I have been evaluated for tax purposes under the current finance bill, which has effect, even though it is not finalised, ie. it has not gone all the way through Parliament.
My situation is sensitive to some of the finer points (it has already changed twice during the drafting of the bill). Now if some of these change on the way to royal assent, what is customary, would it have retroactive effect or would the changes have effect from the date they were decided during the stages of the law passing through Parliament..?
Or does this completely depend on how the amendments are phrased?