Lower taxes to give people more cash to spend.
Raise taxes to get people to stop doing something. For example tax bank income higher if the credit card rates are over 10% and even highter if over credit card 15%. This will change the behavior of the lenders.
Riae the cost of borrowing money fromthe Federal Resever to slow down spending or lower it to increae spending/borrowing. (Fed Monetary Policy).
Place excise taxes or tariffs on goods imported fro over seas. Give areas exemption form taxes to encourge expanison of factores or production.
Cities waive prperty taxes so a company will move there. The city gets income tax from workers and assocated increase in related businesses.
Tax social security of the wealthy.