The Compliance Deadline That Costs $25,000 If You Miss It

The typical "form a US LLC" guide ends the moment you have your EIN, as if the company were now finished and self-maintaining. It isn't. A US LLC is a thing you keep, not a thing you build, and the keeping has a calendar attached — one with penalties large enough to dwarf every setup fee you just paid. The most dangerous of them is a form almost no formation guide names, carrying a starting penalty of $25,000, due annually, owed even by a company that never made a single dollar.

If you formed a Wyoming LLC as a non-US founder — the setup this series walks through — this piece is the part that keeps it from quietly becoming a liability. Three obligations matter, one of them is genuinely expensive to miss, and one widely-repeated scare has actually been repealed. Let's get them straight.

Form 5472: the $25,000 filing nobody mentions

Here is the one that catches people. Any foreign-owned single-member LLC — an LLC with one owner who isn't a US person — must file Form 5472 together with a pro forma Form 1120 with the IRS every single year. Not "if you had revenue." Not "if you were profitable." Every year, unconditionally, even at zero revenue. A company that made nothing, spent nothing, and sat dormant still owes this filing.

The penalty for missing it is where casual assumptions get expensive. People hear "IRS penalty" and picture a modest late fee, or the $500-a-day figure that floats around other filings. Form 5472 is neither. The penalty starts at $25,000 — a single, one-time hit, not a per-day accrual — and then adds another $25,000 for every 30 days it stays unfiled after the IRS notifies you. Miss it, ignore the notice for a couple of months, and a dormant company with no income is staring at a six-figure bill.

Form 5472 is due at zero revenue, and missing it costs $25,000 to start. It is the single most important sentence in this entire series, and the one most LLC guides never write.

There's a second layer to 5472 that's easy to overlook: it requires you to track reportable transactions — every dollar that moved between you and the company. Capital you put in, distributions you took out, loans in either direction — all of it has to be recorded and reported. This isn't optional bookkeeping; the form specifically asks for these owner-company money flows. So from the day the LLC opens, keep a clean log of every transfer between your personal accounts and the company's. You'll need it, and reconstructing it a year later is miserable.

A trap worth naming: founders assume a dormant company has nothing to file, so they skip the year entirely. That assumption is precisely how the penalty lands. The 5472 obligation is triggered by ownership structure — foreign-owned, single-member — not by activity. A company that opened a bank account and then did nothing all year is exactly as obligated as one that ran a million dollars through it. "We had no revenue, so there was nothing to report" is the sentence that precedes the $25,000 notice.

The stakes here are exactly why this is the one area where DIY is a false economy. A tax professional who handles foreign-owned LLCs runs roughly $200–500 per year — trivial against a $25,000 exposure. Pay it. This is not the filing to learn on.

The BOI scare that no longer applies

Now the correction, because outdated fear is its own kind of tax. Guides written in 2024 and early 2025 warned that within 30 days of forming, you must file a Beneficial Ownership Information (BOI) report with FinCEN disclosing who owns the company — or face penalties of $500 a day. That rule caused real panic. It also, for US-formed LLCs, no longer applies.

On March 26, 2025, FinCEN issued an interim final rule that exempted domestic reporting companies — LLCs and corporations formed inside the United States — and their beneficial owners from the BOI reporting requirement. If you formed your LLC in a US state like Wyoming, you are not required to file a BOI report, and the $500-a-day threat you read about does not hang over you.

One important boundary on that relief:

• It's specifically for companies formed IN the US. A Wyoming LLC qualifies for the exemption.
• Foreign companies registered to do business in the US are a different case. If instead of forming a US LLC you registered an existing foreign company to operate in the US, the BOI rules may still reach you — verify your current obligation directly against FinCEN's BOI page rather than trusting either the old scare or this summary.

For the founder who formed a plain US LLC, the practical takeaway is: cross BOI off your worry list, but confirm it against the primary source if your structure is anything other than a straightforward domestic LLC.

The state report you still owe

Federal isn't the only calendar. Your state of formation wants an annual filing too, and it's cheap but not skippable. For a Wyoming LLC, the annual report is due March 1 each year, and costs roughly $60–100. Miss it and you accrue penalties; ignore it long enough and the state administratively dissolves your company out from under you — which quietly invalidates the bank accounts and payment processors tied to it.

This one is genuinely simple and genuinely DIY-able. Put March 1 on the calendar as a hard recurring deadline, file the short report, pay the fee, done. The danger with the state report isn't complexity — it's forgetting, because it only comes around once a year and nothing reminds you.

The same-day annual checklist

Because these obligations cluster in the first part of the year, the clean way to handle them is to treat annual compliance as one sitting rather than three scattered scrambles. Once a year, run the list:

• File Form 5472 + pro forma 1120 with the IRS — even at zero revenue. Hand this to your tax professional; don't improvise it.
• Reconcile reportable transactions — pull your log of every dollar in and out between you and the company for the year, so the 5472 is accurate.
• File the Wyoming annual report by March 1 and pay the ~$60–100 fee.
• Confirm BOI status — for a domestic LLC you're exempt post-March-2025, but if your structure is anything unusual, check FinCEN's page.
• Sanity-check any cross-border money movement against current rules, since tax law on international transfers keeps shifting.

The honest bottom line: forming the company was the easy, one-time part. Keeping it compliant is the recurring work, and the numbers involved are an order of magnitude larger than anything you paid to set it up. A $100 formation fee sits next to a $25,000 penalty for a missed 5472 — that asymmetry is the whole reason to take this seriously. Budget the $200–500 for a professional, calendar the March 1 state deadline, log your owner-company transfers as they happen, and the LLC stays an asset instead of a landmine. Skip it, and the cheapest company you ever formed becomes the most expensive.

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Part of the Vibe-entrepreneurs series on the solo AI founder's stack. Previously: Getting an EIN Without a Social Security Number and Wyoming vs. Delaware vs. California for a Solo LLC. See also Your First US Bank Card Without Setting Foot in America. More builder insights.