Property tax rates in the United States are set by local governing bodies, not by Congress and not directly by state legislatures. The people who decide how much you owe are your city council or county commission, your school district board, and any special-purpose districts (fire, library, water, and the like) whose boundaries your property sits inside. Each of these bodies runs its own budget, adopts its own rate, and layers that rate onto your bill independently. States define the legal rules those local bodies have to follow, and the federal government does not set property tax rates at all.
City Councils and County Commissions
City councils, town boards, and county commissions are the most visible rate-setters. They build an annual budget for general services like law enforcement, fire protection, road maintenance, and parks, then subtract everything they expect to bring in from other sources: state aid, sales tax receipts, fees, and fines. What’s left has to come from property owners. That leftover figure is the tax levy.
Turning the levy into a rate is arithmetic. The body divides the levy by the total taxable assessed value of all property in its jurisdiction and expresses the result per $1,000 of assessed value. That per-thousand figure is the millage rate. A jurisdiction that needs $5 million from a property base assessed at $500 million lands on 10 mills, or $10 per $1,000 of assessed value. The council or commission then adopts the rate through a formal vote, and that vote binds every property owner inside the jurisdiction’s borders.
Because these officials stand for election, the political feedback loop is the real check on rates in places without a state-imposed cap. Push rates up too aggressively and voters push back at the next election. Hold them too low and services degrade until residents complain about that instead.
School District Boards
School districts are usually independent taxing authorities with their own budgets, staff, and elected boards. They calculate what they need for teacher salaries, buildings, transportation, and classroom resources, then set a millage rate to cover the gap between total costs and what comes in through state education aid and federal funds.
This is often the biggest line item on a homeowner’s bill. Nationally, about 83% of local revenue for public schools comes from property taxes, and property taxes account for roughly 36% of total public school revenue once state and federal money is included.1National Center for Education Statistics. COE – Public School Revenue Sources In many communities the school district’s share exceeds half the total property tax owed.
State funding formulas shape how hard a district has to lean on local property owners. Two districts running similar budgets can adopt very different rates because one receives more state education aid than the other, leaving less for local homeowners to cover.
Special Purpose Districts
Beyond the city, county, and school district, you may be paying taxes to bodies you’ve barely heard of. Special purpose districts provide narrowly focused services within defined geographic boundaries: fire protection, water and sewer, libraries, parks, mosquito control, flood management. The United States has more than 39,500 of these districts, which makes them one of the most common forms of local government. Each one authorized to levy taxes sets its own millage rate dedicated solely to its operations.
These districts usually come into existence through a voter-approved referendum or a specific state statute. Many operate under a voter-approved maximum millage rate, meaning the district can levy up to the cap but has to return to voters to exceed it. The district’s governing board then picks the actual rate each year within that ceiling. Because every district layers onto your bill independently, homeowners in areas with multiple overlapping districts can face a noticeably higher cumulative rate than neighbors across a district line who receive fewer specialized services.
Unlike a city or county, a special district cannot spread its money around. A library district cannot redirect funds to road repair; a fire district cannot pay for parks. The rate it sets is tied to the one job it exists to do.
How States Shape the Rates Locals Can Set
State governments rarely set property tax rates directly, but they define the legal playing field through constitutional provisions, statutes, and administrative regulations. Those rules govern how local authorities assess property, how far they can raise rates, and what procedures they must follow.
Rate Caps, Levy Caps, and Assessment Caps
Most states impose some form of cap. Rate caps limit the maximum millage a jurisdiction can levy. Levy caps restrict how much total revenue can grow year over year. Assessment caps limit how quickly a property’s taxable value can rise. Some states combine them. When a local body bumps against its cap, it has to find other revenue, cut spending, or ask voters for permission to exceed the limit.
States also oversee equalization so that assessment practices stay consistent across counties. Without that oversight, one county could quietly undervalue its properties and shift a disproportionate share of state-levied costs onto its neighbors. State boards of equalization (or equivalents) review local practices to keep that from happening.
Circuit Breaker Programs
Twenty-nine states and the District of Columbia operate what are known as circuit breaker programs, which cut property taxes for households whose bill exceeds a set percentage of their income.2Institute on Taxation and Economic Policy. Property Tax Circuit Breakers Can Help States Create More Equitable Tax Codes The name is deliberate: like an electrical breaker, the program trips when the burden runs disproportionate to a household’s ability to pay. Eligibility rules, income thresholds, and benefit caps vary widely. Some states limit relief to seniors; others include renters.
Public Hearings and Voter Referendums
Before any local taxing authority finalizes its millage rate, it has to hold public hearings where the proposed rate and budget are presented to the community. These hearings are legally required. Laws typically mandate advance notice through newspaper advertisements, government websites, or direct mail, generally at least 10 to 15 days before the hearing.
During the hearing, the board explains why the proposed rate is necessary and how the money will be spent. Residents can question the budget, challenge specific line items, or argue for cuts. Public pressure has its most direct effect at this stage. Once the comment period closes, the board holds its formal vote to adopt the rate for the year.
In some jurisdictions, voters have even more direct control. Proposed rate increases beyond a certain threshold require approval through a ballot referendum rather than a simple board vote. Where that mechanism exists, it gives taxpayers an outright veto on hikes that exceed the ceiling.
What You Can Actually Challenge
You cannot directly challenge the tax rate your local government adopts. That rate applies to everyone in the jurisdiction equally. What you can challenge is the assessed value your local assessor puts on your specific property, and because your bill is rate times assessed value, cutting the assessment cuts the bill.
The appeal process follows a general pattern, though deadlines vary. After receiving your assessment notice, you generally have somewhere between 30 and 90 days to file a formal appeal. That usually starts with an informal review at the assessor’s office. If the informal review doesn’t resolve it, you can escalate to a local review board (often called a board of equalization or board of tax appeals) for a hearing and decision. Most states then allow a further appeal to a state-level board or the courts.
Strong appeals rest on concrete evidence: recent sales of comparable properties that sold for less than your assessed value, an independent appraisal, documentation of defects the assessor may not have known about, or proof of a factual error like incorrect square footage or lot size. Believing your taxes are too high is not a valid basis. You have to show the assessed value itself is wrong.
Where the Federal Government Fits In
The federal government does not set property tax rates, but federal tax rules affect what property taxes cost you after filing. If you itemize on your federal return, property taxes paid during the year are deductible, subject to a combined state and local tax (SALT) cap of $40,000 for married couples filing jointly or $20,000 for married filing separately. Property taxes on rental or investment properties are handled separately as a business expense on Schedule E and are not subject to the SALT cap. In high-tax jurisdictions, the SALT cap can leave part of your property tax bill non-deductible, which raises the effective cost of ownership even though the rate itself was set locally.