Use official local inputs
The Property Tax Estimator is deliberately a worksheet, not a local property database. It calculates:
annual property tax = assessed value × assessment ratio × entered local tax rate
It also shows a monthly set-aside. It does not apply exemptions, special assessments, reassessment rules, appeal outcomes, escrow timing, or tax deductions.
Complete the three inputs
- Enter the assessed value from the current assessment notice or tax bill. Do not substitute a listing price unless the local authority actually uses that value.
- Enter the assessment ratio as a percentage. If the assessed value is already the full taxable value, enter
100. - Enter the combined local tax rate as a percentage. Obtain the current rate from the relevant official authority or tax bill; make sure it includes the jurisdictions that apply to the property.
For example, an assessed value of $450,000, a 100% assessment ratio, and a 1.1% entered rate produces a $4,950 annual planning figure, or $412.50 per month. That arithmetic does not confirm that the authority will bill that amount.
Verify exclusions separately
- Check current exemptions, special districts, assessments, payment schedules, and reassessment dates with the relevant local authority.
- If comparing homes, use the tax information specific to each parcel and tax year rather than a regional average.
- A mortgage servicer may collect a different monthly escrow amount because of cushions, timing, or an escrow analysis.
- Federal and state tax treatment is personal and changes over time. This tool does not calculate deductions or tax savings; discuss those questions with a qualified tax adviser.
Related tools: Mortgage Calculator, Cash-to-Close Worksheet, and Rental Analyzer.