Form 5472 due date for a 2025 foreign-owned LLC packet
The 2025 calendar-year Form 5472 due date for foreign-owned U.S. disregarded entities, with the extension boundary and late-filing hard stop.
Summary
For a 2025 calendar-year foreign-owned U.S. disregarded entity, Form 5472 is attached to a pro forma Form 1120 and follows the Form 1120 due-date framework. The ordinary due date is April 15, 2026. If a timely Form 7004 extension was filed by that regular due date, the extended date used by this product is October 15, 2026.
A missed original or extended deadline is a hard stop, not a routine packet-preparation case.
| 2025 original due date | April 15, 2026Calendar-year Form 1120 timing. |
|---|---|
| Extended date | October 15, 2026Only if timely Form 7004 was filed. |
| Hard stop | Late filingNo reasonable-cause or penalty-abatement strategy. |
How the date is derived
The IRS Instructions for Form 5472 say a foreign-owned U.S. DE attaches Form 5472 to a pro forma Form 1120 by the due date, including extensions, of that Form 1120. The 2025 Form 1120 instructions generally use the 15th day of the fourth month after tax-year end.
What the product checks
The wizard asks whether the packet is for the current supported 2025 calendar year, whether the expected filing date is inside the ordinary or timely extended lane, and whether a timely Form 7004 was already filed if the user is past April 15, 2026.
What this tool prepares
When timing is clean, Form 5472 Desk prepares a self-review packet, pro forma Form 1120 cover checklist, mail/fax checklist, and annual passport. It does not submit the packet or confirm IRS receipt.
When to use a professional
Use official IRS guidance or a qualified U.S. tax professional if the due date was missed, the extension proof is unclear, the year is not the supported 2025 calendar year, the filing is amended, or an IRS notice has arrived.
Next steps
Form 7004 extension guide
Check the extension path before treating a post-April 15 packet as on time.
Late filing hard stop
Use this when the original due date passed without a timely extension, or the extended due date passed.
$25,000 penalty guide
Review why timing and record support matter before preparing a packet.
Common questions
When is Form 5472 due for a 2025 calendar-year foreign-owned LLC?
For the supported foreign-owned U.S. disregarded entity lane, the 2025 calendar-year ordinary due date is April 15, 2026. If a timely Form 7004 extension was filed, Form 5472 Desk uses October 15, 2026 as the extended date.
Can Form 5472 Desk fix a missed Form 5472 due date?
No. Late filing, amended filing, reasonable-cause strategy, penalty abatement, and IRS notices are outside scope.
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 checkerRelated guides
Form 5472 instructions for 2025 foreign-owned LLC packets
A guided reading path for the official IRS Form 5472 instructions, Form 5472 PDF, and 2025 pro forma Form 1120 context.
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.
Official sources for this guide
Last reviewed: .