Illinois Residency

Yes, though it works alongside domicile rather than replacing it. Under 35 ILCS 5/1501(a)(20), someone not domiciled in Illinois still becomes a statutory resident taxed on worldwide income if they maintain a permanent place of abode in Illinois and are present more than 183 days in the tax year. Separately, 86 Ill. Adm. Code 100.3020 presumes someone present more than nine months is domiciled in Illinois. Spending exactly 183 days keeps a non-domiciliary a nonresident under the statutory test, but a long-term Illinois abode plus heavy time in the state raises both the day-count and the domicile question at once.

It depends on how much time you spend in Illinois and whether the condo still counts as a permanent place of abode. If you're present in Illinois more than 183 days in a year while the condo remains available to you, you become a statutory resident on worldwide income regardless of your Florida domicile claim. Even below that threshold, keeping the condo, especially if you still claim the General Homestead Exemption on it, is exactly the kind of fact Illinois auditors look for when a taxpayer claims to have left.

No. Illinois sources employee wages to where the work is physically performed, not to where the employer is headquartered. A nonresident who works remotely from another state for a Chicago-based employer generally is not taxed by Illinois on those wages, which is a meaningful difference from convenience-rule states like New York, and it means remote workers face less Illinois exposure after moving away than they might expect.

File Form IL-1040 together with Schedule NR, the Nonresident and Part-Year Resident Computation of Illinois Tax. Schedule NR splits your income between the period you were an Illinois resident, which is taxed in full, and the period after you became a nonresident, when only Illinois-source income is taxed. Skipping Schedule NR and simply filing as a full-year nonresident in your move year is a common and easily flagged mistake.

Illinois has reciprocity with Wisconsin, Iowa, Kentucky, and Michigan, so a Wisconsin resident working in Illinois generally does not owe Illinois tax on those wages and should not have Illinois tax withheld; instead, only Wisconsin taxes that income. If Illinois tax was withheld in error, you file for a refund from Illinois rather than claiming a credit, and you report the income on your Wisconsin return as usual.

Yes, it's a direct contradiction auditors specifically look for. The General Homestead Exemption requires the property to be your owner-occupied principal residence as of January 1, so continuing to receive it while filing as an Illinois nonresident and claiming Florida domicile undercuts your own position. If you've genuinely moved, removing the exemption is one of the concrete steps that supports your new domicile claim.

No. Illinois fully exempts qualified retirement income from state tax, including Social Security, pension payments, and qualifying distributions from 401(k)s, 403(b)s, 457(b)s, and IRAs, with no age requirement and no income cap. This is one of the more retirement-friendly features of Illinois tax law and is a genuine reason some retirees stay rather than chase a no-income-tax state.

Illinois uses a duty-day formula: the player's total season compensation is multiplied by the ratio of Illinois duty days, which include games, practices, and mandatory team functions, to total duty days for the season. A single game in Chicago against the Bulls, Bears, or another Illinois team creates Illinois-source income taxable on a nonresident basis, and Illinois is considered one of the more aggressively enforced jock-tax states.

Any part of a day spent physically present in Illinois counts as a full day toward the 183-day threshold, following the same approach used by other statutory-residency states. That means a same-day business trip into Chicago, a connecting flight through O'Hare with time spent off the plane, or a weekend visit to family all add to the count, which is why Illinois auditors lean on credit card, toll, and travel records to reconstruct actual days present.

No, Illinois does not have a separate exit tax. What it does have is ordinary income tax on Illinois-source income earned up to and after your departure, computed on Schedule NR for the year you leave, plus continued taxation of any Illinois-source income, like gain on Illinois real estate or income from an Illinois business, that arises after you've become a nonresident. The estate tax, with its unindexed $4 million exemption, is a separate and increasingly relevant consideration for wealthier residents regardless of whether they leave.

A servicemember posted to Illinois on military orders, and their spouse under the Military Spouses Residency Relief Act, does not become an Illinois resident solely because of the duty station, and the servicemember's military pay is not treated as Illinois-source income for a nonresident. Someone whose home of record was Illinois before enlisting remains an Illinois domiciliary unless they take affirmative steps, like establishing a new domicile in another state, to change it.