Residency Migration Reference
Moving from Illinois to New Jersey: Residency, Taxes, and What to Prove
Illinois's 4.95% (flat) top income tax rate becomes 10.75% in New Jersey. This move trades a lighter tax environment for a heavier one, so timing income around the transition year matters.
Residency Tests Side by Side
Illinois does not use a simple day-count threshold; it applies a facts-and-circumstances test instead. New Jersey's statutory residency test uses a 183-day threshold.
| Factor | Illinois | New Jersey |
|---|---|---|
| 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. | N.J.S.A. 54A:1-2(m): a resident is anyone domiciled in New Jersey, or anyone who is not domiciled in New Jersey but maintains a permanent place of abode there and spends, in the aggregate, more than 183 days of the taxable year in the state. Meeting either prong, domicile or the 183-day-plus-abode combination, makes a person a full resident taxed on worldwide income. |
| 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. | New Jersey courts treat domicile as a person's true, fixed, permanent home, the place they intend to return to whenever absent. Once established, domicile is presumed to continue at the same location until a taxpayer proves both an intent to abandon it and the establishment of a new one elsewhere. Courts weigh home ownership and use, driver's license and vehicle registration, bank and brokerage account location, school enrollment for children, employment, and how quickly the taxpayer returned to New Jersey after the claimed move. |
| 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. | Generally yes, presence in New Jersey for any part of a day counts toward the 183-day count, consistent with how New York and Connecticut apply the rule, though New Jersey's published guidance is less granular than New York's regulation on specific travel-day exceptions. |
| 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. | Domicile is presumed to continue at its established location until the taxpayer affirmatively proves both abandonment of the old domicile and acquisition of a new one; this presumption was decisive against the taxpayers in Samuelsson v. Director. |
| 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 New Jersey Residency
| Action | Agency | Deadline |
|---|---|---|
| Obtain a New Jersey driver's license and register any vehicle | Motor Vehicle Commission | within 60 days of becoming a resident |
| Register to vote | NJ Division of Elections / County Commissioner of Registration | at least 21 days before an election |
Declaration of Domicile
New Jersey has no formal declaration-of-domicile filing comparable to Florida's county-recorded process. Domicile is established purely through conduct, and the same fact pattern used to prove a move (home purchase, MVC registration, voter registration, time actually spent) is exactly what a later audit re-examines.
Homestead
The ANCHOR program is a property tax rebate for both owners and renters, income-capped, and available only for a principal residence occupied as of a set date each base year. It is not an asset-protection homestead exemption in the Florida sense, but enrolling in it on a New Jersey home is documented evidence the property is your principal residence, and continuing to claim it on a New Jersey home while filing a nonresident return elsewhere is a direct contradiction auditors look for.
Voter Registration
Register online, by mail, or in person through the County Commissioner of Registration or the MVC at least 21 days before an election; New Jersey requires 30 days of county residency before Election Day. https://www.nj.gov/state/elections/voter-registration.shtml
Vehicle Registration Deadline
60 days
New Resident Tax Traps
Full New Jersey taxation of worldwide income begins on the date domicile or statutory residency starts; a mid-year move is split between NJ-1040 and NJ-1040NR. Retirees moving in should note the retirement income exclusion disappears entirely, not partially, once total income exceeds $150,000, which is a hard planning cliff rather than a gradual phase-out.
What Changes on Tax
Illinois Top Rate
4.95% (flat)
New Jersey Top Rate
10.75%
Moving from Illinois to New Jersey raises the top marginal income tax rate from about 4.95% to about 10.75%, an increase of roughly 5.8 percentage points.
Withholding Reciprocity
Illinois and New Jersey 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
Illinois and New Jersey 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%.
New Jersey
Capital gains: Capital gains have no preferential rate and are taxed as ordinary income under the Gross Income Tax's Category A (net gains from disposition of property), at the same graduated rates as wages.
Estate or inheritance tax: New Jersey repealed its estate tax effective January 1, 2018. It still has an inheritance tax, but spouses, domestic partners, children, grandchildren, parents, and stepchildren (Class A beneficiaries) are fully exempt. Siblings and children-in-law (Class C) get a partial exemption and pay reduced rates; unrelated beneficiaries and distant relatives (Class D) are taxed at rates up to 16%.
Property tax: New Jersey has the highest effective property tax burden in the nation, averaging roughly 2.23% of home value. The ANCHOR program provides an income-capped rebate to both homeowners and renters whose principal residence is in New Jersey, functioning as informal domicile evidence even though it is a rebate, not a true exemption.
Sales tax: Statewide flat rate of 6.625% with no general local add-on; certain Urban Enterprise Zones charge a reduced rate on some purchases.
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 New Jersey
The same statutory test applies to a travel nurse as to any other worker: a nurse who is not domiciled in New Jersey but keeps a New Jersey apartment for an extended assignment and accumulates more than 183 days in the state becomes a statutory resident taxed on worldwide income. Nurses claiming a tax home in a no-income-tax state while actually living in and never visiting that claimed home face the same tax-home challenges under federal rules that they would in any other high-scrutiny state.
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 New Jersey
New Jersey taxes nonresident professional athletes on New Jersey-source income using duty-day apportionment for games played at MetLife Stadium and the Prudential Center. This catches every visiting team plus the home rosters of the New York Giants, New York Jets, and New Jersey Devils, all three of which are legally domiciled and play their home games in New Jersey despite the Giants' and Jets' branding.
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 New Jersey
Keeping a New Jersey house while wintering in Florida creates two separate exposures: the 183-day statutory residency test for income tax, and the domicile-continuity presumption that governs New Jersey's inheritance tax. Samuelsson v. Director shows courts look past a Florida driver's license and school enrollment to whether the New Jersey home was ever sold or rented and whether the family returned quickly, so a snowbird pattern that never lets go of the New Jersey house is high risk under both tests.
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 New Jersey
New Jersey enacted its own convenience of the employer rule in 2023 (P.L. 2023, c.125, retroactive to January 1, 2023), which taxes a nonresident who telecommutes for a New Jersey employer for their own convenience, rather than the employer's necessity, as if the work were performed in New Jersey. The rule is reciprocal by design and currently reaches residents of Delaware, Nebraska, and New York, the states with their own convenience rules; Pennsylvania residents are excluded because of the separate PA-NJ reciprocal agreement, and Connecticut residents are excluded because Connecticut's rule is itself reciprocal.
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 New Jersey
New Jersey follows the federal Servicemembers Civil Relief Act and Military Spouses Residency Relief Act: a servicemember or accompanying spouse domiciled elsewhere who is in New Jersey solely on military orders does not become a New Jersey domiciliary, and the servicemember's military pay is not taxed by New Jersey if they remain domiciled in another state.
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 New Jersey
Federal law (49 U.S.C. §40116) limits states to taxing air carrier employee compensation only in the employee's state of residence and any state where they earn more than 50% of their pay. This is directly relevant to crew based at Newark Liberty International Airport, a major hub, who are domiciled outside New Jersey.
Tools for This Move
Illinois to New Jersey 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 New Jersey really have an exit tax when I sell my house and move to Florida?+
Not in the sense most people mean. There is no separate New Jersey tax charged for the act of leaving. What exists is a withholding requirement, GIT/REP, collected at the closing table when a nonresident sells New Jersey real estate, equal to the greater of 2% of the sale price or the estimated gain at the top 10.75% rate. That withholding is credited against your actual New Jersey tax bill when you file, and if you still resided in New Jersey when the deed transferred, it does not apply at all.
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.
If I sell my New Jersey home before I move, does that end my New Jersey tax exposure?+
Selling the home removes it as evidence, but it does not automatically end exposure. Samuelsson v. Director shows New Jersey courts presume domicile continues at its last established location until a taxpayer proves both intent to abandon it and establishment of a new one; in that case, never selling the New Jersey house was decisive against the taxpayers. Selling the house, not renewing New Jersey vehicle registration, and not returning quickly all matter more than any single document like a Florida driver's license.
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.
My employer is based in New Jersey but I work remotely from New York, do I owe New Jersey tax?+
Not under New Jersey's own convenience of the employer rule, at least not for that reason. New Jersey's 2023 convenience rule only reaches nonresidents from states that impose their own convenience rule on New Jersey residents, currently Delaware, Nebraska, and New York. So a New York resident telecommuting for a New Jersey employer can actually be pulled the other direction, by New York's convenience rule, not New Jersey's, depending on which state's rule the facts trigger first.
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 claiming the ANCHOR benefit on my New Jersey home hurt me if I say I've moved out of state?+
It can. ANCHOR requires the property to be your principal residence as of the program's set date, so continuing to receive it on a New Jersey home while filing a nonresident return and claiming domicile elsewhere is a direct contradiction the Division of Taxation can cross-check. If you've genuinely moved, stopping ANCHOR enrollment on the New Jersey property is one of the administrative steps that supports your new residency claim.
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.
Can I still visit my house in New Jersey after I move to Florida without it hurting my residency claim?+
Occasional visits are lower risk than a pattern of extended stays, but the details matter more than the visit count alone. In Samuelsson, the taxpayers' return to New Jersey within about a year, combined with never selling the house, was enough for the Tax Court to find domicile had never been abandoned. A short visit to a sold or rented-out former home is far safer than repeated stays in a house you still own and could move back into at any time.
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.
If I keep my New Jersey day count under exactly 183 days, am I safe?+
Staying under 183 days protects you from the statutory residency test, but not necessarily from a domicile challenge if you never formally abandoned New Jersey as your true home, and it does nothing for New Jersey's separate inheritance tax exposure, which turns on domicile, not day counts. Many taxpayers assume the 183-day rule is the whole test; it is only one of two independent ways New Jersey can claim you as a resident.
Considering the reverse move?
New Jersey to Illinois
Moving the other direction is a different fact pattern, not a mirror image: exit risk and establishment mechanics both flip.
View the New Jersey to Illinois guideAlso Consider, Leaving Illinois
Illinois to New Jersey Reading
Reviewed Against 35 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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