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Official source methodology for Form 5472 Desk

The official IRS source baseline and review method used for Form 5472 Desk claims, hard stops, and packet wording.

By Yann LephayPublished 2026-06-10 · Last updated 2026-06-19

Summary

Form 5472 Desk uses official IRS pages, current IRS PDFs, and the IRS single-member LLC page as its source baseline. The product intentionally narrows claims to packet preparation for a clean foreign-owned U.S. disregarded entity and routes professional judgment away from checkout.

Claims are limited to official-source packet preparation, not advice or filing.

Review dateJune 19, 2026Source baseline for this MVP.
Primary sourceIRS Instructions for Form 5472Definitions, filing path, penalties, extension notes.
MethodHard-stop firstUnsupported facts block checkout.

Sources used

The source set includes the IRS Form 5472 page, Form 5472 PDF, Instructions for Form 5472, Form 1120 and its instructions, Form 7004 and its instructions, the IRS single-member LLC page, and TD 9796.

How claims are written

Copy says what the software prepares technically: a self-review packet, pro forma Form 1120 checklist, mail/fax checklist, and annual passport. It avoids claims of IRS affiliation, tax advice, legal advice, representation, or guaranteed penalty avoidance.

How hard stops are chosen

Hard stops cover anything requiring classification judgment, treaty or ECI analysis, transfer pricing, foreign corporation U.S. business status, complex related-party transactions, missing identity facts, notices, late filings, or professional representation.

Common questions

Does Form 5472 Desk file with the IRS?

No. It prepares a self-review packet and checklist. The user reviews, signs where required, and files through the official IRS mail or fax path.

Does this product provide tax advice?

No. It is self-help software for a narrow packet-preparation lane. Treaty positions, ECI analysis, transfer pricing, reasonable cause, notices, and representation are outside scope.

Run the strict Form 5472 checker

Check whether the facts fit the foreign individual, 100% single-member LLC, disregarded entity, current on-time packet lane before preparing anything.

Open checker

Related guides

Foreign-owned LLC Form 5472 filing guide

A narrow source-linked guide for foreign-owned single-member LLC owners checking the Form 5472 plus pro forma Form 1120 filing lane.

Form 5472 filing requirements for a foreign-owned LLC

Who must file Form 5472, how foreign-owned U.S. disregarded entity rules fit a single-member LLC, and where the Form 5472 Desk lane stops.

Can Form 5472 be e-filed online for a foreign-owned U.S. DE?

A clear e-file answer for foreign-owned U.S. disregarded entities, with the safer route back to the IRS mail/fax checklist.

Official sources

IRS About Form 5472IRS page for the current Form 5472 revision and official instructions; page last reviewed March 30, 2026. Official source reviewed for this MVP on June 19, 2026.IRS Instructions for Form 5472Official instructions define reporting corporations, foreign-owned U.S. disregarded entities, filing method, pro forma Form 1120, Form 7004 extension handling, and $25,000 penalties. Official source reviewed for this MVP on June 19, 2026.IRS Form 5472 PDFOfficial form used for the information return attached to the pro forma Form 1120 packet. Official source reviewed for this MVP on June 19, 2026.IRS About Form 1120Official Form 1120 page; the Form 5472 DE lane uses a pro forma Form 1120 cover. Official source reviewed for this MVP on June 19, 2026.IRS Instructions for Form 1120Official corporation return instructions used for regular due-date timing: generally the 15th day of the 4th month after tax year end. Official source reviewed for this MVP on June 19, 2026.IRS About Form 7004Official page for automatic extension requests for certain business income tax, information, and other returns. Official source reviewed for this MVP on June 19, 2026.IRS Instructions for Form 7004Official extension instructions; Form 5472 DE instructions give special filing-channel rules for Form 7004. Official source reviewed for this MVP on June 19, 2026.IRS single-member LLC pageIRS page explaining single-member LLC disregarded-entity classification basics and EIN context. Official source reviewed for this MVP on June 19, 2026.TD 9796 foreign-owned disregarded entity regulationsIRS Internal Revenue Bulletin item treating a domestic disregarded entity wholly owned by a foreign person as separate for limited section 6038A reporting and record-maintenance purposes. Official source reviewed for this MVP on June 19, 2026.

Last reviewed: June 19, 2026.