In Budget 2021 the Chancellor announced changes to the corporate tax loss rules for group, some with retrospective effect.

These changes take effect for accounting periods beginning on or after 1 April 2021 unless overwise flagged. 

The changes have been made to ease the administrative burden as well as some technical changes to make legislation work as intended by:  

Useful guides on this topic

Groups: At a glance
What qualifies as a group for tax? How do you form a group? Which definition of a group applies for different types of tax? How does group relief work?

Losses: Trading and other losses
When can a company offset its losses? What restrictions are there? How are loss claims made?

External links

HMRC: Changes to the reform of loss relief rules for Corporate Tax

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