The cities do have taxing authorities under the state statutes like other cities.. Special Sale taxes, property taxes, etc. There are taxes that require enablement by law, and there are others they are allowed without explicit grants under general law. 67-1104 for instance for Bay Lake specifically enables them to issue bonds, collect ad valorem taxes, business taxes, etc. They can generate revenue... now dealing with the bond garuntees/transfers/etc is another ball of wax... but that's part of any transition plan anyway.