The Income Side
New York's state brackets top out at 10.9 percent, and city residents add up to 3.876 more. The last dollars of a large income land near 14.8 percent before anything federal. Florida's constitution forbids a state income tax entirely. On recurring seven figure incomes, the annual difference funds the Florida house within a handful of years. That is why the move clusters around liquidity events, vesting schedules and retirement dates rather than resolutions. The savings only start when residency actually changes, and the dates deserve planning before the moving truck.
The Estate Side
The quieter number is the one families meet once. New York's exemption sits near $7.35 million this year, and its cliff is famous. Exceed the line by more than five percent and the state taxes the entire estate, not the excess. Florida levies no state estate tax at all. For families holding more than the exemption, the domicile decision becomes the largest single line in the estate plan. It also interacts with the homestead protections we covered in the homestead guide, which shelter the Florida residence itself.
The Part the Math Won't Do
New York does not wave goodbye. Residency audits examine where the days were spent and where the family, the doctors and the dog actually live. The 183 day arithmetic is only the opening question. Florida asks for its own commitment, from the homestead filing to the license to the true center of life. We walked through the mechanics in Becoming a Florida Resident, and the one sentence version is that the tax savings are earned by actually moving, not by addressing mail. The house anchors the whole case. That is why the purchase and the residency plan belong in the same conversation, with counsel on both ends of the move.
Bottom Line
The math is blunt: nearly fifteen points of income tax and an entire estate tax regime separate the two states, and Florida's side of the ledger is zero by design. What the math cannot do is move you. Residency is earned with days, documents and a genuine center of life, and the families who plan the move like a transaction keep the savings the spreadsheet promised.
For families running the numbers: decide the residency date first and let the closing serve it. The spreadsheet rewards the family that moves properly, and audits the one that almost did.
Rate anchors were verified in October 2026. New York's top state income bracket runs 10.9 percent with New York City resident rates up to 3.876 percent. New York's 2026 estate exemption sits near seven point four million dollars, with full estate taxation when an estate exceeds roughly 105 percent of it. Florida levies no state income or estate tax. Rates and thresholds change, and this piece is orientation, not tax advice. Every client's move runs with their own tax counsel.
The 183 day figure is the common statutory day count test. Domicile examinations weigh many factors beyond days.
New York State and New York City published tax schedules and estate tax guidance, as summarized by current practitioner sources.
Our homestead and Florida residency guides.
