Home value estimate
Start with market value when you want a quick annual property tax estimate for a home price, refinance, purchase, or county comparison.
Property tax calculator
Property tax calculator by county
Estimate annual and monthly property taxes by state and county. Enter a home value or assessed value, use the local effective property tax rate, and verify the result with official county property records.
Calculator
Estimate annual property tax
Location
Value and rate
Use market value for a quick county property tax estimate. Switch to assessed value when checking a tax bill or assessment notice.
CoveragePublished counties with usable tax-rate metrics.
51States
3,024Counties
93MTax records
Uses
Effective rateImplied rateTax billValue medians
How it works
Estimate property taxes from the value you actually have
Use market value for a fast home-value estimate, or use assessed value when you are checking an assessment notice, tax bill, or county property record.
Assessed or taxable value
Switch to assessed value when you have a tax notice, assessment letter, or taxable value from the county assessor or appraisal district.
County tax rate
Use the effective rate for home-value estimates, or the implied assessed-value rate when working from assessed value. Replace either with the official rate when available.
What to verify
Use the estimate as a starting point
Actual property taxes can change with exemptions, school districts, special assessments, assessment caps, and county billing rules.
Official tax source
Confirm the latest tax bill, payment history, due dates, levy districts, and delinquency details with the county tax collector, treasurer, or appraisal district.
Assessment notice
Check whether the assessed value, exemptions, property classification, and cap treatment match what appears on your assessment notice or county account.
Property record context
Use AssessorSearch to match the address or APN, review owner and property details, and find the county source links behind the estimate.
Estimate workflow
A better property tax estimate has three checks
The calculator gives county-level tax context, but the official bill still depends on parcel-level value, exemptions, and tax districts.
Start with a directional estimate
Select a state and county, enter the value you know, and review the annual and monthly estimate before checking the official county source.
Use the right value
Market value is best for quick comparisons. Assessed or taxable value is better when you are checking a specific property tax bill.
Verify the property record
Match the address or APN, confirm exemptions and assessed value, then use official county source links before relying on the estimate.
Data partnerships
Partner around local tax estimates and official-source links
Real estate publishers, title companies, mortgage teams, tax appeal firms, and market-data sites can reference county-level property tax estimates with clear links back to official records.
FAQ
Property tax calculator questions
How do I estimate property taxes?
Choose the state and county, enter either the home's estimated market value or the assessed value from a tax notice, then multiply by the local rate shown in the calculator. The result is a property tax estimate, not the final county bill.
What is an effective property tax rate?
An effective property tax rate compares actual property tax bills with estimated property value. It is useful for comparing counties and estimating taxes from home value, but it is not the same as an official millage, levy, or tax district rate.
What is an implied assessed-value rate?
An implied assessed-value rate is calculated from the median tax bill divided by the median assessed value. It can be useful when you have assessed or taxable value, but it should not be treated as the county's official tax rate.
Can I estimate property taxes by county?
Yes. County-level estimates are useful because property tax rates, assessment rules, exemptions, school levies, and special districts vary by location. Use the county estimate as a starting point, then confirm the official bill with the local tax office.
Why can two homes in the same county have different tax bills?
Property tax bills can vary because of exemptions, assessment caps, school districts, city boundaries, special districts, bond levies, and whether the property is owner-occupied, commercial, rental, agricultural, or otherwise classified.
Where should I verify my actual property tax bill?
Verify the official bill with the county tax collector, treasurer, appraisal district, assessor, or property tax portal. AssessorSearch county pages link to official county property, tax, and assessor sources where available.