Burden of Proof: Why "They Can’t Prove I Was There" Is Backwards

It comes up early, usually in a fairly confident voice. They cannot prove I was there. I did not sign anything, I did not file anything in that state, nobody took my picture at the border. If the state wants to say I was in New York on a Tuesday in March, let them come up with the evidence.

The instinct behind that sentence is not stupid. It is the instinct almost every American has absorbed from a lifetime of courtroom drama, where the government carries the burden, the defendant can say nothing at all, and doubt is a resource the accused gets to spend. That is a real allocation of proof, and it is the correct one, in a criminal proceeding.

A residency audit is not one. It is a civil tax proceeding, and in a civil tax proceeding the allocation is reversed, in writing, by statute and regulation, before anyone looks at a single fact of your life. The state does not have to prove you were there. You have to prove you were not. In New York you have to do it by clear and convincing evidence, which is a higher standard than the one that decides most civil lawsuits. And the number you are arguing against is not a hypothesis, it is an assessment the law already treats as correct until you dislodge it.

That inversion is the single most expensive misunderstanding in this entire area, because it changes what a missing day is worth. If the state carried the burden, a day with no record would be a day the state loses. Since you carry it, a day with no record is a day you lose. Every gap in the file scores for the other side by default, and there is no version of the argument where silence helps you.

This article is informational and is not legal or tax advice. Burden and standard of proof vary by jurisdiction and by the specific issue in dispute; work through your own facts with a qualified CPA or tax attorney.

It is worth seeing how plainly this is stated, because people tend to assume the burden is something an aggressive auditor asserts rather than something the legislature already decided.

In New York, Tax Law section 689(e) governs proceedings before the Division of Tax Appeals and says that "the burden of proof shall be upon the petitioner." The petitioner is you. The statute then lists the exceptions, which are narrow and specific: fraud with intent to evade tax, transferee liability, an increase in a deficiency asserted after the notice went out, and two named penalty provisions. Everything else, including every factual question about where you lived and how many days you were there, is yours to prove.

One layer down, the regulation that defines a New York day also imposes an affirmative recordkeeping duty. Under 20 NYCRR 105.20(c), any person domiciled outside New York who maintains a permanent place of abode in the state during the year and claims to be a nonresident "must keep and have available for examination by the Department of Taxation and Finance adequate records to substantiate the fact that such person did not spend more than 183 days of such taxable year within New York State." Read that as what it is. The obligation to build the evidence is placed on you by rule, in advance, as a condition of the position you are taking on your return. You are not being asked to defend yourself against a case someone else assembled. You are being asked to produce the file you were already required to keep.

California gets to the same place by a different route. In Appeal of Stephen D. Bragg, 2003-SBE-002, the State Board of Equalization stated it in one sentence: "Respondent’s determinations of residency are presumptively correct, and the taxpayer bears the burden of showing error in those determinations." Before the Office of Tax Appeals, the procedural rule says the same thing. Cal. Code Regs. tit. 18, section 30219(a) puts the burden on the appellant "as to all issues of fact," with the burden shifting to the agency only for new matter the agency itself raises during the appeal, and section 30219(c) reserving the clear and convincing standard for the agency when it alleges fraud.

So in both of the two most aggressive residency states in the country, the question of who has to prove what was settled long before your file was opened, and it was not settled in your favor.

The second half of the allocation is the standard, and this is where New York is harsher than most people expect.

For a change of domicile, New York does not apply the ordinary civil standard of more likely than not. It applies clear and convincing evidence, a standard the state traces to Bodfish v. Gallman, 50 AD2d 457 (3d Dept 1976), and repeats in its own audit manual: "The burden of proving a change of domicile is upon the party asserting the change. The evidence to effect a change of domicile must be clear and convincing." The manual adds that a longtime New York domiciliary claiming a change "must be able to support his intentions with unequivocal acts."

The practical meaning of a heightened standard is easiest to see in a case where the facts were genuinely close. In Matter of Rudolph (dec’d) and Loretta Zapka, DTA No. 804111, the taxpayers had strong ties to both New York and Florida. The Tribunal did not find their Florida evidence weak. It found it evenly matched, and then explained why that loses: "The mere fact that persuasive arguments can be made from the facts in support of both Florida and New York as petitioners’ domicile indicates that they have not clearly and convincingly evidenced an intent to change their New York domicile."

That is the whole lesson in one sentence. A tie is not a tie. Under a clear and convincing standard, a genuinely debatable case is a loss for the person carrying the burden, and the person carrying the burden is you. New York applies the same standard to statutory residency, not just domicile. Its guidelines state that "the standard of proof for statutory resident audits is the same one applicable to matters of domicile, that is, the evidence must be clear and convincing."

California is formally gentler on the standard and no gentler in effect. Before the Office of Tax Appeals the standard is preponderance of the evidence, more likely than not. But Bragg pairs the presumption of correctness with a tiebreaker that points the same direction as New York’s: "If there is a doubt on the question of domicile after presentation of the facts and circumstances, the domicile must be found to have not changed." Doubt resolves against the change. If California was your domicile, doubt resolves for California. Someone moving from California to Texas is arguing against a determination that starts out presumed correct, in a forum where an unresolved question defaults to the state they left.

If you want a single case that demolishes the "they can’t prove I was there" theory, it is Matter of Campaniello v New York State Div. of Tax Appeals Trib., 161 AD3d 1320 (3d Dept 2018).

Thomas Campaniello had Florida connections going back to 1981: a Miami retail furniture showroom, a Key Biscayne condominium, more than twenty five years of history in the state. For 2007, the Administrative Law Judge and the Tribunal credited him with 169 days in New York. Under the statutory residency test, 169 is a comfortable number. It is fifteen days under the line.

He lost anyway, and the Appellate Division confirmed the determination and dismissed the petition. The reason is the allocation of proof. The dispute was not statutory residency, it was domicile, and as the court put it, "As the individual seeking to establish a change in domicile, it was petitioner’s burden to prove his change of domicile by clear and convincing evidence." He did not carry it. Nothing about the state proving he was somewhere. He simply failed to prove, to the required degree, that he had left.

The credibility finding is the part practitioners remember. On both his 2006 and 2007 New York nonresident returns, the "No" box was checked in response to the question of whether he or his spouse maintained living quarters in New York State. The Tribunal deferred to the ALJ’s conclusion that his testimony lacked credibility, and that misrepresentation was a central reason why. Once the fact-finder stops believing you, the burden you were already carrying becomes effectively impossible, because testimony is one of the two ways it can be discharged and yours has been taken off the table.

A day count under the threshold did not save him. It cannot, when the issue is domicile, because domicile has no threshold to be under.

People reach for two forms of silence as though they were evidence. Neither one is.

The first is the absence of records. New York’s appendix of decided cases is largely a catalogue of what that produces. In Ausnit, 212 AD2d 911, DTA No. 808144, the Appellate Division affirmed that a taxpayer failed to prove both a domicile change to Connecticut and fewer than 184 New York days in 1985. The Tribunal’s reasoning was that, "having introduced only minimal documentary evidence and no testimonial evidence," he failed to prove he had changed domicile or that his New York residential properties were not a permanent place of abode. In Allen, DTA No. 808589, the Tribunal held the taxpayer had not met his burden on either domicile or statutory residency, citing the ALJ’s conclusion that a "mere allegation that he never intended New York to be his permanent home" was inadequate.

The second is the absence of a prior audit. This one feels much stronger than it is. In Matter of Richard and Carolyn Farkas, DTA No. 809927, the taxpayer pointed out that he had filed nonresident returns for seven years before the audit period without anyone objecting. The ALJ rejected the argument, holding that "the mere fact that his filings as a nonresident were not questioned (through an audit) does not satisfy his burden of proving that a change of domicile has occurred." New York states the general principle directly in its guidelines: years of unaudited nonresident filings "should not be construed to imply acceptance by the Department of the taxpayer’s nonresident status."

Both of these matter because of how they interact with lookback. A residency audit does not usually open on the current year. It opens on a year that is three or four years old, and it reaches back for evidence that was easy to preserve then and is difficult to reconstruct now. Anyone moving from New York to Florida is entering a jurisdiction that ResidencyIQ’s dossiers rate at the top of the scale for both audit aggressiveness and exit stickiness, with document-intensive audits that commonly run 12 to 24 months. Quiet years are not evidence of acceptance. They are the years you will be asked about.

It would be inaccurate to say the burden is always yours, and the exceptions are worth knowing precisely, because they are the only places where the intuition people bring to this is correct.

The clearest one is direction of travel. New York’s own guidelines state that "the Department bears the burden of proof to show that an individual who was previously a non-domiciliary of New York changed his domicile to New York," and that if the weight of the factors does not present a clear and convincing body of evidence of that change, "the individual is to be treated as a nonresident." The burden always sits with the party asserting the change. It just happens that the party asserting a change is almost always the person who left.

The second is new matter. Under Cal. Code Regs. tit. 18, section 30219(a), if the Franchise Tax Board raises a new factual issue for the first time during an appeal before the Office of Tax Appeals, the burden on that issue is the agency’s, not yours.

The third is fraud. New York Tax Law section 689(e) places the burden on the state for whether the petitioner committed fraud with intent to evade tax, and California section 30219(c) requires the agency to prove fraud by clear and convincing evidence. The seriousness of the allegation shifts the burden; the ordinary question of where you lived does not.

There is also a smaller mercy inside New York’s day counting that gets overlooked. The guidelines instruct auditors that taxpayers "may not always leave a paper trail to substantiate their whereabouts on weekend days when they claim to be at home in their state of domicile," and that in such situations "auditors should generally accept the taxpayer’s allegations absent evidence to the contrary such as a clear pattern of regularly being in New York on weekends." The same manual warns auditors against a lopsided reading of the factors, saying the auditor "should never trivialize steps taken in the new location" while magnifying remaining New York connections, because "a lack of balance would create a heavy burden of proof for taxpayers."

That instruction is real and worth citing when it applies. It is also conditional on a record that establishes the pattern in the first place. The weekend concession is granted to a taxpayer whose year is otherwise documented, not to one whose entire case is that nobody can prove otherwise.

On top of the burden, several states start you behind with a presumption written into the statute itself.

California presumes residency from time alone. Revenue and Taxation Code section 17016 provides that "every individual who spends in the aggregate more than nine months of the taxable year within this State shall be presumed to be a resident." It is rebuttable, and the statute says how: the presumption "may be overcome by satisfactory evidence that the individual is in the State for a temporary or transitory purpose." But note what that structure does. Cross nine months and the default answer is resident, and the work of changing it is yours.

New Jersey presumes continuity of domicile. The state’s own nonresident return instructions define domicile as the place you intend to return to after an absence, then state the sticky part: "Your domicile does not change until you move to a new location with the intent to establish your permanent home there and to abandon your New Jersey domicile. Moving to a new location, even for a long time, does not change your domicile if you intend to return to New Jersey." Length of absence proves nothing on its own. New Jersey also runs a statutory residency test on a permanent home in the state plus more than 183 days, and a lesser known reverse test that catches New Jersey domiciliaries who keep no New Jersey home: if you maintain a permanent home outside the state and still spend more than 30 days in New Jersey, the state’s own filing chart routes you back to a resident return. ResidencyIQ’s dossiers rate New Jersey a 4 out of 5 on audit aggressiveness, with a well-resourced audit program whose classic trigger is a taxpayer who filed as a resident for years and then filed a nonresident return the year they claim to have left while still owning or using a New Jersey home.

And in California, the presumption of correctness pairs with a limitations rule that is worse than most people assume. For a filed part-year or nonresident return, the Franchise Tax Board has four years to assess. If no California return was ever filed for a year the FTB believes you were a resident, R&TC section 19057(a) leaves no statute of limitations at all. The silent nonfiler, not the honest part-year filer, is the highest-risk position in the state.

There is a related version of the misunderstanding that shows up in destination states, and it is worth separating out.

People picture a residency dispute as a contest between two states, with the destination state arguing their side. That is not what happens. Texas has no personal income tax and no residency determination to make about you, so nobody in Texas is filing anything on your behalf or contradicting California’s view of your year. Florida is the same. There is no counterparty. There is one state asserting a deficiency and one person rebutting it, and the destination state is not in the room.

Florida does offer an affirmative act, and it is worth doing, as long as you understand exactly what it does. Fla. Stat. section 222.17 lets a person who has established a Florida domicile "manifest and evidence the same" by filing a sworn statement with the clerk of the circuit court for the county where they reside, stating that they maintain a place of abode there and recognize and intend to maintain it as their permanent home. Filing it creates a dated, sworn, publicly recorded declaration of intent, which is a genuinely useful exhibit. What the statute does not do is make that declaration presumptive proof of domicile or shift anything onto the state you left. It is evidence you generated, weighed alongside everything else.

New Jersey’s own case law shows how far a stack of destination-state paperwork gets you on its own. In Samuelsson v. Director, Division of Taxation, the New Jersey Tax Court held the taxpayers had not abandoned their New Jersey domicile despite obtaining Florida driver’s licenses and vehicle registration, opening Florida bank accounts, and enrolling their children in Florida schools, because they never sold or rented the New Jersey home, never bought Florida property, and returned within about a year. Every one of those Florida acts is on the standard checklist. They were not enough, because the question is not how many destination-state documents you can produce, it is whether you carried the burden of showing you left. Anyone moving from New Jersey to Florida should read Samuelsson as a list of things that are necessary and not sufficient.

The good news, such as it is, is that the standard is about the weight of the evidence, not about a particular exhibit, and the states say so. New York’s guidelines cite Matter of Julian H. and Josephine Robertson, DTA No. 822004, for the proposition that the burden can be met with "testimonial evidence, documentary evidence, or a combination of the two," and point to taxpayers who won with documentation plus affidavits showing an overall living pattern, with contemporaneous diaries supported by credible testimony, and in one case with credible testimony alone.

What separates those from the losses is not the format. It is that the record existed before anyone asked for it, and that it holds together when tested. So the work is not persuading an auditor. It is making sure that in three years there is a file that discharges a burden you already have.

Count days as they happen, against the right threshold. A day you cannot account for is not neutral, it is a day the other side gets to characterize, and thresholds are not uniform across states. The Google Timeline residency importer reads your existing location history entirely in your browser, reports days per state per year against each jurisdiction’s own statutory threshold, and uploads nothing anywhere, which is a reasonable way to see the shape of a year you have already lived before anyone else looks at it.

Answer the return questions accurately, especially the small ones. Campaniello did not lose because of one checkbox, but the checkbox is what cost him his credibility, and credibility is one of the two currencies you can spend on this burden.

Date your intent. A recorded declaration of domicile, a dated lease or purchase, a voter registration, a license: none of them shifts the burden, and all of them put a timestamp on the story you will eventually have to tell.

Do not treat unaudited years as settled. Farkas is the case that says they are not, and the years most likely to be examined are the ones far enough back that the receipts have started to disappear.

And keep the records the rule already requires. If you maintain a home in New York and file as a nonresident, 20 NYCRR 105.20(c) is not advice. It is an obligation you took on when you took the position.

The Mobility Map records days and nights across states as they happen, measured against each jurisdiction’s own day-count threshold, so a year is documented while it is being lived rather than reconstructed once a notice arrives and the burden is already running. Evidence Vault holds the travel, financial, and residence records that turn an assertion about a day into a demonstrated one. AuditIQ surfaces thin days and retained-tie exposure, which is the same weighing exercise an auditor performs, and advisor sharing lets a CPA or tax attorney review the chronology directly.

ResidencyIQ organizes records and highlights potential exposure factors. It is not a law firm or an accounting firm and does not provide legal or tax advice; work with a qualified CPA or tax attorney on your own residency change or audit.

New York Tax Law section 689(e) is the source of the rule that in proceedings before the Division of Tax Appeals "the burden of proof shall be upon the petitioner," and of the four listed exceptions: fraud with intent to evade tax, transferee liability, an increase in a deficiency asserted after the notice of deficiency, and liability for a penalty under subsection (q) or (r) of section 685: https://www.nysenate.gov/legislation/laws/TAX/689.

N.Y. Comp. Codes R. and Regs. tit. 20 section 105.20(c) is the source of the recordkeeping obligation quoted here, requiring a person domiciled outside New York who maintains a permanent place of abode in the state and claims to be a nonresident to keep and have available adequate records substantiating that they did not spend more than 183 days in the state: https://www.law.cornell.edu/regulations/new-york/20-NYCRR-105.20.

New York State Department of Taxation and Finance, Nonresident Audit Guidelines (December 2021), is the source of the "Burden and Degree of Proof" chapter, the Bodfish v. Gallman clear and convincing standard, the "unequivocal acts" language, the Matter of Rudolph (dec’d) and Loretta Zapka (DTA No. 804111) quotation on persuasive arguments for both states, the statement that the Department bears the burden on an inbound change of domicile, the Matter of Richard and Carolyn Farkas (DTA No. 809927) quotation and the note that unaudited nonresident filings do not imply Departmental acceptance, the statement that the statutory residency standard of proof is also clear and convincing, the Matter of Julian H. and Josephine Robertson (DTA No. 822004) language on testimonial and documentary evidence, the weekend-days instruction to auditors, the warning that a lack of balance would create a heavy burden of proof for taxpayers, and the appendix summaries of Ausnit (212 AD2d 911, DTA No. 808144) and Allen (DTA No. 808589): https://www.tax.ny.gov/pdf/2021/misc/nonresident-audit-guidelines-2021.pdf.

Matter of Campaniello v New York State Div. of Tax Appeals Trib., 161 AD3d 1320 (3d Dept, decided May 10, 2018), is the source of the 169-day figure for 2007, the quoted statement that it was the petitioner’s burden to prove his change of domicile by clear and convincing evidence, the finding that the "No" box was checked on the 2006 and 2007 returns in response to whether he or his spouse maintained living quarters in New York State, and the disposition confirming the determination and dismissing the petition: https://caselaw.findlaw.com/court/ny-supreme-court/1895713.html.

Appeal of Stephen D. Bragg, 2003-SBE-002 (California State Board of Equalization), is the source of the statement that the Franchise Tax Board’s determinations of residency are presumptively correct and the taxpayer bears the burden of showing error, the rule that the burden as to a change of domicile is on the party asserting the change, and the holding that if doubt remains on the question of domicile after presentation of the facts and circumstances the domicile must be found not to have changed: https://ota.ca.gov/wp-content/uploads/sites/54/2022/03/03-sbe-002-Bragg_rs.pdf.

Cal. Code Regs. tit. 18, section 30219, is the source of the Office of Tax Appeals rule placing the burden of proof on the appellant as to all issues of fact, the preponderance of the evidence standard, the new-matter exception shifting the burden to the respondent, and the requirement that the agency prove fraud or intent to evade tax by clear and convincing evidence: https://www.law.cornell.edu/regulations/california/18-CCR-30219.

California Revenue and Taxation Code section 17016 is the source of the presumption that an individual who spends more than nine months of the taxable year in California is a resident, and of the statutory means of rebutting it with satisfactory evidence of a temporary or transitory purpose: https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=RTC&sectionNum=17016.

New Jersey Division of Taxation, 2025 Form NJ-1040NR instructions, is the source of the New Jersey definition of domicile, the statement that a domicile does not change until you move with the intent to establish a permanent home elsewhere and abandon the New Jersey domicile, the statement that moving for a long time does not change domicile if you intend to return, the permanent-home-plus-183-days test, and the filing chart showing that a New Jersey domiciliary maintaining a permanent home outside the state who spends more than 30 days in New Jersey files a resident return: https://www.nj.gov/treasury/taxation/pdf/current/1040nri.pdf.

Fla. Stat. section 222.17 is the source of the declaration of domicile procedure, including the language that a person who has established a Florida domicile "may manifest and evidence the same" by filing a sworn statement with the clerk of the circuit court for the county of residence: http://www.leg.state.fl.us/statutes/index.cfm?App_mode=Display_Statute&URL=0200-0299/0222/Sections/0222.17.html.

The Samuelsson v. Director, Division of Taxation holding, the New Jersey audit-aggressiveness rating and exit-audit trigger description, the New York exit-audit aggressiveness and 12-to-24-month audit duration, and the California statute of limitations position under R&TC section 19057(a) come from ResidencyIQ’s own dossier research, with underlying citations on the California, New York, New Jersey, and Florida residency guides.