About
About Property Tax Calculator
Property Tax Calculator (proptaxbystate.com) turns each state’s written assessment rules into a worksheet you can check line by line against your own notice.
Updated Editorial policy
Who publishes this site
The site is written and maintained by the Property Tax Calculator Editorial Team. It is operated by an independent publisher that also runs a small number of other single-topic, state-by-state calculators. No page here is written by a named individual, and no credential, review or rating is claimed. The site is not affiliated with any assessor, county treasurer, state revenue department, lender or title company, and nothing on it is an official determination of value, eligibility or tax due.
What the calculators do
Every state page and the District of Columbia page runs one shared engine against a jurisdiction-specific rule file. The rule file records only what applies everywhere in that jurisdiction: the value the assessor estimates, the residential assessment ratio or class rates, any statewide limit on how fast an assessment may rise (California’s approved factored base, Florida’s Save Our Homes limit, Michigan’s taxable-value cap, Oregon’s comparison of prior assessed value and maximum assessed value, Texas’s 10% homestead appraisal limit and similar rules), statewide homestead, senior and veteran exemptions, fixed statewide rate components, statewide bill limits such as Indiana’s circuit-breaker caps and Oregon’s Measure 5 limits, and statewide credits. Each rule links to the statute or agency page it came from.
What a state rule file never contains is your local tax rate. Rates are set by counties, cities, school districts and special districts, and they differ from one parcel to the next even inside one county. The calculator therefore asks for the rate printed on your bill or your county’s rate sheet and refuses to invent one. A statewide Census ratio of median taxes to median home value appears on each page, clearly labeled as historical context rather than a rate.
Transfer tax pages
A separate set of pages covers the one-time real-estate transfer tax charged when a deed is recorded in nine states. Those pages model the statutory rate, rounding and exclusions for an ordinary sale and say which local add-ons are left out.
How the site is funded and measured
The site currently carries no advertising and sells nothing. Hosting is paid by the publisher. A first-party counter records page views and whether a calculation was completed, never the figures you type. Each field the server keeps is itemized on the privacy page.
Accountability
How figures are sourced, how often they are re-checked and how mistakes are corrected is set out in the editorial policy. The formulas are documented in the methodology. If you find a wrong figure or an outdated rule, the corrections form goes straight to the editorial queue.
Updated by the Property Tax Calculator Editorial Team. Report a correction