SECTION 2. BACKGROUND
Internal Revenue Bulletin 2014-46 · 2026-10-03 edition · updated 2026-10-04 · United States
ACOs and the Shared Savings Program
Section 3022 of the Affordable Care Act amended Title XVIII of the Social Security Act (SSA) (42 U.S.C. 1395 et seq.) by adding a new § 1899, which directs the Secretary of the Department of Health and Human Services (HHS) to establish a Medicare shared savings program that promotes accountability for care of Medicare beneficiaries, improves the coordination of Medicare fee-for-service items and services, and encourages investment in infrastructure and redesigned care processes for high quality and efficient service delivery. Under § 1899(b)(1) of the SSA, groups of health care service providers and suppliers that have established a mechanism for shared governance and that meet criteria specified by HHS are eligible to participate as ACOs under the program.
Section 1899(b)(1) of the SSA provides examples of groups of service providers and suppliers that may form an ACO, including (i) physicians and other health care practitioners (ACO professionals) in a group practice, (ii) a network of individual practices, (iii) a partnership or joint venture arrangement between hospitals and ACO professionals, and (iv) a hospital employing ACO professionals. ACOs eligible to participate in the Shared Savings Program will manage and coordi
nate care for their assigned Medicare feefor-service beneficiaries. Health care service providers and suppliers participating in an ACO will continue to receive Medicare fee-for-service payments in the same manner as such payments would otherwise be made. In addition, an ACO that meets quality performance standards established by HHS and demonstrates that it has achieved savings against an appropriate benchmark of expected average per capita Medicare fee-for-service expenditures will be eligible to receive payments for Medicare shared savings (Shared Savings Program payments) under § 1899(d)(2) of the SSA. Section 1899(i) of the SSA also authorizes the use of other payment models that the HHS Secretary determines will improve the quality and efficiency of items and services for Medicare.
Section 1899(b)(2) of the SSA establishes the following requirements for an ACO to participate in the Shared Savings Program:
(1) The ACO shall be willing to become accountable for the quality, cost, and overall care of the Medicare fee-forservice beneficiaries assigned to it.
(2) The ACO shall enter into an agreement with the HHS Secretary to participate in the Shared Savings Program for not less than a 3-year period.
(3) The ACO shall have a formal legal structure that would allow the organization to receive and distribute Shared Savings Program payments to participating providers of services and suppliers.
(4) The ACO shall include primary care ACO professionals that are sufficient for the number of Medicare fee-forservice beneficiaries assigned to the ACO under § 1899(c). At a minimum, the ACO shall have at least 5,000 such beneficiaries assigned to it under § 1899(c) to be eligible to participate in the Shared Savings Program.
(5) The ACO shall provide the HHS Secretary with such information regarding ACO professionals participating in the ACO as the Secretary determines necessary to support the assignment of Medicare fee-for-service beneficiaries to an ACO, the implementation of quality and the other reporting requirements under § 1899(b)(3), and the determination of Shared Savings Program payments.
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(6) The ACO shall have in place a leadership and management structure that includes clinical and administrative systems.
(7) The ACO shall define processes to promote evidence-based medicine and patient engagement, report on quality and cost measures, and coordinate care, such as through the use of telehealth, remote patient monitoring, and other such enabling technologies.
(8) The ACO shall demonstrate to the HHS Secretary that it meets patientcenteredness criteria specified by the Secretary, such as the use of patient and caregiver assessments or the use of individualized care plans.
On November 2, 2011, the Centers for Medicare & Medicaid Services (CMS), the agency within HHS that administers the Medicare program, published final regulations addressing § 1899 of the SSA (76 FR 67802). The regulations contain specific eligibility criteria for entities to qualify as ACOs under the Shared Savings Program and describe quality measures, reporting requirements, and monitoring by CMS. The regulations require the ACO to be a legal entity formed under applicable State, Federal, or Tribal law, identified by a taxpayer identification number, and authorized in each State in which it operates for purposes of (1) receiving and distributing shared savings; (2) repaying shared losses or other monies determined to be owed to CMS; (3) establishing, reporting, and ensuring provider compliance with health care quality criteria, including quality performance standards; and (4) fulfilling other ACO functions identified in the regulations. The regulations require an ACO to provide for meaningful participation in the composition and control of the ACO’s governing body by ACO participants (or their designated representatives). In addition, the regulations generally require that the ACO’s governing body include a Medicare beneficiary representative(s) served by the ACO who does not have a conflict of interest with the ACO.
The regulations require an ACO seeking to participate in the Shared Savings Program to submit a written application to CMS describing how the ACO plans to use and distribute any Shared Savings Program payments and how that plan
would contribute to achieving the specific goals of the Shared Savings Program and the general aims of better care for individuals, better health for populations, and lower growth in expenditures.
Finally, consistent with the authorization in § 1899(i) of the SSA of alternative payment models, the regulations provide a “two-sided model” under which participating ACOs not only would be eligible to share in cost savings at higher rates but also would be required to repay losses resulting from spending that exceeds a benchmark of expected average per capita Medicare fee-for-service expenditures (Shared Savings Program losses).
Private Business Use of Tax-Exempt Bonds
Section 103(a) of the Code provides that, except as provided in § 103(b) of the Code, gross income does not include interest on any State or local bond. Section 103(b)(1) of the Code provides that § 103(a) of the Code shall not apply to any private activity bond that is not a qualified bond (within the meaning of section 141 of the Code).
Section 141(a) of the Code provides that the term “private activity bond” means any bond issued as part of an issue (1) that meets the private business use test and private security or payment test, or (2) that meets the private loan financing test.
Section 141(b)(1) of the Code provides generally that an issue meets the private business use test if more than 10 percent of the proceeds of the issue are to be used for any private business use. Section 141(b)(6) of the Code defines “private business use” as use (directly or indirectly) in a trade or business carried on by any person other than a governmental unit. For this purpose, any activity carried on by a person other than a natural person must be treated as a trade or business use.
Section 1.141–3(a) of the Income Tax Regulations provides, in part, that the 10 percent private business use test of § 141(b)(1) of the Code is met if more than 10 percent of the proceeds of an issue is used in a trade or business of a nongovernmental person. For this purpose, the use of financed property is treated as the direct use of proceeds. Section 1.141–1(b) defines a nongovernmental person as a person other than a governmental person.
Pursuant to § 1.141–1(b), a governmental person means a State, territory, a possession of the United States, the District of Columbia, or any political subdivision thereof, or any instrumentality of the foregoing. The United States and any agencies and instrumentalities thereof are not governmental persons.
Section 1.141–3(b)(1) provides that both actual and beneficial use by a nongovernmental person may be treated as private business use. In most cases, the private business use test is met only if a nongovernmental person has special legal entitlements to use the financed property under an arrangement with the issuer. In general, a nongovernmental person is treated as a private business user as a result of ownership; actual or beneficial use of property pursuant to a lease, a management contract, or an incentive payment contract; or certain other arrangements such as a take or pay or other output-type contract. Section 1.141–3(b)(7) provides that any other arrangement that conveys special legal entitlements for beneficial use of bond proceeds or of financed property that are comparable to the special legal entitlements described above results in private business use.
Section 1.141–3(b)(4)(i) provides generally that a management contract with respect to financed property may result in private business use of that property, based on all of the facts and circumstances. A management contract with respect to financed property generally results in private business use of that property if the contract provides for compensation for services rendered with compensation based, in whole or in part, on a share of net profits from the operations of the facility.
Section 1.141–3(b)(4)(ii) defines “management contract” as a management, service, or incentive payment contract between a governmental person and a service provider under which the service provider provides services involving all, a portion, or any function, of a facility. For example, a contract for the provision of management services for an entire hospital, a contract for management services for a specific department of a hospital, and an incentive payment contract for physician services to patients of a hospital are each treated as a management contract.
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Section 1.141–3(b)(4)(iii) provides that certain arrangements described therein generally are not treated as management contracts that give rise to private business use. The described arrangements include (A) contracts for services that are solely incidental to the primary governmental function or functions of a financed facility (for example, contracts for janitorial, office equipment repair, hospital billing, or similar services); and (B) the mere granting of admitting privileges by a hospital to a doctor, even if those privileges are conditioned on the provision of de minimis services if those privileges are available to all qualified physicians in the area, consistent with the size and nature of the hospital’s facilities.
Section 141(e) of the Code provides, in part, that the term “qualified bond” includes a qualified 501(c)(3) bond if certain requirements stated therein are met.
Section 145(a) of the Code provides generally that the term “qualified 501(c)(3) bond” means any private activity bond issued as part of an issue if (1) all property that is to be provided by the net proceeds of the issue is to be owned by a 501(c)(3) organization or a governmental unit, and (2) such bond would not be a private activity bond if (A) 501(c)(3) organizations were treated as governmental units with respect to their activities that do not constitute unrelated trades or businesses, determined by applying § 513(a) of the Code, and (B) §§ 141(b)(1) and (2) of the Code were applied by substituting “5 percent” for “10 percent” each place it appears and by substituting “net proceeds” for “proceeds” each place it appears. Section 150(a)(4) of the Code defines the term “501(c)(3) organization” to mean any organization described in § 501(c)(3) and exempt from tax under § 501(a) of the Code.
Section 1.145–2 provides that, with certain exceptions and modifications, §§ 1.141–0 through 1.141–15 apply to § 145(a) of the Code. Section 1.145–2(b) provides that, in applying §§ 1.141–0 through 1.141–15 to § 145(a), (1) references to governmental persons include 501(c)(3) organizations with respect to their activities that do not constitute unrelated trades or businesses under § 513(a) of the Code; (2) references to “10 percent” and “proceeds” in the context of the private business use test and the private se
curity or payment test mean “5 percent” and “net proceeds”, respectively; and (3) references to the private business use test in §§ 1.141–2 and 1.141–12 include the ownership test of § 145(a)(1) of the Code.
Rev. Proc. 97–13 sets forth conditions under which a management contract between a qualified user and a service provider does not result in private business use under § 141(b) of the Code. Rev. Proc. 97–13 also applies to determinations of the effect of such a management contract on whether a bond meets the test in § 145(a)(2)(B) of the Code. Section 3.07 of Rev. Proc. 97–13 defines “qualified user” as any State or local governmental unit as defined in § 1.103–1 or any instrumentality thereof. The term also includes a 501(c)(3) organization if the financed property is not used in an unrelated trade or business under § 513(a) of the Code. The term does not include the United States or any agency or instrumentality thereof.
Section 5.01 of Rev. Proc. 97–13 provides that if the requirements of section 5 of Rev. Proc. 97–13 are satisfied a management contract does not itself result in private business use. In addition, the use of financed property, pursuant to a management contract meeting these requirements, is not private business use if that use is functionally related and subordinate to that management contract and that use is not, in substance, a separate contractual agreement (for example, a separate lease of a portion of the financed property).
Under section 5.02(1) of Rev. Proc. 97–13, the management contract must provide for reasonable compensation for services rendered with no compensation based, in whole or in part, on a share of net profits from the operation of the facility.
Section 5.02(2) of Rev. Proc. 97–13 provides, for purposes of § 1.141– 3(b)(4)(i) and Rev. Proc. 97–13, that compensation based on (a) a percentage of gross revenues (or adjusted gross revenues) of a facility or a percentage of expenses from a facility, but not both; (b) a capitation fee; or (c) a per-unit fee is generally not considered to be based on a share of net profits.
Section 5.02(3) of Rev. Proc. 97–13 provides, for purposes of § 1.141– 3(b)(4)(i) and Rev. Proc. 97–13, that a productivity reward equal to a stated dol
lar amount based on increases or decreases in gross revenues (or adjusted gross revenues), or reductions in total expenses (but not both increases in gross revenues (or adjusted gross revenues) and reductions in total expenses) in any annual period during the term of the contract, generally does not cause the compensation to be based on a share of net profits.
Section 5.03 of Rev. Proc. 97–13 provides that the management contract must be described in section 5.03(1), (2), (3), (4), (5), or (6). Section 5.03(4) describes periodic fixed fee and capitation fee arrangements in certain 5-year contracts. Section 5.03(5) describes per-unit fee arrangements in certain 3-year contracts. Section 5.03(6) describes percentage of revenue or expense fee arrangements in certain 2-year contracts.
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