How to Establish Domicile in a No-Tax State

California, New York, and New Jersey have each audited former residents and won. The issue is almost never where you live now. It is whether you properly severed ties with where you lived before.

Domicile Is Not the Same as Residency

Domicile is your permanent home, the place you intend to return to whenever you are away. Residency is a physical presence test. You can be a statutory resident of a state you never intended to live in permanently, and you can fail a domicile change even after buying a house somewhere else.

High-tax states care deeply about this distinction because domicile controls which state taxes your worldwide income. If New York determines you are still domiciled there, it taxes everything, your salary, your investment income, your side business, regardless of where you physically spent the year.

The nine states with no broad-based income tax as of 2026 are Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. New Hampshire taxes only interest and dividend income for residents who received that income before 2025, with the tax fully phased out now. That makes it a clean zero for most new residents.

The Steps That Actually Move the Needle

State tax auditors use a point-based framework sometimes called the "closest connections" test. These actions, in rough order of weight, are what change the outcome.

Register to vote in the new state. Voter registration is the single most cited piece of evidence in domicile audits. Do it within 30 days of your move.

Get a new driver's license. Most no-tax states require this within 30 to 90 days of establishing residency. Florida requires it within 30 days. Do not let the old license sit in your wallet.

File a Declaration of Domicile. Florida, Nevada, and South Dakota all allow you to file a formal document with the county clerk declaring your new domicile. This creates a dated public record. Florida's form costs roughly $10 and is filed at the county recorder's office.

Update your estate planning documents. Revise your will, trust, and any healthcare directives to reflect the new state's law and address. Leaving a will that names a New York attorney and references New York law signals to auditors that nothing really changed.

Move your financial accounts and professional relationships. Change your primary bank branch address, update your brokerage accounts, and transfer your accountant, attorney, and primary physician to the new state. New York's audit guidelines specifically examine where your "primary professionals" are located.

Spend the days. New York uses a 183-day statutory residency test. California has no bright-line day count, but its Franchise Tax Board looks at days spent in-state alongside every other factor. Track your days with a contemporaneous log, not a reconstruction done after an audit notice arrives.

For retirees specifically, check our breakdown of the best states for retirees to avoid taxes, which covers how Social Security, pension, and investment income are treated across all 50 states.

What Your Old State Will Look For

High-tax states audit domicile changes aggressively when income is high enough to justify the cost. New York's threshold for a full residency audit is generally income over $100,000 in the year of the move. California's Franchise Tax Board has no published threshold and has pursued taxpayers with incomes well below that level.

Auditors will request credit card statements, cell phone location data, medical records, club memberships, and social media posts. They look for the pattern of your actual life, not your stated intentions.

The most common audit trigger is continuing to own a residence in the old state. You do not have to sell it, but you must be able to show that the new home is larger, more expensive, or more central to your daily life than the property you kept. Keeping a 4,000-square-foot house in Connecticut while claiming domicile in a 900-square-foot Florida condo is a losing argument.

If you have significant capital gains or investment income at stake, the capital gains tax by state breakdown shows exactly how much you save by getting the domicile right.

Use our state tax calculator to run the actual dollar difference between your current state and a no-tax alternative before you start the process.

Key Takeaways

• Nine states have no broad-based income tax in 2026. Florida and South Dakota have the strongest domicile infrastructure, including formal declaration filings that create dated legal records.
• New York audits domicile changes for filers above roughly $100,000 in income and will request cell phone location data, credit card records, and medical appointments to build its case.
• The three highest-risk mistakes are keeping a larger home in the old state, leaving your estate documents unchanged, and failing to register to vote within 30 days of the move.

Compare every state's full tax burden, including income, property, and sales taxes, at liveordiehere.com.