Why did my property taxes go up?

Your bill is your taxable value times the rates of the units that tax your home, minus any credits. So a higher bill comes from one of a few places. Put this year's bill next to last year's and you can usually find which.

By MillRate USA · Last reviewed 2026-10-31

Start with two bills side by side

Look at three lines on each: the taxable value (sometimes called net or assessed value), each unit's rate, and any exemptions or credits. Whichever changed is your answer. In Texas, the law requires the bill itself to show each unit's rate and taxes for the current and previous five years, which makes this easy.

1. Your value went up

This is the most common reason. Assessments follow the market, on a schedule that depends on the state. Many states limit how fast a home's taxable value can climb, so a bill can keep rising for years after prices level off, as the value catches up.

  • Texas limits a homestead's appraised value to a 10% rise a year.
  • Michigan limits taxable value to a rise of 5% or inflation, whichever is less, until the home sells. After a sale the cap resets, so a buyer's first bills can be much higher than the seller's.
  • Maryland's homestead credit stops state tax on any assessment increase above 10% a year, and counties set their own cap for local tax.
  • Iowa taxes homes on a share of assessed value that the state resets every year, 44.5345% for 2026–27 bills, so the same assessment can produce a different taxable value.

If the value looks too high, that's what you can appeal. See how to appeal your assessment, state by state.

2. A rate went up

Each unit, from the county and city to the school district and special districts, sets its own rate from its budget, and some increases need voter approval. Across 1,065 larger places we track, 524 raised their rate in the most recent year. Where rates rose most this year has every state.

A higher rate doesn't always mean a higher bill, and a lower rate doesn't mean a lower one. When values rise, a unit can cut its rate and still collect more.

3. You lost an exemption or credit

  • You bought the home. Most homestead benefits don't transfer with a sale. The seller's exemption ends and you need to apply for your own.
  • The benefit itself changed. Indiana's homestead deductions are being phased down: $48,000 plus a 40% supplemental deduction for taxes payable in 2026, $40,000 plus 46% for 2027. Iowa's homestead credit becomes a 10% exemption for taxes paid from September 2027.
  • A program ended or you no longer qualify, such as a senior freeze or rebate with an income limit.

Homestead exemptions by state covers what each state offers and where to apply. For Texas, see how to apply for the homestead exemption.

4. A revaluation reset everyone's value

In states where towns or counties revalue every few years rather than every year, such as Connecticut, New Jersey and North Carolina, a revaluation brings every assessment up to market at once. The rate usually falls sharply the same year, so the total collected doesn't jump. But homes whose value rose faster than the town's average pay more, and others pay less. That's a shift between owners, not an increase in the town's taxes.

5. A new unit or special district appeared on your bill

In Texas especially, special districts such as municipal utility districts, emergency services districts and hospital districts each add their own rate. A new district, or a district's debt for new roads and pipes, adds a line to the bill. Our Texas county pages list every unit, so you can check each one on your bill.

Check your rates

Each place page on this site shows the published rate for every year we have, so you can see whether your rate moved. Find yours on the states page, or start from a metro area: Houston area, Dallas–Fort Worth area, Austin area, Indianapolis area, Detroit area, Charlotte area, Raleigh–Durham area.

Sources

This guide explains how the system works. It isn't legal or tax advice. Your assessor and tax collector have the final word. Spotted an error? Email [email protected].