(iv) Pre-contracting-year costs. If a taxpayer reasonably expects to enter into a long-term contract in a future taxable year, the taxpayer must capitalize all costs incurred prior to entering into the contract that will be allocable to that contract (e.g., bidding and proposal costs). A taxpayer is not required to compute a completion factor, or to include in gross income any amount, related to allocable contract costs for any taxable year ending before the contracting year or, if applicable, the 10-percent year defined in paragraph (b)(6)(i) of this section. In that year, the taxpayer is required to compute a completion factor that includes all allocable contract costs that have been incurred as of the end of that taxable year (whether previously capitalized or deducted) and to take into account in computing taxable income the related gross receipts and the previously capitalized allocable contract costs. If, however, a taxpayer determines in a subsequent year that it will not enter into the long-term contract, the taxpayer must account for these pre-contracting-year costs in that year (e.g., as a deduction or an inventoriable cost) using the appropriate rules contained in other sections of the Code or regulations.