Form 8858 Foreign Disregarded Entity Calculator 2026
Determine Form 8858 filing requirements for owners of Foreign Disregarded Entities (FDE) and Foreign Branches (FB). Calculate Schedule M obligations, penalty exposure, and multi-entity tracking.
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Total sales, loans, rents, royalties, services to/from FDE Required
Form 8858 Filing
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Schedule M Status
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FDE/FB Net Income
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Penalty Exposure
Form 8858 Compliance Summary
Form 8858 Filing Requirements
Any US person that owns a Foreign Disregarded Entity or operates a Foreign Branch must file Form 8858 annually. The form captures income, expense, and balance sheet information for the FDE, and Schedule M captures related-party transactions.
Who Files
Direct US owner of FDE: file with Form 1040, 1120, or 1065
CFC that owns FDE: CFC files; US shareholder attaches to Form 5471
CFP that owns FDE: CFP files; US partner attaches to Form 8865
Foreign Branch: treated same as FDE for reporting purposes
CFC that owns FDE: CFC files; US shareholder attaches to Form 5471
CFP that owns FDE: CFP files; US partner attaches to Form 8865
Foreign Branch: treated same as FDE for reporting purposes
Penalty (IRC 6038)
$10,000 base per FDE/FB per year. Continuation: $10,000 per 30-day period after 90-day IRS notice, up to $50,000. Foreign tax credits may be reduced by 10%.
Sources and References (click to expand)
- IRS Form 8858 Instructions β Information Return of US Persons With Respect to Foreign Disregarded Entities
- IRC Section 6038 β Information Reporting with Respect to Certain Foreign Corporations and Partnerships
- Treasury Reg 1.367(d) β Transfers of Intangible Property to Foreign Entities
- IRS Publication 519 β US Tax Guide for Aliens
- Treasury Reg 301.7701-3 β Check-the-Box Entity Classification
- IRS International β Foreign Disregarded Entity Overview
Extended
Multi-FDE/FB Calculator with Transaction Tracking
Track multiple foreign disregarded entities, per-entity transaction amounts, SVG penalty exposure bar chart, and Schedule M requirements table.
Add multiple FDEs and FBs to track aggregate filing requirements and penalty exposure.
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| Entity | Type | Gross Income | Related-Party Tx | Sch M? | Base Penalty | Max Penalty |
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No entities added yet.
Penalty exposure by entity based on your multi-entity tracker.
Add entities in the Multi-Entity Tracker tab to see the penalty chart.
Enter transaction amounts by type for Schedule M reporting.
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| Transaction Type | Amount | Schedule M Line | Arm's-Length Required? |
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Frequently Asked Questions
What is Form 8858 and who must file it?
Form 8858 is an information return filed by US persons that own a Foreign Disregarded Entity (FDE) or operate a Foreign Branch (FB). An FDE is a business entity organized under foreign law that is wholly owned (directly or indirectly) by a US person and has made a check-the-box election to be treated as disregarded for US tax purposes β for example, a wholly-owned foreign LLC. The owner of an FDE must attach Form 8858 to their annual return (Form 1040, 1120, 1065, etc.). Indirect owners through a controlled foreign corporation (CFC) or controlled foreign partnership (CFP) are also required to file.
What is the difference between an FDE and a Foreign Branch?
A Foreign Disregarded Entity (FDE) is a separate legal entity under foreign law but is disregarded for US federal tax purposes. It typically results from a check-the-box election under Treasury Regulations. A Foreign Branch (FB) is not a separate legal entity but is instead a set of activities conducted by a US person directly through a permanent establishment or fixed place of business in a foreign country. Both FDEs and FBs require Form 8858 filing when the owner is a US person, but the nature of the activities and the legal structure differ significantly.
When is Schedule M required with Form 8858?
Schedule M (Transactions Between Foreign Disregarded Entity and the Filer or Other Related Entities) is required when the filer had reportable transactions with the FDE during the tax year. Reportable transactions include: sales or purchases of inventory or other property, rents, royalties, services, loans, dividends, or other transfers of value. Schedule M requires disclosure of both the type and amount of each transaction. The purpose is to ensure arm's-length pricing and detect income shifting between the FDE and its related US owner.
What are the penalties for failure to file Form 8858?
Under IRC 6038, the penalty for failure to file Form 8858 is $10,000 per FDE per tax year. If the failure continues for more than 90 days after the IRS mails notice of the failure, an additional penalty of $10,000 applies for each 30-day period (or fraction thereof), up to $50,000 in continuation penalties. In addition, the IRS may reduce the filer's foreign tax credits by 10% for the applicable tax year. Criminal penalties under IRC 7203 may also apply for willful failures. These penalties apply to each FDE separately, so owning multiple FDEs multiplies the exposure.
How does the check-the-box election create an FDE?
Under Treasury Regulations 301.7701-3, certain foreign entities are "eligible entities" that can elect their classification for US federal tax purposes. A foreign single-member LLC or similar entity owned by a US person defaults to being treated as a corporation unless it elects disregarded entity status by filing Form 8832. Once elected, the entity is an FDE β it is transparent for US tax purposes, meaning its income and expenses flow directly to the US owner's return. However, the entity remains a separate legal entity under foreign law, so it may have local filing obligations and create nexus in the foreign jurisdiction.