Ideas Of Exchange: Tightened Anti-avoidance Tests On Share-for-share Exchanges

Amendments included in the Finance Bill 2025-26, which is currently proceeding through Parliament, expand the anti-avoidance rules relating to share-for-share exchanges and other corporate reorganisations. The government is seeking to tighten the availability of tax-neutral treatment of transactions in which shares are issued as consideration or as part of certain reorganisations. The changes have been introduced in response to two 2023 decisions, in which the courts rejected HMRC's contention that anti-avoidance rules applied to structures with a clear tax planning element. The changes took effect from the date of the Autumn Budget 2025 and will affect current and pending transactions.