How do I value net operating loss (NOL) carryforwards and assess the valuation allowance?

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AcadiFi · Accepted Answer

NOLs generate DTAs equal to NOL × expected future tax rate. The valuation allowance reduces the DTA to the amount more-likely-than-not to be realized.

Step 1: Gross DTA
Gross NOL DTA = $840M × 21% = $176.4M (US federal only; adjust for state/foreign)

Step 2: Realizability assessment
Under ASC 740, management weighs:
- Cumulative losses in recent years (negative evidence)
- Forecast future taxable income (positive evidence)
- Tax-planning strategies (e.g., asset sales)
- Reversal of existing DTLs

Crestvale's $210M valuation allowance exceeds the gross NOL DTA, suggesting state and foreign NOLs are also reserved. The remaining recognized DTA of approximately $0M net implies management sees realization as unlikely.

Step 3: Economic value for valuation
Ignore the accounting DTA and model directly:
- Forecast taxable income trajectory
- Apply NOL utilization (generally up to 80% of taxable income post-TCJA for post-2017 NOLs, with indefinite carryforward)
- Discount tax savings at firm's WACC or cost of debt

For Crestvale Biotech, if Phase III trials succeed in 2028 and taxable income scales to $400M by 2031, NOL tax shield value is significant. A simple model:
- 2028-2035: utilize $840M at 80% cap against forecast income
- PV of tax savings at 10% discount rate ≈ $95-120M

Step 4: Section 382 limitations
Ownership changes (>50% over 3 years) trigger Section 382 annual utilization limits. Check recent capital raises — equity issuances can trigger the test and haircut NOL value.

How do I value net operating loss (NOL) carryforwards and assess the valuation allowance?

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