@dw31583 do know via via some people to talk to about this to who specialise in wealth management, corporate structures, property, they know everything about your situation and have experience with Malta, Middle East, Americas, Asia. There are basically two approaches, you pay your dues in your residency country -or- you base yourself somewhere and live a very transitional life which does not mean what most think it does.
Everything in between is grey and as you can see from Apple today, the governments are getting desperate with retroactive judgements, always the start of the end but they don't care. Can tell you almost everything advised will be theory from wikipedia and textbooks, there are very few who have actually done it in practice -without- cutting corners or taking -massive- risks often where the end party has no clue what is going on.
Can answer your specific question on #672 as was passed this information via via, your place of business will in most cases be the non-MT country. There is -no- 100% anyone can give you, if they do they are lying, even the accountants have no clue how the tax codes work and they make sure when it goes wrong they get their fees and run for cover.
What you need is the highest percentage option and a mitigation option if that goes wrong, because the powers can still 'interpret' whatever they want out of something when it's 100% best practice, navigating that requires experience. You only have to look at the avoidance drama unfolding, if the governments don't like it plug the holes in the code, but they won't do that because that complexity allows 'interpretation' to increase take. So the rational choice, go to somewhere that respects your money and the effort you put in to make it. Ultimately it is choosing a jurisdiction that supports your business and personal interests for growth, it's not about lowering rates although that may be a side effect of those choices.
Note: whoever said about forfait in CH has absolutely no clue what they are talking about, you basically have to be a 'retired' multi-millionaire to apply for it and the top cantons you need to be an F1 driver or tennis pro. If you can prove you are retired which someone did at 30, then it can work, but for the other 99.99% being in a situation to integrate with this type of structure is a fictitious fantasy.