Property Tax Calculator - Free Online Tool

Estimate your annual property tax, effective rate, exemption savings, and 10-year projection

Property taxes are one of the most significant recurring costs of homeownership, yet many homeowners are unsure exactly how their bill is calculated or how much they could save through available exemptions. Our free Property Tax Calculator gives you a clear, detailed breakdown of your tax liability — from assessed value and exemptions all the way to a 10-year projection showing how your taxes will grow as your property appreciates. Whether you are buying a new home, budgeting for the next year, or trying to understand your escrow payment, this calculator covers every variable. Enter your home's market value, your state or local tax rate (in percentage or mills), the applicable assessment ratio, and any exemptions you qualify for — including homestead, senior, veteran, and disability exemptions. The calculator instantly computes your annual and monthly tax, your effective tax rate, and how much you save compared to a no-exemption baseline. Property taxes fund a wide range of local services including public schools, county government, city infrastructure, and special districts such as fire departments and water authorities. Most jurisdictions split the total tax bill across these authorities, so the calculator lets you enter rates for each component separately (school, county, city, and special district) or use a single composite rate if you prefer. You can toggle between percentage and millage rate entry — 1 mill equals $1 per $1,000 of assessed value, or equivalently 0.1 percent of assessed value. The assessment ratio is the fraction of your market value that becomes the taxable assessed value. While most states assess residential property at 100 percent of market value, others use a statutory ratio — Tennessee assesses residential property at 25 percent, for example, while South Carolina uses just 4 percent of market value for primary residences. When you select your state, the calculator automatically fills in the typical assessment ratio and statewide average tax rate so you have a reasonable starting point, though you should always verify your exact local rate. Exemptions can dramatically reduce your tax bill. The homestead exemption — available in most states for primary residences — reduces your taxable value by a fixed dollar amount or percentage. Additional exemptions for seniors aged 65 and older, veterans, and individuals with disabilities can further lower the taxable base. Texas, for example, offers a $140,000 homestead exemption plus an additional $60,000 for seniors. Florida provides a $50,000 homestead exemption along with the Save Our Homes cap that limits how quickly your assessed value can increase. This calculator supports all four common exemption types with customizable dollar amounts, plus a free-form field for any additional local exemptions. For homebuyers and current owners with a mortgage, the escrow feature estimates your total monthly escrow payment by adding annual homeowner's insurance and PMI (private mortgage insurance) to your property tax, then dividing by 12. It also calculates the two-month RESPA cushion your lender is allowed to hold in reserve. This helps you budget accurately for your total monthly housing cost beyond principal and interest. The 10-year projection is one of the most valuable features for long-term planning. By entering an expected annual appreciation rate — historically 3 to 4 percent for U.S. residential real estate — the calculator shows how your property value, assessed value, and tax bill will compound over time. Property owners in high-appreciation markets may see their tax burden grow significantly faster than inflation, making this projection essential for retirement and cash-flow planning.

Understanding Property Taxes

What Is Property Tax?

Property tax is an ad valorem tax — Latin for 'according to value' — levied by local governments on real estate. The tax is calculated based on the assessed value of your property, which may differ from its market value depending on the jurisdiction's assessment ratio. Tax rates are set annually by local taxing authorities — counties, municipalities, school districts, and special districts — each of which typically levies its own rate. The combined rate, expressed as a percentage or in mills (thousandths of a dollar per dollar of assessed value), is applied to the taxable value of your property to produce your annual tax bill. Property taxes are the primary revenue source for local public schools and essential municipal services.

How Is Property Tax Calculated?

The calculation flows through four steps. First, determine the assessed value: multiply your property's market value by the local assessment ratio. Second, subtract all applicable exemptions from the assessed value to get the taxable value. Third, convert the tax rate — whether given as a percentage or in mills — to a decimal: a 1.5% rate equals 0.015, and 15 mills also equals 0.015. Fourth, multiply the taxable value by the rate decimal to get the annual tax. For example: a $400,000 home with a 100% assessment ratio, a $50,000 homestead exemption, and a 1.5% rate has a taxable value of $350,000, producing an annual tax of $5,250. Monthly, that is $437.50. The effective rate — $5,250 ÷ $400,000 — is 1.3125%, which is lower than the nominal 1.5% because of the exemption.

Why Does Property Tax Matter?

For homeowners, property tax is often the second-largest housing expense after mortgage interest — sometimes exceeding insurance, maintenance, and HOA fees combined. It is also one of the few housing costs that continues indefinitely and typically increases over time as property values rise. Understanding your property tax is essential for accurate monthly budgeting (especially since lenders collect it through escrow), for evaluating the true cost of homeownership in different locations, and for taking full advantage of exemptions that can save hundreds or thousands of dollars per year. For investors, the effective tax rate directly affects cash flow and return on investment calculations. Knowing how taxes will grow over a 10-year horizon is also critical for retirement income planning if you own property with a fixed income.

Limitations and Caveats

This calculator provides estimates based on the inputs you provide and cannot account for every local rule. Tax rates and assessment ratios vary not just by state but by county, city, and school district — the actual rate on your property may differ from the state average shown here. Many states also have homestead caps (like Florida's Save Our Homes 3% annual increase limit) or split-roll tax systems for commercial versus residential property that are not fully modeled here. Exemption amounts differ by jurisdiction and may be income-limited for senior and disability exemptions. Property tax assessments also occur on a schedule — often annually or biennially — so your current market value may not yet be reflected in your assessed value. Always verify your final tax liability with your local county assessor or tax collector's office before making financial decisions.

How to Use the Property Tax Calculator

Enter Your Home Value and Select Your State

Type your property's current market value (the price it would sell for today). Optionally select your state from the dropdown to automatically populate the typical state average tax rate and assessment ratio — this gives you a solid starting estimate that you can fine-tune with your actual local figures.

Set Your Tax Rate and Assessment Ratio

Enter your local tax rate as a percentage (e.g., 1.5%) or in mills (e.g., 15 mills). Use the toggle button to switch modes. Adjust the assessment ratio if your jurisdiction assesses at less than 100% of market value. If you know your school, county, city, and special district rates separately, open the authority breakdown and enter them individually for a detailed donut chart.

Add Any Applicable Exemptions

Check the boxes for exemptions you qualify for — homestead, senior (65+), veteran, or disability — and enter the dollar amount for each. If you are unsure of the exact exemption amount in your jurisdiction, use common values as a guide: homestead exemptions range from $25,000 to $140,000 in most states. Every dollar of exemption reduces your taxable value and lowers your bill.

Review Results and Explore Projections

Instantly see your annual tax, monthly payment, effective rate, and savings from exemptions. Add homeowner's insurance and PMI for an escrow estimate, enter an appreciation rate to see a 10-year projection chart and table, or switch to Compare mode to evaluate two properties side-by-side. Export to CSV or print for your records.

Property Tax FAQ

What is the difference between assessed value, taxable value, and market value?

Market value is what your home would sell for in an arm's-length transaction — it is the basis for all calculations. Assessed value is the portion of market value subject to taxation, determined by multiplying market value by the local assessment ratio (which can range from 4% to 100% depending on the state). Taxable value is the final figure after all exemptions are subtracted from the assessed value. Your actual tax bill is calculated by multiplying the taxable value by the applicable tax rate. For example, a $500,000 home in a state with a 100% assessment ratio and a $50,000 homestead exemption has a taxable value of $450,000. At a 1.5% rate, the annual tax is $6,750.

What is a millage rate and how do I convert it to a percentage?

A millage rate (or mill rate) expresses the property tax as dollars per $1,000 of assessed value. One mill equals $1 of tax per $1,000 of value, which is the same as 0.1% of assessed value. To convert mills to a percentage, divide by 10: 15 mills = 1.5%. To go the other way, multiply the percentage by 10: 2% = 20 mills. When you look up your county's millage rates — often listed by individual authority (school, county, city) — you can add all the rates together to get your total mill rate, then enter it in this calculator using the Mills toggle. For example, if your school district levies 15 mills, the county 8 mills, the city 5 mills, and a fire district 2 mills, your total is 30 mills or 3%.

How much can exemptions reduce my property tax?

Exemptions can produce substantial savings depending on the exemption amount and the local tax rate. A $50,000 homestead exemption at a 1.5% tax rate saves $750 per year. A $140,000 Texas homestead exemption at a 1.8% rate saves $2,520 per year. Adding a senior exemption of $60,000 on top of that saves another $1,080 per year. In some states, exemptions stack — a homeowner who qualifies for homestead, senior, and veteran exemptions simultaneously can apply all three deductions from their assessed value. Always check with your county assessor's office for the exact amounts available in your jurisdiction, as they vary significantly and some senior and disability exemptions have income limits.

What is an escrow account and how is the monthly payment calculated?

An escrow account is a holding account your mortgage servicer maintains to collect and pay property taxes and homeowner's insurance on your behalf. Each month, a portion of your mortgage payment goes into escrow. When your tax and insurance bills come due — typically once or twice a year — the servicer pays them directly from the escrow account. Your monthly escrow deposit equals your annual property tax plus annual homeowner's insurance plus any PMI (private mortgage insurance), divided by 12. Federal law (RESPA) allows lenders to hold up to two months of payments as a cushion reserve, which is included in your initial escrow setup at closing. This calculator shows both your ongoing monthly escrow and the initial cushion amount.

How do I find my exact local property tax rate?

Your exact tax rate is set by your local taxing authorities and can usually be found through several sources. Your most recent property tax bill lists the mill rates for each authority. Your county assessor's or treasurer's website typically publishes the current year's levy rates. Many states provide searchable online databases where you can look up rates by county, city, or school district. The state average rates shown in this calculator are useful for initial estimates and comparison, but they can differ significantly from your actual local rate. Suburban counties near major cities, for example, often have higher school district levies than rural areas. For the most accurate estimate, use the specific rates listed on your tax bill or your county's rate sheet.

Can I appeal my property tax assessment if I think it is too high?

Yes — property assessment appeals are a legitimate and relatively common process. If you believe your county has overestimated your property's market value, you can file an appeal with your local Board of Assessment Appeals or equivalent body. To build your case, gather recent comparable sales (comps) from your neighborhood showing lower values, note any errors in your property record (incorrect square footage, wrong number of bathrooms, etc.), and obtain an independent appraisal if warranted. Most jurisdictions have a strict appeal deadline — often 30 to 90 days after your assessment notice is issued — so act promptly. A successful appeal that reduces your assessed value by even 10% can save hundreds of dollars per year, indefinitely, as long as you own the property.