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Service 03 // Corporate & LLCs

U.S. Business Tax for Foreign Founders & Corporate Compliance

Setting up a U.S. entity is a powerful move for global entrepreneurs, but the associated IRS information reporting can be a minefield. For foreign-owned U.S. LLCs and corporations, missing a single mandatory informational filing can result in catastrophic, automatic penalties starting at $25,000. True business compliance means ensuring your corporate structure is seamlessly reported, completely transparent to the IRS, and perfectly optimized to prevent unnecessary U.S. tax drag on your global operations.

U.S. Business Tax for Foreign Founders & Corporate Compliance

What this service covers

  • Foreign-Owned Single-Member LLCs: Flawless preparation of Form 5472 and Form 1120 Proforma to secure complete compliance for international owners.
  • Multi-Member & Corporate Tax Filings: Preparation of Form 1065 or complex corporate Form 1120 returns for scaling cross-border businesses.
  • State Franchise & Income Tax: Navigation of state-level nexus rules, franchise taxes, and annual report requirements across all 50 states.
  • Withholding Optimization: Structuring and reporting of U.S.-sourced effectively connected income (ECI) and FDAP withholding.

Who this page is for

This service is engineered specifically for international entrepreneurs, SaaS founders, and e-commerce business owners who:

  • Operate a U.S. LLC or C-Corp from outside the United States.
  • Need to clear up complex reporting requirements for foreign-owned single-member disregarded entities.
  • Have U.S. clients, payment gateways (Stripe/PayPal), or physical operations triggering a U.S. tax nexus.
  • Want to isolate their business liabilities while ensuring absolute transparency with federal and state authorities.

How we work

We handle the complex corporate accounting machinery so you can focus entirely on growing your business operations:

  1. Automated Data Ingestion: We utilize smart financial data parsing tools to ingest your corporate bank statements, digital invoices, and transactional records, instantly identifying and categorizing U.S. vs. foreign-sourced revenue.
  2. Boutique Corporate Structuring: Our corporate tax experts personally map your financial flows, ensuring that every informational form, including Form 5472, is perfectly filled and protecting you from aggressive IRS penalty exposures.

Documents we usually request

  • Corporate Formation Documents: Articles of Organization, Operating Agreements, and EIN confirmation letters.
  • Financial Ledgers: Profit and Loss statements, balance sheets, and full transaction histories from your payment processors.
  • Owner Disclosures: Full names, addresses, and tax identification details of all international owners and related parties.
  • State Letters: Any notices received from state Departments of Revenue or the IRS.

Protect your U.S. business

Protect your U.S. business from devastating automatic penalties. Let our corporate tax experts secure your corporate standing today.

Schedule Your Free Consultation

How the work moves

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The AI platform shortens intake and helps collect documents faster for review.

Use the AI platform

Discuss your situation

Send a short note. The request will be prepared for s@sternprotax.com.

Contact details

s@sternprotax.com

Telegram

@sternprotax

Location

Global service, based in NY