can be found on the Pennsylvania Municipal Statistics website) Philadelphia (earned and passive income; income must be reported to the City of Philadelphia if Philadelphia tax is not withheld by employer; residents must file the Earnings tax form to report wages on which Philadelphia income tax is not withheld, the Net Profits tax form to report self-employment, business, and most rental income, and the School Income tax to report passive income excluding interest earned from checking and savings accounts; an additional Business Income and Receipts Tax is also imposed on business income sourced from Philadelphia; individuals earning less than amount that would qualify them for the Pennsylvania income tax forgiveness program are eligible to receive a partial refund of their wage tax withheld by filing a refund application) West Virginia: Some municipalities, including Charleston and Huntington (flat City Service fee for privilege of working or conducting business; filed with municipality imposing fee) Corporate income tax Most states impose a tax on income of corporations having sufficient connection ("nexus") with the state. Such taxes apply to U.S. and foreign corporations, and are not subject to tax treaties. Such tax is generally based on business income of the corporation apportioned to the state plus nonbusiness income only of resident corporations. Most state corporate income taxes are imposed at a flat rate and have a minimum amount of tax. Business taxable income in most states is defined, at least in part, by reference to federal taxable income. According to taxfoundation.org, these states have no state corporate income tax as of Feb 1, 2020: Nevada, Ohio, South Dakota, Texas, Washington, and Wyoming. However, Nevada, Ohio, and Washington impose a gross receipts tax while Texas has a franchise tax based on "taxable margin", generally defined as sales less either cost of goods sold less compensation, with complete exemption (no tax owed) for less than $1MM in annual earnings and gradually increasing to a maximum tax of 1% based on net revenue, where net revenue can be calculated in the most advantageous of four different ways. Nexus States are not permitted to tax income of a corporation unless four tests are met under Complete Auto Transit, Inc. v. Brady: There must be a "substantial nexus" (connection) between the taxpayer's activities and the state, The tax must not discriminate against interstate commerce, The tax must be fairly apportioned, and There must be a fair relationship to services