Deferred Tax Asset (DTA)
Definition
A deferred tax asset represents future tax savings — it arises when a company has paid or recognized more tax on its tax return than its book income implies, or has attributes like net operating losses (NOLs) that will reduce future cash taxes. Common sources include NOL carryforwards, warranty and bad-debt reserves recognized for book before tax, and stock-based compensation timing differences.
Conceptually, DTA equals the deductible temporary difference (or NOL) times the tax rate. If it is more likely than not that some portion will not be realized (e.g., the company may never generate enough taxable income), a valuation allowance reduces the DTA.
In M&A, target NOLs can carry over but their annual usage is limited after an ownership change (in the US, under Section 382), which caps how fast an acquirer can monetize them.
Why interviewers ask
Interviewers test DTAs mainly via NOLs ("a company has $100 of NOLs — what are they worth?") and via the valuation allowance concept. Traps: valuing NOLs at face value instead of tax rate times NOL (discounted for timing and Section 382 limits), and confusing which side of the timing difference creates a DTA versus a DTL.
Related terms
Interviews don't test definitions — they test recall under pressure.
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