http://en.wikipedia.org/wiki/Federal_income_tax
The Internal Revenue Code (title 26 of the United States Code) lists taxes and "fees" such as:
Accounts receivable tax
Alternative Minimum Tax (AMT)
Building permit tax
Capital gains tax
CDL license tax
Cigarette tax
Corporate income tax
Court fines (indirect taxes)
Dog license tax
Excise tax
Federal income tax
Federal unemployment tax (FUTA)
FICA tax
Fishing license tax
Food license tax
Fuel permit tax
Gasoline tax (42 cents per gallon)
Gift tax
Hunting license tax
Inheritance tax interest expense (tax on the money)
Inventory tax IRS interest charges (tax on top of tax)
IRS penalties (tax on top of tax)
Liquor tax
Local income tax
Luxury taxes
Marriage license tax
Medicare tax
Property tax
Real estate tax
Recreational vehicle tax
Road toll booth taxes
Road usage taxes (Truckers)
Sales tax and equivalent use tax
School tax
Septic permit tax
Service charge taxes
Additional Details
Social Security tax
State income tax
State unemployment tax (SUTA)
Telephone federal excise tax
Telephone federal, state and local surcharge taxes
Telephone federal universal service fee tax
Telephone minimum usage surcharge tax
Telephone recurring and non-recurring charges tax
Telephone state and local tax
Telephone usage charge tax
Toll bridge taxes
Toll tunnel taxes
Traffic fines (indirect taxation)
Trailer registration tax
Transfer tax and Generation-skipping transfer tax
Utility taxes
Vehicle license registration tax
Vehicle sales tax
Watercraft registration tax
Well permit tax
Workers compensation tax