Valuation Allowances on Deferred Tax Assets

A company that has lost money can accumulate tax-loss carryforwards — the right to reduce future tax bills once it becomes profitable. These sit on the balance sheet as deferred tax assets. But that asset is only worth something if the company expects to actually earn enough taxable profit to use it before it expires. When that is in doubt, accounting rules require a valuation allowance: a contra-asset that writes the deferred tax asset down toward its realistically usable value.

Because the allowance is judgment-based, it becomes a lever companies can pull. A struggling company facing a string of losses is required to record a large allowance, taking a tax-expense hit even though no cash changed hands. Later, if the company turns profitable and management becomes confident the deferred tax assets will be used, the allowance is released — producing a one-time, non-cash boost to net income that has nothing to do with operating performance.

Worked example. A company has $100 million of deferred tax assets from past losses but records a 60% valuation allowance because of a history of losses, leaving a net asset of $40 million and a $60 million tax expense in that year. Two years later, after three consecutive profitable quarters, management releases the entire allowance, recognizing a $60 million tax benefit that inflates that year's net income far above what operations alone produced.

Analysts should treat both the initial allowance and its later release as non-operating, non-cash items and strip them out when comparing earnings across periods.