26 CFR § 1.141-6 - Allocation and accounting rules.
(a) Allocations of proceeds to expenditures, projects, and uses in general -
(2) Allocations of sources to a project and its uses. Except as provided in paragraph (b) of this section (regarding an eligible mixed-use project), if two or more sources of funding (including two or more tax-exempt issues) are allocated to capital expenditures (as defined in § 1.150-1(b)) for a project (as defined in paragraph (a)(3) of this section), those sources are allocated throughout that project to the governmental use and private business use of the project in proportion to the relative amounts of those sources of funding spent on the project.
(3) Definition of project -
(i) In general. For purposes of this section, project means one or more facilities or capital projects, including land, buildings, equipment, or other property, financed in whole or in part with proceeds of the issue.
(ii) Output facilities. If an output facility has multiple undivided ownership interests (respectively owned by governmental persons or by both governmental and non governmental persons), each owner's interest in the facility is treated as a separate facility for purposes of this section, provided that all owners of the undivided ownership interests share the ownership and output in proportion to their contributions to the capital costs of the output facility.
(b) Special allocation rules for eligible mixed-use projects -
(1) In general. The sources of funding allocated to capital expenditures for an eligible mixed-use project (as defined in paragraph (b)(2) of this section) are allocated to undivided portions of the eligible mixed-use project and the governmental use and private business use of the eligible mixed-use project in accordance with this paragraph (b). Qualified equity (as defined in paragraph (b)(3) of this section) is allocated first to the private business use of the eligible mixed-use project and then to governmental use, and proceeds are allocated first to the governmental use and then to private business use, using the percentages of the eligible mixed-use project financed with the respective sources and the percentages of the respective uses. Thus, if the percentage of the eligible mixed-use project financed with qualified equity is less than the percentage of private business use of the project, all of the qualified equity is allocated to the private business use. Proceeds are allocated to the balance of the private business use of the project. Similarly, if the percentage of the eligible mixed-use project financed with proceeds is less than the percentage of governmental use of the project, all of the proceeds are allocated to the governmental use, and qualified equity is allocated to the balance of the governmental use of the project. Further, if proceeds of more than one issue finance the eligible mixed-use project, proceeds of each issue are allocated ratably to the uses to which proceeds are allocated in proportion to the relative amounts of the proceeds of such issues allocated to the eligible mixed-use project. For private business use measured under § 1.141-3(g), qualified equity and proceeds are allocated to the uses of the eligible mixed-use project in each one-year period under § 1.141-3(g)(4). See Example 1 of paragraph (f) of this section.
(2) Definition of eligible mixed-use project. Eligible mixed-use project means a project (as defined in paragraph (a)(3) of this section) that is financed with proceeds of bonds that, when issued, purported to be governmental bonds (as defined in § 1.150-1(b)) (the applicable bonds) and with qualified equity pursuant to the same plan of financing (within the meaning of § 1.150-1(c)(1)(ii)). An eligible mixed-use project must be wholly owned by one or more governmental persons or by a partnership in which at least one governmental person is a partner.
(3) Definition of qualified equity. For purposes of this section, qualified equity means proceeds of bonds that are not tax-advantaged bonds and funds that are not derived from proceeds of a borrowing that are spent on the same eligible mixed-use project as the proceeds of the applicable bonds. Qualified equity does not include equity interests in real property or tangible personal property. Further, qualified equity does not include funds used to redeem or repay governmental bonds. See §§ 1.141-2(d)(2)(ii) and 1.141-12(i) (regarding the effects of certain redemptions as remedial actions).
(4) Same plan of financing. Qualified equity finances a project under the same plan of financing that includes the applicable bonds if the qualified equity pays for capital expenditures of the project on a date that is no earlier than a date on which such expenditures would be eligible for reimbursement by proceeds of the applicable bonds under § 1.150-2(d)(2) (regardless of whether the applicable bonds are reimbursement bonds) and, except for a reasonable retainage (within the meaning of § 1.148-7(h)), no later than the date on which the measurement period begins.
(c) Allocations of private payments. Except as provided in this paragraph (c), private payments for a project are allocated in accordance with § 1.141-4. Payments under an output contract that result in private business use of an eligible mixed-use project are allocated to the same source of funding (notwithstanding § 1.141-4(c)(3)(v) (regarding certain allocations of private payments to equity)) allocated to the private business use from such contract under paragraph (b) of this section.
(d) Allocations of proceeds to common costs of an issue. Proceeds used for expenditures for common costs (for example, issuance costs, qualified guarantee fees, or reasonably required reserve or replacement funds) are allocated in accordance with § 1.141-3(g)(6). Proceeds, as allocated under § 1.141-3(g)(6) to an eligible mixed-use project, are allocated to the uses of the project in the same proportions as the proceeds allocated to the uses under paragraph (b) of this section.
(e) Allocations of proceeds to bonds. In general, proceeds are allocated to bonds in accordance with the rules for allocations of proceeds to bonds for separate purposes of multipurpose issues in § 1.141-13(d). For an issue that is not a multipurpose issue (or is a multipurpose issue for which the issuer has not made a multipurpose allocation), proceeds are allocated to bonds ratably in a manner similar to the allocation of proceeds to projects under paragraph (a)(2) of this section.