(Updated July 17, 2020)
This guidance has been substantially updated to reflect changes in the law that occurred after it was originally published.
For tax years beginning on or after January 1, 2019, and before January 1, 2020, Iowa conforms with the federal Internal Revenue Code (IRC) in effect on March 24, 2018. For tax years beginning on or after January 1, 2020, Iowa has adopted rolling conformity with the IRC. Iowa did not conform with many of these changes for tax year 2018. See the 2018 Iowa Nonconformity Adjustments Worksheet for information about how to make the necessary adjustments for GILTI, FDII, and other Tax Cuts and Jobs Act (TCJA) items for tax year 2018.
If you have questions or comments on this guidance, please submit them through our Request for Tax Guidance.