Guides
Deferred Tax Asset: Definition, Examples, and Valuation
A deferred tax asset (DTA) is a balance sheet item that represents future income tax savings. It arises when a company has paid more tax, or recognized more expense for book purposes, than the tax code currently allows, creating a deductible amount that will reduce taxable income in a later year. DTAs come from timing differences between GAAP and tax rules and from carryforwards such as net operating losses.
Put simply: a DTA is a receivable for taxes, not cash, but a right to pay less tax later. Under U.S. GAAP, companies account for these items under ASC 740, Income Taxes. The amount reported can be reduced by a valuation allowance if realization is doubtful.
What is a deferred tax asset?
A deferred tax asset is the future tax benefit created when the tax basis of an item differs from its book carrying amount in a way that will produce a deduction later, or when a loss or credit can be carried forward. It is measured by multiplying the deductible temporary difference by the enacted tax rate expected to apply when the item reverses.
The mechanism is timing. Book income and taxable income rarely match in a given year because GAAP and the Internal Revenue Code recognize revenue and expenses on different schedules. When a company records an expense before the IRS lets it deduct that expense, or records income for tax before it books that income, it pays more tax now and less later. That “less later” is the DTA.
DTAs are not permanent differences. A permanent difference, like tax-exempt municipal bond interest or a nondeductible fine, never reverses and creates no deferred tax. A DTA only exists for a temporary difference that will unwind in a future period.
What creates a deferred tax asset?
Deferred tax assets arise from deductible temporary differences and from carryforwards. The common sources fall into three buckets: expenses booked before they are deductible, income taxed before it is booked, and unused losses or credits that offset future tax. Each reverses in a later year and reduces future taxable income.
Net operating losses (NOLs)
A net operating loss carryforward is one of the largest sources of DTAs, especially for startups and companies in a downturn. When deductions exceed income, the loss can offset future taxable income. For NOLs arising after 2017 under the Tax Cuts and Jobs Act, the carryforward is indefinite (no expiration), but the deduction in any future year is capped at 80% of that year’s taxable income. The DTA equals the NOL balance multiplied by the enacted rate (21% federal for C corporations).
For the mechanics of the loss itself, see our guide to the net operating loss (NOL) carryforward rules.
Warranty and other accrued liabilities
A manufacturer records warranty expense when a product ships, based on an estimate, because GAAP requires matching the cost to the sale. The IRS generally does not allow a deduction until the warranty is actually paid. That gap creates a deductible temporary difference and a DTA. Accrued bonuses, litigation reserves, and allowances for bad debts often work the same way.
Deferred revenue and other timing items
In some cases a company must include payment in taxable income when cash is received, even though GAAP defers the revenue until the service is performed. Tax paid ahead of book recognition creates a DTA. See how the book side works in our explainer on deferred revenue accounting. Other common sources include stock-based compensation and the excess of tax depreciation timing that reverses in the company’s favor.
DTA vs DTL: the difference
A deferred tax asset reflects future tax savings from deductible temporary differences; a deferred tax liability (DTL) reflects future tax owed from taxable temporary differences. A DTA means the company will pay less tax later. A DTL means it will pay more. The two often coexist on the same balance sheet and are netted by jurisdiction.
| Feature | Deferred tax asset (DTA) | Deferred tax liability (DTL) |
|---|---|---|
| What it represents | Future tax savings | Future tax owed |
| Trigger | Deductible temporary difference or carryforward | Taxable temporary difference |
| Book vs tax | Expense booked before deducted, or income taxed before booked | Deduction taken before expensed, or income booked before taxed |
| Classic example | NOL carryforward, warranty accrual | Accelerated tax depreciation vs straight-line book |
| Balance sheet effect | Increases assets (if realizable) | Increases liabilities |
| Valuation allowance | May apply if realization is doubtful | Not applicable |
Accelerated depreciation is the textbook DTL: bonus or MACRS depreciation front-loads the deduction for tax while book depreciation is straight-line, so tax basis drops faster than book value and the company owes more later. Compare the book methods in our guide to depreciation methods.
ASC 740 and the valuation allowance
ASC 740 governs how U.S. companies recognize and measure deferred taxes. It requires a company to record a DTA for every deductible temporary difference and carryforward, then reduce that DTA with a valuation allowance if it is “more likely than not” (a likelihood greater than 50%) that some or all of the asset will not be realized. The allowance is a contra-asset that lowers the net DTA reported.
Realization depends on having enough future taxable income to use the deduction. Management weighs all available positive and negative evidence. Negative evidence includes a history of recent losses or expiring carryforwards. Positive evidence, under ASC 740-10-30-22, includes existing contracts or a sales backlog, appreciated asset value in excess of tax basis, and a strong earnings history apart from the loss that created the deductible amount.
A cumulative loss in recent years is significant negative evidence that is hard to overcome. Companies in that position frequently record a full valuation allowance, writing the net DTA to zero, until they return to sustained profitability. When conditions improve, releasing the allowance can produce a large one-time tax benefit in the income statement.
For the full standard, including how deferred taxes flow through the tax provision, read our ASC 740 income tax accounting guide.
Worked example: a DTA with a valuation allowance
Assume MakerCo, a C corporation, accrues $500,000 of warranty expense in 2026 for book purposes but has paid none of it, so the IRS allows no deduction yet. It also carries forward a $2,000,000 post-2017 NOL. The enacted federal rate is 21%.
The gross DTA is calculated as follows:
- Warranty accrual DTA: $500,000 deductible difference times 21% equals $105,000.
- NOL carryforward DTA: $2,000,000 times 21% equals $420,000.
- Gross deferred tax asset: $105,000 plus $420,000 equals $525,000.
Now apply ASC 740. Suppose management projects enough future taxable income to realize the warranty DTA and roughly half of the NOL DTA, but not the rest, given a recent loss history. It concludes that $315,000 of the $525,000 is more likely than not to be realized. The company records a $210,000 valuation allowance.
| Line item | Amount |
|---|---|
| Gross deferred tax asset | $525,000 |
| Less: valuation allowance | ($210,000) |
| Net deferred tax asset reported | $315,000 |
The $210,000 allowance is recorded as deferred income tax expense in the year it is established, increasing the effective tax rate. If MakerCo later shows sustained profits and reassesses realization as more likely than not, it releases the allowance, recording a $210,000 deferred tax benefit that lowers that year’s tax expense.
Where DTAs appear on financial statements
Under ASC 740, all deferred tax assets and liabilities are classified as noncurrent on a classified balance sheet, regardless of when the underlying item reverses. Within a single tax jurisdiction, DTAs and DTLs are netted to a single noncurrent amount. DTAs in different jurisdictions are not offset. C corporations that file Form 1120 reconcile book and taxable income on Schedule M-1 or M-3, where many of these temporary differences first surface.
Frequently asked questions
Is a deferred tax asset a real asset?
A deferred tax asset is a real asset for accounting purposes, but it is not cash. It represents a future reduction in taxes payable, realized only if the company earns enough taxable income to use the deduction. If realization is doubtful, ASC 740 requires a valuation allowance that can reduce the reported DTA to zero, so its economic value depends on future profitability.
What is the difference between a deferred tax asset and a deferred tax liability?
A deferred tax asset represents future tax savings from deductible temporary differences or carryforwards, meaning the company will pay less tax later. A deferred tax liability represents future tax owed from taxable temporary differences, such as accelerated tax depreciation, meaning the company will pay more tax later. Both arise from timing gaps between GAAP book income and taxable income and often appear together.
How is a deferred tax asset calculated?
Multiply the deductible temporary difference or carryforward balance by the enacted tax rate expected to apply when the item reverses. For a C corporation, that is generally the 21% federal rate plus any applicable state rate. A $1,000,000 NOL at 21% produces a $210,000 gross DTA. You then reduce that gross amount by any valuation allowance required under ASC 740.
What is a valuation allowance for a deferred tax asset?
A valuation allowance is a contra-asset under ASC 740 that reduces a DTA to the amount more likely than not (greater than 50% probability) to be realized. It is required when negative evidence, such as recent cumulative losses, outweighs positive evidence like a sales backlog or strong prior earnings. Establishing it increases tax expense; releasing it later creates a tax benefit.
Do NOL carryforwards create deferred tax assets?
Yes. A net operating loss carryforward creates a DTA equal to the loss balance times the enacted tax rate. Post-2017 NOLs under the Tax Cuts and Jobs Act carry forward indefinitely but can offset only 80% of taxable income in any future year. The DTA is realizable only to the extent future taxable income is expected, which drives the valuation allowance analysis.
Why would a company write down a deferred tax asset?
A company writes down a DTA through a valuation allowance when it is more likely than not that future taxable income will be insufficient to use the deduction. A string of recent losses is strong negative evidence. The write-down flows through deferred income tax expense, raising the effective tax rate in the period the allowance is recorded.
Reviewed by The Ledgerism Editorial Team. Last reviewed: July 2026.