Income tax in the United States dates. Some states permit related corporations to file combined or consolidated returns. Most states and localities imposing income tax require estimated payments where tax exceeds certain thresholds, and require withholding tax on payment of wages. Puerto Rico is treated as a separate taxing entity from the USA; its income tax rates are set independently, and only some residents there pay federal income taxes (though everyone must pay all other federal taxes). The unincorporated territories Guam, American Samoa, and the Virgin Islands also impose income tax separately, under a "mirror" tax law based on federal income tax law. Proposals have been
Citizens for Tax Justice Citizens for Tax Justice Citizens for Tax Justice is a Washington, D.C.-based think tank and advocacy group founded in 1979 focusing on tax policies and their impact. CTJ's work focuses primarily on federal tax policy, but also analyzes state and local tax policies. Its stated mission is to "give ordinary people a greater voice in the development of tax laws." CTJ's goals include: "fair taxes for middle and low-income families; requiring the wealthy to pay their fair share; closing corporate tax loopholes; adequately funding important government services; reducing the federal debt; [and promoting] taxation that minimizes distortion of economic markets."