There are a number of key differences between the UK and the Australian schemes although both, and indeed all the schemes, are based on a scheme originally out of Canada.
Registration Requirements
There is currently no need to register in order to claim R&D relief in the UK. The claim is made as part of the company’s usual corporation tax return and must be filed within two years of the accounting period it relates to. HMRC has proposed draft legislation that, from 01 April 2023, companies will be required to notify of their intention to claim within 6 months of the period end. This notification will be made via an online form and companies that have made a claim within the preceding 3 periods will be exempt.
To claim R&D relief in Australia you must register for every year you wish to claim and you must be registered before claiming the R&D offset on the company’s tax return within 10 months of the accounting period.