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Federal · Form 5471

Information return on a foreign company the company owns (S corporations and partnerships)

File Form 5471 with Form 1120-S or Form 1065 for each foreign corporation in which the company holds 10% or more, with the schedules its category of filer requires. The extension of the return extends it.

When
By the 15th day of the 3rd month after the fiscal year ends (March 15 for a calendar year).
Agency
IRS
Form
Form 5471
Applies to
S corporations, partnerships and LLCs taxed as partnerships in the United States, owning 10% or more of a company outside the US.
If missed
$10,000 per form per year, plus $10,000 for each month after an IRS notice, up to $50,000 more
Source
www.irs.gov, read October 22, 2026
J
Jay explains

An S corporation or partnership that owns 10% or more of a company organized outside the United States reports it every year on Form 5471, attached to its own return by the 15th day of the third month after the year ends. The form asks for the foreign company's balance sheet, income statement and transactions with the US owner, and the penalty is $10,000 per form whether or not any tax is due.

Next dates

For a calendar year company. Weekend and holiday dates are moved to the next business day, as the IRS does.

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Three answers to start. Refine it after.

An LLC's tax treatment decides which federal return it files. Choose the line that matches yours. Nonprofits are covered too.
Count everyone on payroll. An S corporation's working owners are employees: they are paid a salary.
A company based outside its state of formation is registered in both and files in both.
More about the company: other states, payroll, dates, abroad
Other states where you have employees or an office
Other states where you have employees or an office
Each one adds that state's registration, employer and tax filings. A state where you only keep inventory or make sales belongs under sales tax states below, not here.
Date registered in each other state
Optional. Some states key their report to the day you registered there rather than your date of formation; without it, the formation date stands in and the calendar says so.
States where you collect sales tax
States where you collect sales tax
Needed for states that key filings to the anniversary of formation.
Some taxes start at a revenue threshold.
Outside the United States
Each adds the FinCEN or IRS form that comes with it: the FBAR, Form 5472, Form 5471, Forms 1042 and 1042-S.

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