Resources

Form 5472 Knowledge Base

Free guides, tools, and resources to help you understand and complete your Form 5472 filing obligations.

Filing Guides

What is Form 5472?

Complete guide to IRS Form 5472 — who must file, what's required, and how to comply.

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Form 5472 Penalties Guide

Understanding the $25,000 penalty, additional fines, and how to avoid them.

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Filing Deadlines & Extensions

Important deadlines for 2025-2026 and how to request a 6-month extension with Form 7004.

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Foreign-Owned LLC Filing Guide

Step-by-step guide for foreign owners of U.S. single-member LLCs.

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Form 5472 vs Form 5471

Key differences between these two commonly confused IRS forms.

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Free Tools

EIN Formatter

Validate and format your EIN into the standard IRS XX-XXXXXXX format.

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Business Code Lookup

Search NAICS business activity codes required for Form 5472 filing.

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Penalty Calculator

Estimate potential IRS penalties for missed Form 5472 filings.

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