Moving from American Samoa to Michigan: Residency, Taxes, and What to Prove

No. Guam, the USVI, and the CNMI use a 'mirror code' that applies the U.S. Internal Revenue Code word for word with the territory's name substituted in. American Samoa has its own separate and independent tax system: A.S.C.A. section 11.0403 incorporates much of the Internal Revenue Code by reference, so the law is modeled on federal law, but rates and specific rules are set independently by the American Samoa Government, not automatically updated when Congress changes the federal code.

Yes. MCL 206.18 doesn't just create a presumption, it statutorily deems anyone who lives in Michigan at least 183 days in a tax year to be a resident domiciled in Michigan for that year. That's a stronger legal hook than the rebuttable presumptions some other states use, so if you're trying to avoid Michigan residency, staying meaningfully under 183 days matters more than in states where the threshold is just one factor among several.

Generally, no. Over 90% of American Samoa's land is communally owned by extended families under the matai (chief) system, and non-natives cannot acquire that land outright; transferring communal land to individual ownership requires Land Commission recommendation and Governor approval, or 30 years of adverse possession. Most non-native residents live under a long-term lease rather than owning a home, which changes what proof-of-residence documentation looks like compared to anywhere else in this guide.

It can, based directly on Michigan Supreme Court precedent. In Campbell v. Department of Treasury, a lifelong Michigan resident lost his Principal Residence Exemption for the year after he bought a second home in Arizona, even though he hadn't necessarily moved there full-time. The court read Michigan's PRE statute to terminate the exemption once you acquire another property that could function as a principal residence, so the exemption is a real cross-check risk the moment you close on an out-of-state home, not just once you've fully relocated.

If you're a bona fide American Samoa resident under the federal presence, tax home, and closer connection tests, your American Samoa-source income is generally exempt from U.S. federal tax. You do need to report worldwide income on your American Samoa return, and if you have non-American Samoa-source income above the filing threshold, you'll still need to file a U.S. return excluding the American Samoa income using Form 4563.

Treasury audits PRE claims for the current tax year plus the three immediately preceding tax years under MCL 211.7cc(8). That three-year lookback is Michigan's most concrete and commonly applied residency-adjacent enforcement tool, so if you've claimed the exemption while spending significant time at an out-of-state property, expect that history to be reviewable for several years, not just going forward.

No, and this is a common and costly misunderstanding. Publication 570 specifically requires that wages and cost-of-living allowances paid by the U.S. Government for services performed in American Samoa be included in gross income on both your U.S. and American Samoa income tax returns, regardless of whether you are a bona fide American Samoa resident. A foreign tax credit is available for the American Samoa tax paid on the same income to avoid double taxation, but the U.S. filing obligation itself does not go away.

Yes, and Michigan's own regulation says so directly. Mich. Admin. Code R. 206.5 lists the factors Treasury weighs in a domicile dispute, and specifically flags failure to pay income tax in the state you claim as your new domicile as very significant evidence against you. If you've told Michigan you moved to a no-income-tax state, that's consistent with your claim; if you claim to have moved to a state with an income tax but never actually filed or paid there, that gap is exactly what Treasury looks for.

People born in American Samoa are U.S. nationals, not automatically U.S. citizens, unless a parent was a U.S. citizen or they separately naturalize. This status allows a U.S. passport and mainland residency rights, but American Samoa residents, whether national or citizen, do not vote in U.S. presidential elections, and the territory's Congressional delegate is non-voting. Local territorial elections are separately administered by the American Samoa Election Office.

Yes. File Form MI-1040 together with Schedule NR, the Nonresident and Part-Year Resident Schedule, which splits your income between the Michigan-resident period, taxed in full, and the nonresident period, when only Michigan-source income is taxed. If you also live or work in a Michigan city with its own income tax, like Detroit, that city return is generally separate from the state filing.

183 days in the tax year is the cleanest path under the federal presence test, but there are four alternatives, including 549 days across the current and two prior years with at least 60 days each year. Meeting a presence prong alone is not enough; you also need to pass the tax home test and the closer connection test, which for American Samoa often weighs matai title, extended-family (aiga) ties, and lease-based home arrangements rather than conventional homeownership.

As of the 2026 tax year, Michigan has fully restored its retirement income exemptions: taxpayers born before 1946 have an unlimited public pension subtraction, and younger retirees can now subtract retirement and pension income on the same terms, effectively undoing the phase-out that applied to younger retirees between 2012 and 2023. Social Security is exempt for everyone regardless of birth year.