Guam Residency

No. Guam uses a mirror code under 48 U.S.C. section 1421i, meaning it applies the U.S. Internal Revenue Code word for word with 'Guam' substituted for 'United States.' You pay the same 10% to 37% federal brackets, just to Guam's Department of Revenue and Taxation instead of the IRS, which is a fundamentally different structure from Puerto Rico's or American Samoa's independently legislated tax codes.

No. A Qualifying Certificate sets up eligibility for a tax reduction, generally up to a 75% income tax reduction for up to 20 years in the standard category, but you must still independently satisfy the federal presence, tax home, and closer connection tests every year, and GEDA and DRT can review whether the underlying business and residency are genuine throughout the certificate term.

183 days in the tax year is the cleanest path, but there are four alternatives: 549 days across the current and two prior years with at least 60 days each year, 90 days or fewer in the U.S., $3,000 or less in U.S.-source earned income with more Guam days than U.S. days, or no significant U.S. connection at all. Meeting a presence prong alone is not enough; the tax home and closer connection tests must also be satisfied.

Your tax home is your regular or main place of business or employment, regardless of where you also own property or spend leisure time. The IRS's own Publication 570 example addresses this exact situation: a hotel worker employed seasonally in Guam but living the rest of the year in the CNMI was found to have a Guam tax home because that's where the regular place of business was, even though the CNMI held stronger personal and social ties.

You generally file Form 1040GU with Guam's Department of Revenue and Taxation reporting your worldwide income, and you're not separately liable to file with or pay the IRS for that year as long as the Guam return is properly filed and the tax fully paid. If you're not a full-year bona fide resident but have Guam-source income, you file with the IRS and may need to attach Form 5074 to allocate tax between the jurisdictions.

You can own it, but keeping it available as a livable home for your own use works against you on the closer connection test, which compares your Guam ties to the total of your U.S. and foreign ties. Renting it out at fair market value with limited personal-use days is a safer pattern than leaving it available for regular stays.

Yes, Guam levies real property tax, but at a low effective rate of roughly 0.5% to 1% of assessed value, among the lowest under the U.S. flag. There is no broad homestead exemption program comparable to Florida's or Puerto Rico's, though GEDA Qualifying Certificate holders can receive a full property tax exemption on an approved project for up to 10 years.

Guam has no general retail sales tax. Instead, businesses pay a 5% Business Privilege Tax (Guam's version of a gross receipts tax) on most transactions, along with a matching 5% use tax on imported personal goods. Qualifying Certificate holders can have most or all of this tax abated as part of their incentive package.

This is a common obstacle since most mainland payroll systems aren't set up to withhold for Guam's DRT. Push your employer to correctly register and treat your wages as Guam-sourced, and keep independent proof, lease, day counts, and pay records, that your work is actually performed from Guam, since a W-2 that still reflects mainland withholding contradicts a bona fide Guam residency claim.

No. Because Guam mirrors the federal Internal Revenue Code, retirement income, including Social Security, pensions, and 401(k) or IRA distributions, follows the same federal rules and thresholds as the mainland. The real Guam-specific benefit is the IRC section 931 exclusion for Guam-source income, which doesn't change how mainland-sourced retirement income is taxed.