Business Relief, Agricultural Relief and Succession Planning

Inheritance tax is charged at 40% on the value of an estate above the available nil-rate band, which is £325,000 per person. Business Relief and Agricultural Relief are reliefs that reduce the taxable value of certain assets before that 40% is applied. Historically, qualifying assets attracted relief at either 100% or 50%, and where 100% applied the asset effectively passed without any inheritance tax at all.

Business Relief covers trading businesses and interests in them: a sole trade, a partnership share, or unquoted shares in a trading company. Agricultural Relief covers the agricultural value of farmland, farm buildings, and farmhouses occupied for the purposes of agriculture. The two reliefs overlap in practice on many family farms, where the land may attract APR and the wider farming business may attract BR, and getting the interaction right has always needed specialist input.

The purpose behind both reliefs is the same: to stop a family being forced to break up or sell a working business or farm simply to pay the inheritance tax due when the owner dies. That purpose has not disappeared, but the scope of the protection is narrowing sharply from April 2026.

Qualifying for relief is not automatic. Business Relief applies to genuinely trading businesses and to unquoted shares in trading companies. The asset generally must have been owned for at least two years before death, a point covered in more detail below. Agricultural Relief applies to the agricultural value of land and buildings in agricultural use, and the occupation and ownership conditions differ depending on whether the owner farms the land themselves or lets it to a tenant.

The most common reason relief is denied is that the business is wholly or mainly an investment business rather than a trading one. A company or partnership whose activity is mainly holding investments, letting property, or dealing in land or shares does not qualify for Business Relief. A buy-to-let property portfolio, for example, is an investment business and falls outside BR however it is structured.

Two further traps reduce relief even where the business itself qualifies. Excepted assets, meaning assets held within the business that are not used for its trade, are stripped out before relief is calculated. Large cash balances held well beyond the working needs of the business are a frequent example, because surplus cash can be treated as an excepted asset rather than a trading one. A specialist accountant will look at the balance sheet, not just the trading status, when assessing how much relief a business will actually attract.

To attract Business Relief, the business or the unquoted shares must generally have been owned for at least two years before the date of death. The rule exists to stop assets being converted into relief-qualifying form shortly before death purely to avoid inheritance tax. Shares bought, or a business acquired, within two years of death will usually fall outside the relief.

There are nuances. Where one qualifying business asset replaces another, the ownership periods can sometimes be aggregated, and inherited assets can in some circumstances carry forward an earlier ownership period. These are exactly the points where a generic answer is dangerous, because the outcome turns on the specific history of how and when the asset was acquired.

The practical consequence is that succession planning involving Business Relief works best when it starts years, not months, ahead. Anyone hoping to bring an asset within relief, or to restructure a business before passing it on, needs the two-year clock to have run before the relief is tested.

From 6 April 2026, the 100% rate of Business Relief and Agricultural Relief is capped at a combined £1,000,000 per person. Qualifying assets up to that £1,000,000 continue to attract 100% relief. Qualifying value above the £1,000,000 cap attracts relief at 50% instead, which means the remaining half is exposed to inheritance tax at 40%.

The cap is combined across both reliefs, so a single £1,000,000 allowance covers the qualifying business value and the agricultural value together rather than each having its own separate cap. It also applies per person, which is the single most important feature for planning, because a married couple or civil partners may between them have two allowances to use.

The effect on larger estates is a real and new inheritance tax charge on succession. Consider, as a hypothetical illustration only, a farm with qualifying value of £3,000,000 in a single person's estate. The first £1,000,000 attracts 100% relief. The remaining £2,000,000 attracts 50% relief, leaving £1,000,000 chargeable. At 40%, that is a £400,000 inheritance tax bill arising on a business that previously could have passed with none. The figures in any real case depend entirely on the specific estate, which is why modelling matters.

Where the cap produces an inheritance tax charge, the concern for most families is liquidity. A farm or trading company may be worth a great deal on paper while generating very little spare cash, so finding a six-figure tax bill can mean selling land, selling shares, or breaking up the very business the reliefs were meant to protect.

The tax legislation offers some relief from the timing pressure. Inheritance tax attributable to qualifying business assets and land can often be paid in ten equal annual instalments rather than in a single payment, which spreads the cost across a decade. Interest may be charged on the outstanding balance in some circumstances, and the instalment option can be lost if the asset is sold, so it is not a complete answer on its own.

Used alongside the instalment option, life cover is one of the most common ways families plan to fund the bill. A policy written in trust, so that the proceeds fall outside the estate, can provide the cash to settle the inheritance tax without the next generation having to sell any part of the business or farm. Whether that is suitable, and how a policy should be arranged, is a question we work through with you.

The most powerful response to the cap is also the simplest: making sure both spouses' allowances are used. Because the £1,000,000 cap is per person, a couple who hold and pass qualifying assets so that each uses their own allowance can shelter up to £2,000,000 of qualifying value at 100% relief between them. Estates structured so that everything passes through one person can waste a whole allowance.

Lifetime transfers of shares or business interests are a second avenue. Giving away qualifying assets during life can move value out of the estate, and such gifts interact with the seven-year rule that governs lifetime giving generally. Restructuring a business to separate trading from investment activity, or to align ownership with the available allowances, is a third. Each of these carries its own tax consequences and its own timing requirements, and none should be attempted without specialist modelling of the whole position.

What ties these responses together is time. The two-year ownership rule, the seven-year rule on lifetime gifts, and the lead time needed to restructure cleanly all mean that the families with the most room to plan are the ones who start early. That is the reason this has become time-sensitive: the cap takes effect from 6 April 2026, and many of the most effective steps need to be in place well before a succession event rather than scrambled together afterwards.

Business Relief and Agricultural Relief never sit on their own. The cap interacts with the nil-rate band, with lifetime gifting, with the way assets are held in trust, and with how the will is drafted. A plan that secures relief but leaves the will pointing the assets through the wrong person can still waste an allowance, and a plan built around lifetime gifts has to respect the seven-year rule on lifetime gifting.

If you are starting from the beginning, our complete guide to UK inheritance tax sets out the nil-rate band, the 40% rate, and how the whole charge is built up. From there, the way assets are held matters: trusts in estate planning and wills and estate structuring both bear directly on whether two allowances are used or one is lost. And when a succession event does happen, our probate and estate administration guide covers how the reliefs are claimed and how an instalment election is made in practice.

None of this replaces advice tailored to your own estate. We model your business or farm against the new cap, quantify the likely charge, and set out the options.