Fax Form 5472 with pro forma 1120 to the IRS

The IRS fax number for Form 5472 with a pro forma Form 1120 filed by a foreign-owned U.S. disregarded entity is 855-887-7737 (toll-free). This is the only electronic filing channel: a foreign-owned single-member LLC cannot e-file this return.

HORIZANCE Fax converts your PDF to fax-standard TIFF Class F at the highest fax resolution (fine mode) and emails you a transmission report with page count and result code.

Fax Form 5472 + 1120 now — $2.49
Not ready to file by the April 15 deadline? Form 7004 extends your Form 5472 + pro forma 1120 to October 15 — it faxes to the same IRS number. File Form 7004 →

Where this form faxes

ScenarioIRS fax number
All foreign-owned U.S. DEs855-887-7737

IRS fax numbers change without notice. We re-verify our routing table against the current IRS form instructions, and the exact number your document was sent to is printed on your transmission report.

Numbers last verified against IRS sources: 2026-07-19 · Official IRS source

Deadline

Due with the pro forma 1120 by April 15 (calendar-year LLC); extendable to October 15 with Form 7004 sent to the same fax number.

Frequently asked questions

855-887-7737 — the dedicated toll-free fax line for Form 5472 attached to a pro forma Form 1120 filed by a foreign-owned U.S. disregarded entity. The same number accepts Form 7004 extension requests for the same entity.

No. A foreign-owned single-member LLC filing a pro forma 1120 with Form 5472 cannot use IRS e-file. The instructions allow only fax or mail to the Ogden service center — fax is the fastest and the only one with a same-day transmission record.

$25,000 per required Form 5472 per year, plus another $25,000 for each 30-day period of continued failure after IRS notification. A timely fax with a kept transmission report is your proof of filing.

The IRS instructions mention 300 DPI, but standard fax transmission tops out near 200 DPI (fine mode) — no fax service can literally send 300 DPI over the phone network. We render at the maximum fax resolution; start from a clean, high-contrast PDF for the sharpest result.

Yes — the pro forma 1120 requires the LLC's EIN. If you don't have one and have no SSN or ITIN, you can fax Form SS-4 to the IRS through us as well.

You receive an emailed transmission report with the destination number, date/time, pages transferred and the fax protocol result. With the certified-report option we also store it for 7 years.

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