Sec. 1.446-1 General rule for methods of accounting.

(A) Generally, under an accrual method, income is to be included for the taxable year when all the events have occurred that fix the right to receive the income and the amount of the income can be determined with reasonable accuracy. (See §1.451-1 for rules relating to the taxable year of inclusion.) Under such a method, a liability is incurred, and generally is taken into account for Federal income tax purposes, in the taxable year in which all the events have occurred that establish the fact of the liability, the amount of the liability can be determined with reasonable accuracy, and economic performance has occurred with respect to the liability. (See paragraph (a)(2)(iii)(A) of section 1.461-1 for examples of liabilities that may not be taken into account until after the taxable year incurred, and see sections 1.461-4 through 1.461-6 for rules relating to economic performance.) Applicable provisions of the Code, the Income Tax Regulations, and other guidance published by the Secretary prescribe the manner in which a liability that has been incurred is taken into account. For example, section 162 provides that a deductible liability generally is taken into account in the taxable year incurred through a deduction from gross income. As a further example, under section 263 or 263A, a liability that relates to the creation of an asset having a useful life extending substantially beyond the close of the taxable year is taken into account in the taxable year incurred through capitalization (within the meaning of section 1.263A-1(c)(3)) and may later affect the computation of taxable income through depreciation or otherwise over a period including subsequent taxable years, in accordance with applicable Internal Revenue Code sections and related guidance.

(B) The term "liability" includes any item allowable as a deduction, cost, or expense for Federal income tax purposes. In addition to allowable deductions, the term includes any amount otherwise allowable as a capitalized cost, as a cost taken into account in computing cost of goods sold, as a cost allocable to a long-term contract, or as any other cost or expense. Thus, for example, an amount that a taxpayer expends or will expend for capital improvements to property must be incurred before the taxpayer may take the amount into account in computing its basis in the property. The term "liability" is not limited to items for which a legal obligation to pay exists at the time of payment. Thus, for example, amounts prepaid for goods or services and amounts paid without a legal obligation to do so may not be taken into account by an accrual basis taxpayer any earlier than the taxable year in which those amounts are incurred.

(C) No method of accounting is acceptable unless, in the opinion of the Commissioner, it clearly reflects income. The method used by the taxpayer in determining when income is to be accounted for will generally be acceptable if it accords with generally accepted accounting principles, is consistently used by the taxpayer from year to year, and is consistent with the Income Tax Regulations. For example, a taxpayer engaged in a manufacturing business may account for sales of the taxpayer's product when the goods are shipped, when the product is delivered or accepted, or when title to the goods passes to the customers, whether or not billed, depending on the method regularly employed in keeping the taxpayer's books.

(a) In accordance with the following rules, any combination of the foregoing methods of accounting will be permitted in connection with a trade or business if such combination clearly reflects income and is consistently used. Where a combination of methods of accounting includes any special methods, such as those referred to in subdivision (iii) of this subparagraph, the taxpayer must comply with the requirements relating to such special methods. A taxpayer using an accrual method of accounting with respect to purchases and sales may use the cash method in computing all other items of income and expense. However, a taxpayer who uses the cash method of accounting in computing gross income from his trade or business shall use the cash method in computing expenses of such trade or business. Similarly, a taxpayer who uses an accrual method of accounting in computing business expenses shall use an accrual method in computing items affecting gross income from his trade or business.

(b) A taxpayer using one method of accounting in computing items of income and deductions of his trade or business may compute other items of income and deductions not connected with his trade or business under a different method of accounting.

(A) The taxpayer qualifies as a small business taxpayer for the taxable year under section 471(c), or

(B) Otherwise authorized under paragraph (c)(2)(ii) of this section.

(a) A change in the method of accounting includes a change in the overall plan of accounting for gross income or deductions or a change in the treatment of any material item used in such overall plan. Although a method of accounting may exist under this definition without the necessity of a pattern of consistent treatment of an item, in most instances a method of accounting is not established for an item without such consistent treatment. A material item is any item that involves the proper time for the inclusion of the item in income or the taking of a deduction. Changes in method of accounting include a change from the cash receipts and disbursement method to an accrual method, or vice versa, a change involving the method or basis used in the valuation of inventories (see sections 471 and 472 and the regulations under sections 471 and 472), a change from the cash or accrual method to a long-term contract method, or vice versa (see § 1.460-4), certain changes in computing depreciation or amortization (see paragraph (e)(2)(ii)(d) of this section), a change involving the adoption, use or discontinuance of any other specialized method of computing taxable income, such as the crop method, and a change where the Internal Revenue Code and regulations under the Internal Revenue Code specifically require that the consent of the Commissioner must be obtained before adopting such a change.

(b) A change in method of accounting does not include correction of mathematical or posting errors, or errors in the computation of tax liability (such as errors in computation of the foreign tax credit, net operating loss, percentage depletion, or investment credit). Also, a change in method of accounting does not include adjustment of any item of income or deduction that does not involve the proper time for the inclusion of the item of income or the taking of a deduction. For example, corrections of items that are deducted as interest or salary, but that are in fact payments of dividends, and of items that are deducted as business expenses, but that are in fact personal expenses, are not changes in method of accounting. In addition, a change in the method of accounting does not include an adjustment with respect to the addition to a reserve for bad debts. Although such adjustment may involve the question of the proper time for the taking of a deduction, such items are traditionally corrected by adjustment in the current and future years. For the treatment of the adjustment of the addition to a bad debt reserve (for example, for banks under section 585 of the Internal Revenue Code), see the regulations under section 166 of the Internal Revenue Code. A change in the method of accounting also does not include a change in treatment resulting from a change in underlying facts. For further guidance on changes involving depreciable or amortizable assets, see paragraph (e)(2)(ii)(d) of this section and §1.1016-3(h).

(c) A change in an overall plan or system of identifying or valuing items in inventory is a change in method of accounting. Also a change in the treatment of any material item used in the overall plan for identifying or valuing items in inventory is a change in method of accounting.

(d) Changes involving depreciable or amortizable assets

Example 1. Although the sale of merchandise is an income producing factor, and therefore inventories are required, a taxpayer in the retail jewelry business reports his income on the cash receipts and disbursements method of accounting. A change from the cash receipts and disbursements method of accounting to the accrual method of accounting is a change in the overall plan of accounting and thus is a change in method of accounting.

Example 2. A taxpayer in the wholesale dry goods business computes its income and expenses on the accrual method of accounting and files its Federal income tax returns on such basis except for real estate taxes which have been reported on the cash receipts and disbursements method of accounting. A change in the treatment of real estate taxes from the cash receipts and disbursements method to the accrual method is a change in method of accounting because such change is a change in the treatment of a material item within his overall accounting practice.

Example 3. A taxpayer in the wholesale dry goods business computes its income and expenses on the accrual method of accounting and files its Federal income tax returns on such basis. Vacation pay has been deducted in the year in which paid because the taxpayer did not have a completely vested vacation pay plan, and, therefore, the liability for payment did not accrue until that year. Subsequently, the taxpayer adopts a completely vested vacation pay plan that changes its year for accruing the deduction from the year in which payment is made to the year in which the liability to make the payment now arises. The change for the year of deduction of the vacation pay plan is not a change in method of accounting but results, instead, because the underlying facts (that is, the type of vacation pay plan) have changed.

Example 4. From 1968 through 1970, a taxpayer has fairly allocated indirect overhead costs to the value of inventories on a fixed percentage of direct costs. If the ratio of indirect overhead costs to direct costs increases in 1971, a change in the underlying facts has occurred. Accordingly, an increase in the percentage in 1971 to fairly reflect the increase in the relative level of indirect overhead costs is not a change in method of accounting but is a change in treatment resulting from a change in the underlying facts.

Example 5. A taxpayer values inventories at cost. A change in the basis for valuation of inventories from cost to the lower of cost or market is a change in an overall practice of valuing items in inventory. The change, therefore, is a change in method of accounting for inventories.

Example 6. A taxpayer in the manufacturing business has for many taxable years valued its inventories at cost. However, cost has been improperly computed since no overhead costs have been included in valuing the inventories at cost. The failure to allocate an appropriate portion of overhead to the value of inventories is contrary to the requirement of the Internal Revenue Code and the regulations under the Internal Revenue Code. A change requiring appropriate allocation of overhead is a change in method of accounting because it involves a change in the treatment of a material item used in the overall practice of identifying or valuing items in inventory.

Example 7. A taxpayer has for many taxable years valued certain inventories by a method which provides for deducting 20 percent of the cost of the inventory items in determining the final inventory valuation. The 20 percent adjustment is taken as a "reserve for price changes." Although this method is not a proper method of valuing inventories under the Internal Revenue Code or the regulations under the Internal Revenue Code, it involves the treatment of a material item used in the overall practice of valuing inventory. A change in such practice or procedure is a change of method of accounting for inventories.

Example 8. A taxpayer has always used a base stock system of accounting for inventories. Under this system a constant price is applied to an assumed constant normal quantity of goods in stock. The base stock system is an overall plan of accounting for inventories which is not recognized as a proper method of accounting for inventories under the regulations. A change in this practice is, nevertheless, a change of method of accounting for inventories.

Example 9. In 2003, A1, a calendar year taxpayer engaged in the trade or business of manufacturing knitted goods, purchased and placed in service a building and its components at a total cost of $10,000,000 for use in its manufacturing operations. A1 classified the $10,000,000 as nonresidential real property under section 168(e). A1 elected not to deduct the additional first year depreciation provided by section 168(k) on its 2003 Federal tax return. As a result, on its 2003, 2004, and 2005 Federal tax returns, A1 depreciated the $10,000,000 under the general depreciation system of section 168(a), using the straight line method of depreciation, a 39-year recovery period, and the mid-month convention. In 2006, A1 completes a cost segregation study on the building and its components and identifies items that cost a total of $1,500,000 as section 1245 property. As a result, the $1,500,000 should have been classified in 2003 as 5-year property under section 168(e) and depreciated on A1's 2003, 2004, and 2005 Federal tax returns under the general depreciation system, using the 200-percent declining balance method of depreciation, a 5-year recovery period, and the half-year convention. Pursuant to paragraph (e)(2)(ii)(d)(2)(i) of this section, A1's change to this depreciation method, recovery period, and convention is a change in method of accounting. This method change results in a section 481 adjustment. The useful life exception under paragraph (e)(2)(ii)(d)(3)(i) of this section does not apply because the assets are depreciated under section 168.

Example 10. In 2003, B, a calendar year taxpayer, purchased and placed in service new equipment at a total cost of $1,000,000 for use in its plant located outside the United States. The equipment is 15-year property under section 168(e) with a class life of 20 years. The equipment is required to be depreciated under the alternative depreciation system of section 168(g). However, B incorrectly depreciated the equipment under the general depreciation system of section 168(a), using the 150-percent declining balance method, a 15-year recovery period, and the half-year convention. In 2010, the IRS examines B's 2007 Federal income tax return and changes the depreciation of the equipment to the alternative depreciation system, using the straight line method of depreciation, a 20-year recovery period, and the half-year convention. Pursuant to paragraph (e)(2)(ii)(d)(2)(i) of this section, this change in depreciation method and recovery period made by the IRS is a change in method of accounting. This method change results in a section 481 adjustment. The useful life exception under paragraph (e)(2)(ii)(d)(3)(i) of this section does not apply because the assets are depreciated under section 168.

Example 11. In May 2003, C, a calendar year taxpayer, purchased and placed in service equipment for use in its trade or business. C never held this equipment for sale. However, C incorrectly treated the equipment as inventory on its 2003 and 2004 Federal tax returns. In 2005, C realizes that the equipment should have been treated as a depreciable asset. Pursuant to paragraph (e)(2)(ii)(d)(2) of this section, C's change in the treatment of the equipment from inventory to a depreciable asset is a change in method of accounting. This method change results in a section 481 adjustment.

Example 12. Since 2003, D, a calendar year taxpayer, has used the distribution fee period method to amortize distributor commissions and, under that method, established pools to account for the distributor commissions (for further guidance, see Rev. Proc. 2000-38 (2000-2 C.B. 310) and § 601.601(d)(2)(ii)(b) of this chapter). A change in the accounting of distributor commissions under the distribution fee period method from pooling to single asset accounting is a change in method of accounting pursuant to paragraph (e)(2)(ii)(d)(2)(vi) of this section. This method change results in no section 481 adjustment because the change is from one permissible method to another permissible method.

Example 13. Since 2003, E, a calendar year taxpayer, has accounted for items of MACRS property that are mass assets in pools. Each pool includes only the mass assets that are placed in service by E in the same taxable year. E is able to identify the cost basis of each asset in each pool. None of the pools are general asset accounts under section 168(i)(4) and the regulations under section 168(i)(4). E identified any dispositions of these mass assets by specific identification. Because of changes in E's recordkeeping in 2006, it is impracticable for E to continue to identify disposed mass assets using specific identification. As a result, E wants to change to a first-in, first-out method under which the mass assets disposed of in a taxable year are deemed to be from the pool with the earliest placed-in-service year in existence as of the beginning of the taxable year of each disposition. Pursuant to paragraph (e)(2)(ii)(d)(2)(vii) of this section, this change is a change in method of accounting. This method change results in no section 481 adjustment because the change is from one permissible method to another permissible method.

Example 14. In August 2003, F, a calendar year taxpayer, purchased and placed in service a copier for use in its trade or business. F incorrectly classified the copier as 7-year property under section 168(e). F elected not to deduct the additional first year depreciation provided by section 168(k) on its 2003 Federal tax return. As a result, on its 2003 and 2004 Federal tax returns, F depreciated the copier under the general depreciation system of section 168(a), using the 200-percent declining balance method of depreciation, a 7-year recovery period, and the half-year convention. In 2005, F realizes that the copier is 5-year property and should have been depreciated on its 2003 and 2004 Federal tax returns under the general depreciation system using a 5-year recovery period rather than a 7-year recovery period. Pursuant to paragraph (e)(2)(ii)(d)(2)(i) of this section, F's change in recovery period from 7 to 5 years is a change in method of accounting. This method change results in a section 481 adjustment. The useful life exception under paragraph (e)(2)(ii)(d)(3)(i) of this section does not apply because the copier is depreciated under section 168.

Example 15. In 2004, G, a calendar year taxpayer, purchased and placed in service an intangible asset that is not an amortizable section 197 intangible and that is not described in section 167(f). G amortized the cost of the intangible asset under section 167(a) using the straight line method of depreciation and a determinable useful life of 13 years. The safe harbor useful life of 15 or 25 years under § 1.167(a)-3(b) does not apply to the intangible asset. In 2008, because of changing conditions, G changes the remaining useful life of the intangible asset to 2 years. Pursuant to paragraph (e)(2)(ii)(d)(3)(i) of this section, G's change in useful life is not a change in method of accounting because the intangible asset is depreciated under section 167 and G is not changing to or from a useful life that is specifically assigned by the Internal Revenue Code, the regulations under the Internal Revenue Code, or other guidance published in the Internal Revenue Bulletin.

Example 16. In July 2003, H, a calendar year taxpayer, purchased and placed in service "off-the-shelf computer software and a new computer. The cost of the new computer and computer software are separately stated. H incorrectly included the cost of this software as part of the cost of the computer, which is 5-year property under section 168(e). On its 2003 Federal tax return, H elected to depreciate its 5-year property placed in service in 2003 under the alternative depreciation system of section 168(g) and H elected not to deduct the additional first year depreciation provided by section 168(k). The class life for a computer is 5 years. As a result, because H included the cost of the computer software as part of the cost of the computer hardware, H depreciated the cost of the software under the alternative depreciation system, using the straight line method of depreciation, a 5-year recovery period, and the half-year convention. In 2005, H realizes that the cost of the software should have been amortized under section 167(f)(1), using the straight line method of depreciation, a 36-month useful life, and a monthly convention. H's change from 5-years to 36-months is a change in method of accounting because H is changing to a useful life that is specifically assigned by section 167(f)(1). The change in convention from the half-year to the monthly convention also is a change in method of accounting. Both changes result in a section 481 adjustment.

Example 17. On May 1, 2003, I2, a calendar year taxpayer, purchased and placed in service new equipment at a total cost of $500,000 for use in its business. The equipment is 5-year property under section 168(e) with a class life of 9 years and is qualified property under section 168(k)(2). I2 did not place in service any other depreciable property in 2003. Section 168(g)(1)(A) through (D) do not apply to the equipment. I2 intended to elect the alternative depreciation system under section 168(g) for 5-year property placed in service in 2003. However, I2 did not make the election. Instead, I2 deducted on its 2003 Federal tax return the 30-percent additional first year depreciation attributable to the equipment and, on its 2003 and 2004 Federal tax returns, depreciated the remaining adjusted depreciable basis of the equipment under the general depreciation system under 168(a), using the 200-percent declining balance method, a 5-year recovery period, and the half-year convention. In 2005, I2 realizes its failure to make the alternative depreciation system election in 2003 and files a Form 3115, "Application for Change in Accounting Method," to change its method of depreciating the remaining adjusted depreciable basis of the 2003 equipment to the alternative depreciation system. Because this equipment is not required to be depreciated under the alternative depreciation system, I2 is attempting to make an election under section 168(g)(7). However, this election must be made in the taxable year in which the equipment is placed in service (2003) and, consequently, I2 is attempting to make a late election under section 168(g)(7). Accordingly, I2's change to the alternative depreciation system is not a change in accounting method pursuant to paragraph (e)(2)(ii)(d)(3)(iii) of this section. Instead, 12 must submit a request for a private letter ruling under § 301.9100-3 of this chapter, requesting an extension of time to make the alternative depreciation system election on its 2003 Federal tax return.

Example 18. On December 1, 2004, J, a calendar year taxpayer, purchased and placed in service 20 previously-owned adding machines. For the 2004 taxable year, J incorrectly classified the adding machines as items in its "suspense" account for financial and tax accounting purposes. Assets in this suspense account are not depreciated until reclassified to a depreciable fixed asset account. In January 2006, J realizes that the cost of the adding machines is still in the suspense account and reclassifies such cost to the appropriate depreciable fixed asset account. As a result, on its 2004 and 2005 Federal tax returns, J did not depreciate the cost of the adding machines. Pursuant to paragraph (e)(2)(ii)(d)(2) of this section, J's change in the treatment of the adding machines from nondepreciable assets to depreciable assets is a change in method of accounting. The placed-in-service date exception under paragraph (e)(2)(ii)(d)(3)(v) of this section does not apply because the adding machines were incorrectly classified in a nondepreciable suspense account. This method change results in a section 481 adjustment.

Example 19. In December 2003, K, a calendar year taxpayer, purchased and placed in service equipment for use in its trade or business. However, K did not receive the invoice for this equipment until January 2004. As a result, K classified the equipment on its fixed asset records as being placed in service in January 2004. On its 2004 and 2005 Federal tax returns, K depreciated the cost of the equipment. In 2006, K realizes that the equipment was actually placed in service during the 2003 taxable year and, therefore, depreciation should have began in the 2003 taxable year instead of the 2004 taxable year. Pursuant to paragraph (e)(2)(ii)(d)(3)(v) of this section, K's change in the placed-in-service date of the equipment is not a change in method of accounting.

(A) For any change in depreciation or amortization that is a change in method of accounting, this section applies to such a change in method of accounting made by a taxpayer for a depreciable or amortizable asset placed in service by the taxpayer in a taxable year ending on or after December 30, 2003; and

(B) For any change in depreciation or amortization that is not a change in method of accounting, this section applies to such a change made by a taxpayer for a depreciable or amortizable asset placed in service by the taxpayer in a taxable year ending on or after December 30, 2003.