Government & Civic

Intermediate

8 min read 6 stepsMay 8, 2026Verified May 2026

How to Keep Two States Residency Requirements Straight

Plain-English guide for snowbirds on tracking days, filing the right paperwork, and avoiding tax problems when you live in two states.

At a Glance

Track Your Days in Each State

~55s

The first piece of advice every snowbird needs to hear is to start a day-by-day log the moment you cross a state line. Use a simple wall calendar, a notebook, or an app like Monaeo or TaxBird that uses your phone location to count days for you. For each day, write down which state you were in at midnight. Days where you traveled count toward the state where you slept that night. Keep receipts from gas stations, restaurants, and grocery stores in case you ever need to prove you were in a particular state on a particular day. A boarding pass, an EZ-Pass record, or a credit card receipt is the gold standard of proof. The standard threshold is 183 days, but a few states like New York and California count even partial days as full days, so check the rules of your northern state carefully.

Quick Tip

If you cross 200 days in your target state, you have a comfortable margin against bad weather, family emergencies, or a hospital stay that might force a longer return home.

Pick Your Domicile and Commit to It

~54s

Sit down with a tax preparer or a fee-only financial planner and decide which state will be your domicile. For most snowbirds, the answer is Florida, Texas, Tennessee, Nevada, South Dakota, or Wyoming because those states have no state income tax. Once you pick, every legal document should match. Update your driver's license to the new state at a Department of Motor Vehicles office, which requires an in-person visit and two proofs of address. Register to vote at sos.fl.gov for Florida or your new state's secretary of state website. Update your federal tax return to show the new address on the top of the form. Update your retirement accounts at Fidelity, Vanguard, or Schwab. Move your primary bank account if you bank with a regional bank that does not operate in your new state.

Warning

Keep your spouse on the same page. If one spouse is domiciled in Michigan and the other in Florida, you may have to file a Michigan tax return for the Michigan spouse's income. Joint domicile is the simpler path.

File a Florida Declaration of Domicile

~49s

Florida residents who want to make their domicile change formal can file a Declaration of Domicile under Florida Statute 222.17 at the county clerk's office in the Florida county where they live. The form is a single page that states your name, your Florida address, the date you became a Florida resident, and your previous state of residence. You sign it in front of a notary, which the clerk's office provides for a small fee. The filing fee is usually $10 to $15. While the declaration is not required by law, it is a strong piece of evidence in case Michigan or another former state ever questions your move. Make several certified copies because you may want to send one to your former state's tax agency along with your final part-year tax return.

Quick Tip

File the declaration on the day you formally make Florida your home, not later. The earlier the date, the stronger your evidence.

Update the Homestead Exemption on Your Florida Home

~50s

Florida offers a homestead exemption that knocks $50,000 off the taxable value of your primary residence. Filing the exemption requires that Florida be your permanent residence on January 1 of the tax year. Apply between January 1 and March 1 at your county property appraiser's website. For Lee County, that is leepa.org. For Pinellas County, it is pcpao.gov. For Sarasota County, it is sc-pa.com. You will need a Florida driver's license, a Florida voter registration card, a Florida vehicle registration, and the deed to the property. Once approved, the homestead exemption renews automatically every year as long as you keep the property as your primary residence. The Save Our Homes cap also limits annual taxable value increases to 3 percent, which can save thousands over time.

Warning

Do not claim a homestead exemption or a similar primary-residence tax break in your former state at the same time. States share data, and double-dipping can trigger fines and back taxes.

File a Part-Year Return in the State You Are Leaving

~54s

In the year you change domicile, you have to file a part-year resident tax return in the state you left. For Michigan, the form is Schedule NR attached to Form MI-1040. You report income earned while you were a Michigan resident and you stop reporting income earned after the move date. Attach a copy of your Florida Declaration of Domicile, your new Florida driver's license, and your voter registration card. Pay any final tax owed. In future years, you file no Michigan return unless you earn Michigan source income like rental income from a Michigan property. Many snowbirds keep their northern home as a vacation property and rent it out for part of the summer. Rental income from a Michigan property is taxed by Michigan even if you are a Florida resident.

Quick Tip

Hire a CPA for the year of the move. The savings on getting the part-year return right outweigh the fee, and a paper trail signed by a professional helps if there is ever an audit.

Keep a Residency Audit File

~42s

After the move, keep a folder titled Residency Proof for at least seven years. Inside, save your day-count log, your driver's license records, your voter registration card, your Florida Declaration of Domicile, your homestead exemption approval letter, your final part-year tax return, your bank statements showing the Florida address, your utility bills, and any doctor or pharmacy records that show a Florida provider. If a state ever opens a residency audit, you produce the folder and the case usually wraps up within a few weeks. Without records, an audit can drag on for a year and end with a tax bill plus penalties.

Warning

Do not destroy old records too soon. Michigan and several other states can audit residency for up to four years after the return is filed, and longer if fraud is alleged.

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Living part of the year in Michigan and part of the year in Florida sounds like the dream, and for thousands of retired seniors it is. The wrinkle is that each state has its own rules about who counts as a resident, and those rules drive your state income tax bill, your driver's license, your voter registration, your vehicle registration, and your homestead exemption. Get the rules wrong, and you can end up paying income tax to two states on the same retirement income, or losing a Florida homestead worth thousands of dollars in property tax savings.

The word states use is domicile. Your domicile is your true permanent home. You can own a house in any number of states. But you can only have one domicile at a time. Most states use a combination of two tests to figure out your domicile. The first is the day-count test, which asks how many days you spent physically in the state during the year. Most states use a 183-day threshold, meaning if you spent more than half the year inside the state, you are likely a resident for tax purposes. The second is the intent test, which looks at where you registered to vote, where you keep your driver's license, where your doctors and dentists are, where your church is, and where you say your home is on legal documents.

For a Michigan-to-Florida snowbird, the typical goal is to claim Florida as your domicile because Florida has no state income tax. To do that successfully, you need to spend more than 183 days in Florida, register to vote there, get a Florida driver's license, register your car there, file a Florida Declaration of Domicile, and use the Florida address on your federal tax return, your bank statements, and your retirement accounts. Skip any of those steps and Michigan can argue that you are still a Michigan resident and owe Michigan income tax on your pension, IRA withdrawals, and Social Security benefits if Michigan ever taxes them.

This guide walks you through tracking your days, picking a domicile, filing the right paperwork in each state, and keeping records that will hold up if a state tax agency ever sends a residency audit letter. The setup takes about a year because some changes, like a driver's license swap, have to happen in person during a stay. Once the foundation is in place, you only need to track days and renew documents on schedule.

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Official Resources

USA.gov — Government Services SSA — Social Security Benefits.gov IRS Free File

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