Your Tax Bill Went Up While Your Home Lost Value

Property taxes rose in 2025 while home values fell. That split, the first in years, is the fact worth sitting with if you plan to sell.

Per ATTOM, the average single-family tax bill rose 3 percent to $4,427 in 2025, while the average home value fell 1.7 percent to $494,231. The two numbers used to move together. Now they move against each other, and that gap is the whole story for a seller.

Watch the effective rate, not the bill

A rising bill reads like inflation. The sharper signal is the effective rate, the bill measured against what the home is actually worth. Nationwide that rate hit 0.9 percent in 2025, up from 0.86 percent in 2024 and the highest since 2020.

Read it mechanically. The rate climbed because the bill rose while the value fell. Local governments levied $396.8 billion on more than 89.6 million single-family homes in 2025, up 3.7 percent from 2024. They budget off payroll, pensions, schools, and debt service, then set a levy to fund it. When values dip, the mill rate rises to hit the same dollar target. The bill is sticky upward and slow to follow prices down.

The lag is structural. Most assessors work off one to two years of trailing sales, so a value that peaked in 2024 still feeds the 2025 and 2026 assessment. You can be over-assessed relative to today's market and still owe more than last year.

Why this reaches the seller, not just the taxpayer

A buyer does not shop your price. A buyer shops a monthly payment, and that payment includes taxes and insurance, not just principal and interest. When the tax line rises, it eats the P&I budget of a payment-constrained buyer and shrinks the pool that can clear your asking price.

The escrow data shows how fast this compounds. Per CNBC, escrow costs rose about 30 percent in 2025 and are up roughly 45 percent over five years, and the average escrow shortage runs $2,157. Per Scotsman Guide, escrow now accounts for 30 percent or more of a typical monthly payment in 35 states.

Stack that on financing that has not eased. Per Freddie Mac, the 30-year fixed averaged 6.66 percent the week of August 27, 2026, above the 6.56 percent of a year earlier. A buyer eyeing your listing absorbs a bigger tax escrow, a bigger insurance escrow, and a rate that has not dropped. In high-tax metros, the tax bill is now a live objection at the offer table, not a footnote at closing.

The move in a high-tax state

Geography decides how hard this bites. New Jersey posted the highest average bill at $10,499, followed by Connecticut ($8,901), New Hampshire ($8,174), Massachusetts ($7,904), and New York ($7,732). New Jersey's bill runs nearly 10 times West Virginia's $1,081 average. A $10,000 annual tax line is roughly $830 a month of a buyer's payment before a dollar of principal. If you own in one of these states, track where your local market sits before you price.

If your home is over-assessed relative to where the market actually trades, that inflated bill drags on your sale, not just your wallet. Winning an assessment appeal before you list lowers your carrying cost while the home sits and lets you market a lower, verified tax figure to payment-sensitive buyers. Most sellers treat the assessment as fixed. It is contestable, and where values have slipped below assessed values, the appeal is more winnable than usual. Our homeowner guides walk through the appeal and pricing steps.

The meter is running

The "wait for prices to recover" plan carries a meter that runs against you. Our data across 26,274 ZIP markets puts the typical US home near $289,803 in July 2026, up 3.0 percent on the year. At the 0.9 percent effective rate, the tax on that home runs near $2,600 and climbs about 3 percent a year whether or not your value does. That is the rent you pay to hold an asset you intend to sell.

Run the number this week: pull your current assessment, compare it against recent local sale prices, and file an appeal if the assessment sits above the market. The tax line is the one part of your carrying cost that only moves up.