Idaho updates withholding tables guide; new Form ID W-4
Tuesday, January 15, 2019

Idaho updates withholding tables guide; new Form ID W-4

By Payroll and Entitlements Editorial Staff

Idaho has updated its withholding tables guide. The changes include a new Form ID W-4 as an appendix. The tax commission also corrected instructions in the guide that had advised employees to enter their Idaho withholding allowances on the federal Form W-4. The 2018 W-4 Worksheet for Idaho was added as an appendix. Employees should use the worksheet to estimate their Idaho allowances and any extra state withholding. We recommend all employees update their W-4s using the worksheet. In the Percentage Computation Method instructions on page 20, the employer’s requirement to “add 2” for the single filing status with one or more withholding allowances was eliminated. In addition, the single tables for the Wage Bracket Method starting on page 26 were revised. All of the tables will be reproduced in the Payroll Guide at ¶5878 and ¶5879 in a future release. (Idaho State Tax Commission, A Guide to Idaho Income Tax Withholding, EPB00006 01-07-2019;

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