For tax years beginning on or after January 1, 2019 and before January 1, 2020, Iowa conforms with the federal Internal Revenue Code in effect on March 24, 2018
Guidance related to Public Law 116-94 and Division Q of that Act which extends several federal tax provisions, many retroactively to tax years 2018 and 2019.
Iowa and Illinois have a reciprocal agreement for individual income tax purposes. At this time, Iowa's only income tax reciprocal agreement is with Illinois.