Moving from New York to Florida: A Tax Guide

New York to Florida is the single most traveled tax migration corridor in the country. The reasons aren’t complicated: New York has some of the highest combined income taxes in the world, Florida has none. For the right person, the move is worth hundreds of thousands of dollars a year.

But New York doesn’t let high earners leave quietly. The state runs one of the most aggressive residency audit programs in the country, with a dedicated bureau whose sole purpose is to prove that people who claimed to move never really did. They have subpoena power, years of institutional knowledge, and a financial incentive to find problems.

Here’s what the move actually saves, what New York will do about it, and what you need to do to make it stick.

What You Actually Save

New York’s income tax situation is unusually punishing because it layers two taxes on top of each other: state income tax and New York City income tax. Move away from both, and the savings are substantial.

New York State income tax tops out at 10.9% on income over $25 million, but reaches 9.65% at $2.155 million. For most high earners, the effective marginal rate is somewhere between 8.82% and 10.9% depending on income.

New York City income tax adds another 3.876% for residents at the top bracket.

Florida income tax: 0%.

That gap, at meaningful income levels, looks like this:

Annual Income	Combined NY+NYC Tax (est.)	Florida Tax	Annual Savings
$500,000	~$62,000	$0	~$62,000
$1,000,000	~$130,000	$0	~$130,000
$2,000,000	~$263,000	$0	~$263,000
$5,000,000	~$663,000	$0	~$663,000

These are rough estimates. The actual numbers depend on your deductions, entity structures, pass-through income, capital gains characterization, and other factors. But the order of magnitude is right: at $2 million in income, successful Florida domicile is worth a quarter million dollars per year. At $5 million, it’s closing in on $700,000.

New York also has an estate tax. The state exemption is $7.16 million (2025), and the top rate is 16%. For estates above the exemption, that is a meaningful consideration on top of the income tax calculus.

What New York Does About It

The New York Department of Taxation and Finance has a dedicated Nonresident Audit Bureau. It does not perform general tax audits. Its entire function is identifying high earners who claimed to leave New York and determining whether they actually did.

This bureau has been operating for decades. They have refined playbooks, deep institutional knowledge, and significant resources. When you stop filing as a New York resident after years of paying seven-figure tax bills, they notice.

What They Look For

The foundation of any New York residency audit is a simple question: where were you, day by day, for the tax year in question?

To answer that question, auditors don’t rely on what you tell them. They build an independent record from sources you didn’t know to worry about:

Cell phone records. Carriers log which towers your phone connects to throughout the day. A modern audit can place your phone in a specific county, often within a mile or two, for every day of the year. If you claimed to be in Florida but your phone was pinging towers in Westchester County, that is documented.

EZ-Pass and SunPass records. Every time you pass through a toll, the time and location are logged. New York auditors routinely subpoena these records. Frequent tolls on the Triborough Bridge don’t look good if you’re claiming to live in Palm Beach.

Credit and debit card transactions. Every purchase is timestamped and geolocated. A Monday morning coffee at your usual spot on the Upper West Side is a day in New York.

Airline records. Flight manifests and frequent flyer data show departure cities. Repeated JFK and LGA departures build a picture of where home base actually is.

Social media. Auditors look at check-ins, tagged photos, and location metadata. A photo posted at a Manhattan gallery opening on a day you claimed to be in Boca Raton is exhibit A.

Doorman and building staff interviews. This is the one that surprises people. New York auditors have been known to interview doormen, parking garage attendants, and building staff to establish how often you were actually at your Manhattan apartment. These witnesses don’t have any loyalty to your tax strategy.

The state can request records going back several years. The standard statute of limitations is three years, but that extends to six for substantial underreporting, and there is no limit in fraud cases. Your defense will need to cover whatever period they want to examine.

The Statutory Resident Trap

Here’s the piece that catches the most people off guard.

New York uses two separate tests to determine whether you owe New York income tax. Most people understand the domicile test — where is your permanent home, your legal residence, the place you intend to return to? Establish Florida domicile and you’re not a New York domiciliary anymore.

But New York also has a statutory resident test. Under this test, you can be taxed as a full New York resident even if your domicile is Florida, if you meet two conditions:

You have a permanent place of abode in New York — a home, apartment, or other dwelling you maintain and have the right to use.
You spend more than 183 days in New York during the tax year.

Notice that your domicile doesn’t matter under this test. If you keep your Park Avenue apartment and spend 184 days in New York, you owe New York tax as a statutory resident — even if your domicile is unambiguously Florida, even if you spent 181 days in Miami.

The statutory resident rule means that keeping a New York home and spending too much time in the city is a separate, independent trap from the domicile question. Many people who successfully establish Florida domicile still get caught by this rule because they didn’t manage their New York day count carefully enough.

The practical implication: if you keep a New York property, you need to track your New York days with the same precision as your Florida days. The two are directly connected.

The Convenience-of-the-Employer Rule

Remote workers who moved to Florida for tax purposes run into a separate New York rule that is genuinely unusual.

Under New York’s convenience of the employer doctrine, if you work remotely for a New York-based employer, the days you work from your Florida home can be treated as New York days — if New York determines that the remote arrangement is for your convenience rather than a business necessity of the employer.

The logic is that you chose to work from Florida, but your employment relationship is still fundamentally rooted in New York. New York taxes the income as if you were there.

This rule does not apply to every remote worker. If your employer closed your New York office, or required you to work from another location, those days may not be attributed to New York. But if you simply prefer to work from your Florida home while maintaining a New York employer, the doctrine can apply — and it means your Florida days at your laptop may not be the Florida days you think they are.

If you have a New York employer and are counting on Florida days that involve remote work, this is something to discuss with a tax attorney who knows this rule well.

The NY Home You Want to Keep

The hardest situation in New York-to-Florida tax planning is the person who genuinely loves their New York apartment and wants to keep it.

You are allowed to own property in New York as a Florida resident. There is no rule that says you must sell your Manhattan co-op. But keeping it creates two distinct problems.

First, it gives auditors a permanent place of abode to point to — triggering the statutory resident analysis and putting your New York day count under scrutiny.

Second, it complicates the domicile analysis. If you have a 4,000 square foot apartment on Central Park South and a 2,500 square foot condo in Naples, auditors will look at which property looks more like your home. Size, furnishings, personal possessions, the quality and use of each space — all of it factors into the picture of where you actually live.

If you keep the New York property, a few things matter:

Make your Florida home clearly larger and better. The Florida home should be the better property in every measurable sense — bigger, more personally furnished, with your family’s possessions, valuables, and significant belongings.

Use the New York property like a hotel. Keep it minimal. Don’t store irreplaceable items there. Don’t make it the place where the things that matter most to you are kept.

Count your New York days carefully. This is not optional. If you’re at risk of tripping the statutory resident threshold, you need to know before you book your next trip north.

Get the opinion of a specialist. Attorneys who practice specifically in New York domicile law can help you structure this in the way that best protects you.

The Practical Timeline

Moving your tax residency from New York to Florida is not a one-day event. Done properly, it unfolds over several months.

Day one: establish the Florida home. Before anything else, you need a real Florida address — not a family member’s place, not a vacation rental. A home you own or lease under your name.

Early weeks: the paperwork layer. Florida driver’s license. Florida vehicle registration. Voter registration change. Declaration of Domicile filed with your county clerk. These items are the table stakes of any residency claim and they need to happen promptly.

First few months: the financial and professional layer. Update your brokerage, banking, and financial accounts. Have your estate attorney update your will, trust documents, and powers of attorney to reflect Florida law and your Florida domicile. Change your address with the Social Security Administration.

Ongoing: the life layer. Find a Florida primary care physician, dentist, and other regular medical providers. Join a Florida club, civic organization, or community. Transfer or resign memberships in New York-based organizations where practical.

The entire year: the day count. From the moment you claim Florida residency, the count matters. Know where you are, track it consistently, and understand your New York day exposure if you keep property there.

The file you build during this process — documenting each step with dates and evidence — is the foundation of your defense if an audit comes years later.

NYC’s Additional Layer

One thing worth separating from New York State: New York City income tax.

If you are a New York City resident — living in the five boroughs — you pay city income tax on top of state income tax. The top city rate is 3.876%. At $1 million in income, that’s roughly $38,000 per year on top of your state bill.

Establishing Florida domicile eliminates both the state and city taxes, assuming you’re no longer a New York City resident. But the statutory resident rule applies at the city level as well: if you have a permanent place of abode in New York City and spend more than 183 days there in a year, you owe city tax even as a Florida domiciliary.

For people who specifically lived in Manhattan, Brooklyn, or another borough, the combined savings from escaping both taxes is the full spread — not just the state portion.

What This Move Is Not

It is worth being direct about what Florida tax residency does not do.

It does not eliminate New York tax on income sourced to New York. If you own rental property in New York, earn a salary from a New York employer, or have business income attributable to New York activity, you will still owe New York nonresident tax on that income. The rate is the same. What you eliminate is New York’s claim on your non-New York income — dividends, interest, capital gains from the sale of investments, Florida business income.

For people whose income is primarily investment-based — capital gains, dividends, interest, carried interest — the savings are close to the full gap. For people whose income is heavily tied to New York business activity, the picture is more complicated.

This is another area where a tax professional who knows both states well is essential before you make significant decisions based on expected savings.

A Note on Consulting a Tax Professional

Everything above is general information. It is not tax or legal advice.

New York domicile cases are complex, fact-specific, and high-stakes. The rules are not always intuitive. The interaction between the domicile test, the statutory resident test, and the sourcing rules for New York income requires careful analysis of your specific situation.

A CPA and attorney who specialize in interstate domicile issues — there are firms that focus specifically on this — are worth their fees before you make moves. A failed domicile challenge can mean years of back taxes, interest, and penalties that dwarf what you would have paid by staying.

The day count, however, is something you should manage yourself. It is the most concrete, documentable part of the analysis — and it is the part most people handle poorly.

Where Southbound Fits

The single biggest practical failure in New York-to-Florida tax moves is not the paperwork. Most people handle the paperwork adequately. The failure is the day count.

People claim Florida residency, spend the year living their lives, and then face an audit three years later with no reliable record of where they actually were. They reconstruct from old calendars, bank statements, and receipts — an exercise that produces imprecise results and looks like exactly what it is: a retroactive story.

Contemporaneous, independent, GPS-verified records are the gold standard. They exist. You didn’t create them after the fact. They’re hard to dispute.

Southbound does this passively. The app runs in the background on your iPhone, logging whether each day is spent in Florida or outside it, using iOS’s significant-location-change system. No manual check-ins. No diary entries. No discipline required beyond installing the app.

The core feature is the Departure Budget — one number that tells you exactly how many days you can still spend outside Florida and remain on track for 183+. If you’re keeping a New York apartment and need to monitor your New York days against the 183-day statutory resident threshold, that number is the thing you need to know in real time.

When an audit request arrives, you have a clean, exportable record of every day, backed by GPS data, stored in your own iCloud account. No Southbound servers ever hold your location history. It’s private, it’s yours, and it’s the kind of documentation that makes auditors move on.

The cost of losing a New York domicile audit is measured in years of back taxes, interest, penalties, and professional fees. The cost of starting your record today is your time to download the app.

This post is for general informational purposes only and does not constitute tax or legal advice. Interstate domicile and residency planning involve complex, fact-specific legal questions. Work with a qualified tax attorney and CPA who specialize in New York domicile issues.