A global tax of 15% should be required to be considered for business as an equal.
How about a zero tax?
Then everyone should be indeed equal and nobody would have to spend millions of in searching for millions in tax evasion.
As I said before, businesses and corporations are not poeple, they don't spend millions on mansions, cars, and hookers, cut any deductible expense that could be used by the employees as a backdoor, and set the tax to null. All the money they will be getting in paychecks from the company be it wages, dividends anything will sure be taxed when it comes to their personal income tax. So why fracture this in 100 steps and make it both overcomplicated and easy to avoid when the results will be the same in the end.
Anyhow, that money hidden in tax havens will still be used sooner or later, they will return to the economy, they will be spent, and then taxed, at least with VAT.
Certainly, far from everyone being equal, equality and redistribution would be flushed down the toilet.
Corporations are not people, just a legal construct, but the owners are people - unless the AIs have already taken over and we have not noticed yet. Taxing a corporation means taxing the owners on regards of their benefit because they benefit greatly from states - more than most in fact. They get infrastructures of all shorts, a system that educates people so they can have workers, a legal system that protects their right to intellectual property and defends their interests internationally. It is obvious that you cannot take without giving back.
How about not having the means to defend your country from an invasion? How about not having a legal system that supports your right to individual property? How about having a mass of people that cannot afford basic education? How about not having means to respond to an emergency?
As said many times before, if you do not pay taxes, you will not have anyone to defend your right to property, the borders of your country... So, unless you have a marvellous theory on how can you get from a world divided into states to a world without them, you do need taxes.
RE your idea about returning sooner or later, I encourage you to familiarise yourself with the reason why accounts are closed yearly and taxes are paid every year. As a hint, it is not the same to pay today than to pay in 10 years.
Honestly, I find your arguments far too ideologically biased and with little real foundations.