Navigating US Corporate Tax Compliance in 2026: 5 Key Updates

As we settle into 2026, the landscape of US corporate taxation continues to evolve, driven by global economic shifts and new regulatory frameworks. For multinational entities operating within or expanding into the US market, staying compliant is more critical—and complex—than ever.

Here are the top 5 areas of focus for corporate finance teams this year:

1. Enhanced Digital Asset Reporting

The IRS has finalized stricter reporting requirements for corporate digital asset holdings. If your balance sheet includes cryptocurrency or other digital tokens, ensuring accurate valuation and timely disclosure is paramount to avoid hefty penalties.

2. GILTI and FDII Calculations Revisited

Adjustments to the Global Intangible Low-Taxed Income (GILTI) and Foreign-Derived Intangible Income (FDII) regulations mean that previous tax modeling may need a fresh look. We recommend a Q1 review of your international tax structures to optimize your effective tax rate.

3. State Nexus & Remote Work

With remote work now a permanent fixture, "economic nexus" rules have tightened across many states. Having even a single remote employee in a new state can trigger sales tax and income tax obligations. A state-by-state nexus study is essential for 2026.

4. Green Energy Credits & Incentives

The Inflation Reduction Act's provisions are in full swing. Corporations investing in sustainable infrastructure or electric fleets can leverage significant tax credits, but the documentation requirements are rigorous. Don't leave money on the table due to poor record-keeping.

5. Beneficial Ownership Information (BOI)

While the initial rollout began previously, 2026 sees stricter enforcement on BOI reporting updates. Any change in senior leadership or ownership structure must be reported to FinCEN within 30 days.