Reverse-engineer target tax outcomes, model multi-year retained earnings and R&D funding, and produce strategic tax analysis for small C-Corps. Covers deduction gap analysis, capital source modeling, §174 R&D amortization timing, NOL carryforward projections, and loan structure optimization.
Reverse-engineer target tax outcomes, model multi-year funding for R&D, and produce strategic tax analysis for small C-Corps with consulting revenue.
Target tax / 0.21 = Required taxable income
Revenue - Required taxable income = Required total deductions
Required deductions - Current documented deductions = Gap
For each category note:
Categories to check:
Total realistic gap fill = sum of categories with actual documentation or high probability of bank statement confirmation.
Revenue - (current + realistic additional deductions) = Achievable taxable income
Achievable taxable income x 0.21 = Achievable tax
If the gap is >50% of revenue, flag it as unrealistic. A normal consulting firm has 40-60% direct labor/COGS. >90% total expense ratio = red flag.
Revenue - Expenses - Tax = Retained earnings
Post-2022, R&D is NOT fully deductible in Year 1:
This means a $300K R&D spend creates only $30K in Year 1 deductions. The remaining $270K is a section 174 amortization pool that provides deductions in future years.
For each year model:
When revenue resumes:
Entity A (personal) -> Entity B (operating) -> Entity C (investment)
For each link evaluate:
CRITICAL: Loan forgiveness = cancellation of debt income (CODI) = taxable to debtor. Loan conversion to equity is NOT taxable.
taxes/2025/
├── 2025-corporate-tax-analysis.yaml # 3+ scenarios, all numbers
├── 2025-ai-rd-budget-strategy.yaml # R&D thesis, QRE classification
├── 2025-retained-earnings-ai-growth-model.yaml # 5-yr funding model
└── session-tax-review-YYYY-MM-DD.md # Session summary
Each YAML file should be self-contained - usable by future sessions.
Confusing spending with deduction - Money spent on assets (section 179) stays in the company as an asset, the cost is deducted. This is the ONLY way to both retain value AND deduct the cost.
Assuming R&D is fully deductible - section 174 amortization since 2022 means only 10% is deductible in Year 1.
Loan forgiveness as tax strategy - CODI makes forgiven debt taxable income. Conversion to equity is not taxable.
Retroactive W-2 - Cannot issue a W-2 for a prior tax year after that year has ended. Only possible prospectively.
NOL carryforward assumptions - Must confirm prior year returns were filed. If 2024 is unfiled, the 2023 NOL is unsubstantiated.
Itemizing vs standard - For TX (no state tax), property tax alone rarely exceeds the MFJ standard deduction ($31,500 in 2025). Always compare.
When creating future tax/strategy issues:
| Priority | When | Pattern |
|---|---|---|
| BLOCKER | ASAP | Unfiled prior year returns |
| HIGH | Quarter | Missing docs, extension decisions |
| MEDIUM | Next year | Annual filing with year header (2027, 2028...) |
| LOW | Future | Strategic planning (R&D, productization) |
Close issues when they are: