Using Firstbase for your US company? Put Form 5472 in context.

Firstbase helps with company formation and bundled startup compliance services, including LLC/C-corp formation, registered-agent service, premium mail or virtual address service, accounting, and federal/state tax filing. The section says its bundle is positioned for startups and foreign founders that want formation, compliance, and accounting in one place.

The facts file says Firstbase directly forms companies in Delaware and Wyoming, with foreign qualification into other states offered after initial formation.

A foreign-owned single-member US LLC has a federal Form 5472 + pro forma Form 1120 filing obligation each year if it had a reportable transaction. The obligation does not disappear because a formation platform filed the state paperwork, acted as registered agent, or helped open operational services.

Form 5472 is an IRS information return. It sits apart from state formation, state registered agent coverage, mailroom services, accounting subscriptions, and state annual reports.

Firstbase's tax-filing announcement states that the base Tax Package for foreign-owned LLCs includes one Form 5472 and one pro forma Form 1120. The facts file ties that to Firstbase One at $199/month, billed yearly at $2,388/yr, with Agent Autopilot, Mailroom Premium, Accounting, and Tax Filing bundled together.

Firstbase does not publish a standalone 5472-only public price in the facts file. For owners who do not need the full bundle, Form5472 Prep is a filing-only alternative: $149 Standard (ready in 5-7 business days) or $199 Express (within 3 business days) — identical filing, IRS fax delivery included.

Your first-year filing timeline starts when the LLC is formed, even if that happens partway through the year. The first Form 5472 covers formation through year-end whenever there was a reportable transaction, and the first wire used to fund the LLC bank account is usually enough.

Capital contributions, distributions, owner payments, and related-party reimbursements can all be reportable. The first wire used to fund the LLC's bank account is usually enough to create the first-year filing obligation.

Our wizard collects the filing facts in 12 questions: LLC details, foreign owner details, year-end assets, and related-party transactions. We prepare the pro forma Form 1120, Form 5472, the Part V supporting statement, and a reasonable cause statement when a late filing needs DIIRSP treatment.

An accountant reviews every package before we submit it. We deliver by fax to the IRS Ogden PIN Unit at +1-855-887-7737 and keep the timestamped fax receipt as transmission evidence. 100% money-back guarantee if we fail to submit.

If your Firstbase-formed LLC predates your current tax-filing coverage, or you only discovered the 5472 rule after one or more missed years, DIIRSP is the standard catch-up path for late international information returns. The key is to file the complete missed-year packages together with a reasonable cause statement before an IRS notice arrives.

Form5472 Prep is an independent service and is not affiliated with, endorsed by, or connected to Firstbase.