A minimum tax is a bad idea. Taxes tend to creep up, and the main pressure against that is for companies or people to leave.
Has there been any serious research in this area that supports that conclusion. My impression, which is completely uninformed I admit, is that we often talk about companies leaving due to high tax burdens, but that it rarely happens. It's a politically signal, more than a factual systemic driver.
Sure, a bunch of companies have relocated to tax havens, but we're not going to solve that by regressing to a 2% universal tax rate.
Now presumably there are penalties or such in place for this type of agreement, so it would need to be weighed as onerous enough to accept any such penalties. If it is just one country that feels this way then it might be a non-starter, but if the global minimum tax gets to a point where many countries feel this way, it would probably be viable to coordinate to leave the agreement all at once, with the remainers having little power at that point.
Citation needed, corporate taxes have been going down for decades.
> companies or people to leave.
"We can't ever tax anyone because else they would just leave; ergo nothing can or should be done about rampant inequality" is not only false, it is extremely dangerous and accelerates the fall of our democracies.
Companies competing to make the best product is good.
Tiny nations stealing corporations domiciles by offering low tax rates hurts investment in first world economies, the kind we want everyone to have.
Without taxation, the infrastructures needed to maintain a healthy economy are unsustainable. We need to ensure that what companies benefit from public services is taken back so it can be reinvested.