IRS in Helena

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Bring identity, Social Security proof, and residency documents

Contact details from the official IRS Local Office Locator (apps.irs.gov).

10 W. 15th St., Suite 2300Helena MT 59626

844-545-5640

Mon–Fri	8:30 a.m.–4:30 p.m.

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Full guide for Helena

Contact details from the official IRS Local Office Locator (apps.irs.gov).

10 W. 15th St., Suite 2300Helena MT 59626

844-545-5640

Mon–Fri	8:30 a.m.–4:30 p.m.

Book appointment Official website Online service Details

Content last checked: 8/11/2026 · Helena offices