Effective property tax rate

What effective rate means

Your effective property tax rate is what you actually pay as a percentage of your home's market value. It's the most honest way to compare tax burdens across homes, neighborhoods, counties, and states because it folds together every variable that complicates a raw mill rate comparison: assessment ratios, exemptions, special districts, and caps.

Effective rate = Annual tax paid ÷ Home market value

Two homes can have very different mill rates and very similar effective rates — or vice versa. A 28 mill rate in a state that assesses at 70% of market value works out to roughly the same effective rate as a 19.6 mill rate in a state that assesses at 100%. The mill-rate comparison is misleading; the effective-rate comparison tells you what each homeowner actually pays.

National benchmarks

• US median: ~1.00% effective rate
• Below ~0.70%: low-burden (HI, AL, CO, LA, SC, DE, WY, WV, NV, AR)
• 0.70%–1.30%: middle-burden (most of the country)
• 1.30%–1.80%: high-burden (TX, OH, MI, IA, NE, PA, KS)
• Above 1.80%: very high-burden (NJ, IL, NH, VT, CT, NY)

Within any state, county-level variation is enormous. Texas's state median is around 1.80%, but Harris County (Houston) and Travis County (Austin) run meaningfully higher; rural East Texas runs lower. Always cross-check against a local source for the parcel you actually care about.

Why effective rate is the right metric

Use the effective rate when you're comparing across jurisdictions, when you're trying to project the lifetime cost of owning, or when you're sanity checking what a relocation would actually cost you. Use the mill rate only when computing your bill from your local assessor's data — it's a local working tool, not a comparison metric.

Worked examples

Example 1 — Suburban Texas. A home that recently appraised at $425,000. Last year's property tax bill: $6,800.

• $6,800 ÷ $425,000 = 1.60% effective rate
• Monthly burden: $567
• Each additional $100K of home value adds roughly $1,600/year in tax

Example 2 — California with Prop 13 protection. A home with a market value of $1,100,000 but assessed value of $385,000 (long-time owner). Annual tax bill: $4,620.

• $4,620 ÷ $1,100,000 = 0.42% effective rate on market value
• $4,620 ÷ $385,000 = 1.20% rate on assessed value
• Prop 13's 2%/year cap drives the effective rate well below the headline rate

Example 3 — New Jersey high-tax town. A $625,000 home with a $14,200 annual tax bill.

• $14,200 ÷ $625,000 = 2.27% effective rate
• Monthly burden: $1,183
• For context, this is more than 2× the US median

Common mistakes

• Using assessed value instead of market value. If you plug your assessed value into the calculator, you'll get the rate applied to assessed value (which is just your mill rate divided by 10). The whole point of the effective rate is to compare against actual market value.
• Forgetting to add special assessments. Mello-Roos (CA), CDDs (FL), and MUDs (TX) often appear as separate line items but are part of your real tax burden. Include them in the "tax paid" input.
• Using outdated home value. Pulling your purchase price from 2018 will understate the rate. Use a current Zillow / Redfin / county market estimate, or a recent appraisal.
• Mixing tax years. Compare the most recent full-year tax paid against the current market value. Mid-year valuations and prior-year bills create misleading rates.
• Comparing against the wrong benchmark. National averages mask huge state and county variation. A 1.6% rate is "high" relative to the US median but utterly normal in much of Texas, Ohio, or Pennsylvania.

Frequently asked questions

What is a "high" effective property tax rate?

Generally, anything above 1.5% is considered high-burden in a national context, and above 2.0% is very high-burden — common in New Jersey, Illinois, parts of New Hampshire, Vermont, and Connecticut. Below 0.7% is low-burden, common in Hawaii, parts of Alabama, and Colorado.

Should I use my market value or assessed value?

Use market value for an effective rate that compares meaningfully across jurisdictions. Use assessed value if you want to compute your local tax bill from the mill rate, which is a different question (see our mill rate calculator).

How does the effective rate differ from the mill rate?

Mill rate is the local rate set by taxing authorities, applied to assessed value. Effective rate is what you actually paid divided by your home's current market value. The two are equal only when (a) the assessment ratio is 100% and (b) there are no exemptions in play. In every other case, effective rate is lower than the mill-rate-implied percentage.

Does my effective rate include my mortgage escrow cushion?

No. Use the actual tax paid to the county — not what your mortgage servicer collected. Your servicer collects extra (the RESPA cushion) and may pay slightly different amounts in different months. The actual tax paid is what's reported on your county tax record and on your year-end mortgage statement (Form 1098).

Why is my neighbor's effective rate lower?

Same five reasons as the mill-rate version of this question: different exemptions claimed (homestead, senior, veteran), an older assessment that didn't catch a recent market move, a successful prior appeal, an abatement, or a different special-district overlay. In states with caps (CA, FL, TX), the cap freezes long-time owners' assessed values well below market — they pay a much lower effective rate than recent buyers next door.

Does effective rate change every year?

Yes — both halves of the equation move. Your tax paid moves with mill rate changes and reassessments; your home's market value moves with the housing market. In a year of rapid appreciation with flat mill rates, your effective rate falls; in a year of reassessment without appreciation, it rises.

How do I lower my effective rate?

Three real levers: (1) claim every exemption you qualify for (homestead, senior, veteran, disability), (2) appeal an inflated assessment, or (3) relocate to a lower-burden jurisdiction. The first two are always-available; see our homestead and appeal calculators.

Is the effective rate the same as the "tax rate" my realtor mentioned?

Often — realtors typically quote effective rates because they're more useful for buyers comparing homes. But always confirm whether the figure includes special districts (CDDs, Mello-Roos, MUDs), which can add 0.5–2.0% on top of the headline rate.