Planning, sales and reliefs

As early as possible. Several reliefs look at a period before a sale, such as the two years for Business Asset Disposal Relief, and several clawbacks look at a period after the demerger, such as three years for SDLT relief. A demerger well ahead of a sale gives the most options and the least risk. Once a buyer is in view, choices narrow.

Yes. Many buyers want the trade but not the property or surplus investments. A demerger can separate those assets so the buyer acquires a cleaner trading company and the owners keep the rest. Whether it works tax efficiently depends on the route, the timing and how the sale is disclosed to HMRC.

The Substantial Shareholding Exemption can exempt a company's gain on selling a trading subsidiary if it has held at least 10% for a continuous 12 months in the six years before the sale and the company sold is trading. A demerger can change which company holds which subsidiary, so the holding period and trading status need checking against the planned sale.

Generally not for the shareholders' base cost and ownership, because the reorganisation reliefs treat new shares as the same asset as the old ones. Base cost is apportioned between the companies, broadly by market value at the time of a later disposal for unquoted shares. But some relief conditions are tested on the company sold, which may be new.

The normal rates are 18% within the basic rate band and 24% above it. Business Asset Disposal Relief gives 18% on up to £1m of lifetime qualifying gains for disposals from 6 April 2026, where the conditions are met for the two years before the sale. Whether the demerger has been tax neutral is a separate question from the tax on a later sale.

It can be. HMRC's guidance on the reconstruction anti-avoidance rule includes an example of a family group using a capital reduction demerger to separate a business sold to an Employee Ownership Trust, where the rule doesn't apply. EOT relief has changed: for disposals from 26 November 2025, 50% of the gain is chargeable at the time of sale.

Yes. A demerger can let different children take different businesses, or separate a property portfolio from a trade that one family member runs. It interacts with inheritance tax Business Relief, capital gains tax on gifts and, often, trusts. The order of the demerger and any gifts matters for the reliefs available.

For five years after an exempt distribution, certain payments by the companies to their shareholders, made without genuine commercial reasons or as part of tax avoidance, are taxed as income. These are chargeable payments. The rule doesn't ban a sale as such, but a sale planned at the time of the demerger can stop the distribution being exempt in the first place.

Yes, but how matters. Ordinary dividends are taxed as dividends. Other payments, such as share buybacks or transfers of value, can be caught by the chargeable payment rules after a statutory demerger, or the transactions in securities rules after any route. Planning extraction in advance, and considering clearance, avoids surprises.

It replaced the bona fide commercial reasons test in the capital gains anti-avoidance rules for share exchanges and reconstructions with a main purpose test, from 26 November 2025. HMRC accepts that deferral alone is not a tax advantage. The focus is now on any additional arrangements, such as loan notes or share rights, designed to reduce or avoid tax.

Yes. A buyer's due diligence will look at it, and will usually ask for the clearance applications and HMRC's responses, the implementation documents and evidence of stamp duty and SDLT relief claims. A well-documented demerger with clearance is reassuring. Gaps can lead to requests for indemnities or a price reduction.