Hire Employees in Guam

Two routes exist. Registering a Guam entity gives you direct employment, followed by registration with both the Guam Department of Revenue and Taxation and the Internal Revenue Service.

An Employer of Record removes that setup. The EOR is the legal employer, withholds Guam income tax, remits FICA to the IRS and issues W-2GU statements, while day-to-day direction stays with you.

The two-authority split is the defining administrative feature. A single payroll produces filings to two separate tax administrations, and getting the routing wrong is the most common error.

Guam operates a "mirror code". The Guam Territorial Income Tax replicates the US Internal Revenue Code with "Guam" substituted for "United States" wherever relevant, under the Organic Act of Guam.

That means the same tax brackets, the same standard deduction amounts, the same dependent exemptions and child tax credit amounts, the same itemised deduction rules and the same self-employment tax rates as the federal system, with 2026 single rates running from 10% to 37%. The tax is paid to Guam DRT rather than the IRS.

Employer payroll cost is 7.65%. 6.2% Social Security on wages up to $184,500 for 2026, plus 1.45% Medicare on all wages. Combined with the employee share that gives the familiar 15.3% FICA load.

There is no separate state-style income tax on top of the GTIT and, as of 2026, no permanent state-funded unemployment insurance tax, though one source describes Guam as participating in federally mandated unemployment programmes, so confirm the current position.

Break-even rule of thumb: EOR fees begin to exceed the running cost of a Guam entity somewhere between 15 and 25 employees. Model both, see EOR vs Entity for the framework.

Social Security is 6.2% from each side, on wages up to $184,500 for 2026. Medicare is 1.45% from each side on all wages, with no ceiling.

An additional 0.9% Medicare surtax applies to employees earning above $200,000 single, $250,000 married filing jointly, or $125,000 married filing separately. The employer does not match it.

Both are federal taxes paid to the IRS, generally reported quarterly on Form 941-SS, not to Guam DRT.

There is no US–Guam totalization agreement, because Guam participates in the US Social Security system directly. Guam wages are subject to FICA on exactly the same basis as mainland wages.

Where an employee has more than one employer in a year and excess Social Security tax is withheld, the excess is refundable by filing Form 843 with the IRS.

Any FUTA obligation should be confirmed under IRS Publication 80, which covers employment taxes in the US territories.

Gross annual salaries in US dollars. Employer cost is 7.65% until the Social Security ceiling, then 1.45%.

Benchmarks below are gross annual salaries in US dollars. Employer cost is 7.65% of wages, with the Social Security element capped at $184,500 for 2026.

One payroll, two authorities. Guam income tax withholding is reported and paid to the Guam Department of Revenue and Taxation; Social Security and Medicare are reported to the Internal Revenue Service on Form 941-SS.

Withholding uses Form GU-4, a Guam-specific equivalent of the federal W-4, based on income level and number of allowances.

Annual wages are reported on Form W-2GU rather than a mainland W-2.

Pre-tax deductions reduce both federal and territorial taxable income. For 2026 employees may contribute up to $24,500 to a 401(k) or 403(b), with an $8,000 catch-up at 50 or over and an enhanced $11,250 catch-up for ages 60 to 63 under SECURE 2.0.

Employees expecting to owe $1,000 or more may need to make estimated tax payments to Guam DRT, and separately to the IRS if subject to self-employment tax.

The Guam Territorial Income Tax applies the federal brackets and rates, administered by Guam DRT rather than the IRS.

The minimum wage is $9.25 an hour, effective 1 September 2021 under Public Law 36-001. Confirm the current rate before contracting, since it is periodically revised.

Guam applies United States labour standards through the territorial framework, so federal-style employment protections generally carry across.

The standard week is 40 hours, with overtime under the applicable federal and territorial rules.

Because the currency is the US dollar and the code mirrors the federal one, payroll systems built for the mainland adapt with relatively little change, the main adjustments are the forms and the filing destinations.

Contracts should record pay, hours, leave, notice and termination terms.

Register with both Guam DRT and the IRS before the first payroll run, and collect a Form GU-4 from each employee rather than a federal W-4.

Establish residency status early, since it determines both filing obligations and credit eligibility.

The standard week is 40 hours, with overtime rules following the territorial framework.

Because Medicare is uncapped, overtime and bonuses continue to attract the 1.45% employer charge at every salary level, even after Social Security has capped out at $184,500.

The additional 0.9% Medicare surtax on high earners falls on the employee alone, so overtime pushing someone past the threshold does not increase employer cost.

Guam observes United States federal holidays alongside territorial observances including Discovery Day in March and Liberation Day in July.

Guam observes United States federal holidays alongside territorial observances including Discovery Day in March and Liberation Day in July. Dates are set out below.

Guam participates directly in United States Social Security and Medicare, so retirement and health entitlements accrue on the same basis as mainland employment.

The credit position is where Guam residency bites. Bona fide Guam residents filing with Guam DRT cannot claim the federal Earned Income Credit, the Additional Child Tax Credit, the Credit for Other Dependents, or the American Opportunity Tax Credit.

For a family that would otherwise qualify for $7,000 or more in Earned Income Credit on the mainland, that is a significant financial consequence of Guam residency, and one worth raising explicitly with any candidate relocating from the states.

Under 26 U.S.C. §7654, the US Treasury covers over federal income taxes collected from military and federal civilian employees stationed in Guam, more than $111 million annually, to the Guam Treasury.

Termination follows the territorial employment framework, with federal-style protections applying through the mirror system.

Final pay including accrued leave is due on separation and must appear in both the Guam DRT withholding and the IRS Form 941-SS filing for the period.

The W-2GU must be issued for the year, reporting wages and territorial tax withheld.

Where an employee had more than one employer during the year, excess Social Security withholding is recoverable by them through Form 843 rather than adjusted by the employer.

IRC §931 is the critical provision. Bona fide residents of Guam with Guam-source income may exclude that income from US federal gross income.

Residents with income solely from Guam sources file only with Guam DRT. Those who also have US-source income, federal salary, mainland investments, must file both a Guam DRT return and a federal return.

Military members stationed in Guam do not become bona fide Guam residents. They retain their home state tax domicile and file with the IRS rather than Guam DRT, a distinction that matters considerably given the size of the military presence.

US income tax treaties apply through the United States rather than directly through Guam, so treaty positions taken by Guam-source entities rely on the US treaty network.

Misrouting filings between the two authorities is the most common error. Income tax withholding goes to Guam DRT; Social Security and Medicare go to the IRS. They are not interchangeable.

Using a federal W-4 instead of Form GU-4, or issuing a mainland W-2 instead of a W-2GU, produces the same problem in reporting.

Assuming military personnel are bona fide residents is wrong, they retain home state domicile and file with the IRS.

Note also that Guam residents lose access to four federal credits including the Earned Income Credit; that the minimum wage figure dates from 2021 and should be confirmed; and that sources differ on whether a permanent unemployment insurance tax applies.

Work backwards from the start date. An EOR hire takes two to four weeks; entity formation runs one to three months across two registrations.

Set up both filing channels before the first run. GU-4 and W-2GU to Guam DRT, Form 941-SS to the IRS.

Confirm the current minimum wage, establish residency status for each hire, and flag the credit restrictions to anyone relocating from the mainland.