Residency & Relocation — United States

Why state residency is the dominant US lever

Federal tax is the same regardless of state. State tax is not. The difference between California (13.3% top income tax; cap gains at ordinary rates) and Florida, Texas, or Nevada (zero income tax) is 13.3% of taxable income and capital gains annually. On a $10M income year, that’s $1.3M. On a $100M liquidity event, that’s $13M.

For US households with meaningful income or anticipated capital gains, the state residency decision is almost always the largest single tax lever. It is also the lever most within the household’s control. A household cannot change federal rates; they can change where they live.

The state landscape

Zero income tax states. Florida, Texas, Washington, Nevada, Tennessee, South Dakota, Wyoming, Alaska, New Hampshire (only dividends and interest taxed historically; phased out). For capital-gains-heavy households, Washington now imposes 7% on capital gains above $250,000 (with specific exclusions). Texas and Florida are the dominant relocation destinations.

Aggressive high-tax states. California (13.3% top), New York (10.9% top plus NYC 3.876%), New Jersey (10.75% top), Oregon (9.9% top), Minnesota (9.85% top), Hawaii (11% top), Iowa (after scheduled reductions). Each aggressively audits departures.

Moderate states. Many states have moderate state income tax (3–6% top rates). For households with substantial income, these can still create multi-million-dollar differences over a decade compared to zero-tax states.

State estate tax states. Sixteen states plus DC impose their own estate tax. Oregon ($1M exemption), Massachusetts ($2M), Washington ($2.193M), Illinois ($4M), New York ($6.94M with cliff provision), and others. Dying in Massachusetts versus Florida on a $20M estate makes over $2M difference in state-level estate tax alone.

Specific state features.

• Florida. Homestead exemption provides unlimited creditor protection on primary residence. Zero income tax. No estate tax. Asset protection-friendly generally. Florida residency is the dominant US HNW relocation destination.
• Texas. Zero income tax. Robust homestead protection. No estate tax. Franchise tax can apply to certain business entities. Austin, Houston, Dallas different cultural feels.
• Nevada. Zero income tax. Strong asset protection for trusts (domestic asset protection trust provisions). Specific business-friendly environment. Las Vegas and Reno the main markets; Nevada residency often pairs with extended time in other states.
• Washington. Zero income tax on wages; 7% capital gains tax on gains above $250,000 with specific exclusions (real estate, certain business sales, retirement accounts). For capital-gains-heavy households, Washington is less attractive than historically.
• Tennessee. Zero income tax (the “Hall tax” on dividends and interest was phased out). Growing as a relocation destination.
• Wyoming and South Dakota. Zero income tax; strong trust jurisdictions. Combined with low population density, favorable for families seeking quieter lifestyle plus tax benefit.
• California. 13.3% top income tax. Aggressive audit posture on departures. Community property state. Prop 13 property tax benefits reward long ownership. Aggressive enforcement of residency rules.
• New York. High income tax. Aggressive audit posture. NYC-specific municipal tax adds further layer. “183-day rule” plus “permanent place of abode” test for New York residency.
• New Jersey. High income tax (including the “millionaires’ tax” at the top). Estate tax plus inheritance tax. Specific rules around departure.

The audit reality

California, New York, New Jersey, Massachusetts, and Minnesota all operate active residency audit programs targeting households claiming departures to zero-tax states. The audits look at multi-year patterns and typical focus points:

Physical presence. Where were you actually on specific days. Cell phone records, credit card transactions, frequent-flyer records, travel records are all subpoenaed. Sloppy tracking is consistently fatal.

Permanent place of abode. Do you maintain a primary home in the origin state? New York’s “permanent place of abode” test is specifically aggressive, maintaining a New York residence (even a small apartment) plus 183+ days in New York triggers New York residency regardless of other ties.

Family presence. Where do your spouse and children live. Are children enrolled in origin-state schools. Does family remain in origin-state housing.

Business and professional ties. Where is the operating business. Where are the advisors. Where are the bank accounts. Where is the doctor.

Vehicle and license registration. Driver’s license. Vehicle registration. Voter registration. Small items that matter.

Estate planning documents. Wills, trusts, powers of attorney that continue to name origin-state advisors or reference origin-state addresses.

Audit defense. Largely documentary. Moves that produce clean, contemporaneous documentation defend well; moves that require reconstruction years later defend poorly.

The anatomy of a clean US state move

For a pre-liquidity or high-income household executing a meaningful state change:

18–24 months before the target year. Begin structural preparation. Engage specialized counsel (typically in both origin and destination states). Review existing entities, trusts, and professional relationships for transition implications.

12–18 months before. Acquire or lease primary residence in destination state. Begin establishing specific ties, driver’s license, voter registration, vehicle registration, bank accounts. Move healthcare relationships.

9–12 months before. Family transition. Spouse’s professional and social relationships. Children’s school enrollment if applicable. Concrete life infrastructure in destination.

6 months before. Sell, rent, or restructure origin-state primary residence. Transfer estate planning documents to reflect new residency. Update all advisor relationships to destination-state advisors (or at least add destination-state counsel).

At the transition. Formal change of domicile: driver’s license, voter registration, final state tax return in origin state. Destination state tax registration.

In the target year. Maintain contemporaneous day-count records. Keep destination-state utility bills, leases, club memberships, and other documentation that establishes presence. Limit origin-state days to safe margins (ideally below 120 days, well below any residency threshold).

First two years after. Audit defense is ongoing. Clean destination-state documentation accumulates. Occasional visits to origin state for business, family, or personal reasons are normal; extended stays are audit flags.

The concrete friction points

Primary residence sale vs. rental. Selling the origin-state residence is cleaner for audit defense but creates a capital gain (subject to §121 exclusion if qualifying). Renting can preserve the exclusion but maintains a physical presence the auditor will scrutinize.

Operating business location. A founder with an operating business in California who claims Florida residency has a fundamental mismatch. Options: relocate the business (often impractical), restructure personal income flows, or reconsider the residency claim.

Spouse who doesn’t want to move. The split-residency problem. Spouse in California; founder in Florida. State tax authorities generally treat a married couple as residing together; split claims face significant scrutiny.

Children in origin-state schools. Particularly complex for mid-school-year moves. Pre-move transition planning minimizes this; mid-year moves are harder to defend.

Advisor transitions. Tax attorney, estate attorney, wealth manager, private banker all in origin state. Maintaining these relationships is fine; claiming residency elsewhere while all professional infrastructure remains in origin state is a significant audit weakness.

Business entity state. An LLC or S-corp formed in origin state, with personal residency in destination state, creates specific tax complexity. Entity restructuring often part of a clean residency move.

State tax credits on realized gains. Some states apply tax credits for taxes paid to other states on specific income. Interaction affects the net benefit calculation.

Specific state-to-state patterns

California to Florida. The largest US residency flow. Extensive infrastructure on both sides. Specialized counsel in both states; concrete playbooks for execution. Typical timeline 12–18 months for clean execution.

California to Texas. Similar flow, typically Austin or Houston. Tech-sector founder flow particularly strong to Austin. Texas franchise tax considerations for operating businesses.

California to Nevada. Geographic proximity reduces some friction. Specific attention to Nevada’s domestic asset protection trust provisions often part of the planning.

New York to Florida. Long-standing flow. New York residency audits particularly aggressive; documentation discipline more important than in most state-to-state moves. Often combined with trust situs changes (from New York to South Dakota or Delaware).

New Jersey to Florida. Similar to New York pattern.

Illinois to Florida or Tennessee. Growing flow as Illinois estate tax and general tax climate drives relocations.

Massachusetts to New Hampshire. Proximity-based; specific planning around domicile versus residency given New Hampshire’s historical tax pattern.

Multi-state lifestyle. Households maintaining homes in multiple states, with primary tax residency deliberately structured. Requires careful coordination; typically involves explicit day-counting discipline.

Specific residency rules worth knowing

New York’s 183-day rule plus “place of abode” test. An individual is a New York resident if either (a) domiciled in New York, or (b) maintains a “permanent place of abode” in New York and spends more than 183 days in New York in the tax year. The place-of-abode test is specifically aggressive, a small Manhattan apartment plus 184 days creates New York residency regardless of domicile.

California’s Safe Harbor and residency factors. California uses a facts-and-circumstances test with specific factors (home, vehicle, voter registration, etc.). A “safe harbor” exists for taxpayers away from California for 546+ consecutive days under an employment-related contract with specific conditions.

Community property implications. The nine community property states include California, Texas, and Nevada, among the most common US HNW states. Moving between community property and common law states creates specific planning complexity for marital property characterization.

State estate tax “throwback.” Some states apply estate tax to properties or trusts regardless of current residency if specific connections existed previously. Requires pre-move review of all trust structures and property holdings.

International moves from the US

Expatriation tax. Renouncing US citizenship triggers IRC §877A, a deemed sale of all worldwide assets at fair market value. For “covered expatriates” (wealth or income above specified thresholds), the tax can be significant. Gifts or bequests from covered expatriates to US recipients are also subject to additional tax.

Green card holders. Long-term green card holders (8+ years) are subject to the same expatriation tax regime on surrender of the green card.

Ongoing US tax obligations. US citizens remain subject to US taxation on worldwide income regardless of residency. Only citizenship renunciation (or loss of green card for non-citizens) ends US tax obligation.

Treaty planning. For US citizens living abroad, foreign earned income exclusion (FEIE) and specific treaty provisions may reduce but not eliminate US tax. Double taxation is a real risk without careful planning.

FBAR and FATCA compliance. Foreign financial accounts require FBAR filings above $10,000 aggregate. Form 8938 requires additional reporting. Penalties for non-compliance are punishing.

Common US residency failure modes

The “Florida condo” audit failure. Establishing Florida residency by buying a condo, while maintaining NY primary residence and NY business. Fails audit uniformly.

Incomplete family move. Principal moves; spouse and children remain in origin state. New York and California specifically treat family presence as a strong indicator of domicile.

Days not tracked contemporaneously. Reconstructing days 18 months later during audit is difficult. Real-time day tracking using dedicated apps or calendars is standard practice.

Estate planning documents not updated. Wills, trusts, powers of attorney that continue to reference origin-state addresses or name origin-state advisors.

Advisor relationships not transitioned. All professional infrastructure in origin state. At minimum, destination-state counsel should be engaged during the transition.

Over-optimization through technical structures. Attempts to claim residency in a zero-tax state while continuing to operate substantially in origin state. Sophisticated audit programs specifically target these patterns.

Business entity state mismatch. LLC in origin state, individual in destination state, operational reality in origin state. Various combinations of these create specific audit vulnerabilities.

Where to go deeper

State residency is an area where peer conversation adds unusual value because the specific audit experiences in high-tax states are shared primarily through private networks. TIGER 21 and Long Angle members have extensive experience with California, New York, and New Jersey departures. For specific state moves, engaging specialized counsel (tax attorneys focused specifically on state residency audit) is typically the most consequential advisory engagement. See also Tax Strategy, US for the broader tax architecture, Estate Planning, US for the state estate tax layer, and Post-Liquidity Planning, US for pre-sale residency moves.