When a company records a deferred tax asset, it may need to also report a valuation allowance if it is "more likely than not" that some portion or all of the deferred tax asset will not be realized. the fasb accounting standards codification represents the single source of authoritative u. s. generally accepted accounting principles. required: 1. obtain the relevant authoritative literature on disclosure requirements pertaining to how a firm should determine whether a valuation allowance for deferred tax assets is needed using the fasb’s codification research system at the fasb website (). what is the specific citation that describes the guidelines for determining the disclosure requirements? 2. what are the guidelines?