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State tax filing
The Utah tax form (TC-40) starts with federal income because of the way Utah calculates tax on part-year residents. However you are not being tax on federal income; only the UT percentage.
Utah first calculates a base tax rate as if all your income were earned in Utah. Your actual tax is the Utah income percentage of the base tax. For example, if you earned $159,915 total and $73,300 in UT, your Utah tax would be the UT tax on $159,915 x ($73,300/$159,915),
The tax computation is shown on Form TC-40B.
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‎April 5, 2021
11:50 AM