See paragraph (b) of this section. Where the taxpayer makes an appropriate election the above rule is applicable for periods since February 28, 1913, and before January 1, 1952. See paragraph (d) of this section. For rule for such periods where no election is made, see paragraph (c) of this section.
Example. On July 1, 2014, A, a calendar-year taxpayer, purchased and placed in service "off-the-shelf" computer software at a cost of $36,000. This computer software is not an amortizable section 197 intangible. Pursuant to section 167(f)(1), the useful life of the computer software is 36 months. It has no salvage value. Computer software placed in service in 2014 is not eligible for the additional first year depreciation deduction provided by section 168(k). A did not deduct any depreciation for the computer software for 2014 and deducted depreciation of $12,000 for the computer software for 2015. As a result, the total amount of depreciation allowed for the computer software as of December 31, 2015, was $12,000. However, the total amount of depreciation allowable for the computer software as of December 31, 2015, is $18,000 ($6,000 for 2014 + $12,000 for 2015). As a result, the unrecovered cost of the computer software as of December 31, 2015, is $18,000 (cost of $36,000 less the depreciation allowable of $18,000 as of December 31, 2015). Accordingly, depreciation for 2016 for the computer software is $12,000 (unrecovered cost of $18,000 divided by the remaining useful life of 18 months as of January 1, 2016, multiplied by 12 full months in 2016).
For the purpose of determining the decrease required by this paragraph, it is immaterial whether or not the amount under subparagraph (1) of this paragraph or the amount under subparagraph (2) of this paragraph would have resulted in a reduction for any taxable year of the taxpayer's taxes.
The cost or other basis is to be adjusted by $16,500 with respect to the years 1952-54, that is, by the amount allowable but not less than the amount allowed which reduced the taxpayer's taxes. An adjustment must also be made with respect to the years 1949-1951, the amount of such adjustment depending upon whether an election was properly made under section 1020, or section 113(d) of the Internal Revenue Code of 1939. If no such election was made, the amount of the adjustment with respect to the years 1949-1951 is $19,500, that is, the amount allowed but not less than the amount allowable. If an election was properly made, the amount of the adjustment with respect to the years 1949-1951 is $19,000, that is, the amount allowable but not less than the amount allowed which reduced the taxpayer's taxes.
(1)-Year | (2)-Amount allowed | (3)-Amount allowed which reduced taxpayer's taxes | (4)-Amount allowable | (5)-Amount allowable but not less than amount allowed | (6)-Amount allowable but not less than amount allowed which reduced taxpayer's taxes |
1949 | $6,000 | $5,500 | $5,000 | $6,000 | $5,500 |
1950 | 7,000 | 7,000 | 6,500 | 7,000 | 7,000 |
1951 | 5,000 | 4,000 | 6,500 | 6,500 | 6,500 |
Total, 1949-1951 | 19,500 | 19,000 | |||
1952 | 6,500 | 6,500 | 6,000 | 6,500 | |
1953 | 5,000 | 4,000 | 4,000 | 4,000 | |
1954 | 4,500 | 4,500 | 6,000 | 6,000 | |
Total, 1952-1954 | 16,500 |
Corporation A, which files its returns on the basis of a calendar year, purchased a building on January 1, 1950, at a cost of $100,000. On the basis of the facts reasonably known to exist at the end of 1950, a period of 50 years should have been used as the correct useful life of the building; nevertheless, depreciation was computed by Corporation A on the basis of a useful life of 25 years, and was allowed for 1950 through 1953 as a deduction in an annual amount of $4,000. The building was sold on January 1, 1954. Corporation A did not make an election under section 1020, or section 113(d) of the Internal Revenue Code of 1939. No part of the amount allowed Corporation A for any of the years 1950 through 1953 resulted in a reduction of Corporation A's taxes. The adjusted basis of the building as of January 1, 1954, is $88,166, computed as follows:
Taxable year | Adjustments to basis as of beginning of taxable year | Adjusted basis on January 1 | Remaining life on January 1 | Depreciation allowable | Depreciation allowed |
1950 | $100,000 | 50 | $2,000 | $4,000 | |
1951 | $4,000 | 96,000 | 49 | 1,959 | 4,000 |
1952 | 8,000 | 92,000 | 48 | 1,917 | 4,000 |
1953 | 9,917 | 90,083 | 47 | 1,917 | 4,000 |
1954 | 11,834 | 88,166 |
The facts are the same as in example (2), except that Corporation A made a proper election under section 1020. In such case, the adjusted basis of the building as of January 1, 1954, is $92,000 computed as follows:
Taxable year | Adjustments to basis as of beginning of taxable year | Adjusted basis on January 1 | Remaining life on January 1 | Depreciation allowable | Depreciation allowed |
1950 | $100,000 | 50 | $2,000 | $4,000 | |
1951 | $2,000 | 98,000 | 49 | 2,000 | 4,000 |
1952 | 4,000 | 96,000 | 48 | 2,000 | 4,000 |
1953 | 6,000 | 94,000 | 47 | 2,000 | 4,000 |
1954 | 8,000 | 92,000 |
If it is assumed that in example (2), or in example (3), all of the deduction allowed Corporation A for 1953 had resulted in a reduction of A's taxes, the adjustment to the basis of the building for depreciation for 1953 would reflect the entire $4,000 deduction. In such case, the adjusted basis of the building as of January 1, 1954, would be $86,083 in example (2), and $90,000 in example (3).
Taxable year | Adjustments to basis as of beginning of taxable year | Adjusted basis on January 1 | Remaining life on January 1 | Depreciation allowable | Depreciation allowed |
1950 | $100,000 | 50 | $2,000 | $4,000 | |
1951 | $4,000 | 96,000 | 49 | 1,959 | 4,000 |
1952 | 5,959 | 94,041 | 48 | 1,959 | 4,000 |
1953 | 7,918 | 92,082 | 47 | 1,959 | 4,000 |
1954 | 9,877 | 90,123 |
26 C.F.R. §1.1016-3