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Tax Law in Guam

This page covers tax law as it applies in Guam — the state and federal laws that govern it, filing deadlines, where to get help, and notable in-state decisions. For what tax protects generally, see the national overview.

Compiled from primary legal sourcesNot legal adviceHow we source this

Laws that govern tax in Guam

Federal law

  • Title 26 — Internal Revenue Code

    The U.S. Code title that houses these federal statutes.

  • Internal Revenue Code of 1986

    Codification of the federal tax laws. Title 26 of the U.S. Code, comprising all federal tax statutes.

  • Tax Cuts and Jobs Act of 2017

    Most significant tax legislation since 1986. Reduced corporate tax rate from 35% to 21%, restructured international tax (GILTI, BEAT), nearly doubled the standard deduction, cap…

  • Tax Reform Act of 1986

    Most significant tax-code overhaul since the modern income tax began. Reduced top rate to 28%, eliminated many shelters. Recodified Title 26 as the IRC of 1986.

Where to go & how to get help

Government agencies and non-profit legal-help organizations for tax in Guam.

Not legal advice. State-specific statutes, deadlines and procedures are being sourced and will appear here.