What Powers Do National and State Governments Share?

Meta description: Learn which powers the U.S. national and state governments share, how concurrent powers work, and what limits apply when federal and state laws overlap.

The U.S. Constitution divides authority between the federal government and the states, but the two levels do not operate in completely separate spheres. They share several important responsibilities, often called concurrent powers. Both can tax, establish courts, borrow money, make and enforce laws, and spend funds for public purposes. Understanding these shared powers also means knowing where constitutional limits apply—and what happens when federal and state rules conflict.

What Are Concurrent Powers?

Concurrent powers are authorities that may be exercised by both the national government and state governments. The Constitution does not provide one master list labeled “concurrent powers.” Instead, the concept comes from provisions that grant federal authority while leaving states with their own governing powers, subject to constitutional restrictions.

This system is part of federalism, the division of governmental authority between the national government and the states. Federal powers include those expressly granted in the Constitution, such as regulating interstate commerce and coining money. State powers are grounded largely in the states’ general authority to protect public health, safety, and welfare. Powers not delegated to the United States or prohibited to the states are reserved to the states or the people under the Tenth Amendment.

Some responsibilities are plainly shared, such as taxation and courts. Others involve overlapping regulation: federal and state laws may both address areas such as transportation, environmental protection, or workplace safety. In those cases, the legal question is not simply whether both governments can act, but whether a particular law is authorized and consistent with the Constitution.

Major Powers Shared By Federal And State Governments

Taxing And Collecting Revenue

Both the federal government and state governments can impose taxes to fund public services. The federal government collects taxes such as individual income, corporate income, payroll, and excise taxes. States may impose income, sales, property, fuel, and other taxes, although the mix varies by state. Local governments, which are generally created under state law, may also collect certain taxes.

Shared taxing authority does not mean either level can tax in any way it chooses. The Constitution places limits on taxation, and courts have interpreted those limits over time. For example, states generally cannot use taxes to discriminate against or improperly burden interstate commerce. Federal taxation must also comply with constitutional requirements. A person or business may therefore owe taxes to more than one level of government on related economic activity, depending on the applicable laws.

Borrowing Money

The national government and states can borrow money. Congress has constitutional authority to borrow on the credit of the United States. States commonly borrow by issuing bonds to finance public projects, such as roads, schools, water systems, and other infrastructure. State constitutions and laws may impose limits or procedures for state borrowing, including requirements for voter approval or balanced budgets.

Borrowing creates an obligation to repay debt, usually with interest. Federal and state borrowing are separate legal and financial activities: a state’s debt is not automatically a federal obligation, and federal debt is not automatically a state obligation.

Establishing Courts And Administering Justice

The federal government and states both maintain court systems. Congress establishes federal courts below the Supreme Court, while each state creates and operates its own court system under state law. Federal courts hear cases within the jurisdiction defined by the Constitution and federal statutes. State courts handle most disputes involving state law and also hear many cases involving federal law when federal jurisdiction is not exclusive.

As a result, the same event can sometimes lead to separate state and federal legal proceedings if it involves different laws and jurisdictional rules. For instance, conduct may violate both a state criminal statute and a federal statute. Whether both governments may prosecute depends on the facts, the laws involved, and constitutional principles, including the “dual sovereignty” doctrine applied by courts.

Making And Enforcing Laws

Both governments enact laws and operate agencies to administer them. Congress passes federal statutes within its constitutional authority; state legislatures pass laws on matters within state authority. Federal agencies and state agencies may issue regulations under authority delegated by their respective legislatures, provided they stay within the limits of their governing laws.

Federal and state law can overlap in practical areas such as consumer protection, public health, criminal justice, education, and transportation. A state may impose its own requirements alongside federal ones when the Constitution and federal law permit it. In some fields, federal law sets a minimum standard and states may adopt stricter rules; in others, Congress may displace state regulation. The result depends on the specific statute, regulations, and constitutional authority.

Spending For Public Purposes

Both the federal government and states spend public money on services and programs. States fund areas such as public schools, roads, public safety, health programs, and state agencies. The federal government funds national functions and programs, including defense, Social Security, federal transportation programs, and grants to states and other recipients.

Federal grants are one way the governments work together. Congress may offer funds to states for programs such as highways, health care, or education, often with conditions. Those conditions must satisfy constitutional and statutory rules. States can choose whether to accept many grants, but accepting funds may require compliance with program requirements. The details matter: a grant condition cannot simply override other constitutional limits.

Regulating Economic Activity

The federal government regulates interstate and foreign commerce under the Commerce Clause. States also regulate economic activity within their borders through business licensing, contract rules, consumer-protection laws, and other measures. Because modern commerce often crosses state lines, federal and state regulation can intersect.

For example, a business operating in several states may need to comply with federal standards and with different state rules. Federal law may establish a nationwide framework, while state law addresses local concerns. However, states generally cannot impose measures that improperly discriminate against or unduly burden interstate commerce. The Supreme Court’s interpretation of the Commerce Clause and related principles helps define these boundaries.

Protecting Public Health And Safety

States traditionally exercise broad authority to protect public health, safety, and welfare, sometimes called their “police powers.” This authority supports state and local rules involving building codes, public health, traffic safety, professional licensing, and emergency response. The federal government also acts in these areas when it has constitutional authority, such as through regulation of interstate commerce, federal spending, or other powers granted by the Constitution.

During public health emergencies, for instance, state and federal officials may have distinct responsibilities and legal authorities. States generally direct many local public health measures, while federal agencies may address matters such as interstate movement, federal facilities, or national coordination. The scope of authority depends on the relevant laws and circumstances; neither level has unlimited power.

How The Constitution Divides And Limits Shared Powers

Enumerated, Reserved, And Concurrent Powers

The Constitution grants the federal government specific powers, many of which are listed in Article I, Section 8. These include the power to tax and spend for the general welfare, regulate commerce among the states and with foreign nations, establish a post office, and raise and support armed forces. The Necessary and Proper Clause allows Congress to pass laws needed to carry out its enumerated powers and other constitutional responsibilities.

The Tenth Amendment reserves powers not delegated to the United States, and not prohibited to the states, to the states or the people. This reservation supports state authority over many local matters, but it does not mean states can disregard federal constitutional rules. The Constitution also expressly prohibits certain state actions, such as making treaties or coining money, and restricts how states may interact with one another.

Concurrent powers are therefore best understood as overlapping authority within constitutional boundaries—not as permission for two governments to do anything they choose in the same area. A government must have a valid legal basis for its action, and that action must respect constitutional protections.

The Supremacy Clause And Conflicts Between Laws

Article VI of the Constitution contains the Supremacy Clause, which makes the Constitution, valid federal laws, and treaties the supreme law of the land. When a valid federal law conflicts with state law, federal law generally prevails. This principle is known as federal preemption.

Preemption can be express, when Congress states that federal law displaces certain state rules, or implied, when the structure and purpose of federal law show that state regulation is displaced. Courts examine the text and context of the law. Not every federal regulation automatically wipes out state authority; Congress may allow states to maintain or adopt their own rules, and some federal laws establish a baseline rather than a complete national standard.

The Supremacy Clause does not give the federal government unlimited power. A federal law must still rest on constitutional authority. States and individuals may challenge laws in court, and courts determine whether the Constitution permits the federal action and whether a genuine conflict exists.

Constitutional Rights Apply To Both Levels

Both federal and state governments are bound by the Constitution. The Bill of Rights originally restricted the federal government, but many of its protections apply to states through the Fourteenth Amendment’s Due Process Clause, as interpreted by the Supreme Court. These protections include, among others, freedom of speech, religious freedom, and safeguards in criminal proceedings.

The Fourteenth Amendment also prevents states from denying people equal protection of the laws or depriving them of life, liberty, or property without due process. Federal actions are subject to applicable constitutional protections as well, including rights recognized under the Bill of Rights. Shared authority cannot be used to bypass individual rights.

Examples Of Shared Powers In Everyday Life

These examples show why the boundaries can be complex. A highway project may receive federal funding but be planned and managed by a state. A state may enforce environmental standards under a federally approved program. A criminal act may violate both state and federal law. The allocation of authority depends on the statute, the constitutional basis, and the relationship between the federal and state rules.

Shared Powers Versus Cooperative Federalism

Concurrent powers describe authority that both levels of government may exercise. Cooperative federalism describes how those governments often work together to carry out programs. It can involve federal funding, state administration, shared standards, or coordination among agencies.

Medicaid illustrates this cooperative approach. It is jointly financed by the federal government and states, and states administer their programs under federal requirements. State participation and program details operate within federal law, while states make certain choices within the flexibility the law allows. This arrangement is different from saying that every part of the program is an unrestricted concurrent power.

Cooperation can make national programs responsive to local needs, but it can also create complicated rules about funding, accountability, and legal responsibility. When a dispute arises, courts may need to determine which government has authority, whether a funding condition is valid, or whether one level has exceeded the scope of a statute.

How To Tell Which Government Has Authority

For a specific policy or legal question, several steps can help clarify the division of power:

1. Identify the law involved. Determine whether the rule is federal, state, or local, and find the statute or regulation that created it.
2. Check the constitutional basis. Federal action must fit within a power granted to the national government; state action must comply with the Constitution and any valid federal law.
3. Look for preemption language. A federal statute may expressly displace state rules, or its structure may raise a question of implied preemption.
4. Consider state variation. States may have different laws in areas where federal law leaves room for local choices.
5. Consult authoritative guidance. Government agencies, statutes, and court decisions provide more reliable answers than general summaries, especially for legal or tax decisions.

For foundational explanations, readers can consult the Constitution Annotated from Congress.gov, which discusses constitutional provisions and court interpretations, and the National Archives’ Constitution transcript, which provides the text of the Constitution. These sources help distinguish powers explicitly granted to the federal government, powers reserved to the states, and situations in which the two levels share responsibilities.