Help with econ-macro assignment

Hello Brilliant i need help with Econ-Macro . My assingment is due 11/3/16 no later than 1000 am. I need a discussion question answer, not essay persay. the question below is what my professor wants for me to answer and a cited references. Would you be able to help? Thank you 

Identify the one tax governments use to fund the public sector and the impact of that tax on both the producer and the consumer. The IRS is pictured on the main page, but there are many types of taxes and most do not go to the IRS, including state and local taxes Please include in your discussion a description of the tax, its effect regarding it being progressive, regressive or neutral. These are the positive elements, but be careful to also describe your normative position.