About us
One filing, done properly.
Form5472 Prep exists to do a single thing well: prepare and file the IRS Form 5472 and pro forma Form 1120 that every foreign-owned US single-member LLC owes each year — and prove it reached the IRS. We are not a general tax firm and we don't try to be.
Why we built this
Most foreign founders discover Form 5472 the hard way — through a warning about a $25,000 penalty, often after they've already missed a deadline. The form isn't hard to fill in, but it's hard to fill in completely, correctly, and on time from outside the US, in a format the IRS accepts, using a channel (fax to the Ogden PIN Unit) most people no longer have.
Generic tax software won't file it. Most US CPAs rarely see it. So we built a service that does only this filing, for only this profile of taxpayer, and does it end to end — with an accountant reviewing every package and a fax receipt proving delivery.
How we work
Four steps, about fifteen minutes of your time
- 1
You answer a short intake
About a dozen questions about your LLC, its foreign owner, and year-end totals. No accounting software, no document gathering beyond what you already know.
- 2
We prepare the full package
Cover letter, pro forma Form 1120 stamped “Foreign-Owned U.S. DE”, Form 5472 (all parts), the Part V supporting statement, and a reasonable-cause statement if you're filing late.
- 3
An accountant reviews and you sign
A qualified tax accountant on our team reviews the package before anything leaves. You sign once, in your browser — no printing or scanning.
- 4
We fax it and prove it
We fax the signed package to the IRS Ogden PIN Unit and send you a timestamped fax-transmission receipt — your proof of filing if a penalty notice is ever questioned.
What we are — and what we're not
We are
- A form-preparation and filing-courier service for Form 5472 + pro forma 1120.
- Reviewed by a qualified tax accountant before every submission.
- Transparent, flat-fee, and up front about multi-year pricing.
- Built to give you a timestamped IRS fax receipt as proof of filing.
We are not
- A CPA firm, and we don't provide tax advice.
- A tool for multi-member LLCs or corporations (those file different returns).
- Responsible for the accuracy of the information you submit — that stays with you.
- Affiliated with the IRS or any government agency.
The guides on our blog are researched from primary sources — chiefly the IRS Instructions for Form 5472 and the Internal Revenue Code — and reviewed on a regular schedule; see our editorial policy. For how we handle your data, see Security and Data Retention. Questions? Email support@form5472prep.com.