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Letter 3164· Examination / audit

Letter 3164 — Third-party contact intent

Notification that the IRS plans to contact third parties (banks, employers, neighbors) about your tax liability.
irs.gov primary2026-05-09
Category
Examination
Urgency
Date on notice
Response window
see notice
Key form
—

Respond by the date printed on your individual notice.

Why the IRS sent this

IRS determination that third-party contact is needed to resolve a tax matter.

Response window

Notice received
Respond bydate on your notice

The IRS detail page for Letter 3164 does not state a fixed day count. The response-by date is printed on your individual notice — read the date at the top-right corner.

What to do

Required action

Respond to any outstanding IRS information requests directly to limit the need for third-party contacts. You may request a list of third parties contacted.

Appeal path

Informal — call the IRS

Informal — respond to outstanding requests. Taxpayer Advocate Service is available for systemic issues.

Notes from the primary source

Detail page states the contact period covered by the notice is "not more than one year."

Go deeper

Educational pillars for this notice

Calm-corrective

Only the IRS can resolve your notice

We are not a CPA firm, not a law firm, not an Enrolled Agent firm, and not affiliated with the IRS. We don't accept payments on your behalf, settle your debt, or call the IRS for you. What we do: explain what your notice means, point you to the right IRS form, cite the statute that authorizes the action, and surface the appeal path. Then you call the number on the notice, file the form, or hire a licensed professional.

Related notices

Likely next or sibling codes

Source

Verified against the official IRS detail page on irs.gov/individuals/understanding-your-letter-3164. Always re-verify against the IRS page before acting.