Paschal Donohoe (Dublin Central, Fine Gael) | Oireachtas source

We will have it by 7 November 2023 at the latest because that is when owners will be required to provide self-assessment to Revenue. Given it is possible some self-assessment is likely to happen and returns may come in October 2023, it may be some time after that before we get the full picture. I imagine the window from November 2023 to early 2024 will be the period in which the full performance of the tax will become clear in terms of registration.