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2025›Instructions for Form 1066›General Instructions

Where To File

2025 Inst 1066 (PDF) · 2026-10-03 edition · updated 2026-10-04 · United States

If the REMIC’s principal business, office, or agency is located in the United States, then file the return at:

Department of the Treasury Internal Revenue Service Ogden, UT 84201-0007

If the REMIC’s principal business, office, or agency is located in a foreign country or U.S. territory, then file the return at:

Internal Revenue Service P.O. Box 409101 Ogden, UT 84409

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▸Contents — 2025 Inst 1066 (PDF)

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