Property Tax Calculator
Estimate yearly property tax and a simple monthly escrow estimate. Built for fast scenario checks: change the rate, add an exemption, and compare.
Note: This is a simplified estimate. Local rules, caps, and special districts can change the result.
Quick way to use this property tax calculator
Run 2-3 scenarios: conservative, baseline, optimistic. A small change in the tax rate or assessed value can swing your annual cost by hundreds (or thousands) of dollars.
This calculator estimates annual property tax from a few inputs: your home value, your local tax rate, and (optionally) an assessment ratio and exemption. It’s designed for “back of the envelope” planning, especially when you’re comparing homes, building a monthly budget, or sanity‑checking a lender’s estimated escrow.
What property taxes are (in plain English)
Property tax is a recurring local tax tied to real estate. The details vary by county and city, but the basic idea is consistent: the local government sets a tax rate and applies it to a taxable value for your property. That revenue often funds schools, infrastructure, and local services.
If you’ve ever looked at a mortgage payment estimate and wondered why the “total” is so much higher than principal-and-interest, property taxes are usually one of the top reasons. Even if the bill is paid once or twice per year, it’s still a cost you effectively carry every month.
The simple math behind the estimate
The core calculation is straightforward:
- Assessed value = home value × (assessment ratio ÷ 100)
- Taxable value = max(0, assessed value − exemption)
- Annual property tax = taxable value × (tax rate ÷ 100)
If your area taxes full market value, keep the assessment ratio at 100%. If your county assesses at (say) 80% of market value, set it to 80%. Exemptions (like a homestead exemption) reduce the taxable value, so they reduce the tax bill, dollar for dollar, before the rate is applied.
Monthly escrow: how lenders think about property tax
Many mortgages use an escrow account for property taxes and insurance. In that setup, you pay an estimated monthly amount, and the servicer pays the tax bill when it’s due. Even if you don’t escrow, converting the annual number into a monthly “set‑aside” is a practical budgeting move.
This page gives you both: the annual estimate and a monthly escrow estimate (annual ÷ 12). If your tax bills are quarterly or semiannual, use “Payments per year” to see a rough per‑payment amount as well.
Common mistakes (and how to avoid them)
Most property tax confusion comes from mixing up rates, values, and timing. A few quick checks help:
- Using the wrong rate format: 1.25 means 1.25%, not 0.0125%. (The calculator expects percent.)
- Forgetting special districts: Some areas have additional school or improvement district rates that are added on top of the base rate.
- Not accounting for reassessment: A purchase price can trigger a reassessment (depending on local rules), changing the taxable value.
- Ignoring exemptions: If you qualify for a homestead exemption, veteran exemption, or senior exemption, it can materially reduce taxes.
If you’re house-hunting, it can help to calculate a baseline tax bill for each home and then add that monthly amount into your home affordability check. You’ll get a more realistic “all‑in” monthly cost.
Related calculators (use these together)
Property tax is rarely a standalone decision. Here are three fast next steps:
- Mortgage calculator , combine principal-and-interest with taxes and insurance to estimate a total payment.
- Rent vs buy calculator , include property tax as an ongoing ownership cost when comparing options.
- Home affordability calculator , sanity‑check whether the monthly cost fits your income and debt ratios.
You can also browse all tools on our calculators page.
FAQ
What is a typical property tax rate?
Rates vary widely by location. A “typical” range might be around 0.5% to 2.5% of value per year, but there are many exceptions. Use your county’s published rate (and include special districts if applicable) for the most useful estimate.
What’s the difference between market value and assessed value?
Market value is what the home could sell for. Assessed value is the value your local assessor uses for taxation, which may be equal to market value or a percentage of it. If your area taxes assessed value at a ratio (like 80%), set the assessment ratio accordingly.
How does a homestead exemption affect property taxes?
An exemption reduces the taxable value before the tax rate is applied. For example, a $25,000 exemption reduces the taxable base by $25,000, which lowers the annual bill by $25,000 × (rate ÷ 100).
Does this include special assessments or HOA fees?
No. This tool estimates property tax only. HOA dues, special one-time assessments, and utilities are separate costs that can also affect affordability.
Why do property taxes sometimes jump after buying a home?
In some areas, a sale triggers reassessment closer to the purchase price. Exemptions or caps may also reset when ownership changes. The result can be a higher taxable value than the previous owner paid on.