casemark/analyzing-corporate-tax-structures

Analyzing Corporate Tax Structures

When To Use

• Evaluating entity type selection (C-corp, S-corp, LLC, LP, partnership) for a new venture or restructuring
• Assessing multi-state nexus exposure and apportionment impact on effective tax rate
• Modeling the tax consequences of a proposed M&A transaction, reorganization, or conversion
• Comparing pass-through vs. double-taxation structures under current rate schedules
• Reviewing international tax posture including GILTI, FDII, Subpart F, and treaty positions
• Optimizing the blended effective tax rate across federal, state, and international jurisdictions

Inputs To Gather

• Entity details: Current entity type, jurisdiction of formation, ownership structure, and any existing elections (e.g., S-election, check-the-box)
• Financial data: Projected or historical revenue, EBIT, taxable income, and distributions/dividends
• State footprint: States where the entity has physical presence, employees, sales, or economic nexus triggers
• Ownership profile: Number and type of owners (individuals, trusts, foreign persons, other entities), ownership percentages
• International operations: Foreign subsidiaries, intercompany transactions, transfer pricing arrangements, treaty jurisdictions
• Transaction context: If restructuring, the proposed deal structure (asset vs. stock sale, merger, conversion, spin-off)
• Tax attributes: NOL carryforwards, credit carryforwards, built-in gains exposure, Section 382 limitations

Workflow

1. Define scope and objectives

   • Confirm whether the analysis covers entity selection, restructuring, rate optimization, or a combination
   • Identify the decision the stakeholder needs to make and the alternatives under consideration

2. Map entity structure and ownership

   • Diagram the current (or proposed) entity chart with ownership percentages
   • Flag any ownership constraints (e.g., S-corp eligibility limits, partnership allocation rules)

3. Calculate federal tax impact by alternative

   • For each entity option, compute taxable income, entity-level tax, and owner-level tax on distributions
   • Apply current statutory rates: C-corp at 21% federal [VERIFY — confirm current rate]; qualified dividend rate at 20% + 3.8% NIIT [VERIFY]; individual pass-through rates with §199A deduction where applicable [VERIFY eligibility and phase-outs]
   • Model total tax burden including self-employment tax exposure for pass-through entities

4. Analyze state and local tax exposure

   • Identify nexus-creating activities in each state using both physical presence and economic nexus thresholds [VERIFY — state-specific thresholds vary]
   • Determine apportionment methodology per state (single sales factor vs. three-factor) [VERIFY by state]
   • Calculate state effective rate for each entity alternative, accounting for entity-level taxes (e.g., California LLC fee, Texas margin tax, Illinois PTE tax) [VERIFY current rates]
   • Assess availability of PTE tax elections and corresponding owner-level SALT deduction benefits

5. Evaluate international tax considerations (if applicable)

   • Identify CFC status and Subpart F income categories
   • Model GILTI inclusion and §250 deduction (50% deduction for C-corps, unavailable to pass-throughs) [VERIFY current deduction percentage]
   • Assess FDII benefit for domestic C-corps with export income
   • Review applicable tax treaties and withholding rates on cross-border payments
   • Flag transfer pricing risks on intercompany transactions

6. Model transaction-specific impacts (if restructuring)

   • Compare taxable vs. tax-free reorganization paths (Type A, B, C, D, F reorganizations)
   • Quantify built-in gains exposure for S-corp conversions within recognition period [VERIFY — currently 5 years]
   • Calculate Section 338(h)(10) or Section 336(e) election impacts for stock-deal-treated-as-asset scenarios
   • Assess Section 382 limitations on post-acquisition NOL utilization

7. Compute blended effective tax rate

   • Aggregate federal, state, and international tax for each alternative into a single blended ETR
   • Present side-by-side comparison table showing total tax dollars and ETR by scenario

Output

The analysis report should include:

• Executive summary: Recommended structure with headline ETR and key drivers
• Entity comparison matrix: Side-by-side table of 2–4 alternatives showing federal tax, state tax, international tax, total tax, and blended ETR
• State nexus map: List of nexus states with apportionment factors and entity-level tax obligations
• International tax summary (if applicable): CFC chart, GILTI/FDII calculations, treaty rate table
• Sensitivity analysis: Impact of ±10–20% income variance on ETR and total tax across alternatives
• Implementation steps: Specific elections, filings, and deadlines required to execute the recommended structure
• Risk factors and limitations: Assumptions made, regulatory uncertainty, and items requiring further diligence

Quality Checks

• Confirm all statutory rates and thresholds are current — mark with [VERIFY] any rate that may have changed since last update
• Validate that entity eligibility requirements are met (e.g., S-corp shareholder limits, partnership substantial economic effect)
• Ensure apportionment calculations use the correct state-specific methodology and sourcing rules
• Cross-check that pass-through income allocations tie to ownership percentages and any special allocation provisions
• Verify NOL and credit carryforward utilization does not exceed applicable limitations (Section 382, SRLY rules)
• Confirm international calculations account for foreign tax credits and avoid double-counting
• Flag any position that may trigger disclosure requirements (e.g., uncertain tax positions under ASC 740, reportable transactions)