Income taxes are levied by the legislature.
Sounds like a description of levies, or taxes.
which U.S. Treasury bureau assesses and collects taxes on business and personal income
It depends on what "government" you are asking about. In the United States of America, the Federal government and most states levy and collect income taxes. So do many cities.In the Federal Government, income taxes are levied and collected by the Internal Revenue Service, which is part of the Treasury Department. The Treasury department is part of the Executive Branch, and is reports to the President.
The government does not earn any money, the income it has derives from the taxes it collects.It collects that money in taxes to pay for social requirements. Health, infrastructure, defence etc.
revenue
The IRS (Internal Revenue Service) assesses and collects taxes on business and personal income.
revenue
revenue.
Internal Revenue Services or IRS
so that the government can pay bills as they come due
The IRS collects taxes for the Federal Government. The basis for this is 16th ammendment of the constitution which allows the Federal government to levy income taxes. This is implemented via the tax code with is subjected to frequent revision by congress.