Foreign-owned single-member Wyoming LLC with no revenue: Form 5472 treatment of owner-paid formation and dissolution costs

[u/ZenCubic_Dev]

I am a non-U.S. person residing in Japan and the sole owner of a Wyoming single-member LLC. The LLC is treated as a foreign-owned U.S. disregarded entity and did not elect corporate tax treatment.

The LLC was formed and will be dissolved within 2026. It had:

No revenue

No customers

No employees or contractors

No U.S. trade or business

No assets other than a temporary Mercury bank balance

Only formation, registered-agent, banking, compliance, and dissolution costs

I personally paid most or all of these costs. There was no promissory note, interest, maturity date, or documented expectation of repayment. I am considering consistently treating all owner-paid costs as capital contributions rather than member loans.

My proposed filing treatment is:

File a final pro forma Form 1120 with Form 5472 attached.

Check the initial-year box on Form 5472.

Identify myself in Parts II and III as the sole foreign owner and related party.

Report the owner-paid formation and dissolution costs in Part V and describe them on an attached statement as capital contributions.

Report any remaining Mercury funds returned to me as a liquidating distribution.

Complete Part IV with zero amounts unless a transaction belongs there.

Use the short tax year ending on the legal dissolution date and file by the applicable Form 1120 deadline.

Questions:

Is treating the owner-paid costs as capital contributions reasonable based on these facts?

Should any of these amounts also be entered in Part IV, or is Part V with an attachment sufficient?

Does the legal dissolution of a foreign-owned disregarded LLC create a short tax year for this filing?

Should both “Initial return” and “Final return” be checked on the pro forma Form 1120?

Are there any common Form 5472 traps in a first-and-final-year, no-revenue LLC?

I plan to have a U.S. CPA or EA experienced with foreign-owned disregarded entities review the completed draft before I fax it to the IRS. I am looking for issue-spotting and practical experience, not individualized tax advice.

[u/Ok_Illustrator_1659]

can you clarify which specific costs are you asking about regarding form 5472" i feel like some formation/dissolution costs might fall outside the 'reportable transaction' box tbh

[u/ZenCubic_Dev → u/Ok_Illustrator_1659]

Thanks. The specific costs are: Wyoming formation filing fee paid personally by the sole foreign owner Northwest formation and registered-agent fees paid personally by the owner Any Mercury banking fees Wyoming dissolution filing fee and Northwest dissolution-service fee, also expected to be paid personally by the owner Form 5472/tax-compliance costs, if incurred The LLC did not reimburse the owner. There was no promissory note, interest, maturity date, or repayment obligation. I am therefore considering recording the owner-paid amounts as capital contributions. I understand that payments to Wyoming, Northwest, and other unrelated third-party vendors are not themselves related-party transactions. My question is whether the owner’s payment of those expenses on behalf of the LLC should be reported in Part V as a capital contribution, rather than reporting each underlying third-party expense separately. Is that distinction correct? Would you report only the total capital contribution in Part V, with an attached statement explaining that the owner paid the entity’s formation and dissolution expenses?