Moving from Montana to Iowa: Residency, Taxes, and What to Prove

In Montana

Billings, Missoula, and Montana's regional hospital systems generate real but modest travel-nurse demand given the state's population. A nurse genuinely domiciled in Montana who takes Montana contracts is taxed as an ordinary resident. A nurse claiming a Montana tax home while working elsewhere needs a real, regularly used, duplicated-expense Montana residence, since Montana's facts-and-circumstances domicile standard applies the same evidentiary weight to a claimed tax home as it does to any other domicile dispute.

In Iowa

Iowa has no statutory carve-out for travel nurses distinct from its general domicile test; the federal tax-home question under IRS Publication 463 governs stipend treatment, and Iowa's domicile-continuity rule then applies independently. Iowa's major hospital systems in Des Moines, Cedar Rapids, and Iowa City draw a steady stream of travel nursing assignments, and this is also the specific fact pattern national travel-nurse forums warn about: nurses who claim a Florida or Texas tax home on paper while actually living in an Iowa rental apartment and rarely visiting the claimed home state have had their tax-home status disallowed, which exposes the tax-free stipends and typically requires filing an Iowa resident return alongside nonresident returns in every other state worked.

In Montana

Montana has no major professional franchise in the four big US leagues, so jock-tax exposure runs primarily one direction: Montana-domiciled athletes playing professionally elsewhere are taxed by those other states under their own apportionment rules, while nonresident athletes competing in occasional Montana events (college sports revenue aside) owe Montana tax on Montana-source income under standard nonresident sourcing.

In Iowa

Iowa has no major professional sports franchise, though the University of Iowa and Iowa State athletic programs generate significant visiting-team and visiting-official travel, and touring concerts and events at Des Moines and Cedar Rapids venues bring nonresident performers into the state regularly. Iowa applies duty-day apportionment to nonresident athletes and entertainers earning income from Iowa events, consistent with how most income-tax states administer the jock tax.

In Montana

Because Montana's permanent-place-of-abode test has no codified day-count threshold, a long-term visitor or second-home owner in a resort area like Whitefish, Big Sky, or the Flathead Valley cannot rely on staying under a specific number of days the way they could in a state with a 183-day rule; the Department instead weighs the full facts and circumstances of how the home is used and how much time is actually spent there. Montana's own domiciliaries who winter in Arizona or elsewhere remain presumed Montana residents under the 'residence cannot be lost until another is gained' rule unless they affirmatively establish a new domicile.

In Iowa

Because Iowa has no day-count statutory residency test, an Iowa snowbird who winters in Florida or Arizona does not face a bright-line day-count trigger the way a New York or Missouri resident with a similar arrangement would; the question is whether Iowa domicile has actually been abandoned and replaced, and Iowa's continuity rule means simply spending part of the year elsewhere does not by itself end Iowa residency. The Homestead Tax Credit is the practical tripwire: it requires the property be the claimant's primary residence, so a snowbird who spends the majority of the year in a warm-weather state should reassess whether continuing to claim it is still accurate.

In Montana

Montana has no convenience-of-employer rule: a nonresident performing all work physically outside Montana for a Montana-based employer is not Montana-taxed on those wages. Montana, particularly Bozeman, Missoula, and the Flathead Valley around Whitefish and Kalispell, has drawn a wave of remote workers relocating from higher-cost states since 2020, and the lack of a sales tax is a frequently cited draw alongside the income tax simplification.

In Iowa

Iowa has no convenience-of-the-employer rule, so a genuine Iowa resident working remotely for an out-of-state employer is taxed as an Iowa resident regardless of employer location, and a nonresident working remotely for an Iowa employer generally is not pulled into Iowa tax solely because the employer is headquartered there. The Quad Cities (Davenport/Bettendorf, Iowa and Rock Island/Moline, Illinois) and the Omaha-Council Bluffs metro both produce a meaningful population of cross-border remote and hybrid workers whose actual physical work location, not their employer's address, governs Iowa tax exposure.

In Montana

Montana follows the federal Servicemembers Civil Relief Act and Military Spouses Residency Relief Act. A service member stationed in Montana under orders (Malmstrom Air Force Base near Great Falls is the state's major installation) does not become Montana-domiciled from the posting alone. Montana's 2024 tax simplification added a subtraction for certain resident working military retirees and military survivor-benefit recipients, on top of the general federal SCRA/MSRRA protections.

In Iowa

Iowa follows the federal Servicemembers Civil Relief Act and Military Spouses Residency Relief Act. A servicemember whose home of record is Iowa remains an Iowa domiciliary and taxpayer regardless of duty station, and Iowa does not tax a nonresident servicemember's military pay solely because they are stationed in Iowa under orders. A nonmilitary spouse residing in Iowa solely due to military orders can elect the servicemember's state of legal residence under MSRRA for Iowa tax purposes.

In Montana

Montana's airports (Bozeman Yellowstone International being the busiest) are not major airline crew bases, so the more relevant federal carve-out for Montana residents working in transportation is the interstate rail and motor carrier employee rule: federal law limits taxation of such employees with regularly assigned duties in more than one state to their state of residence.

In Iowa

Federal law (49 U.S.C. §40116) limits any state's ability to tax an air carrier employee's pay to the employee's state of residence and any state where more than 50% of pay is earned. Iowa's airports are not major airline crew bases, so this carve-out is less frequently in play for Iowa specifically, but it still protects any Iowa-domiciled crew member from having their full income pulled into a duty-station state's tax.