Government agencies do not receive tax exemptions in the sense of a special break carved out for them, because they were never taxpayers in the first place. Federal, state, and local agencies sit outside the taxable category entirely: their revenue is excluded from federal income tax, their property is off the local tax rolls, and their official purchases generally bypass sales tax. So the honest answer to whether government agencies get tax exemptions is yes, broadly, but the mechanism is structural rather than a favor granted by the tax code. Agencies still interact with the tax system in real ways, mostly as employers and as sources of taxable payments to other people.
Why Agencies Sit Outside the Tax Base
The underlying principle is the Intergovernmental Tax Immunity Doctrine, which prevents one level of government from using its taxing power to interfere with another’s operations. It draws from the Supremacy Clause, the Tenth Amendment, and the broader constitutional design of dual federalism.1Constitution Annotated. ArtI.S8.C1.1.5 Intergovernmental Tax Immunity Doctrine The Supreme Court set the rule in McCulloch v. Maryland (1819), holding that states have “no power, by taxation or otherwise, to retard, impede, burden, or in any manner control” federal operations.2Justia. McCulloch v. Maryland, 17 U.S. 316 (1819) The protection runs both ways: the federal government likewise avoids taxing core state operations. Without it, a federal agency operating in all 50 states could face thousands of overlapping tax obligations, and local governments could price federal facilities out of their jurisdictions.
Income Tax
The statutory basis for the income tax exemption is IRC Section 115, which excludes from gross income any revenue “derived from any public utility or the exercise of any essential governmental function” that accrues to a state, political subdivision, or the District of Columbia.3Office of the Law Revision Counsel. 26 U.S.C. 115 – Income of States, Municipalities, Etc. The IRS treats this section as the general basis for government entities’ exemption from federal income tax.4Internal Revenue Service. Government Entities and Their Federal Tax Obligations
Revenue from public fees, fines, licensing, and service charges stays within an agency’s budget with no income tax liability, and agencies do not file annual income tax returns. Federal agencies occupy an even simpler position: taxing them would mean the federal government taxing itself.
Property, Sales, and Excise Taxes
Land and buildings owned by federal, state, or local governments are exempt from ad valorem property taxes. A federal courthouse, a state university campus, and a city fire station all sit outside the property tax base. Every state’s tax code exempts government-owned property, though the specific language varies.
Sales tax exemption works through documentation at the point of purchase. Federal agencies present proof of their tax-exempt status using the General Services Administration’s standardized form, SF 1094.5General Services Administration. United States Tax Exemption Form For routine transactions, federal employees often use GSA SmartPay cards; centrally billed accounts, where the agency pays the bank directly, are exempt from state sales tax.6GSA SmartPay. Recognizing GSA SmartPay Cards/Accounts Individually billed travel cards, where the employee is later reimbursed, may not qualify in every state.
State and local governments are also exempt from most federal excise taxes, including taxes on gasoline, diesel, kerosene, and aviation fuel bought for official use. The exemption does not extend to taxes on coal, gas-guzzler vehicles, or vaccines.7Internal Revenue Service. Publication 510 (12/2025), Excise Taxes In practice the exemption usually runs through a refund on IRS Form 8849 rather than a waiver at the pump.8Internal Revenue Service. About Form 8849, Claim for Refund of Excise Taxes
Where the Exemption Ends
Immunity is not absolute. When a government entity moves out of its core public functions and into commercial activity, it can lose tax protection. In New York v. United States (1946), the Supreme Court upheld a federal excise tax on New York’s state-owned mineral water bottling operation, holding that when Congress taxes all vendors of a product alike, a state engaged in that business “must pay your share.”9Justia. New York v. United States, 326 U.S. 572 (1946) A state-run liquor store, a municipal golf course charging market rates, or a publicly owned utility selling power on the open market can face the same taxes as private competitors. The “essential governmental function” language in Section 115 does real work: if the activity looks more like a business than a public service, the exemption may not apply.
The Court further narrowed the doctrine in South Carolina v. Baker (1988), confirming that intergovernmental tax immunity protects governments from being singled out for discriminatory taxation, not from generally applicable taxes that happen to affect government operations.
Government Contractors
A private company working under a government contract does not inherit the agency’s tax-exempt status. A construction firm building a federal office building is generally considered the end user of the materials it buys and installs, and those purchases are taxable. The exemption belongs to the government entity, not to the contractor. A narrow exception exists where legal title to the goods passes to the federal government before the contractor uses them, but that fact pattern is limited.
What Agencies Still Owe as Employers
Payroll is where agencies most directly participate in the tax system. An agency owes no income tax on itself, but as an employer it has obligations that apply regardless of its own tax status.
Every employer paying wages must withhold federal income tax, and the statute specifically names “the Government of the United States, a State, or a political subdivision thereof” as covered employers.10Office of the Law Revision Counsel. 26 U.S.C. 3402 – Income Tax Collected at Source Government employees owe income tax on their earnings like anyone else, and the agency withholds and remits it.11Internal Revenue Service. Understanding Employment Taxes
Agencies also pay the employer share of FICA: 6.2% for Social Security and 1.45% for Medicare on each employee’s wages.12Office of the Law Revision Counsel. 26 U.S.C. 3111 – Rate of Tax The Social Security tax applies to wages up to $184,500 in 2026; the Medicare tax has no cap.13Social Security Administration. Contribution and Benefit Base
An exception applies to some state and local workers. About one-quarter of state and local employees participate in a public retirement system instead of Social Security, and their coverage depends on Section 218 agreements, voluntary and irrevocable contracts between a state and the Social Security Administration that extend Social Security and Medicare coverage to specified groups of public employees.14Social Security Administration. Section 218 Agreements Where no Section 218 agreement covers a position, the employee and the agency may owe no Social Security tax on those wages, though Medicare coverage became mandatory for state and local employees hired after March 31, 1986.
Reporting Payments to Individuals
Agencies also act as reporters. Even though the agency owes no income tax, the money it sends out is often taxable in the recipient’s hands. Federal, state, and local agencies file IRS Form 1099-G to report:
- Unemployment compensation paid to individuals who lost their jobs
- State or local income tax refunds, credits, or offsets that may be taxable to the recipient
- Taxable grants that count as income for the recipient
- Agricultural payments, including subsidies and related payments to farmers
The officer or employee who controls the payments is responsible for filing the form.15Internal Revenue Service. Instructions for Form 1099-G Agencies issue W-2s to their own employees on the same terms as any private employer. The tax system treats them as conduits: the money flows through without tax at the agency level, then gets taxed when it reaches the individual.
PILT: Compensation for Lost Property Tax Revenue
The property tax exemption creates a fiscal problem for rural counties with large amounts of federal land. A county where the Forest Service or Bureau of Land Management owns half the acreage has a shrunken property tax base but still needs to fund schools, roads, and emergency services. Congress addressed this through the Payments in Lieu of Taxes program, codified at Chapter 69 of Title 31, which covers land in the National Park System, National Forest System, Bureau of Land Management holdings, certain wildlife refuge lands, Army reserve installations, and other categories of federal property.16Office of the Law Revision Counsel. 31 U.S.C. 6901 – Definitions The Department of the Interior calculates each county’s payment using a formula based on the amount of federal land in the county, the county’s population, and any revenue-sharing payments the county already receives.17U.S. Department of the Interior. Payments in Lieu of Taxes
In fiscal year 2025, the Interior Department distributed roughly $644.8 million in PILT payments to more than 1,900 counties across 49 states, the District of Columbia, and several U.S. territories.18Congress.gov. The Payments in Lieu of Taxes (PILT) Program: An Overview The payments don’t replace what counties would collect if the land were privately owned, but they cushion the fiscal impact of federal land ownership on local budgets.