Keep in mind you're talking about a local municipality which is going to receive a large chunk of its revenue from property taxes, fees, sales tax etc. From https://www.ibo.nyc.ny.us/iboreports/understandingthebudget....
The breakdown is:
29% Property Tax
17% State Grants
13% Personal Income Tax
10% Federal Grants
8% General Sales Tax
8% Fees and Fines (Non-Tax)
7% Business Income Tax
4% RE Taxes
4% Other Taxes
Some of these will hit the wealthy more than others (eg: Biz and Personal Income Taxes) but revenues aren't going to drop by 71-72%. I know in America taxes are super taboo but there's also nothing wrong with raising taxes on the rest of the city to cover any gap.From (biased but presumably factual): https://www.empirecenter.org/publications/nycs-high-income-t...
Edit: just trying to add info, not bias the conversation! Maybe also relevant: https://www.visualcapitalist.com/3d-map-the-u-s-cities-with-...
And if I'm not mistaken, the city still gets that money as long as the job is located there anyways.
It also stands to reason that other tax receipts will go down if people move away e.g. rents go down -> propery values assessed downwards -> taxes decrease.
Edit: the pothole was supposed to be a metaphor for something the city does but could do a lot less of without people actually being badly affected.
When money like that is available to a city, you end up with infrastructure projects of the scale NYC has, the ability to tell your state "thanks but no thanks", Oh, and police departments with intelligence units that outstrip the capabilities of the intelligence apparatus in most Asian and South American nations.
The average american has no frame of reference for the kind of wealth at the disposal of NYC. I say, let them fix all the potholes. Regular people may as well get something out of it.
Raising taxes does not necessarily increase tax revenue. Is the last guy on the sinking ship going to pick up the tab for everyone?
It actually looks even worse in Europe - not only is the continent hugely economically diverse in development and in governance structure (some are much less or more corrupt and more or less democratic than others) but the free movement and free trade has functionally taken every nations economic sovereignty. Its the only point on which I can agree with Brexiteers on because the EU is much less democratic an institution than a lot of its constituent national governments are.
Ultimately final power comes down to the purse. The EU uses the Euro to control economic policy across the continent, the US Federal Reserve uses the USD to control the US economy. There is nothing you can do as any regional or local power to oppose the will of those higher institutions. Especially if you work in the peoples interests, because then you have the joint problem of attracting the poor and downtrodden because you are trying to uplift your working class while losing the favor of the capital you would depend on to generate the revenues to afford anything.
Its by design, to be fair.
After some digging, I realized that just 10% of the population pays about 71-72% of the taxes.
If half of that 10% of the population leaves, the city will have 1/3rd less tax revenue (it will have less than 65% of the current revenue). Also, the city will be limited on what it can tax, as if it raises the taxes more, even more people will leave for low tax states and turn it into a death spiral. The only way to get out of the situation is to have help federally.
Meanwhile it will have to cut services drastically.... from trash collection, social services, schools, etc... Apart from the slow trash decay, I think the first shock from some of the folks will be when MTA is forced to raise fares to $4 or $5 (now it is $2.75).
As for those 'let the gentrifiers leave' populist folks, Sure, rents will go down by 15-20% but a lot of the folks will be jobless soon, and manny other things will get more expensive.