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
Working Party on the Reorganisation of the Income Tax Act 1976 Following on from these reports the government in 1995 established a review process for rewriting the income tax legislation, overseen by an advisory panel drawn from the private and public sectors. The Income Tax Act has since been largely rewritten in a plain English style with a radically re-organised structure, including a unique (for New Zealand) alpha-numeric section referencing system (as opposed to the more usual numeric system. It was re-enacted as the Income Tax Act 1994 and again as the Income Tax Act 2007 as the various parts of the legislation was progressively rewritten. The Rewrite Advisory Panel was