses, remembering that where the shares pass to the survivor the first £2.5m s.124D allowance is left unused and the survivor's executors can claim the unused percentage under s.124E; consider whole-of-life cover for any residual liability; review pension decumulation strategy in light of April 2027 inclusion.
Planning responses for affected estates
The four highest-impact moves before 6 April 2026, in priority order for most affected estates.
- Consider lifetime gifts of qualifying property. A gift made now locks in nothing. Anti-forestalling reworks any gift of qualifying property made on or after 30 October 2024 under the new rules where the donor dies on or after 6 April 2026 and within seven years of the gift. What a gift does deliver is the seven-year survival route, which takes the value out of the estate altogether, and the rolling seven-year allowance, which frees up again as older gifts drop out of the window. The 7-year clock starts at the gift date, so for donors in good health this remains the most direct route, provided nobody treats it as a guarantee.
- Plan both allowances, not just one. Each spouse has their own £2.5m s.124D allowance at death. Where qualifying property passes to the survivor, the first allowance is not consumed at all, and the survivor's executors can claim the unused percentage under s.124E; the mechanism is built to the same pattern as the transferable nil rate band, and like the nil rate band it has to be claimed by the executors rather than arriving on its own. Where qualifying property passes to children or other non-spouse beneficiaries on the first death, how ownership is split still decides how much of that first allowance gets used, so an ownership review is worth doing on its own terms. Spousal transfers under s.18 IHTA 1984 are exempt from IHT and (under s.58 TCGA 1992) no-gain-no-loss for CGT, so the transfer itself is tax-neutral.
- Review the trading / investment split in business structures. The BPR eligibility test is wholly-or-mainly-trading. Where a business has crept into a mixed trading-investment profile (e.g. a trading company that has accumulated significant property assets held for rental rather than business operations), the entire business may have lost BPR eligibility. Restructuring to ring-fence the investment side (often into a separate property holding company) restores BPR on the trading side and keeps the cap question relevant rather than the eligibility question.
- Reassess AIM portfolios held for IHT shelter. AIM portfolios held primarily to qualify for 100% BPR after 2 years' ownership are now at 50% in a separate sub-tier that does not consume the s.124D allowance. The total tax efficiency of the AIM-shelter strategy is meaningfully reduced. For estates with significant AIM allocations, the question is whether the funds are better deployed in life cover written in trust (which delivers a known IHT-paying outcome) or simply repositioned to non-AIM equities held outside the BPR-shelter framework.
Anti-forestalling rules and the legislative pipeline
The reform was announced in the Autumn Budget 2024 (30 October 2024) with an effective date of 6 April 2026, giving around 17 months of run-up. The anti-forestalling rule has three limbs and no motive test: the gift of qualifying property was made on or after 30 October 2024, the donor dies on or after 6 April 2026, and the death falls within seven years of the gift. An ordinary succession gift with no avoidance purpose at all is caught on those three facts alone. The enacted transitional features are as follows.
- Lifetime transfers made before 30 October 2024 are unaffected. Pre-announcement gifts retain their full pre-reform treatment regardless of when the donor dies, and no purpose or motive test is applied to them.
- Lifetime transfers between 30 October 2024 and 6 April 2026 receive the pre-reform 100% relief at the time of the gift, but where the donor dies within 7 years of the gift and after 6 April 2026, the failed-PET calculation applies the post-reform rules to the gift value above the £2.5m s.124D allowance. This is the window most actively used for pre-reform gifting; the planning must factor the failed-PET risk for donors not expected to survive 7 years.
- Trusts settled before 30 October 2024 each keep their own allowance for chargeable events, the 10-yearly periodic charge and exit charges included. They do not keep unlimited relief; they are capped in their own right. Property added to those trusts after the reform is subject to the same allowance and the same cap regime. The enacted anti-fragmentation rules (s.124G to s.124K) stop the same settlor creating multiple trusts on or after 30 October 2024 to multiply the allowance: trusts settled by that settlor on or after that date share a single allowance divided across them.
- Business reorganisations intended to maximise BPR-qualifying property within the £2.5m allowance are generally permissible where the underlying activity is unchanged. Reorganisations designed primarily to create artificial qualifying property attract general anti-avoidance scrutiny under the GAAR.
Where the law now sits. The reform is enacted, not pending. IHTA 1984 s.124D, inserted by Finance Act 2026 Schedule 12 paragraph 4, is the authority for the £2,500,000 allowance and for the 50% relief above it, and the AIM sub-tier and the trust anti-fragmentation rules at s.124G to s.124K are enacted alongside it. Test any worked example you rely on against the statute at legislation.gov.uk, not against the announcement-stage GOV.UK summary, which still carries the superseded £1 million headline.
The reform's interaction with the pensions-in-IHT change (effective 6 April 2027) is significant for affected estates. The two reforms together produce the most material change to UK estate planning for landlord-business families since the introduction of the residence nil-rate band in 2017. Practical planning needs to address both reforms together: a sequence that optimises for the BPR cap in 2025/26 may worsen the pension-IHT exposure for 2027/28 and vice versa.
Common misunderstandings about the cap
- "BPR is being abolished." No. The 100% rate is being capped at £2.5m under IHTA 1984 s.124D. Above the cap, 50% relief still applies (effective 20% IHT rather than the standard 40%). The relief continues to work; it just costs more above the cap.
- "My BTL portfolio is now caught." Not by the cap directly. Pure BTL never qualified for BPR. The reform changes nothing for pure BTL landlords.
- "I should just put my BTL in a company now to get BPR before the cap." The company structure does not deliver BPR on residential letting, before or after the cap. Pawson applies to the underlying activity, not the legal wrapper. See the FIC BPR myth page.
- "The £2.5m allowance is per relief, so I get £5m total." No. The £2.5m is combined across BPR and APR. Estates with both reliefs share the single s.124D allowance.
- "The headline figure is £1m, isn't it?" No. The 30 October 2024 announcement figure was £1m, and the GOV.UK announcement-stage summary still cites £1m, but the enacted statute in s.124D is £2.5m. The GOV.UK summary is stale; cite the legislation direct.
- "I can transfer the allowance to my spouse like the NRB." Yes, but only by claim. IHTA 1984 s.124E lets the survivor's estate claim the unused percentage of the first spouse's £2.5m allowance, mirroring the transferable nil-rate band shape. Without a claim the unused allowance is lost, so the executors must make it.
For the cross-cutting view of the 2026 landlord tax landscape (MTD, S24 stability, the April 2027 surcharge, and how this reform fits within it), see Major Landlord Tax Changes Coming in 2026.
What do the APR and BPR changes from April 2026 cost you?
If you own the farm or the business rather than advise on one, the APR and BPR cap comes down to one number and one rate. From 6 April 2026 you can pass up to £2,500,000 of qualifying farming or business value free of inheritance tax. That allowance is £2,500,000 for 2026/27, and it is one allowance covering farming and business value together, not one of each. Above it you keep relief at half the old rate, which works out as a 20% bill on the value above your allowance instead of the usual 40%.
So the question worth asking is not whether the cap applies to you. It is how far above £2,500,000 your qualifying value sits. If your farm, your trading business or your development stock is worth less than the allowance, your family's bill on that value is still nil. If it is worth £3,000,000, the £500,000 above the allowance costs you £100,000. If it is worth £4,500,000, the £2,000,000 above the allowance costs you £400,000. Twenty pence in the pound on the excess is the number to carry around, and you can size your own position with our BPR and APR allowance calculator.
Your allowance is not a once-in-a-lifetime figure: it refreshes on a rolling seven-year basis, so qualifying gifts you have already made in the last seven years use part of it up before your estate does. And if you hold AIM-listed shares, they now carry relief at 50% and sit outside the £2,500,000 altogether, so they neither use up your allowance nor benefit from it.
You farm and you let property: how does the cap treat each part?
This is the most common mixed position, and the answer is that your estate splits in two, with only one half ever touching the relief.
Say you own farmland and buildings worth £3,000,000 that qualify for relief, plus a residential rental portfolio worth £1,000,000 that never did. The farm side uses your allowance: the first £2,500,000 passes with no inheritance tax on it, and the remaining £500,000 gets relief at half rate, costing your family £100,000. The rental side is untouched by the reform, because letting homes has always counted as investment rather than trading, and investment property never qualified for the relief in the first place. It is taxed the way it always was, at 40% above your tax-free bands.
The practical consequence for you is that the rental portfolio cannot shelter under the farm's allowance. If your wealth is mostly rental property, this reform is not the thing to worry about, and your time is better spent on the gifting, ownership and life-cover routes. If your wealth is mostly farmland or trading value, the sizing exercise is worth doing this tax year rather than next. The wider picture for land-owning families sits on our landed estates page.
Are you married or in a civil partnership? Your combined position can reach £5 million
Read as one allowance per person, the cap sounds hard on a family farm. Read as a couple, it is more generous than much of the coverage suggests. Between you, the two of you can pass up to £5,000,000 of qualifying farming and business value at full relief, on top of the ordinary tax-free bands that cover the rest of your estate.
What you should not assume is that the £5,000,000 arrives by itself. It describes the best available outcome for a couple, not an automatic one, and how the allowance sits between the two of you turns on who owns what and on the order of the two deaths. If everything qualifying is in one name, that is the first thing to look at. If you have not revisited who owns which shares, which fields and which buildings since 2024, that review is the highest-value hour you will spend on this.
Did you give something away after October 2024? What that means for you now
If you gave away qualifying property on or after 30 October 2024, the old unlimited relief is not locked in for you. Where you die on or after 6 April 2026 and within seven years of that gift, the gift is reworked under the new rules, so value above your allowance is relieved at half rate rather than in full. Gifts you completed before 30 October 2024 sit outside all of this, however long you live.
Three things follow for you. Your gift still works, because surviving seven years takes the value out of your estate entirely. Your gift is not a guarantee, because dying inside seven years pulls it back into the sum at the new rate. And your timing matters more than your paperwork, because the seven-year clock runs from the date you made the gift, so a gift you are still thinking about is worth deciding on this year rather than next.
If you are not sure where you sit against the £2,500,000, start with the calculator. When the number worries you, ask us where you actually stand: your qualifying value today, the allowance your past gifts have already used, and the one ownership or gifting move worth making first.
