Residency Migration Reference
Moving from Illinois to Michigan: Residency, Taxes, and What to Prove
The top income tax rate drops from 4.95% (flat) in Illinois to 4.25% (flat) in Michigan. Establishing Michigan residency correctly is what protects that benefit.
Residency Tests Side by Side
Illinois does not use a simple day-count threshold; it applies a facts-and-circumstances test instead. Michigan's statutory residency test uses a 183-day threshold.
| Factor | Illinois | Michigan |
|---|---|---|
| Statutory Residency Test | Illinois has no statutory residency test of the New York or Minnesota type: no bright-line day count and no permanent place of abode prong. 35 ILCS 5/1501(a)(20)(A) defines a resident as an individual '(i) who is in this State for other than a temporary or transitory purpose during the taxable year; or (ii) who is domiciled in this State but is absent from the State for a temporary or transitory purpose during the taxable year.' Those are the only two routes to Illinois residency for an individual. Cain v. Hamer, 2012 IL App (1st) 112833, shows how far that departure from a day count runs: snowbird retirees who spent 1,666 days in Illinois against 1,700 in Florida across 1996 through 2004, an average well above 183 Illinois days a year, were held not to be Illinois residents. Day counts matter in Illinois as evidence of purpose and as inputs to the administrative presumptions, not as a threshold that decides residency by itself. | MCL 206.18 defines a resident as an individual domiciled in Michigan. The statute then provides a deeming rule: an individual who lives in Michigan at least 183 days during the tax year, or more than half the days of a taxable year shorter than 12 months, is deemed a resident individual domiciled in Michigan for that year, regardless of where they claim their true domicile to be. |
| Domicile Test | Illinois follows the traditional common-law domicile standard under 86 Ill. Adm. Code 100.3020: domicile is the place a person intends as their true, fixed, permanent home, and to which they intend to return whenever absent. A person can have only one domicile at a time, and it continues until a new one is established through both physical presence in the new location and demonstrated intent to abandon Illinois as the permanent home. The Department of Revenue looks at where a person votes, holds a driver's license and registers vehicles, banks, keeps professional relationships (doctor, lawyer, accountant), works, houses family, and belongs to clubs or religious institutions; no single factor controls. | Michigan defines domicile, under Mich. Admin. Code R. 206.5, as the fixed, permanent, and principal home to which a person, wherever temporarily located, always intends to return. Treasury weighs where a person keeps their most important possessions, houses their family, votes, holds club and lodge memberships, registers vehicles, maintains a mailing address, banks, operates a business, or files for divorce. No single factor is dispositive, but the regulation specifically flags one factor as very significant: the failure of a person to pay income tax in the state where they claim their new domicile is located. |
| Day Count Threshold | No fixed threshold | 183 days |
| Any Part of a Day Rule | Not applicable in the statutory sense, because Illinois has no day-count threshold for an individual to cross. There is no any-part-of-a-day rule to apply. Days still get counted in Illinois practice, both because 86 Ill. Adm. Code 100.3020(f) presumes residency above nine months in the aggregate and presumes continued residency where an individual is present in Illinois more days than in any other state, and because the Department of Revenue's audit division reconstructs presence from credit card, toll, and travel records to test whether time in Illinois was temporary or transitory. | Michigan's statute and administrative guidance count days lived in the state toward the 183-day threshold without a published carve-out for partial days, and practitioners describe Treasury's audit approach as reconstructing actual days present from travel, financial, and utility records once a residency question is raised. |
| Presumptions | 86 Ill. Adm. Code 100.3020(f) supplies four rebuttable presumptions in place of a statutory day test. An individual who spends in the aggregate more than nine months of any taxable year in Illinois is presumed to be a resident. An individual absent from Illinois for one year or more is presumed to be a nonresident. An individual receiving a homestead exemption on Illinois property under 35 ILCS 200/15-175 is presumed to be an Illinois resident. And an Illinois resident in one year is presumed to be a resident the following year 'if he or she is present in Illinois more days than he or she is present in any other state.' The presumptions 'are not conclusive and may be overcome by clear and convincing evidence to the contrary,' with the rule listing acceptable rebuttal evidence including location of spouse and dependents, voter and vehicle registration, driver's license, filing a resident return elsewhere, home ownership or rental agreements, the permanent or temporary nature of work assignments, location of professional licenses, location of medical providers, accountants and attorneys, club memberships and participation, and telephone or other utility usage over a duration of time. | The 183-day rule itself functions as an irrebuttable statutory deeming provision, not merely a rebuttable presumption: MCL 206.18 states a person who meets the day count 'shall be deemed a resident individual domiciled in this state,' which is a stronger statutory hook than a pure facts-and-circumstances presumption. |
| Safe Harbors | None published | None published |
Leaving Illinois
Illinois is not in the top tier of aggressive exit-audit states the way New York or California are, but the Department of Revenue does examine departing high earners, especially where a large capital gain or business sale occurred near the claimed move date, or where the taxpayer kept an Illinois home, spouse, or business presence after claiming nonresidency. Auditors reconstruct day counts using credit card statements, toll records, airline records, and utility usage, and they cross-check the General Homestead Exemption against a claimed out-of-state domicile.
Trailing Income
Illinois does not have a convenience-of-the-employer rule, so a former resident who telecommutes for an Illinois employer from another state generally is not taxed by Illinois on those wages solely because the employer is based in Illinois; sourcing follows where the work is actually performed. Illinois does tax nonresident income that is Illinois-source, including compensation for services actually performed in Illinois, gain on the sale of Illinois real property, and a departing resident's share of Illinois business income allocated under the state's apportionment rules for the period they were still a resident or doing business in the state.
Part-Year Filing
Form IL-1040 together with Schedule NR, Nonresident and Part-Year Resident Computation of Illinois Tax, is used for the year someone moves into or out of Illinois. Schedule NR allocates income between the Illinois-resident portion of the year and the nonresident portion, and computes an Illinois tax based only on Illinois-source and Illinois-period income.
Enforcement Methods
Common Exit Mistakes
Establishing Michigan Residency
| Action | Agency | Deadline |
|---|---|---|
| Obtain a Michigan driver's license | Michigan Secretary of State | as soon as residency is established; Michigan law provides no grace period |
| Register any vehicle kept in Michigan | Michigan Secretary of State | within 30 days of establishing residency for standard registration; certain commercial transfers follow MCL 257.301 |
| Register to vote | Michigan Department of State, Bureau of Elections | online and mail registration close 15 days before an election; in-person registration, including same-day registration, remains available through Election Day at the local clerk's office |
Declaration of Domicile
Michigan has no county-level declaration-of-domicile filing like Florida. Domicile is established through conduct assessed under Mich. Admin. Code R. 206.5: buying or leasing a home, obtaining the Michigan license and plates, registering to vote, filing a Michigan return as a resident, and shifting where family, business, and financial life actually happen.
Homestead
The Principal Residence Exemption removes up to 18 mills of local school operating tax from an owner-occupied primary home, filed with the local assessor using Form 2368 by June 1 to take effect for the current tax year. Because PRE eligibility legally requires the property to be the owner's actual principal residence, and Treasury audits claims going back three years, applying for or continuing to hold a PRE is a meaningful, checkable data point in any later domicile dispute in either direction.
Voter Registration
Register online, by mail (received at least 15 days before Election Day), or in person at your local clerk's office, including same-day registration through Election Day. https://www.michigan.gov/sos/elections/voting
Vehicle Registration Deadline
30 days
New Resident Tax Traps
A new full-year Michigan resident is taxed on worldwide income from the date Michigan residency begins, reported on Form MI-1040 with Schedule NR handling the split year. New residents settling in Detroit, Grand Rapids, Lansing, or one of the other 21 Michigan cities with a local income tax should register for that city tax separately, since it is administered apart from the state MI-1040 in most cases.
What Changes on Tax
Illinois Top Rate
4.95% (flat)
Michigan Top Rate
4.25% (flat)
Moving from Illinois to Michigan drops the top marginal income tax rate from about 4.95% to about 4.25%, a reduction of roughly 0.7 percentage points.
Withholding Reciprocity
Illinois and Michigan have a wage-withholding reciprocity agreement. A W-2 employee who lives in one state and works in the other is generally taxed only by the resident state on those wages, not both, though the agreement typically covers wage income only and does not extend to business or investment income.
Community Property Transition
Illinois and Michigan both use common law, equitable-distribution marital property rules, so no community property transition applies to this move.
Beyond Income Tax
Illinois
Capital gains: No preferential rate. Capital gains are taxed as ordinary income at the same 4.95% flat rate as wages.
Estate or inheritance tax: Illinois has an estate tax with a $4 million exemption per estate that is not indexed for inflation and is not portable between spouses. Rates are graduated from roughly 0.8% up to 16% on the amount above the exemption. There is no separate inheritance tax.
Property tax: Illinois has the highest statewide effective property tax rate in the country, around 1.92% of home value, more than double the national median. The General Homestead Exemption reduces the taxable assessed value of an owner-occupied principal residence by up to $10,000 in Cook County, $8,000 in counties bordering Cook, and $6,000 elsewhere.
Sales tax: State base rate is 6.25%, but local home-rule and county taxes push combined rates as high as 11.5% in parts of Cook, Kane, and Warren counties; the effective statewide average is closer to 8.9%.
Michigan
Capital gains: No preferential rate. Capital gains are taxed as ordinary income at the flat 4.25% state rate.
Estate or inheritance tax: Michigan has no state estate tax and no inheritance tax. Only the federal estate tax, with its roughly $15 million per-person exemption in 2026, can apply to a Michigan decedent's estate.
Property tax: Michigan's average effective property tax rate is roughly 1.25% to 1.35% of home value. The Principal Residence Exemption (PRE) removes up to 18 mills of local school operating tax from an owner-occupied primary home; the Department of Treasury audits PRE claims for the current year plus the three preceding years, making it a real cross-check point for anyone who has moved out of state.
Sales tax: Michigan has a flat 6% state sales tax with no additional local or county sales tax anywhere in the state, making the rate uniform statewide.
Who This Move Applies To
Travel Nurses
In Illinois
Illinois has no statutory day-count test to trip, so a travel nurse not domiciled in Illinois does not become an Illinois resident merely by crossing a day threshold on a long assignment. What creates exposure instead is the temporary or transitory question and the 100.3020(f) presumptions: an assignment structured as a series of renewals that keeps a nurse in Illinois more than nine months of a year, or more days than in any other state, supports a presumption of residency that must be rebutted by clear and convincing evidence, and the permanent or temporary nature of the work assignment is named in the rule as relevant evidence. The more common Illinois exposure is the reverse pattern, where a nurse claims a Florida or Texas tax home but actually lives in and pays Illinois-area rent for most of the year; Illinois-source wages for days actually worked in Illinois are taxable to any nonresident nurse regardless of claimed tax home.
In Michigan
Michigan applies its ordinary domicile and 183-day deeming rule to a travel nurse the same as anyone else: a nurse who lives in Michigan at least 183 days in a tax year is statutorily deemed a Michigan domiciliary regardless of a claimed out-of-state tax home. The more frequent exposure runs the other way, where a nurse claims a Florida or Texas tax home while actually renting in Michigan for most of an assignment; Michigan and, where applicable, a Michigan city both tax nonresident wages for days actually worked in the jurisdiction regardless of the claimed tax home.
Professional Athletes
In Illinois
Illinois taxes nonresident professional athletes on a duty-day basis: Illinois-source income equals total compensation multiplied by the ratio of duty days in Illinois (games, practices, mandatory team functions) to total duty days for the season; mere travel through Illinois without a game or team event does not create a duty day. This applies to visiting teams playing the Bears, Bulls, Blackhawks, White Sox, and Cubs, and Illinois is regarded by practitioners as an aggressive, well-enforced jock-tax state that historically extended the tax reciprocally to any state that taxed Illinois-based athletes.
In Michigan
Michigan and the City of Detroit both tax nonresident professional athletes on a duty-day basis. Detroit's jock tax, formally codified in 2017, applies its duty-day apportionment broadly, reaching injured players who travel with the team as well as coaches, trainers, and other team personnel required to travel and perform services, not just players who take the field. This applies to visiting teams playing the Lions, Pistons, Tigers, and Red Wings.
Snowbirds, Long Visitors, and RVers
In Illinois
The Illinois snowbird risk runs entirely through the 100.3020(f) presumptions, not through a day threshold. A retiree who keeps the Illinois house and spends more than nine months there risks the nine-month presumption of residency, and a former Illinois resident is presumed to still be one in the following year if present in Illinois more days than in any other state, which is a comparison a snowbird splitting a year can lose well short of any traditional threshold. The favorable counterweight is Cain v. Hamer, 2012 IL App (1st) 112833, where retirees who split time nearly evenly (1,666 Illinois days against 1,700 Florida days across 1996 through 2004) were held nonresidents, with the court weighing nexus evidence such as Florida licenses, voter registration, a Florida declaration of domicile, club spending, and credit card data showing 73% of expenditures and 61% of transactions outside Illinois. Illinois's General Homestead Exemption is a specific cross-check point if a person claims Florida domicile but keeps the Illinois exemption active.
In Michigan
The Michigan snowbird risk runs directly through the Principal Residence Exemption and the 183-day deeming rule together. Campbell v. Department of Treasury shows that simply acquiring a second home in a state like Arizona, without more, was enough for Treasury to deny the PRE on the Michigan home for the following tax year, and Treasury's three-year lookback on PRE claims means a snowbird's arrangement gets checked retroactively, not just going forward. Separately, spending at least 183 days in Michigan in a year, even a retiree splitting time between an Up North cottage and Florida, statutorily deems that person a Michigan domiciliary for the year.
Remote Workers
In Illinois
Illinois has no convenience-of-the-employer rule. A nonresident who works remotely from another state for an Illinois-based employer is generally not taxed by Illinois on those wages, because Illinois sources employee compensation to where the services are physically performed, not to the employer's location. This makes Illinois meaningfully less sticky for remote workers than New York or a handful of other convenience-rule states.
In Michigan
Michigan has no convenience-of-the-employer rule at the state level. A nonresident who works remotely from another state for a Michigan-based employer is generally not taxed by Michigan on those wages, since the state sources employee compensation to where work is physically performed rather than to the employer's location; the same principle generally applies to Michigan's local city income taxes.
Military
In Illinois
Illinois follows the federal Servicemembers Civil Relief Act and Military Spouses Residency Relief Act. A servicemember whose home of record is Illinois remains an Illinois domiciliary for tax purposes regardless of duty station unless they take affirmative steps to change domicile, while a servicemember stationed in Illinois on orders, and their qualifying spouse, does not become an Illinois resident solely because of the posting, and military pay is not Illinois-source income for a nonresident servicemember stationed there.
In Michigan
Michigan follows the federal Servicemembers Civil Relief Act and Military Spouses Residency Relief Act. A servicemember whose domicile was Michigan before entering service remains a Michigan domiciliary regardless of duty station unless they affirmatively establish a new domicile, while a servicemember stationed in Michigan on orders, and a qualifying spouse, does not become a Michigan resident solely because of the posting.
Airline Crew
In Illinois
Federal law (49 U.S.C. §40116) limits states to taxing airline employee compensation only in the employee's state of residence and any state where more than 50% of pay is earned. This protects flight crew based at O'Hare or Midway who are domiciled outside Illinois from having their full compensation pulled into Illinois taxation solely because their duty station is in Illinois.
In Michigan
Federal law (49 U.S.C. §40116) limits states to taxing airline employee compensation only in the employee's state of residence and any state where more than 50% of pay is earned, protecting flight crew based at Detroit Metro who are domiciled outside Michigan from full-income Michigan taxation based solely on their duty station.
Tools for This Move
Illinois to Michigan FAQ
Does Illinois have a 183-day rule like New York or Minnesota?+
No. This is the single most common misconception about Illinois residency. 35 ILCS 5/1501(a)(20) contains no day-count threshold and no permanent place of abode prong; a resident is someone in Illinois for other than a temporary or transitory purpose, or an Illinois domiciliary absent for a temporary or transitory purpose. What Illinois has instead are the rebuttable presumptions in 86 Ill. Adm. Code 100.3020(f), including a presumption of residency above nine months in the aggregate and a presumption that a prior-year resident remains one if present in Illinois more days than in any other state. The practical difference is real in both directions: crossing 183 Illinois days does not by itself make you a resident, and staying under 183 does not by itself make you a nonresident.
Does Michigan really deem me a resident just for spending 183 days here, even if I don't consider it my home?+
Yes. MCL 206.18 doesn't just create a presumption, it statutorily deems anyone who lives in Michigan at least 183 days in a tax year to be a resident domiciled in Michigan for that year. That's a stronger legal hook than the rebuttable presumptions some other states use, so if you're trying to avoid Michigan residency, staying meaningfully under 183 days matters more than in states where the threshold is just one factor among several.
If I move to Florida but keep my Chicago condo, will Illinois still tax me?+
Keeping the condo does not by itself make you taxable, because Illinois has no permanent place of abode test that a retained condo could trigger. The risk runs through purpose and presumptions instead. If you spend more than nine months of the year in Illinois, or simply more days there than in any other state after a year as an Illinois resident, the Department gets a presumption of residency you can rebut only by clear and convincing evidence. Continuing to claim the General Homestead Exemption on the condo is worse than the condo itself, since that alone creates its own presumption of Illinois residency and is a cross-check Illinois auditors run directly against a claimed out-of-state domicile.
I bought a house in Arizona but didn't sell my Michigan home yet. Will that cost me my homestead exemption?+
It can, based directly on Michigan Supreme Court precedent. In Campbell v. Department of Treasury, a lifelong Michigan resident lost his Principal Residence Exemption for the year after he bought a second home in Arizona, even though he hadn't necessarily moved there full-time. The court read Michigan's PRE statute to terminate the exemption once you acquire another property that could function as a principal residence, so the exemption is a real cross-check risk the moment you close on an out-of-state home, not just once you've fully relocated.
Does Illinois have a convenience-of-the-employer rule for remote workers?+
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.
How far back can Michigan audit my Principal Residence Exemption?+
Treasury audits PRE claims for the current tax year plus the three immediately preceding tax years under MCL 211.7cc(8). That three-year lookback is Michigan's most concrete and commonly applied residency-adjacent enforcement tool, so if you've claimed the exemption while spending significant time at an out-of-state property, expect that history to be reviewable for several years, not just going forward.
How do I file my Illinois taxes for the year I move out of state?+
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.
Does not paying tax anywhere else hurt my case if Michigan challenges my residency?+
Yes, and Michigan's own regulation says so directly. Mich. Admin. Code R. 206.5 lists the factors Treasury weighs in a domicile dispute, and specifically flags failure to pay income tax in the state you claim as your new domicile as very significant evidence against you. If you've told Michigan you moved to a no-income-tax state, that's consistent with your claim; if you claim to have moved to a state with an income tax but never actually filed or paid there, that gap is exactly what Treasury looks for.
I work in Illinois but live in Wisconsin. Do I have to file two state returns?+
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.
Do I have to file a Michigan return for the year I move out?+
Yes. File Form MI-1040 together with Schedule NR, the Nonresident and Part-Year Resident Schedule, which splits your income between the Michigan-resident period, taxed in full, and the nonresident period, when only Michigan-source income is taxed. If you also live or work in a Michigan city with its own income tax, like Detroit, that city return is generally separate from the state filing.
Will keeping the homestead exemption on my Illinois house hurt me if I claim Florida residency?+
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.
Does Michigan tax my pension after I retire?+
As of the 2026 tax year, Michigan has fully restored its retirement income exemptions: taxpayers born before 1946 have an unlimited public pension subtraction, and younger retirees can now subtract retirement and pension income on the same terms, effectively undoing the phase-out that applied to younger retirees between 2012 and 2023. Social Security is exempt for everyone regardless of birth year.
Planning the reverse move?
Michigan to Illinois
Moving the other direction is a different fact pattern, not a mirror image. Establishing Illinois residency has its own tests, deadlines, and audit posture.
Start with the Illinois residency guideAlso Consider, Leaving Illinois
Illinois to Michigan Reading
Reviewed Against 26 Primary Sources
ResidencyIQ organizes public residency research into a reviewable reference. It does not provide legal or tax advice. Consult a qualified professional before making a residency decision.
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