Property Tax

Updated: Jan 30, 2026

This hub helps you answer a common U.S. question: How much will my property taxes be? Start with the Property Tax calculator to estimate annual taxes from assessed value and local tax rates. Then use the guides below to understand what actually drives your bill: assessment methods, millage rates, exemptions, escrow, and how appeals work.

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Tip: The most common surprise is reassessment after purchase or renovation. Model a “current bill” and a “post-sale reassessment” scenario.

How to use the Property Tax hub

A property tax bill is usually based on assessed value × tax rate, plus local rules, exemptions, and fees. “Tax rate” may be expressed as a percentage or as a millage rate. Because assessment systems differ by state/county, two similar homes can have very different bills.

Start with the calculator, then use the guides to understand assessed value vs market value, common exemptions (like homestead), escrow payments, and how to appeal an assessment if the value seems inflated.

Start here

How to calculate property tax Assessed value, tax rate, exemptions, and a simple step-by-step example. Assessed value vs market value Why your tax value can differ from sale price — and when reassessment hits. Homestead exemption (and other exemptions) How exemptions reduce taxable value and who qualifies. How to appeal your property tax assessment Evidence to gather, timelines, and what typically works.

All Property Tax guides

How property tax works Assessment, rates, billing, and why rules vary by state and county. How to calculate property tax Formula, example, and how exemptions and caps affect the final bill. Assessed value vs market value Where assessments come from and why they don’t match comps 1:1. Millage rate explained What “mills” mean and how to convert millage into dollars. Property tax rate by state How state-level patterns work — and why the county matters more than the state average. Homestead exemption Eligibility, savings examples, and common paperwork mistakes. Property tax escrow & mortgage payments Why your monthly payment changes and what escrow shortages mean. Appeal your assessment Comps, errors, hearings, and how to argue value effectively. Is property tax deductible? Basics of deductions, itemizing, and common misconceptions. Due dates, late fees, and penalties What happens if you miss payments and how delinquency timelines typically work. New construction & reassessment Why taxes can jump after purchase, remodels, or adding square footage. Common property tax mistakes Underestimating reassessment, missing exemptions, and ignoring escrow changes.

Related calculators

Mortgage Calculator See how taxes + insurance affect total monthly payment. Total Cost of Ownership Model taxes, insurance, maintenance, and HOA over time. Rent vs Buy Property tax is a major driver of the “buy” side—compare scenarios. Renovation ROI Renovations can trigger reassessment—estimate ROI and tax impact.

Property Tax FAQ

How do I calculate property tax?

In most areas, property tax is based on: assessed value × tax rate, then reduced by exemptions (if any). Your local jurisdiction may express the rate as a percentage or as a millage rate.

What’s the difference between assessed value and market value?

Market value is what buyers may pay. Assessed value is a taxable value set by the assessor using local rules and cycles. They often differ, and reassessment can occur after purchase, new construction, or major improvements.

What is a millage rate?

Millage is “tax per $1,000 of value.” For example, 20 mills means $20 per $1,000 of taxable value (before exemptions). Convert mills to an effective rate by dividing by 1,000.

Can I lower my property taxes?

Sometimes. The biggest levers are claiming exemptions you qualify for (like homestead) and appealing an assessment if it’s higher than reasonable comps or if property details are incorrect.

Why did my mortgage payment go up because of property tax?

If you escrow taxes, your lender estimates the next bill and adjusts your monthly payment. If taxes rise or the estimate was low, you can get an escrow shortage that increases payments until it’s covered.

Ready to estimate your bill?

Run a base scenario + a reassessment scenario — property tax surprises usually come from value resets.

Open calculator → Learn the formula