CP566· Filing compliance
CP566 — ITIN application needs more information
- Category
- Filing compliance
- Urgency
- Date on notice
- Response window
- 45 days
- Key form
- —
Respond by the date printed on your individual notice.
Why the IRS sent this
Incomplete or insufficient documentation submitted with the ITIN application.
Response window · stated on irs.gov
45 daysComplete and sign the response form, provide the requested documents (with English translations if needed), and mail to the address on the notice within 45 days.
What to do
Required action
Complete and sign the response form, provide the requested documents (with English translations if needed), and mail to the address on the notice within 45 days.
Appeal path
Informal — call the IRS
Informal — resubmit with corrected documentation.
Notes from the primary source
45-day window is stated on the IRS detail page.
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
- CP565Notification that the IRS has issued an Individual Taxpayer Identification Number (ITIN) for use…
- Letter 5071CIdentity-verification request: a Form 1040-series return was filed under your SSN or ITIN, and…
- CP59Notification that the IRS has no record of a prior-year personal tax return that you were…
- CP88The IRS is holding your current refund because one or more prior-year returns are missing and…
- CP215Notification that a civil penalty has been assessed against you.
- CP220JNotification to an applicable large employer that the IRS has charged an Employer Shared…
Source
Verified against the official IRS detail page on irs.gov/individuals/understanding-your-cp566-notice. Always re-verify against the IRS page before acting.