Delaware LLC Form 5472 Penalty (2026)

What exactly is the Form 5472 penalty, and why $25,000?

Form 5472 is an IRS information return that a foreign-owned, single-member US LLC treated as a disregarded entity must file every year. The duty comes from Internal Revenue Code section 6038A, and the same section sets the penalty: $25,000 for each year you fail to file a timely, complete, and accurate Form 5472, or fail to keep the records the rules require. Crucially, this is a fixed information-return penalty — it has nothing to do with how much money your LLC made, whether it had any revenue at all, or whether you owe any actual tax. A dormant LLC that earned nothing can still face the full $25,000.

The reason the number feels so disproportionate is that Form 5472 is an anti-avoidance tool. Congress wanted visibility into transactions between foreign owners and their US entities, so it attached a large, flat penalty to non-compliance to make the filing impossible to ignore. That design is also why the penalty hits so many non-resident founders by surprise: they formed a simple single-member LLC, never elected to be taxed as a corporation, assumed a disregarded entity has no federal return to file, and only learn about 5472 after a notice arrives.

The penalty was not always this size. The amount was $10,000 per year for returns due before 2018; the Tax Cuts and Jobs Act raised it to $25,000 for later years. If you are dealing with very old years, the applicable figure may differ, which is one reason to confirm the exact exposure on your specific notice rather than assuming a single number.

It also helps to understand what the penalty is not. It is not a tax bill, so it does not mean the IRS has decided you owe income tax — a foreign-owned LLC with no US-connected income may owe zero tax and still face the full penalty purely for the missing paperwork. Conversely, paying the penalty does not satisfy the filing requirement; you still have to file the form. The two are separate. Founders sometimes assume that if they pay, the matter is closed, then face continuation penalties because the underlying return was never furnished. The goal of any resolution is therefore always to get the actual Form 5472 on file, not merely to clear a dollar figure.

Who actually has to file Form 5472 on a Delaware LLC?

The filing requirement applies to a reporting corporation that has a 25%-or-more foreign owner and at least one reportable transaction during the year. Since 2017, the rules treat a foreign-owned, single-member LLC that is a disregarded entity as if it were a domestic corporation for this purpose alone. In plain terms: if a non-US person owns 25% or more of a single-member Delaware LLC and there was any movement of value between the owner and the LLC during the year, Form 5472 is almost certainly required.

The transactions that trigger it are broader than many founders expect. They include not just sales and services but the capital you contribute to fund the LLC, money you draw back out, and loans in either direction. Even the amount you paid to form the company can be a reportable contribution. Because almost every new LLC has at least a funding transaction, a foreign-owned single-member Delaware LLC usually has to file from its very first year. Our Form 5472 guide walks through who is in scope in detail.

A few situations change the picture. A multi-member LLC is taxed as a partnership and files Form 1065 instead, not a pro forma 1120 with 5472. An LLC that elected to be taxed as a C corporation files a real Form 1120 and may file 5472 in a different context. The classic penalty trap is the simple single-member disregarded entity — the default, lowest-friction structure most non-residents choose without realising it carries this duty.

How does the penalty grow after the IRS sends a notice?

The first $25,000 is only the starting point. Under section 6038A(d), once the IRS mails a formal notice that you failed to furnish the required information, you have a window — generally 90 days — to comply. If you still have not filed after that 90 days, an additional $25,000 applies for each 30-day period (or part of one) that the failure continues. There is no cap built into the statute on these continuation penalties.

This is why ignoring a notice is the single most expensive mistake. A founder who owes one $25,000 penalty and does nothing for six months after the notice can see the figure multiply. The opposite is also true: responding inside the window — even just by filing the delinquent return and asking for relief — stops the continuation clock. The 90-day period is not a grace period to think about it; it is a hard deadline you act inside.

Can the IRS remove the penalty under reasonable cause?

Yes, and this is the main route to resolution. The statute itself says the penalty does not apply where the failure was due to reasonable cause and not willful neglect. You are not arguing the form was unnecessary — you are explaining why you could not file it on time despite acting in good faith. The IRS evaluates these requests on the specific facts, so the quality of your written explanation matters more than any magic phrase.

Facts that commonly support reasonable cause include: you genuinely did not know a disregarded single-member LLC had any US filing obligation (a very common, credible position for first-time non-resident owners); you relied in good faith on a formation service or accountant who failed to tell you about 5472; you experienced serious illness, a death in the family, or a natural disaster; or IRS processing delays affected your EIN or records. What rarely works is a bare assertion with no detail, or anything suggesting you knew and chose not to file — that points toward willful neglect, which defeats the relief.

Note that the long-standing IRS First-Time Abate administrative waiver, which clears certain penalties for taxpayers with a clean history, has generally not been available for the 5472 information-return penalty. So reasonable cause is usually the path, and it should be argued thoroughly rather than relying on a clean-record shortcut. A US CPA or enrolled agent who handles foreign-owned LLCs can frame the facts the way examiners expect.

How do I fix several years I never filed?

The instinct to wait and hope is the wrong one, because each unfiled year is its own $25,000 exposure that does not improve with age. The stronger move is a voluntary, proactive correction: prepare and file the delinquent returns for every open year before the IRS opens an inquiry. Coming forward on your own is treated very differently from being caught, and it is the foundation of a credible reasonable-cause argument.

For each missing year you prepare the same package you should have filed at the time — a pro forma Form 1120 with Form 5472 attached — and you attach a reasonable-cause statement to each one. The table below shows how the two main scenarios differ.

Whichever scenario you are in, file complete and accurate forms. A 5472 that is filed but substantially incomplete or inaccurate can be treated as a failure to file, so do not rush a sloppy submission just to show movement. Accuracy and a clear paper trail are what protect you.

What goes into a strong reasonable-cause statement?

A reasonable-cause statement is a short, factual letter — not a legal brief — that an IRS reviewer can read and believe. The most persuasive ones share a structure: they state who the taxpayer is and the years involved, explain plainly what happened and why the filing was missed, show that the taxpayer acted in good faith and exercised ordinary business care, and describe the steps taken to fix it and prevent recurrence.

Specifics beat generalities. Instead of “I did not know,” write when and how you learned of the obligation, what you reasonably believed at the time, who advised you, and what you did the moment you discovered the gap. Attach evidence where you can — emails with a formation provider, medical or travel records, your EIN issuance date showing how new the entity was. The goal is to make “reasonable cause and not willful neglect” the obvious conclusion from the facts you have laid out, not something the reader has to take on faith.

Is the 5472 penalty connected to my Delaware obligations?

No, and keeping these separate prevents a lot of needless worry. Form 5472 is a federal IRS matter. Your Delaware franchise tax is a state matter handled by the Delaware Division of Corporations. They are different agencies, different deadlines, and different penalties. A 5472 problem does not jeopardise your Delaware good standing, and a missed franchise tax payment does not create a 5472 issue.

For context on the state side: a Delaware LLC owes a flat $300 franchise tax due June 1, beginning the year after formation, with a $200 late penalty plus 1.5% interest per month if missed. There is no annual report for an LLC. (Those “authorized shares” and “assumed par value” calculation methods you may have read about apply only to corporations, never LLCs.) The point is that your federal 5472 calendar and your state franchise-tax calendar run independently — see our Delaware LLC taxes overview to keep both straight.

How do I make sure this never happens again?

Resolving the past matters, but the real fix is a system so the form gets filed every year without relying on memory. The mechanics are simple once you know them.

• Know your deadline. The pro forma 1120 with Form 5472 is due April 15. You can extend to October 15 by filing Form 7004 on or before the original due date — but the extension is only valid if filed on time.
• Keep transaction records as you go. Log every amount you put into or take out of the LLC, plus any loans, in the year they happen. Reconstructing this later is where errors creep in.
• Confirm you are in scope. If a non-US person owns 25% or more and there was any reportable transaction, assume you must file. When unsure, the safe default for a foreign-owned single-member LLC is to file rather than skip.
• Calendar it from day one. Set the reminder the moment the LLC is formed, not the following spring, so the first year — the one founders miss most — is covered.

Getting your EIN in place early also helps, because a clean EIN and consistent records make both the filing and any later relief request far smoother. If you bank with a US business account or run Stripe through the LLC, your statements double as the transaction record you will need.

When should I bring in a US tax professional?

For a single missed year you caught early, before any notice, many founders successfully prepare the delinquent pro forma 1120 with 5472 and a reasonable-cause statement themselves — the forms are short and the facts are usually clean. The calculus changes once real money and deadlines are on the line.

Bring in a US CPA or enrolled agent who specialises in foreign-owned LLCs when: the IRS has already assessed the penalty and a 90-day clock is running; you have several missed years stacking up; your reportable transactions are complicated; or a first reasonable-cause request was denied and you need to go to Appeals. Professionals know how examiners weigh reasonable cause, how to present the facts, and how to make sure the delinquent returns are complete enough that they are not themselves treated as failures. The fee is typically a fraction of a single $25,000 penalty. Everything here is general information and not a substitute for advice on your specific situation.

How does forming the entity correctly prevent all this?

Most 5472 penalties trace back to one root cause: the founder set up a foreign-owned single-member LLC without ever being told it carries a federal filing duty. The fix is to start with formation that treats ongoing compliance as part of the job, not an afterthought. When you form your Delaware LLC with us, the $25,000 form is on the calendar from day one — see exactly how that works on our how it works page.

Our service is a flat $397, all-inclusive, with the Delaware state filing fee already included. That covers the Certificate of Formation (filed in about 48 hours), the EIN application without an SSN (2 to 4 weeks for non-residents), a registered agent for year one, your operating agreement, US bank and Stripe application support, and compliance tracking that flags your Form 5472 and franchise-tax deadlines so the situation this page describes never starts. We serve founders from 40+ countries, and the recurring theme is the same: the penalty is avoidable, and it is far cheaper to file on time than to resolve a notice. For the full cost picture, see our Delaware LLC cost breakdown; for the form itself, our Form 5472 for Delaware LLCs guide goes line by line. Filing on time, every year, is the whole game.