Share sales

Share sales

In a share sale, ownership of the company owning the target business is transferred to the buyer. Unlike an asset sale, the target company retains its assets and continues to operate its business.

There are tax advantages and disadvantages of a share sale for both parties.

The tax consequences of a share sale are generally less complex for a seller than those triggered by an asset sale. From the buyer's perspective, a share purchase will transfer the company, complete with its tax history and its contingent and potentially unexpected tax liabilities and exposures. This should encourage a buyer to conduct a thorough due diligence exercise and any issues identified should be addressed by obtaining appropriate warranties and/or specific tax indemnities or, depending on the nature and quantum of the potential liability, be reflected in the transaction price.

For further details of some of the key tax considerations, advantages and disadvantages of structuring the sale of a business as a share sale, see Practice Note: Share sale or asset sale—tax considerations.

Deal type and structure

There are commonly three different types of share sale deal:

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Latest Tax News

Tax weekly highlights—19 March 2026

This week's edition of Tax weekly highlights includes: (1) the enactment of Finance Act 2026 on 18 March 2026, (2) HMRC launching a consultation on extending the Uncertain Tax Treatment regime, (3) News Analysis on the Court of Appeal’s decision in Muller UK and Ireland Group LLP that amortisation debits were correctly disallowed by HMRC, (4) News Analysis on the UT’s decision in Putney Power Limited on the issue of whether the appellants had begun to trade by the relevant date for EIS relief purposes, (5) new HMRC guidance on multinational top-up tax and domestic top-up tax reporting software, and (6) News Analysis on the FTT’s decision in Countrywide Partners Limited to uphold a penalty for failure to comply with a stop notice issued under the promoters of tax avoidance schemes (POTAS) rules.

Upper Tribunal denies EIS relief as trade not commenced (Putney Power and Piston Heating v HMRC)

Tax analysis: The Upper Tribunal (UT) has held that the First-tier Tax Tribunal (the FTT) made a material error of law in its approach to determining when a trade has ‘begun to be carried on’ by a company for the purposes of qualifying for Enterprise Investment Scheme (EIS) relief under section 179(2)(b) of the Income Tax Act 2007 (ITA 2007). The FTT had identified a set of principles by reference to factors which were of relevance in previous cases and applied those ‘legal’ principles to determine that neither Putney Power Limited (‘Putney’) nor Piston Hearing Services Ltd (‘Piston’) had begun to carry on a trade by the relevant date of 4 April 2018. The UT set aside the FTT’s decision on the basis that the FTT had sought to apply a principles-based test which did not exist as a matter of law. The proper approach requires a multi-factorial evaluation of all of the circumstances in the case at hand. The UT re-made the decision but ultimately reached the same conclusion as the FTT, dismissing the appeals of both Putney and Piston and holding that neither company had commenced trading by the relevant date. The decision is significant because it clarifies that there is no strict legal test for when a trade commences: the question remains highly fact sensitive and will be determined by reference to the particular facts and circumstances of each case. Written by Kate Ison (partner at Macfarlanes LLP) and Victoria Braid (associate at macfarlanes LLP).

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