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Introduction

SECTION 5. SAFE HARBOR METHOD

Internal Revenue Bulletin 2011-18 · 2026-10-03 edition · updated 2026-10-04 · United States

OF ACCOUNTING

The Service will not challenge a taxpayer’s classification of assets for depreciation purposes as specified in this section 5. .01 The following wireless telecommunication assets located at the taxpayer’s MTSO as included in an asset class of Rev. Proc. 87–56 unless otherwise stated:

(1) MTSO building (including its structural components) as nonresidential real property with a recovery period of 39 years for purposes of § 168(a) and 40 years for purposes of § 168(g);

(2) Cabling (for example, copper T–1 lines or fiber cabling) connecting the MTSO with cell sites or the public switched telephone network as property to which § 168(e)(3)(E)(ii) applies and, therefore, with a recovery period of 15 years for purposes of § 168(a) and 24 years for purposes of § 168(g);

(3) Computer-based switching equipment and related equipment at the MTSO (including the computer-based switching equipment, base station controllers (or generational equivalent), radio network controllers, mobility managers, operations and management platforms, protocol handlers, vocoders, modems, cross-connects, optical-cross connect bays, and associated cables) in asset class 48.121 with a

2011–18 I.R.B. 738 May 2, 2011

in section 5 of Rev. Proc. 2011–22 and any collateral change to the depreciation methods for all, or some of, the assets listed in that section.

(2) Waiver of scope limitations . The scope limitations in section 4.02 of this revenue procedure do not apply to a taxpayer that changes to the safe harbor method of accounting provided in section 5 of Rev. Proc. 2011–22 for its first or second taxable year ending after December 30, 2010.

(3) Concurrent automatic change . A taxpayer that wants to make this change for more than one asset for the same year of change should file a single Form 3115 for all such assets and provide a single net § 481(a) adjustment for all the changes included in that Form 3115. If one or more of the changes in that single Form 3115 generate a negative § 481(a) adjustment and other changes in that same Form 3115 generate a positive § 481(a) adjustment, the taxpayer may provide a single negative § 481(a) adjustment for all the changes that are included in that Form 3115 generating such adjustment and a single positive § 481(a) adjustment for all the changes that are included in that Form 3115 generating such adjustment.

(4) Ogden copy of Form 3115 required in lieu of national office copy . A taxpayer changing its method of accounting under section 6.26 of the APPENDIX must file a signed copy of its completed Form 3115 with the IRS in Ogden, UT, (Ogden copy) in lieu of filing the national office copy no earlier than the first day of the year of change and no later than the date the taxpayer files the original Form 3115 with its federal income tax return for the year of change. See sections 6.02(3)(a)(ii)(B) (providing the general rules) and section 6.02(7)(b) (providing the mailing address) of this revenue procedure.

(5) Designated automatic accounting method change numbers . The designated automatic accounting method change number for a change to the method of accounting provided in Rev. Proc. 2011–22 is “157.” See section 6.02(4) of this revenue procedure.

(6) Contact information . For further information regarding a change under this section, contact Patrick Clinton at (202) 622–4930 (not a toll-free call).

period of 5 years for purposes of § 168(a) and 9.5 years for purposes of § 168(g);

(5) Antenna systems (including the antenna itself, antenna cables, and RET equipment (other than the RET CCU controller described in section 5.02(2) of this revenue procedure) as personal property with no class life with a recovery period of 7 years for purposes of § 168(a) and 12 years for purposes of § 168(g);

(6) Antenna support structure (also known as a tower) affixed to a foundation (for example, a concrete foundation, a building rooftop, or a building wall):

(a) The antenna support structure itself, whether on a building or land, as personal property with no class life with a recovery period of 7 years for purposes of § 168(a) and 12 years for purposes of § 168(g); and

(b) Concrete foundation (including the bolts embedded therein) upon which the antenna support structure is installed in asset class 00.3 with a recovery period of 15 years for purposes of § 168(a) and 20 years for purposes of § 168(g);

(7) Cell site equipment that is not otherwise described in this section 5.02 (including the microwave equipment, alarms, or enhanced 911 service equipment not integrated into or built into a base station controller or base transceiver station, and associated cables) as personal property with no class life with a recovery period of 7 years for purposes of § 168(a) and 12 years for purposes of § 168(g); and

(8) Depreciable land improvements at the cell site not otherwise described in this section 5.02, such as landscaping that is replaced when a related depreciable asset is replaced, fences, and sidewalks in asset class 00.3 with a recovery period of 15 years for purposes of § 168(a) and 20 years for purposes of § 168(g).

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