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FAQ: Alaska Corporation Income Tax (Visit this siteExternal Link to FAQ: Alaska Corporation Income Tax)

Alaska levies a corporate income tax on Alaska taxable income which is based on federal taxable income with certain Alaska adjustments.

Multistate corporations apportion income on a water's edge basis using the standard apportionment formula of property, payroll and sales. Oil and gas corporations use a modified apportionment formula applied to worldwide income.

Tax rates are graduated from 1% to 9.4% in increments of $10,000 of taxable income. The 9.4% maximum rate applies to taxable income of $90,000 and over.

Tax payment is due two and one half months from the close of the tax year. The payment due date cannot be extended. When an estimated payment is $100,000 or greater, or a payment with a return is $150,000 or greater, payment must be made online (TOPS) or by wire transfer. Tax returns are due three and one-half months after the close of the tax year.

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Added: Tue Jan 01 2002
Last Modified: Tue Jan 08 2008

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