Updated June 2026 · Reviewed by a Form 5472 specialist

The short answer
Form 5472 + pro forma 1120, prepared, reviewed, and filed. Catch-up years: $299 each.
Key takeaways
Filing Form 5472 with form5472.tax costs a flat $299, covering Form 5472 and the required pro forma Form 1120. The IRS charges nothing to file, but an error or missed deadline triggers a $25,000 penalty — which is the real cost of getting it wrong.
There are two numbers that matter. The first is what the IRS charges to file Form 5472: nothing. The form is free to download and free to submit. The second is what a mistake costs: a flat $25,000 penalty per form, per year, with no cap and no statute of limitations. The gap between those two numbers is why a correctly prepared filing is worth paying for — and why overpaying for it makes no sense either.
form5472.tax prices the work at a flat $299. That single fee covers your Form 5472, the pro forma Form 1120 that must carry it, specialist review, filing the correct way for a disregarded entity, and written confirmation. There is no separate “IRS submission fee,” no “active entity” surcharge, and nothing added at checkout — three line items competitors commonly use to push the real total higher.
The flat $299 fee is the lowest specialist price available. form5472.online charges $547 for the same filing, doola bundles it at $1,999/year, and Firstbase at $999–$1,499/year. We save you $248 to over $1,700 per year for identical IRS forms.
Every provider in the table below delivers the same end product to the IRS: a Form 5472 attached to a pro forma Form 1120. The difference is what they charge to prepare it. Formation services like doola and Firstbase are excellent at setting up companies but bundle the annual filing into expensive compliance plans. Dedicated filers like form5472.online charge a flat per-filing fee that is still nearly double ours.
| Provider | Their price | Our price | You save |
|---|---|---|---|
| form5472.online | $547 / filing | $299 | $248 |
| doola | $1,999 / year | $299 | up to $1,700 |
| Firstbase | $999–$1,499 / year | $299 | $700+ |
| Stripe Atlas | ~$800+ / year | $299 | $500+ |
| form5472.tax | $299 flat | — | — |
Source: published provider pricing, June 2026. Same Form 5472 + pro forma 1120 in every case.
The comparison is not about cutting corners. It is about not overpaying for a fixed-scope task. Filing one Form 5472 with a pro forma 1120 is the same amount of work whether you pay $299 or $1,999. See the side-by-side breakdown on our cost comparison page, or read why founders switch from doola or Firstbase.
The flat $299 includes Form 5472, the pro forma Form 1120 cover return, specialist review, filing with the IRS by fax or certified mail, and written confirmation. WhatsApp support before and after is included. Nothing is added at checkout.
| Included | In the price? |
|---|---|
| Form 5472 prepared for your LLC | Yes |
| Pro forma Form 1120 cover return | Yes |
| Specialist review before filing | Yes |
| Filing with the IRS (mail or fax) | Yes |
| Written confirmation of filing | Yes |
| WhatsApp support, 6 languages | Yes |
| Separate IRS submission fee | None — there isn't one |
| Active-entity surcharge | None |
Source: form5472.tax flat $299 pricing. Verified June 2026.
Because a foreign-owned single-member LLC cannot e-file, the filing is submitted by fax to 855-887-7737 or by certified mail to P.O. Box 149342, Austin, TX 78714-9342. We keep dated proof and send you written confirmation — your evidence of timely filing if the IRS ever asks.
Catch-up filing is a flat $299 per unfiled year. Three missed years cost $897 with us versus up to $75,000 in IRS penalties. Filing the delinquent Form 5472 and pro forma 1120 is what stops the $25,000 penalty from compounding.
If you missed prior years, each year is a separate Form 5472 and a separate $299. The math still overwhelmingly favours filing: the penalty is $25,000per unfiled form, per year, with no statute of limitations, so an old year never “ages out.” The only way to cap the exposure is to file the missing returns.
| Unfiled years | Cost to file with us | Penalty risk if ignored |
|---|---|---|
| 1 year | $299 | $25,000+ |
| 2 years | $598 | $50,000+ |
| 3 years | $897 | $75,000+ |
| 5 years | $1,495 | $125,000+ |
Source: form5472.tax flat per-year pricing; IRC §6038A(d). Verified June 2026.
See the full process on the catch-up filing page, or estimate your exposure with the penalty calculator.
The flat $299 covers a foreign-owned single-member LLC. C-corporations and multi-member LLCs file different forms (Form 1120 or Form 1065 with K-1s), so we quote those on WhatsApp. Message us with your entity type for a tailored price.
Our flat $299 is built around the most common situation: a non-resident who owns 100% of a US single-member LLC, which the IRS treats as a disregarded entity that files Form 5472 with a pro forma Form 1120. That is the entity behind the overwhelming majority of Form 5472 filings.
A foreign-owned C-corporation files a real Form 1120 with Form 5472 attached, and a multi-member LLCis usually taxed as a partnership filing Form 1065 with Schedule K-1s — both are more work than a single-member filing. Rather than publish a one-size price that doesn’t fit, we give a quick tailored quote. Message us on WhatsApp with your entity type and we’ll confirm the price and what’s included before you pay anything.
Price matters, but accuracy matters more because the penalty is $25,000. The right choice is the lowest price that still includes specialist review and correct filing. form5472.tax is the cheapest specialist option at $299 and still reviews every filing.
The danger with Form 5472 is not the fee — it is filing it wrong. Submitting only Form 5472 without the pro forma 1120, trying to e-file (impossible for a disregarded entity), missing the April 15 deadline, or using an outdated revision can each be treated as a failure to file and expose you to the full $25,000. The cheapest provider that still gets all of that right is the correct choice.
That is exactly how we price: $299 flat, with a specialist reviewing every return, the pro forma 1120 always included, and filing done the only two accepted ways for a disregarded entity. You are not trading accuracy for price — you are simply not overpaying for a fixed task. Ready to file? Start on the apply page, or confirm you even need to file with the 60-second qualifier.
Form 5472 and pro forma 1120, prepared, reviewed, and filed for a flat $299. Message us first if you'd like — we answer every question.