Business Tax & Entity Structuring Services

Keep your company compliant, tax-efficient & primed for global growth

WHAT WE OFFER

  • Business Tax Returns

    We prepare and file federal and state returns for multi-member LLCs, partnerships, S-Corps, and C-Corps—removing the guesswork from compliance. Our team tracks every Tax Filing Deadline US and foreign reporting requirement, from Schedule K-1 allocations to Form 5471 disclosures for owners with overseas subsidiaries. Expect error-free filings, proactive extension planning, and real-time visibility into your tax position through our secure client portal.

  • State Franchise & Excise Tax

    From California’s franchise tax to Tennessee’s excise filings, state levies can blindside even seasoned founders. We calculate, file, and pay your assessments on time, ensuring you remain in good standing across all domicile states where you operate—and avoid costly penalties that derail cash flow.

  • LLC Setup & Compliance

    Launching the right entity is the first step toward lasting tax efficiency. We advise on U.S. LLC formation for both domestic owners and expats—mapping ownership tiers, drafting operating agreements, and securing EINs. Annual compliance reminders keep you up to date on franchise fees, foreign registrations, and state renewal deadlines.

  • C-Corp Structuring & Optimization

    Fast-growing startups often graduate to C-Corps for fundraising and stock option flexibility. We model whether a Foreign Earned Income Exclusion or Foreign Tax Credit could reduce your overall liability, then help you elect or revoke S-status, organize equity classes, and comply with §1202 QSBS requirements.

  • Entrepreneur-Focused Tax Planning

    You’re busy building; we’re busy forecasting. Quarterly strategy sessions cover expat taxation scenarios, digital nomad taxes, rental property tax claims, and exit-driven reorganizations. We run projections through our Expatriate Tax Calculator to surface the best blend of deductions, credits, and entity elections—helping you keep more capital in the business.

Why Clients Choose Big Cake Tax

We’re a boutique tax advisory firm that understands entrepreneurs because we are entrepreneurs. From our first solo-practitioner client to the multi-entity groups we serve today, our mission has stayed the same: simplify complex tax obligations so you can focus on scaling.

Hear from Our Clients

  • “After expanding to the EU we needed guidance on foreign tax credit calculation and C-Corp restructuring. Your team saved us six figures in the first year.”

    – Lena R., SaaS Founder

  • “As an Airbnb host with multiple LLCs, navigating AirBnB tax deductions, state excise tax, and quarterly estimates felt impossible—until we partnered with you.”

    – Michael J., Real-Estate Entrepreneur

  • “Your proactive alerts on the 2025 Tax Filing Deadline US and help with tax resolution services kept my franchise chain penalty-free.”

    – Carla D., Restaurant Group CEO

Frequently Asked Questions

  • Yes—most multi-member LLCs classified as partnerships must file Form 1065 even with zero income, preventing late-filing penalties.

  • We coordinate Foreign Earned Income Exclusion or foreign tax credit limits with pass-through income so you don’t pay tax twice.

  • If your U.S. entity owns at least 10 % of a foreign corporation, you must attach Form 5471 with your corporate return. Non-compliance can trigger $10k fines per form.

  • We prepare audit-ready workpapers and represent you before the IRS, leveraging statute guidelines under § 901 and § 116 to defend every dollar.

  • Ideally 3–5 years. Early tax planning maximizes QSBS, minimizes state exit tax, and aligns entity structure with investor expectations.