Legislative.
Tax Bill
which house starts all revenue bills <><><> House of Representatives.
The branch which can tax is the Legislative Branch. This branch includes the House of Representatives and the U.S. Senate.
The US Tax Courts are part of the Legislative Branch of government, but support the IRS and the Department of the Treasury, which are part of the Executive Branch of government.
You can challenge an old tax bill by appealing against it.
The Executive Branch enforces the laws which includes the tax laws. The IRS is a government agency headed by the Executive Branch. The Legislative branch creates the tax laws.
The legislative branch has the power to tax, however only the House of Representatives can introduce tax legislature, and it still requires senate approval.
All tax bills must start in the House of Representatives and the bills raise income
The tax cut bill of 1964 lowered the income tax rate to 50 percent down from 90 percent. As a result businesses saw significant growth.
The Executive Branch (The President) has the authority to veto a bill. However, if the Legislative branch gets a 2/3 majority behind a bill, the veto can be overruled.
The Judicial Branch