In this declaratory judgment action pending in the Superior Court of Fulton County, the City of Atlanta and the City of College Park each claim the right to tax businesses that operate in the parts of the Hartsfield-Jackson Atlanta International Airport that lie within the city limits of College Park. After a hearing on the parties’ cross-motions for partial summary judgment, the trial court determined that only College Park is authorized to levy, assess, and collect an occupation tax on businesses operating at the airport within its city limits. The trial court also determined that only College Park is authorized to impose and collect taxes on the sale, storage, and distribution of alcoholic beverages at the airport within its city limits. Accordingly, the trial court granted a declaratory judgment in favor of College Park on these issues. The trial court determined, however, that Atlanta is a local authority that is statutorily exempt from liability for any occupation tax for its proprietary business operations within College Park’s city limits. Accordingly, the trial court granted a declaratory judgment in favor of Atlanta on this issue. In Case No. A10A2054, Atlanta appeals the trial court’s rulings regarding College Park’s authority to collect alcoholic beverage and occupation taxes on activities at the airport, and, in Case No. A10A2055, College Park cross-appeals the trial court’s determination that Atlanta is exempt from any occupation tax for its proprietary activities. In Case No. A10A2054, for the reasons explained below, we affirm in part see Division 1, infra and vacate in part see Division 3, infra. In Case No. A10A2055, we reverse in part see Division 2, infra.1 The following facts are undisputed. In 1969, College Park conveyed land to Atlanta, in connection with Atlanta’s expansion of the airport, which it owns and operates. The cities agreed, in Section 18 of that contract, as follows: With respect to any and all buildings and structures located or constructed on property of the Atlanta Airport, exclusive jurisdiction over the issuance of permits, the collection of license and occupation taxes and fees, the inspection of properties, the enforcement of building codes and fire codes, and all similar matters shall vest in the City of Atlanta. Personal property, inventory and leasehold interest in property lying within the corporate limits of the City of College Park and belonging to parties other than the City of Atlanta, however, shall be subject to reasonable ad valorem tax by the City of College Park, to the extent permitted by law. Thereafter, Atlanta collected an occupation tax, which is a local tax on professional and business activities,2 from the rental car companies and other businesses that operated on airport property located in College Park.
In 2007, College Park reviewed the issue of its authority to collect occupation and alcoholic beverage taxes and concluded that it is the sole proper authority to levy and collect these taxes within its city limits. College Park notified Atlanta that it intended to begin assessing and collecting an occupation tax from businesses operating at the airport in College Park, including from the City of Atlanta itself for revenues generated from its proprietary operations at the airport. After College Park notified a few of the affected businesses about the tax, Atlanta filed suit against College Park and its city manager in his official capacity, seeking a declaratory judgment, an injunction, and other relief.