Though the phrase "financial hub" is much more widespread (according to a Google search), I have seen "finance hub" as well on news sites. Does the second have a different meaning?
Learn English – What’s the difference between “finance hub” and “financial hub”
financemeaning
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Best Answer
The first uses the adjective financial as an adjective (as one would expect, I suppose).
The second uses the noun finance as an adjective.
You're allowed to use nouns in this way, but it is not as commonly done in cases where there is a well-known simple adjective, so we would expect the first to be more common, and it would probably be the better to go for, if you are choosing between using the two.
That said, business-y types seem to have a particular fondness for noun adjuncts. I think they've got the impression that they're more punchy or something. (If so, they are, IMO, wrong, but there's no accounting for taste).