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Introduction

SECTION 5. DEFINITIONS

Internal Revenue Bulletin 2006-45 · 2026-10-03 edition · updated 2026-10-04 · United States

The following definitions apply solely for purposes of this revenue procedure:

.01 Taxpayer. The term “taxpayer” has the same meaning as the term “person” as defined in § 7701(a)(1) ( e.g., an individual, trust, estate, partnership, association, or corporation) rather than the meaning of the term “taxpayer” as defined in § 7701(a)(14) (any person subject to tax).

.02 Partnership. A partnership is any entity classified as a partnership for purposes of § 7701(a)(3) or the regulations thereunder.

.03 Electing S Corporation. An “electing S corporation” is a corporation attempting to make an S corporation election for the short period (as defined in section 5.11 of this revenue procedure). See Rev. Proc. 2006–45, 2006–45 I.R.B. 851, for procedures for automatic approval to change an annual accounting period by corporations attempting to make an S corporation election for the taxable year immediately following the first effective year (as defined in section 5.10 of this revenue procedure).

.04 PSC. A PSC is a personal service corporation as defined in § 441(i)(2). For purposes of this revenue procedure, a PSC does not include a corporation that has a required taxable year under a provision of the Code other than § 441(i) ( e.g., a specified foreign corporation as defined in § 898(b)(1)).

.05 Required Taxable Year. The “required taxable year” is the taxable year determined under § 706(b) in the case of a partnership, § 644 in the case of a trust, § 1378 in the case of an S corporation or an electing S corporation, or § 441(i) in the case of a PSC, without taking into account any taxable year that is allowable by reason of a business purpose (including a grandfathered fiscal year as defined in sec

November 6, 2006 864 2006–45 I.R.B.

petition with the Tax Court expires, or the date of the notice of claim disallowance.

(b) An examination does not end as a result of the early referral of an issue to an area office under the provisions of Rev. Proc. 99–28, 1999–2 C.B. 109.

(c) An examination resumes on the date the taxpayer (or its representative) is notified by an appeals officer (or otherwise) that the case has been referred to a field office for reconsideration.

(2) Partnerships and S corporations subject to TEFRA . For a partnership or S corporation that is subject to the TEFRA unified audit and litigation provisions (note that an S corporation is not subject to the TEFRA unified audit and litigation provisions for taxable years beginning after December 31, 1996; see Small Business Job Protection Act of 1996, Pub. L. No. 104–188, § 1317(a), 110 Stat. 1755, 1787 (1996)), an examination begins on the date that the notice of the beginning of an administrative proceeding is sent or personally delivered to the Tax Matters Partner/Tax Matters Person (TMP). An examination ends:

(a) in a case in which the Service accepts the partnership or S corporation return as filed, on the date of the “no adjustments” letter or the “no change” notice of final administrative adjustment sent to the TMP;

(b) in a case in which no formal notice is given, the period of limitations on assessment has expired for all partners with respect to the partnership items of the partnership;

(c) in a fully agreed case, when all the partners or shareholders execute a Form 870–P, 870–L, 870–S, or any variation thereof; or

(d) in an unagreed or a partially agreed case, on the earliest of the date the TMP (or its representative) is notified by an appeals officer that the case has been referred to an area office from a field office, the date the TMP (or a partner, member, or shareholder) requests judicial review, or the date on which the period for requesting judicial review expires.

.14 Issue Under Consideration.

(1) During an examination . A taxpayer’s annual accounting period is an issue under consideration for the taxable years under examination if the taxpayer receives written notification (for example,

ness as its predecessor, the taxpayer must use the gross receipts from sales and services of its predecessor for purposes of computing the 25-percent gross receipts test.

(c) If the taxpayer (including any predecessor organization) does not have a 47-month period of gross receipts (36-month period for requested taxable year plus additional 11-month period for comparing requested taxable year with other potential taxable years), then it cannot establish a natural business year under this revenue procedure.

(d) If the requested taxable year is a 52–53-week taxable year, the calendar month ending nearest to the last day of the 52–53-week taxable year is treated as the last month of the requested taxable year for purposes of computing the 25-percent gross receipts test.

.08 Ownership Taxable Year. For an S corporation or electing S corporation, an “ownership taxable year” is the taxable year (if any) that, as of the first day of the first effective year, constitutes the taxable year of one or more shareholders (including any shareholder that concurrently changes to such taxable year) holding more than 50-percent of the corporation’s issued and outstanding shares of stock. Under principles similar to § 1.706–1(b)(5) for determining the taxable year of a partnership, a shareholder that is tax-exempt under § 501(a) is disregarded if such shareholder is not subject to tax on any income attributable to the S corporation. Tax-exempt shareholders are not disregarded, however, if the S corporation is wholly-owned by such tax-exempt entities. A shareholder in an S corporation or electing S corporation that wants to concurrently change its taxable year must follow the instructions generally applicable to taxpayers changing their taxable years contained in § 1.442–1(b), Rev. Proc. 2002–39 (or any successor), or any other applicable administrative procedure published by the Commissioner.

.09 Grandfathered Fiscal Year. A “grandfathered fiscal year” is a fiscal year (other than a year that resulted in a three-month or less deferral of income) that a partnership or an S corporation received permission to use on or after July 1, 1974, by a letter ruling ( i.e., not by automatic approval).

.10 First Effective Year. The “first effective year” is the first taxable year for which an adoption, change, or retention in annual accounting period is effective. The first effective year generally is the short period required to effect the change. In the case of a short period of 6 days or less, the first effective year is the taxable year that includes such short period under § 1.441–2(b)(2)(ii). The first effective year is also the first taxable year for complying with all the terms and conditions set forth in this revenue procedure necessary to effect the adoption, change, or retention in annual accounting period.

.11 Short Period. In the case of a change in annual accounting period, a taxpayer’s “short period” is the period beginning with the day following the close of the old taxable year and ending with the day preceding the first day of the new taxable year.

.12 Field Office, Area Office, Director. The terms “field office,” “area office,” and “director” have the same meaning as those terms have in Rev. Proc. 2006–1, 2006–1 I.R.B. 1 (or any successor).

.13 Under Examination. (1) In general . (a) Except as provided in section 5.13(2) of this revenue procedure, an examination of a taxpayer with respect to a federal income tax return begins on the date the taxpayer is contacted in any manner by a representative of the Service for the purpose of scheduling any type of examination of the return. An examination ends:

(i) in a case in which the Service accepts the return as filed, on the date of the “no change” letter sent to the taxpayer;

(ii) in a fully agreed case, on the earliest of the date the taxpayer executes a waiver of restrictions on assessment or acceptance of overassessment (for example, Form 870, 4549, or 4605), the date the taxpayer makes a payment of tax that equals or exceeds the proposed deficiency, or the date of the “closing” letter (for example, Letter 891(IN) or 987(DO)) sent to the taxpayer; or

(iii) in an unagreed or a partially agreed case, on the earliest of the date the taxpayer (or its representative) is notified by an area officer that the case has been referred to an area office from a field office, the date the taxpayer files a petition in the Tax Court, the date on which the period for filing a

2006–45 I.R.B. 865 November 6, 2006

S corporation, or PSC changes to or retains a natural business year and that year no longer qualifies as a permitted taxable year, the taxpayer is using an impermissible annual accounting period and must change to a permitted taxable year. Taxpayers qualifying under section 4 of this revenue procedure may request automatic approval for the change under the provisions of this revenue procedure. Other taxpayers must request approval under Rev. Proc. 2002–39 (or any successor).

.06 Changes in Ownership Taxable Year. An S corporation or electing S corporation that adopts, changes to, or retains an ownership taxable year under this revenue procedure must change to a permitted taxable year, or request approval to retain its current taxable year, if, as of the first day of any taxable year, its ownership taxable year changes. S corporations qualifying under section 4 of this revenue procedure may request automatic approval for the change or retention under the provisions of this revenue procedure. Other taxpayers must request approval under Rev. Proc. 2002–39 (or any successor).

.07 52–53-week Taxable Years. If applicable, the taxpayer must comply with § 1.441–2(e) (relating to the timing of taking items into account in those cases where the taxable year of a pass-through entity or PSC ends with reference to the same calendar month as one or more of its partners, shareholders, or employee-owners).

.08 Creation of Net Operating Loss or Capital Loss. In the case of a PSC changing its annual accounting period, if the PSC generates a net operating loss (NOL) or capital loss (CL) in the short period required to effect the change in annual accounting period, the PSC may not carry the NOL or CL back, but must carry it over in accordance with the provisions of §§ 172 and 1212, respectively, beginning with the first taxable year after the short period. However, except as provided in § 280H and the regulations thereunder, the short period NOL or CL must be carried back or carried over in accordance with § 172 or 1212, respectively, if it is either (a) $50,000 or less; or (b) less than the NOL or CL, respectively, generated for the full 12-month period beginning with the first day of the short period. The taxpayer must wait until this 12-month period has expired

by examination plan, information document request (IDR), or notification of proposed adjustments or income tax examination changes) from the examining agent(s) specifically citing the taxpayer’s annual accounting period as an issue under consideration. For example, a taxpayer’s annual accounting period is an issue under consideration as a result of an examination plan that identifies the propriety of the taxpayer’s annual accounting period as a matter to be examined. The question of whether the taxpayer’s annual accounting period is an issue under consideration may be referred to the national office as a request for technical advice under the provisions of Rev. Proc. 2006–2, 2006–1 I.R.B. 89 (or any successor).

(2) Before an area office . A taxpayer’s annual accounting period is an issue under consideration for the taxable years before an area office if the taxpayer’s annual accounting period is included as an item of adjustment in the examination report referred to the area office or is specifically identified in writing to the taxpayer by the area office.

(3) Before a federal court . A taxpayer’s annual accounting period is an issue under consideration for the taxable years before a federal court if the taxpayer’s annual accounting period is an item included in the statutory notice of deficiency, the notice of claim disallowance, the notice of final administrative adjustment, the pleadings (for example, the petition, complaint, or answer) or amendments thereto, or is specifically identified in writing to the taxpayer by the government counsel.

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