TREASURY REGULATIONS

(a) Introduction—(1) In general. This section provides guidance with respect to the application of section 263A to property produced in a farming business as defined in paragraph (a)(5) of this section. Except as otherwise provided by the rules of this section, the general rules of §§ 1.263A-1 through 1.263A-3 and §§ 1.263A-7 through 1.263A-15 apply to property produced in a farming business. A taxpayer that engages in the raising or growing of any agricultural or horticultural commodity, including both plants and animals, is engaged in the production of property. Section 263A generally requires the capitalization of the direct costs and an allocable portion of the indirect costs that directly benefit or are incurred by reason of the production of this property. The direct and indirect costs of producing plants or animals generally include preparatory costs allocable to the plant or animal and preproductive period costs of the plant or animal. Except as provided in paragraphs (a)(2), (a)(3), and (e) of this section, taxpayers must capitalize the costs of producing all plants and animals unless the election described in paragraph (d) of this section is made.

(2) Exception—(i) In general. Section 263A does not apply to the costs of producing plants with a preproductive period of 2 years or less or the costs of producing animals in a farming business, if the taxpayer is not—

(A) A corporation or partnership required to use an accrual method of accounting (accrual method) under section 447 in computing its taxable income from farming; or

(B) A tax shelter prohibited from using the cash receipts and disbursements method of accounting (cash method) under section 448(a)(3).

(ii) Tax shelter—(A) In general. A farming business is considered a tax shelter, and thus a taxpayer prohibited from using the cash method under section 448(a)(3), if the farming business is—

(1) A farming syndicate as defined in section 461(k); or

(2) A tax shelter, within the meaning of section 6662(d)(2)(C)(iii).

(B) Presumption. Marketed arrangements in which persons carry on farming activities using the services of a common managerial or administrative service will be presumed to have the principal purpose of tax avoidance, within the meaning of section 6662(d)(2)(C)(iii), if such persons prepay a substantial portion of their farming expenses with borrowed funds.

(iii) Examples. The following examples illustrate the provisions of this paragraph (a)(2):

(3) Exemption for certain small business taxpayers. For taxable years beginning after December 31, 2017, see § 1.263A-1(j) for an exception in the case of a small business taxpayer that meets the gross receipts test of section 448(c) and § 1.448-2(c).

(4) Costs required to be capitalized or inventoried under another provision. The exceptions from capitalization provided in paragraphs (a)(2), (a)(3), (d) and (e) of this section do not apply to any cost that is required to be capitalized or inventoried under another Internal Revenue Code or regulatory provision, such as section 263 or 471.

(5) Farming business—(i) In general. A farming business means a trade or business involving the cultivation of land or the raising or harvesting of any agricultural or horticultural commodity. Examples include the trade or business of operating a nursery or sod farm; the raising or harvesting of trees bearing fruit, nuts, or other crops; the raising of ornamental trees (other than evergreen trees that are more than 6 years old at the time they are severed from their roots); and the raising, shearing, feeding, caring for, training, and management of animals. For purposes of this section, the term harvesting does not include contract harvesting of an agricultural or horticultural commodity grown or raised by another. Similarly, merely buying and reselling plants or animals grown or raised entirely by another is not raising an agricultural or horticultural commodity. A taxpayer is engaged in raising a plant or animal, rather than the mere resale of a plant or animal, if the plant or animal is held for further cultivation and development prior to sale. In determining whether a plant or animal is held for further cultivation and development prior to sale, consideration will be given to all of the facts and circumstances, including: the value added by the taxpayer to the plant or animal through agricultural or horticultural processes; the length of time between the taxpayer's acquisition of the plant or animal and the time that the taxpayer makes the plant or animal available for sale; and in the case of a plant, whether the plant is kept in the container in which purchased, replanted in the ground, or replanted in a series of larger containers as it is grown to a larger size.

(A) Plant. A plant produced in a farming business includes, but is not limited to, a fruit, nut, or other crop bearing tree, an ornamental tree, a vine, a bush, sod, and the crop or yield of a plant that will have more than one crop or yield raised by the taxpayer. Sea plants are produced in a farming business if they are tended and cultivated as opposed to merely harvested.

(B) Animal. An animal produced in a farming business includes, but is not limited to, any stock, poultry or other bird, and fish or other sea life raised by the taxpayer. Thus, for example, the term animal may include a cow, chicken, emu, or salmon raised by the taxpayer. Fish and other sea life are produced in a farming business if they are raised on a fish farm. A fish farm is an area where fish or other sea life are grown or raised as opposed to merely caught or harvested.

(ii) Incidental activities—(A) In general. A farming business includes processing activities that are normally incident to the growing, raising, or harvesting of agricultural or horticultural products. For example, a taxpayer in the trade or business of growing fruits and vegetables may harvest, wash, inspect, and package the fruits and vegetables for sale. Such activities are normally incident to the raising of these crops by farmers. The taxpayer will be considered to be in the trade or business of farming with respect to the growing of fruits and vegetables and the processing activities incident to their harvest.

(B) Activities that are not incidental. Farming business does not include the processing of commodities or products beyond those activities that are normally incident to the growing, raising, or harvesting of such products.

(iii) Examples. The following examples illustrate the provisions of this paragraph (a)(5):

(b) Application of section 263A to property produced in a farming business—(1) In general. Unless otherwise provided in this section, section 263A requires the capitalization of the direct costs and an allocable portion of the indirect costs that directly benefit or are incurred by reason of the production of any property in a farming business (including animals and plants without regard to the length of their preproductive period). Section 1.263A-1(e) describes the types of direct and indirect costs that generally must be capitalized by taxpayers under section 263A and paragraphs (b)(1)(i) and (ii) of this section provide specific examples of the types of costs typically incurred in the trade or business of farming. For purposes of this section, soil and water conservation expenditures that a taxpayer has elected to deduct under section 175 and fertilizer that a taxpayer has elected to deduct under section 180 are not subject to capitalization under section 263A, except to the extent these costs are required to be capitalized as a preproductive period cost of a plant or animal.

(i) Plants. The costs of producing a plant typically required to be capitalized under section 263A include the costs incurred so that the plant's growing process may begin (preparatory costs), such as the acquisition costs of the seed, seedling, or plant, and the costs of planting, cultivating, maintaining, or developing the plant during the preproductive period (preproductive period costs). Preproductive period costs include, but are not limited to, management, irrigation, pruning, soil and water conservation (including costs that the taxpayer has elected to deduct under section 175), fertilizing (including costs that the taxpayer has elected to deduct under section 180), frost protection, spraying, harvesting, storage and handling, upkeep, electricity, tax depreciation and repairs on buildings and equipment used in raising the plants, farm overhead, taxes (except state and Federal income taxes), and interest required to be capitalized under section 263A(f).

(ii) Animals. The costs of producing an animal typically required to be capitalized under section 263A include the costs incurred so that the animal's raising process may begin (preparatory costs), such as the acquisition costs of the animal, and the costs of raising or caring for such animal during the preproductive period (preproductive period costs). Preproductive period costs include, but are not limited to, management, feed (such as grain, silage, concentrates, supplements, haylage, hay, pasture and other forages), maintaining pasture or pen areas (including costs that the taxpayer has elected to deduct under sections 175 or 180), breeding, artificial insemination, veterinary services and medicine, livestock hauling, bedding, fuel, electricity, hired labor, tax depreciation and repairs on buildings and equipment used in raising the animals (for example, barns, trucks, and trailers), farm overhead, taxes (except state and Federal income taxes), and interest required to be capitalized under section 263A(f).

(2) Preproductive period—(i) Plant—(A) In general. The preproductive period of property produced in a farming business means—

(1) In the case of a plant that will have more than one crop or yield (for example, an orange tree), the period before the first marketable crop or yield from such plant;

(2) In the case of the crop or yield of a plant that will have more than one crop or yield (for example, the orange), the period before such crop or yield is disposed of; or

(3) In the case of any other plant, the period before such plant is disposed of.

(B) Applicability of section 263A. For purposes of determining whether a plant has a preproductive period in excess of 2 years, the preproductive period of plants grown in commercial quantities in the United States is based on the nationwide weighted average preproductive period for such plant. The Commissioner will publish a noninclusive list of plants with a nationwide weighted average preproductive period in excess of 2 years. In the case of other plants grown in commercial quantities in the United States, the nationwide weighted average preproductive period must be determined based on available statistical data. For all other plants, the taxpayer is required, at or before the time the seed or plant is acquired or planted, to reasonably estimate the preproductive period of the plant. If the taxpayer estimates a preproductive period in excess of 2 years, the taxpayer must capitalize the costs of producing the plant. If the estimate is reasonable, based on the facts in existence at the time it is made, the determination of whether section 263A applies is not modified at a later time even if the actual length of the preproductive period differs from the estimate. The actual length of the preproductive period will, however, be considered in evaluating the reasonableness of the taxpayer's future estimates. The nationwide weighted average preproductive period or the estimated preproductive period is only used for purposes of determining whether the preproductive period of a plant is greater than 2 years.

(C) Actual preproductive period. The plant's actual preproductive period is used for purposes of determining the period during which a taxpayer must capitalize preproductive period costs with respect to a particular plant.

(1) Beginning of the preproductive period. The actual preproductive period of a plant begins when the taxpayer first incurs costs that directly benefit or are incurred by reason of the plant. Generally, this occurs when the taxpayer plants the seed or plant. In the case of a taxpayer that acquires plants that have already been permanently planted, or plants that are tended by the taxpayer or another prior to permanent planting, the actual preproductive period of the plant begins upon acquisition of the plant by the taxpayer. In the case of the crop or yield of a plant that will have more than one crop or yield, the actual preproductive period begins when the plant has become productive in marketable quantities and the crop or yield first appears, for example, in the form of a sprout, bloom, blossom, or bud.

(2) End of the preproductive period—(i) In general. In the case of a plant that will have more than one crop or yield, the actual preproductive period ends when the plant first becomes productive in marketable quantities. In the case of any other plant (including the crop or yield of a plant that will have more than one crop or yield), the actual preproductive period ends when the plant, crop, or yield is sold or otherwise disposed of. Field costs, such as irrigating, fertilizing, spraying and pruning, that are incurred after the harvest of a crop or yield but before the crop or yield is sold or otherwise disposed of are not required to be included in the preproductive period costs of the harvested crop or yield because they do not benefit and are unrelated to the harvested crop or yield.

(ii) Marketable quantities. A plant that will have more than one crop or yield becomes productive in marketable quantities once a crop or yield is produced in sufficient quantities to be harvested and marketed in the ordinary course of the taxpayer's business. Factors that are relevant to determining whether a crop or yield is produced in sufficient quantities to be harvested and marketed in the ordinary course include: whether the crop or yield is harvested that is more than de minimis, although it may be less than expected at the maximum bearing stage, based on a comparison of the quantities per acre harvested in the year in question to the quantities per acre expected to be harvested when the plant reaches full maturity; and whether the sales proceeds exceed the costs of harvest and make a reasonable contribution to an allocable share of farm expenses.

(D) Examples. The following examples illustrate the provisions of this paragraph (b)(2):

(ii) Animal. An animal's actual preproductive period is used to determine the period that the taxpayer must capitalize preproductive period costs with respect to a particular animal.

(A) Beginning of the preproductive period. The preproductive period of an animal begins at the time of acquisition, breeding, or embryo implantation.

(B) End of the preproductive period. In the case of an animal that will be used in the trade or business of farming (for example, a dairy cow), the preproductive period generally ends when the animal is (or would be considered) placed in service for purposes of section 168 (without regard to the applicable convention). However, in the case of an animal that will have more than one yield (for example, a breeding cow), the preproductive period ends when the animal produces (for example, gives birth to) its first yield. In the case of any other animal, the preproductive period ends when the animal is sold or otherwise disposed of.

(C) Allocation of costs between animal and yields. In the case of an animal that will have more than one yield, the costs incurred after the beginning of the preproductive period of the first yield but before the end of the preproductive period of the animal must be allocated between the animal and the yield using any reasonable method. Any depreciation allowance on the animal may be allocated entirely to the yield. Costs incurred after the beginning of the preproductive period of the second yield, but before the first yield is weaned from the animal must be allocated between the first and second yield using any reasonable method. However, a taxpayer may elect to allocate these costs entirely to the second yield. An allocation method used by a taxpayer is a method of accounting that must be used consistently and is subject to the rules of section 446 and the regulations thereunder.

(c) Inventory methods—(1) In general. Except as otherwise provided, the costs required to be allocated to any plant or animal under this section may be determined using reasonable inventory valuation methods such as the farm-price method or the unit-livestock-price method. See § 1.471-6. Under the unit-livestock-price method, unit prices must include all costs required to be capitalized under section 263A. A taxpayer using the unit-livestock-price method may elect to use the cost allocation methods in § 1.263A-1(f) or 1.263A-2(b) to allocate its direct and indirect costs to the property produced in the business of farming. In such a situation, section 471 costs are the costs taken into account by the taxpayer under the unit-livestock-price method using the taxpayer's standard unit price as modified by this paragraph (c)(1). Tax shelters, as defined in paragraph (a)(2)(ii) of this section, that use the unit-livestock-price method for inventories must include in inventory the annual standard unit price for all animals that are acquired during the taxable year, regardless of whether the purchases are made during the last 6 months of the taxable year. Taxpayers required by section 447 to use an accrual method or prohibited by section 448(a)(3) from using the cash method that use the unit-livestock-price method must modify the annual standard price in order to reasonably reflect the particular period in the taxable year in which purchases of livestock are made, if such modification is necessary in order to avoid significant distortions in income that would otherwise occur through operation of the unit-livestock-price method.

(2) Available for property used in a trade or business. The farm-price method or the unit-livestock-price method may be used by any taxpayer to allocate costs to any plant or animal under this section, regardless of whether the plant or animal is held or treated as inventory property by the taxpayer. Thus, for example, a taxpayer may use the unit-livestock-price method to account for the costs of raising livestock that will be used in the trade or business of farming (for example, a breeding animal or a dairy cow) even though the property in question is not inventory property.

(3) Exclusion of property to which section 263A does not apply. Notwithstanding a taxpayer's use of the farm-price method with respect to farm property to which the provisions of section 263A apply, that taxpayer is not required, solely by such use, to use the farm-price method with respect to farm property to which the provisions of section 263A do not apply. Thus, for example, assume Farmer A raises fruit trees that have a preproductive period in excess of 2 years and to which the provisions of section 263A, therefore, apply. Assume also that Farmer A raises cattle and is not required to use an accrual method by section 447 or prohibited from using the cash method by section 448(a)(3). Because Farmer A qualifies for the exception in paragraph (a)(2) of this section, Farmer A is not required to capitalize the costs of raising the cattle. Although Farmer A may use the farm-price method with respect to the fruit trees, Farmer A is not required to use the farm-price method with respect to the cattle. Instead, Farmer A's accounting for the cattle is determined under other provisions of the Code and regulations.

(d) Election not to have section 263A apply under section 263A(d)(3)—(1) Introduction. This paragraph (d) permits certain taxpayers to make an election not to have the rules of this section apply to any plant produced in a farming business conducted by the electing taxpayer. Except as provided in paragraph (d)(5) and (6) of this section, the election is a method of accounting under section 446. An election made under section 263A(d)(3) and this paragraph (d) is revocable only with the consent of the Commissioner.

(2) Availability of the election. The election described in this paragraph (d) is available to any taxpayer that produces plants in a farming business, except that no election may be made by a corporation, partnership, or tax shelter required to use an accrual method under section 447 or prohibited from using the cash method by section 448(a)(3). Moreover, the election does not apply to the costs of planting, cultivation, maintenance, or development of a citrus or almond grove (or any part thereof) incurred prior to the close of the fourth taxable year beginning with the taxable year in which the trees were planted in the permanent grove (including costs incurred prior to the permanent planting). If a citrus or almond grove is planted in more than one taxable year, the portion of the grove planted in any one taxable year is treated as a separate grove for purposes of determining the year of planting.

(3) Time and manner of making the election—(i) Automatic election. A taxpayer makes the election under this paragraph (d) by not applying the rules of section 263A to determine the capitalized costs of plants produced in a farming business and by applying the special rules in paragraph (d)(4) of this section on its original return for the first taxable year in which the taxpayer is otherwise required to capitalize section 263A costs. Thus, in order to be treated as having made the election under this paragraph (d), it is necessary to report both income and expenses in accordance with the rules of this paragraph (d) (for example, it is necessary to use the alternative depreciation system as provided in paragraph (d)(4)(ii) of this section). For example, a farmer who deducts costs that are otherwise required to be capitalized under section 263A but fails to use the alternative depreciation system under section 168(g)(2) for applicable property placed in service has not made an election under this paragraph (d) and is not in compliance with the provisions of section 263A.

(ii) Nonautomatic election. Except as provided in paragraphs (d)(5) and (6) of this section, a taxpayer that does not make the election under this paragraph (d) as provided in paragraph (d)(3)(i) of this section must obtain the consent of the Commissioner to make the election by filing a Form 3115, Application for Change in Method of Accounting, in accordance with § 1.446-1(e)(3).

(4) Special rules. If the election under this paragraph (d) is made, the taxpayer is subject to the special rules in this paragraph (d)(4).

(i) Section 1245 treatment. The plant produced by the taxpayer is treated as section 1245 property and any gain resulting from any disposition of the plant is recaptured (that is, treated as ordinary income) to the extent of the total amount of the deductions that, but for the election, would have been required to be capitalized with respect to the plant. In calculating the amount of gain that is recaptured under this paragraph (d)(4)(i), a taxpayer may use the farm-price method or another simplified method permitted under these regulations in determining the deductions that otherwise would have been capitalized with respect to the plant.

(ii) Required use of alternative depreciation system. If the taxpayer or a related person makes an election under this paragraph (d), the alternative depreciation system (as defined in section 168(g)(2)) must be applied to all property used predominantly in any farming business of the taxpayer or related person and placed in service in any taxable year during which the election is in effect. The requirement to use the alternative depreciation system by reason of an election under this paragraph (d) will not prevent a taxpayer from making an election under section 179 to deduct certain depreciable business assets.

(iii) Related person—(A) In general. For purposes of this paragraph (d)(4), related person means—

(1) The taxpayer and members of the taxpayer's family;

(2) Any corporation (including an S corporation) if 50 percent or more of the stock (in value) is owned directly or indirectly (through the application of section 318) by the taxpayer or members of the taxpayer's family;

(3) A corporation and any other corporation that is a member of the same controlled group (within the meaning of section 1563(a)(1)); and

(4) Any partnership if 50 percent or more (in value) of the interests in such partnership is owned directly or indirectly by the taxpayer or members of the taxpayer's family.

(B) Members of family. For purposes of this paragraph (d)(4)(iii), the terms “members of the taxpayer's family”, and “members of family” (for purposes of applying section 318(a)(1)), means the spouse of the taxpayer (other than a spouse who is legally separated from the individual under a decree of divorce or separate maintenance) and any of the taxpayer's children (including legally adopted children) who have not reached the age of 18 as of the last day of the taxable year in question.

(5) Revocation of section 263A(d)(3) election to permit exemption under section 263A(i). A taxpayer that elected under section 263A(d)(3) and paragraph (d)(3) of this section not to have section 263A apply to any plant produced in a farming business that wants to revoke its section 263A(d)(3) election, and in the same taxable year, apply the small business taxpayer exemption under section 263A(i) and § 1.263A-1(j) may revoke the election in accordance with the applicable administrative guidance as published in the Internal Revenue Bulletin (see § 601.601(d)(2)(ii)(b) of this chapter). A revocation of the taxpayer's section 263A(d)(3) election under this paragraph (d)(5) is not a change in method of accounting under sections 446 and 481 and §§ 1.446-1 and 1.481-1 through 1.481-5.

(6) Change from applying exemption under section 263A(i) to making a section 263A(d)(3) election. A taxpayer whose method of accounting is to not capitalize costs under section 263A based on the exemption under section 263A(i), that becomes ineligible to use the exemption under section 263A(i), and is eligible and wants to elect under section 263A(d)(3) for this same taxable year to not capitalize costs under section 263A for any plant produced in the taxpayer's farming business, must make the election in accordance with the applicable administrative guidance as published in the Internal Revenue Bulletin (see § 601.601(d)(2)(ii)(b) of this chapter). An election under section 263A(d)(3) made in accordance with this paragraph (d)(6) is not a change in method of accounting under sections 446 and 481 and §§ 1.446-1 and 1.481-1 through 1.481-5.

(7) Examples. The following examples illustrate the provisions of this paragraph (d):

(e) Exception for certain costs resulting from casualty losses—(1) In general. Section 263A does not require the capitalization of costs that are attributable to the replanting, cultivating, maintaining, and developing of any plants bearing an edible crop for human consumption (including, but not limited to, plants that constitute a grove, orchard, or vineyard) that were lost or damaged while owned by the taxpayer by reason of freezing temperatures, disease, drought, pests, or other casualty (replanting costs). Such replanting costs may be incurred with respect to property other than the property on which the damage or loss occurred to the extent the acreage of the property with respect to which the replanting costs are incurred is not in excess of the acreage of the property on which the damage or loss occurred. This paragraph (e) applies only to the replanting of plants of the same type as those lost or damaged. This paragraph (e) applies to plants replanted on the property on which the damage or loss occurred or property of the same or lesser acreage in the United States irrespective of differences in density between the lost or damaged and replanted plants. Plants bearing crops for human consumption are those crops normally eaten or drunk by humans. Thus, for example, costs incurred with respect to replanting plants bearing jojoba beans do not qualify for the exception provided in this paragraph (e) because that crop is not normally eaten or drunk by humans.

(2) Ownership. Replanting costs described in paragraph (e)(1) of this section generally must be incurred by the taxpayer that owned the property at the time the plants were lost or damaged. Paragraph (e)(1) of this section will apply, however, to costs incurred by a person other than the taxpayer that owned the plants at the time of damage or loss if—

(i) The taxpayer that owned the plants at the time the damage or loss occurred owns an equity interest of more than 50 percent in such plants at all times during the taxable year in which the replanting costs are paid or incurred; and

(ii) Such other person owns any portion of the remaining equity interest and materially participates in the replanting, cultivating, maintaining, or developing of such plants during the taxable year in which the replanting costs are paid or incurred. A person will be treated as materially participating for purposes of this provision if such person would otherwise meet the requirements with respect to material participation within the meaning of section 2032A(e)(6).

(3) Examples. The following examples illustrate the provisions of this paragraph (e):

(4) Special rule for citrus and almond groves—(i) In general. The exception in this paragraph (e) is available with respect to replanting costs of a citrus or almond grove incurred prior to the close of the fourth taxable year after replanting, notwithstanding the taxpayer's election to have section 263A not apply (described in paragraph (d) of this section).

(ii) Example. The following example illustrates the provisions of this paragraph (e)(4):

(5) Special temporary rule for citrus plants lost by reason of casualty. Section 263A(d)(2)(A) provides that if plants bearing an edible crop for human consumption were lost or damaged while in the hands of the taxpayer by reason of freezing temperatures, disease, drought, pests, or casualty, section 263A does not apply to any costs of the taxpayer of replanting plants bearing the same type of crop (whether on the same parcel of land on which such lost or damaged plants were located or any other parcel of land of the same acreage in the United States). The rules of this paragraph (e)(5) apply to certain costs that are paid or incurred after December 22, 2017, and on or before December 22, 2027, to replant citrus plants after the loss or damage of citrus plants. Notwithstanding paragraph (e)(2) of this section, in the case of replanting citrus plants after the loss or damage of citrus plants by reason of freezing temperatures, disease, drought, pests, or casualty, section 263A does not apply to replanting costs paid or incurred by a taxpayer other than the owner described in section 263A(d)(2)(A) if—

(i) The owner described in section 263A(d)(2)(A) has an equity interest of not less than 50 percent in the replanted citrus plants at all times during the taxable year in which such amounts were paid or incurred and the taxpayer holds any part of the remaining equity interest; or

(ii) The taxpayer acquired the entirety of the equity interest in the land of that owner described in section 263A(d)(2)(A) and on which land the lost or damaged citrus plants were located at the time of such loss or damage, and the replanting is on such land.

(f) Change in method of accounting. Except as provided in paragraphs (d)(5) and (6) of this section, any change in a taxpayer's method of accounting necessary to comply with this section is a change in method of accounting to which the provisions of sections 446 and 481 and § 1.446-1 through 1.446-7 and § 1.481-1 through § 1.481-3 apply.

(g) Applicability dates—(1) In general. In the case of property that is not inventory in the hands of the taxpayer, this section is applicable to costs incurred after August 21, 2000 in taxable years ending after August 21, 2000. In the case of inventory property, this section is applicable to taxable years beginning after August 21, 2000.

(2) Changes made by Tax Cuts and Jobs Act (Pub. L. 115-97). Paragraphs (a)(3), (d)(5), (d)(6), and (e)(5) of this section apply for taxable years beginning on or after January 5, 2021. However, for a taxable year beginning after December 31, 2017, and before January 5, 2021, a taxpayer may apply the paragraphs described in the first sentence of this paragraph (g)(2), provided that the taxpayer follows all the applicable rules contained in the regulations under section 263A for such taxable year and all subsequent taxable years.