Are higher assessed values and higher tax rates the same thing?

No. The assessed value is the county's estimate of what your home is worth. The tax rate, often called millage, is set separately by the bodies that fund schools, roads, and services. Either one moving up raises your bill, independent of the other.

Does a higher tax bill mean my assessment is wrong?

Not automatically. Tax rates rise for reasons that have nothing to do with your home, and broad assessment increases can reflect real market shifts. A closer look makes sense only when your figure feels out of line with what similar homes on your street would sell for today.

Can both my assessed value and my tax rate go up in the same year?

Yes. Assessments and tax rates move on separate tracks set by different bodies. In any given year both can rise at once, which is why a single bill can jump more than homeowners expect even when neither change alone would feel dramatic.

Why Did My Property Tax Bill Go Up This Year? Explained

Your property tax bill can rise when the assessor's model values your home higher, when local tax rates climb, or when both happen in the same year.

Bright kitchen table with property tax paperwork, calculator, and laptop

Your property tax bill went up this year because the assessor's model produced a higher value for your home this cycle, local tax rates rose to fund local budgets, or both at once. Assessments and millage rates move on separate tracks, and either one can push your bill higher.

Why did the assessor's model value my home higher?

The county assessor uses a statistical model that weighs many variables to estimate every home's value at once. When that output lands higher than last year, the taxable value on your bill climbs with it. The model is reasonable in aggregate but can miss at the individual property level. Your bill is calculated on that assessed value, so a higher number means a larger bill even before tax rates enter the picture.

Why did local tax rates go up?

Tax rates, often called millage, are set by the local bodies that fund schools, roads, libraries, and emergency services. When those budgets grow, or when voters approve new levies, millage rises and every property tax bill in the district goes up with it. This is separate from what the assessor does. Rates can climb in a year your assessed value held flat, and both can move in the same year.

What does this mean for you?

Both drivers are normal. What is not normal is when the assessor's figure lands out of line with what similar homes on your street would sell for today. If your new number feels off for your neighborhood, the assessment side of the equation may be worth a closer look. FairAppeal reviews your home against its comparables and only files a property tax appeal if it makes sense. The Fair Appeal review is free, with no fee unless the appeal wins.

Look up if you are overpaying.

Frequently asked questions

Why did my property tax bill go up this year?: Two things can push it higher. The assessor's model may have produced a higher value for your home this cycle, or local tax rates may have risen to fund local budgets. Both can happen in the same year, which compounds the increase.
Are higher assessed values and higher tax rates the same thing?: No. The assessed value is the county's estimate of what your home is worth. The tax rate, often called millage, is set separately by the bodies that fund schools, roads, and services. Either one moving up raises your bill, independent of the other.
Does a higher tax bill mean my assessment is wrong?: Not automatically. Tax rates rise for reasons that have nothing to do with your home, and broad assessment increases can reflect real market shifts. A closer look makes sense only when your figure feels out of line with what similar homes on your street would sell for today.
Can both my assessed value and my tax rate go up in the same year?: Yes. Assessments and tax rates move on separate tracks set by different bodies. In any given year both can rise at once, which is why a single bill can jump more than homeowners expect even when neither change alone would feel dramatic.