Residency Migration Reference
Moving from Kansas to Illinois: Residency, Taxes, and What to Prove
The top income tax rate drops from 5.58% in Kansas to 4.95% (flat) in Illinois. Establishing Illinois residency correctly is what protects that benefit.
Residency Tests Side by Side
Neither Kansas nor Illinois relies on a simple statutory day-count threshold. Both apply a facts-and-circumstances or closest-connections style test, so day counting alone will not settle a residency question in either direction.
| Factor | Kansas | Illinois |
|---|---|---|
| Statutory Residency Test | Kansas does not run a separate day-count statutory residency test layered on top of domicile the way New York or California do. Kansas Department of Revenue guidance defines a Kansas resident for income tax purposes as anyone who lives in Kansas, regardless of where they are employed, and an individual who is away from Kansas for a period of time but intends to return remains a Kansas resident the entire time they are away. K.S.A. 79-32,109 supplies the underlying statutory definition of resident individual that KDOR guidance implements. | 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. |
| Domicile Test | Kansas weighs the usual facts-and-circumstances domicile factors under Kansas Administrative Regulation 92-12-4: where the taxpayer's permanent home is, where they are registered to vote, where their driver's license and vehicle registration are held, where they claim the Kansas Homestead Refund, and the location of family, employment, and financial accounts. No single factor is dispositive; KDOR and the Board of Tax Appeals weigh the whole pattern of conduct. | 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. |
| Day Count Threshold | No fixed threshold | No fixed threshold |
| Any Part of a Day Rule | Not applicable. Kansas has no statutory day-count test, so there is no rule treating a single hour of physical presence as a full day the way California and New York do for their own statutory residency tests. A Kansas domicile dispute turns on intent and conduct, not a day tally. | 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. |
| Presumptions | None published | 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. |
| Safe Harbors | None published | None published |
Leaving Kansas
Kansas is not named among the handful of aggressive exit-audit states that practitioners and Reddit's r/tax regulars flag most often, a list that consistently runs to New York, California, New Jersey, Connecticut, Maryland, and Minnesota. The real Kansas exit friction shows up locally in the Kansas City metro, which straddles the Kansas-Missouri state line: households who move a few miles from Overland Park or Olathe (Kansas) to the Missouri side of the metro but keep a Kansas driver's license, Kansas voter registration, or a Kansas Homestead Refund claim on a house they've converted to a rental are the pattern most likely to draw a residency inquiry, because those records are the ones KDOR can cross-check without a full field audit.
Trailing Income
Kansas continues to tax Kansas-source income earned by a nonresident after departure: wages for work physically performed in Kansas, income from a Kansas-based business, and gain on Kansas real property. Kansas has no published convenience-of-the-employer rule comparable to New York's, so a former Kansas resident who now works remotely from another state for a Kansas employer generally is not taxed by Kansas on those post-move wages solely because the employer is Kansas-based.
Part-Year Filing
Part-year residents file Form K-40 and complete Part B of Schedule S, which allocates income between the Kansas-resident portion of the year and the nonresident portion, and reports the specific dates Kansas residency began or ended.
Enforcement Methods
Common Exit Mistakes
Establishing Illinois Residency
| Action | Agency | Deadline |
|---|---|---|
| Obtain an Illinois driver's license | Illinois Secretary of State | within 90 days of establishing residency (out-of-state license valid until then) |
| Register any vehicle kept in Illinois, with Illinois insurance in place first | Illinois Secretary of State, Vehicle Services | within 30 days of establishing residency |
| Register to vote | Illinois State Board of Elections | online and mail registration closes 16 days before an election; grace-period in-person registration and voting runs from 27 days before Election Day through Election Day |
Declaration of Domicile
Illinois has no formal declaration-of-domicile filing comparable to Florida's county-level process. Domicile is established through conduct alone: buying or leasing a home, getting the Illinois license and plates, registering to vote, and shifting the pattern of where professional, banking, and family life actually happens.
Homestead
The General Homestead Exemption reduces the equalized assessed value of an owner-occupied principal residence by up to $10,000 in Cook County, $8,000 in the counties bordering Cook, and $6,000 elsewhere, and requires ownership and occupancy as of January 1 of the tax year. It functions as useful domicile evidence for someone establishing Illinois residency, since applying for it requires attesting the home is a principal residence, and county assessors can cross-check driver's license and voter registration addresses against the exemption claim.
Voter Registration
Register online through the Illinois Online Voter Registration Application, by mail, or in person; online and mail registration closes 16 days before an election, with grace-period registration and same-day voting available from 27 days before Election Day through Election Day itself. https://ova.elections.il.gov
Vehicle Registration Deadline
30 days
New Resident Tax Traps
A new full-year Illinois resident is taxed on worldwide income from the date Illinois residency begins, computed on Form IL-1040 with Schedule NR handling the split year. Because Illinois has no capital gains preference, a large gain realized right after establishing residency (stock sale, business sale, Roth conversion) is taxed at the full 4.95% flat rate with no bracket cushion the way some other states offer at lower income levels.
What Changes on Tax
Kansas Top Rate
5.58%
Illinois Top Rate
4.95% (flat)
Moving from Kansas to Illinois drops the top marginal income tax rate from about 5.58% to about 4.95%, a reduction of roughly 0.63 percentage points.
Withholding Reciprocity
Kansas and Illinois do not have a wage-withholding reciprocity agreement with each other, so this move follows ordinary source-state and resident-state filing rules rather than a reciprocity exception.
Community Property Transition
Kansas and Illinois both use common law, equitable-distribution marital property rules, so no community property transition applies to this move.
Beyond Income Tax
Kansas
Capital gains: Kansas has no separate capital gains rate. Gains flow through federal adjusted gross income into Kansas adjusted gross income and are taxed at the same 5.2%/5.58% rates as ordinary income.
Estate or inheritance tax: None. Kansas repealed its inheritance tax decades ago and has no separate estate tax; only the federal estate tax, with its much higher exemption, can reach a Kansas decedent's estate.
Property tax: Effective property tax rate on owner-occupied housing runs about 1.21%. Kansas does not use a Florida-style homestead exemption that reduces taxable value; instead it runs the Homestead Refund program (Form K-40H), an income-capped property tax rebate of up to $700 for qualifying homeowners who are 55 or older, blind or disabled, or have a dependent child under 18, and a separate 75% property tax refund (Form K-40PT) for homeowners 65 and older with lower household income.
Sales tax: State rate is 6.5%, with a statewide average combined rate (state plus local) of about 8.69%, one of the higher combined averages in the country because Kansas allows extensive city and county sales tax stacking.
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%.
Who This Move Applies To
Travel Nurses
In Kansas
Kansas has no statutory carve-out for travel nurses distinct from its general domicile test; a nurse's Kansas tax home question is resolved under IRS Publication 463's tax-home concept for federal stipend treatment, and Kansas residency then follows the same domicile-and-intent analysis as any other taxpayer. Kansas hospital systems in Wichita, Topeka, and the Kansas City metro draw a steady stream of travel nursing assignments, and a nurse who claims a tax home outside Kansas while spending most of the year in a Kansas rental apartment faces the same tax-home disallowance risk documented nationally on travel-nurse forums.
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.
Professional Athletes
In Kansas
Kansas is home to the Kansas Speedway and hosts Chiefs training-camp-adjacent business activity given the team's Kansas City, Missouri stadium sits just across the state line, but Kansas itself has no major-league franchise based in-state. Visiting athletes who play games in Kansas (at Kansas Speedway events or exhibition games) are subject to Kansas's duty-day apportionment framework for nonresident athlete income, consistent with how most states with an income tax administer the jock tax.
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.
Snowbirds, Long Visitors, and RVers
In Kansas
Because Kansas has no day-count statutory residency test, a Kansas snowbird who winters in Arizona or Florida does not face a bright-line trigger the way a New York or California resident would; the question is simply whether the Kansas home remains the taxpayer's true domicile, judged on the same conduct factors (driver's license, voter registration, Homestead Refund claims) as any other Kansas residency question. The bigger snowbird risk runs the other direction: a Kansas Homestead Refund claim requires full-year Kansas residency, so a homeowner who spends a large part of the year in a warm-weather state should not claim it if they can't support full-year Kansas residency.
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.
Remote Workers
In Kansas
Kansas has no published convenience-of-the-employer rule, so a genuine Kansas resident working remotely for an out-of-state employer is taxed by Kansas as a resident regardless of the employer's location, and a nonresident working remotely for a Kansas employer generally is not pulled into Kansas tax solely because the employer is headquartered there. The recurring Kansas-specific version of this issue is Kansas City metro commuters: someone who lives on the Kansas side and works, even partly remotely, for a Missouri-based employer (or vice versa) has to track actual work-location days carefully, since neither state applies a convenience rule to override where the work was physically performed.
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.
Military
In Kansas
Kansas follows the federal Servicemembers Civil Relief Act and Military Spouses Residency Relief Act. A servicemember whose home of record is Kansas remains a Kansas domiciliary and taxpayer regardless of duty station, and Kansas does not tax the military pay of a nonresident servicemember stationed in Kansas solely because of orders. Fort Riley and McConnell Air Force Base are the state's major installations, and Kansas allows a nonmilitary spouse to elect the servicemember's state of legal residence under MSRRA for Kansas tax purposes.
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.
Airline Crew
In Kansas
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. Wichita is home to significant aviation manufacturing (Textron Aviation, Spirit AeroSystems) but is not a major airline crew base; crew based elsewhere who happen to be Kansas domiciliaries are protected by the federal carve-out from having their full income pulled into a duty-station state's tax.
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.
Tools for This Move
Kansas to Illinois FAQ
Does Kansas use a 183-day rule like some other states?+
No. Kansas has no statutory day-count test at all. A Kansas resident for tax purposes is simply anyone who lives in Kansas, and someone who is temporarily away from Kansas but intends to return is still treated as a Kansas resident the entire time, regardless of how many days that absence lasts.
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.
I moved from the Kansas side of Kansas City to the Missouri side but kept my old Kansas driver's license. Is that a problem?+
Yes, it's the single most common Kansas residency issue given how many households move within the KC metro across the state line. A Kansas driver's license, Kansas voter registration, or a Kansas Homestead Refund claim on your old house are all direct evidence of continued Kansas domicile, and the Homestead Refund specifically requires full-year Kansas residency, so keeping that claim after moving to Missouri is a clear contradiction if the state ever checks.
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.
Does Kansas tax my Social Security benefits?+
No, as of tax year 2024 Kansas fully exempts Social Security benefits regardless of income, after the 2024 tax reform package repealed the prior $75,000 federal AGI phase-out that used to tax benefits for higher earners.
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.
What form do I file if I only lived in Kansas part of the year?+
Part-year residents file Form K-40 along with Part B of Schedule S, which reports the specific dates Kansas residency began or ended and allocates income between the Kansas-resident and nonresident portions of the year.
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.
Is Kansas an aggressive state for residency audits like California or New York?+
No. Kansas is not on the short list of states practitioners and taxpayer forums consistently flag as aggressive on residency, a list dominated by New York, California, New Jersey, Connecticut, Maryland, and Minnesota. Kansas has no day-count test to enforce, so its residency disputes are narrower and concentrate on driver's license, voter registration, and Homestead Refund records rather than a multi-year presence reconstruction.
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.
Does Kansas have a homestead exemption that lowers my property taxes?+
Not in the Florida sense of a value-reducing exemption. Kansas instead runs the Homestead Refund (Form K-40H), an income-capped rebate of up to $700 for qualifying homeowners who are 55 or older, blind or disabled, or have a dependent child under 18, plus a separate 75% property tax refund for homeowners 65 and older with lower income. Both require full-year Kansas residency to claim.
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.
Considering the reverse move?
Illinois to Kansas
Moving the other direction is a different fact pattern, not a mirror image: exit risk and establishment mechanics both flip.
View the Illinois to Kansas guideAlso Consider, Leaving Kansas
Kansas to Illinois Reading
Reviewed Against 22 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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