Who maintains this project
Property Tax Almanac is an independently maintained research and software project. The project publishes under the Property Tax Almanac name. It is not a government agency, assessor’s office, law firm or tax preparation service.
The project’s purpose is to help homeowners understand the information behind a tax bill and find the right local authority. County guides, comparison tools and worked examples serve different purposes; each should be read with its stated coverage and limitations.
Questions about the project and its content can be sent to admin@propertytaxalmanac.com. Publication under the project name does not imply review by a licensed tax professional or a local government office.
Data sources and methodology
County records combine stored tax benchmarks, population and home-value figures, and links to local authorities. Documentation and source years vary by record. A link to an assessor’s website does not by itself establish the source of every figure on a page.
Reviewed guides link to the official publications used for their local explanations and worked examples. These can include adopted rate schedules, assessor instructions, state revenue guidance and tax forms. Use the cited jurisdiction and tax year when interpreting a number. Where a benchmark’s source year has not been established, it should not be treated as a current quote.
How we prepare a reviewed guide
- Define the task and location. Identify which bill, district or exemption the guide explains and where the explanation applies.
- Link the evidence. Identify the official source and applicable year for local rules and numerical examples. State gaps rather than filling them with an assumed rate.
- Explain the calculation. Show the taxable base, rate units and included charges. Label hypothetical inputs and charges the example leaves out.
- Check the tool. Compare calculator results with worked examples and check invalid inputs. A calculation check does not establish eligibility for an exemption.
- State the review’s limits. Keep source review dates separate from tax years and identify what still needs confirmation for a particular address.
AI-assisted research, drafting and coding are used in developing this project. Generated text is not an authoritative source. Official references and calculation checks are the basis for the reviewed guides; older content has not all received the same review.
What has been reviewed
We have 25 county guides with local-source reviews, including Hampshire, Massachusetts. These guides include official source links, worked examples and explicit calculation limits. A reviewed guide does not mean that every parcel rate or every number in our comparison tools has been verified.
The remaining county pages and comparison datasets have not all received the same review. Their stored dates are not certification of current tax rates. Hypothetical examples explain a method; they are not adopted local rates. A claim about a current rate needs a source year, jurisdiction and official publication.
Our coverage
The almanac covers 711 counties and county equivalents across 50 states. See the state directory for current coverage. Coverage varies by state and is not a statistically representative sample of US homeowners.
Community lists are selections, not complete municipal directories. Calculators generally model a representative district, often the county seat, rather than every address in a county.
Dates: A data record's update date describes an editorial change. It is not necessarily the tax year, payment year, or source publication date. Where a source year has not been established, do not assume the figures describe the current tax year.
Rankings: The state rate comparison uses a simple, unweighted average of effective rates for covered counties. Each county has equal weight regardless of population or number of homes. Its bill statistic is the median of the covered counties' median bills, not a statewide household median. Rankings can change when coverage changes even if tax rates do not.
Corrections and source questions
Source documentation is incomplete in some records. Use those pages as starting points for research, not verified tax bills. The review process above describes the standard for reviewed guides, not a certification of the entire dataset.
To report an error, email admin@propertytaxalmanac.com with the page URL, the statement or figure, the relevant tax year and an official source link if available. Reports without a source are also welcome; explain what needs checking.
Our correction standard is to check the applicable source, correct the explanation and any affected calculation together, and describe material changes on the affected page. If an estimate cannot be supported, it should be qualified or paused while its basis is checked. We do not promise a fixed response time.
Advertising and editorial independence
The site includes third-party advertising code and may display advertising. Advertising does not determine the figures, sources or ordering used in our comparisons. A request for a correction does not require a purchase or payment.
For an address-specific bill or eligibility decision, use the responsible local tax office. This project provides general information and illustrative tools, not individual tax or legal advice.