IRS Form 8886 fax number (OTSA copy)

Where to fax the exact copy of an initial Form 8886, Reportable Transaction Disclosure Statement, to the IRS Office of Tax Shelter Analysis (OTSA).

Verified October 22, 2026Checked against Instructions for Form 8886 (10/2022), Initial year Form 8886 filers must file exact copy with OTSA.

IRS Form 8886 fax number (OTSA copy): which number to use
Who uses it	Office	Fax
The exact copy of an initial Form 8886 (and accompanying materials) only	Office of Tax Shelter Analysis (OTSA)	844-253-2553

Before you fax

This number is only for the exact copy of Form 8886; other submissions are not processed. Send one exact copy per fax, up to 100 pages.
You must also file the original Form 8886 with your tax return.

Last verified October 22, 2026

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