The Nonresident Tax blog

Tax filing guides

Everything we've written on tax filing — plain-English, and written for founders building from outside the US.

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Tax filing

Form 5472 explained: what every foreign-owned US LLC must file

If your LLC has a non-US owner, this one form keeps you compliant with the IRS — even if you made $0. Here's what it is, who files it, and how we handle it.

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Tax filing

How to get a US EIN without an SSN or ITIN

You don't need a Social Security Number to get a US EIN. Here's exactly how the process works for non-resident founders — and how we handle it for you.

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Tax filing

2026 US tax deadlines for non-resident founders

A calm, plain-English rundown of the federal filing dates that matter for your US LLC or C-Corp in 2026 — plus how extensions work if you need more time.

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Tax filing

Form 5472 deadlines and extensions: when it's due, and what a late filing costs

Every Form 5472 deadline by entity type, how the automatic six-month extension works, and what the IRS penalty structure actually looks like if you miss the date.

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Tax filing

Related party transactions on Form 5472: what actually counts as reportable

Capital contributions, unpaid rent, a $500 loan — Form 5472 catches more than most foreign-owned LLC owners expect. Here's exactly what counts as a related party transaction, and what you can skip.

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Tax filing

How to get an EIN for your foreign-owned LLC (no SSN needed)

A step-by-step walkthrough of getting an IRS EIN for your foreign-owned US LLC — application methods, Form SS-4 field by field, and the compliance steps that follow.

Form 5472 and a pro-forma 1120 cover sheet clipped together inside an arched frame
Tax filing

Form 5472 and pro-forma 1120: the complete filing guide for non-resident owners

A full walkthrough of Form 5472 and the pro-forma 1120 for foreign-owned LLCs — who must file, what counts as a reportable transaction, the April 15 deadline, penalties, and how we handle it.

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Tax filing

ITIN for nonresident business owners: what it is and how to apply

A plain-English guide to the ITIN — who needs one, how Form W-7 works, how long it takes, and how we handle the application for you without mailing your passport.

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Tax filing

Small business tax guide for non-resident founders: deductions, deadlines, and what changed for 2026

A plain-English guide to running a US small business as a non-resident: the deductions worth claiming, what the 2025 tax law reset changed for 2026, and the planning moves that actually lower what you owe.

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Deadlines, deductions, and plain-English updates for non-resident founders — no spam.

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