Where your property taxes actually go
The answer
A property tax bill is not one decision made by "the city." It is the sum of separate levies set independently by every overlapping taxing jurisdiction over your parcel: typically a city or township, the county, a school district, and often a community college district, park district, library district, water district, or other special district. Each governing board sets its own rate on its own budget cycle. The county assessor's office determines the assessed value of the property, a valuation exercise, not a taxing decision. A separate office, usually the county treasurer, bills and distributes the money to each jurisdiction according to its share. The fact that breaks the folk model: in most of the country, the school district is the single largest line on the bill, not the city. In Philadelphia, the school district's dedicated share of the property tax was set at 55 percent of the levy by City Council for fiscal year 2024, and raised to 56 percent for fiscal year 2025, worth about $18 million, with a further increase to 56.5 percent scheduled for fiscal year 2030.1
How it actually works
The sequence runs in three steps. First, the county assessor values the property, on a cycle set by state law. Second, each independent taxing jurisdiction, city, county, school board, special districts, adopts its own budget and sets its own rate against that assessed value. Third, the county treasurer sums the levies into one bill and distributes proceeds to each jurisdiction. State law can override this at any step. California's Proposition 13, approved by voters June 6, 1978, caps the general tax rate at 1 percent of assessed value and limits annual assessment increases to 2 percent unless the property sells or is rebuilt, meaning two identical adjacent houses can carry very different tax bills for decades.2 Utah takes the opposite approach: its 1985 Truth-in-Taxation law requires any taxing entity that wants more revenue than the prior year, beyond new construction, to publicly advertise the increase and hold a hearing before adopting it, an annual, mechanical check on every taxing board, not just the city council.3 Philadelphia's FY2024-FY2025 budget cycle, Mayor Cherelle Parker's first budget, passed by City Council in 2024, is a concrete example of the rate-setting side: council and the mayor, not the assessor, decided to shift the school district's share of the existing levy upward.1
Who holds the power
The county assessor's office determines assessed value, elected in some states, appointed in others. Each taxing jurisdiction's elected board, city council, county commission, school board, special district board, sets its own rate annually. The state legislature sets caps, limits, and relief programs, Proposition 13-style limits, homestead exemptions, Truth-in-Taxation-style hearing mandates, that bind every local board at once. The county treasurer bills and distributes the proceeds but does not set rates.
Where you come in
- Contest the assessed value, not the rate, through the county board of equalization or assessment appeals board, typically within a fixed window, as short as 45 days from the notice date in some states.
- In states with a Truth-in-Taxation-style mechanism, attend the specific taxing jurisdiction's public hearing before it can raise revenue beyond new growth.
- Many school and special-district levies or bonds go directly to voters as ballot measures.
Related
- How your city budget works
- Glossary: assessed value
- Glossary: mill rate
- Glossary: bond measure
- Glossary: tif