When do you recognize a deferred tax asset and what's a valuation allowance?
I'm studying deferred taxes for CFA Level II. I understand deferred tax liabilities conceptually, but deferred tax assets confuse me — especially the valuation allowance under US GAAP. When exactly can a company record a DTA, and when must it be reduced?
Deferred tax assets (DTAs) arise when a company has paid more tax than the amount expensed on its income statement, or when it has tax loss carryforwards that will reduce future taxable income. The tricky part is whether the benefit will actually be realized.
When DTAs Arise:
- Tax loss carryforwards: Redwood Analytics lost $12M last year and expects to offset future profits
- Deductible temporary differences: Warranty liability recognized on GAAP books ($5M) but not yet deductible for tax until claims are paid
- Restructuring charges: Accrued on the income statement but not deductible until cash is spent
Recognition Rules:
| Framework | Recognition Criterion | Reduction Mechanism |
|---|---|---|
| IFRS (IAS 12) | Recognize if 'probable' (>50%) that future taxable profit will be available | Reduce carrying amount directly |
| US GAAP (ASC 740) | Recognize in full, then assess need for valuation allowance | Record a contra-asset (valuation allowance) |
Valuation Allowance (US GAAP):
Northfield Dynamics has a DTA of 28M in tax loss carryforwards (tax rate 30%). Management assesses whether it is 'more likely than not' (>50%) that the DTA will be realized.
Positive evidence:
- History of profitability (3 of last 5 years profitable)
- Signed contracts producing $15M revenue next year
- Tax planning strategies available
Negative evidence:
- Cumulative losses in recent years
- Operating in a declining industry
- Carryforwards expire in 2 years
If negative evidence outweighs positive, Northfield records a valuation allowance:
- DTA: $8.4M
- Valuation allowance: ($5.0M)
- Net DTA: $3.4M
Financial Statement Impact:
- Increasing the valuation allowance increases tax expense (reduces earnings)
- Releasing the valuation allowance decreases tax expense (boosts earnings)
- This is a common tool for earnings management — watch for large releases in periods of marginal profitability
IFRS vs. GAAP Key Difference: Under IFRS, you simply don't recognize the portion of the DTA that is not probable. There's no separate valuation allowance account. The effect on the balance sheet is similar, but the mechanism differs.
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