Assessed Value vs Market Value vs Taxable Value

The three values in plain English

Property tax bills use value words in a specific way. The terms vary by state and county. You may see just value, appraised value, fair market value, equalized assessed value, net taxable value, capped value, or limited value.

Do not worry first about the exact label. Look at what the number is being used for.

Market value means estimated sale value

Market value is usually the broadest value number. It is meant to estimate what the property would sell for in a normal sale, on a specific assessment date, with a willing buyer and seller.

The Texas Comptroller explains market value as the price a property would transfer for under prevailing market conditions, with normal exposure to the open market and without one side being forced into the deal. The New York State Department of Taxation and Finance says market value is how much a property would sell for under normal conditions.

That does not mean the assessor has inspected every room. Many assessors use mass appraisal. They look at sales, property records, land, size, age, condition, location, building type, and similar facts. The King County Assessor describes using comparable sales and cost methods. The Cook County Assessor describes using property characteristics and sales of similar homes.

Market value can be wrong. The record may have the wrong square footage. It may miss damage. It may compare your home to better homes. It may count an improvement that is not there. It may also lag behind a changing local market.

Online real estate estimates can be a clue, but they are not the official record. If you challenge market value, you usually need facts the assessor or appeal board can use, such as comparable sales, corrected property details, photographs, repair estimates, maps, appraisals, or sales data from the right assessment period.

Assessed value means the value under tax assessment rules

Assessed value is the number assigned for property tax purposes. In some places, it is close to market value. In other places, it is a percentage of market value. In some states, it may be limited by caps, freezes, classifications, or special rules.

New York gives a simple example: if a community assesses at 30 percent of market value, a home with a market value of $200,000 would have a $60,000 assessment. Cook County says residential assessed value is generally 10 percent of fair market value under county rules. California’s State Board of Equalization explains that assessed value is the dollar value assigned by the county assessor for property tax purposes, while market value is the price a property would bring on the open market.

Some systems limit how fast assessed value can grow. California’s Proposition 13 rules generally limit annual growth in a property’s factored base year value unless there is a change in ownership or new construction. Florida’s Save Our Homes system can create a difference between just value and assessed value for a homestead property. Texas has a residence homestead appraisal limitation that can limit annual increases in appraised value for qualifying homesteads.

This is one reason your neighbor’s assessed value may be lower than yours even when the houses look alike. One owner may have bought years earlier. One property may have a homestead cap. One may have new construction. One may have lost an exemption. One may be in a different class or taxing district.

Taxable value is the value used before the tax rate

Taxable value is often the number that matters most on the final bill. It is usually the value after exemptions, assessment limits, and other adjustments that apply before the tax rate is used.

The Florida Department of Revenue shows a clear formula for its system:

• Just value minus assessment limits equals assessed value.
• Assessed value minus exemptions equals taxable value.
• Taxable value multiplied by the millage rate equals total tax liability.

Your state may use different words. The idea is still helpful. Taxable value is usually the value after the official reductions that apply before the rate is used.

Here is a simple learning example. It is not a real state program and does not show any official exemption amount:

Some bills are more complicated. Some exemptions apply only to certain taxing districts. Some charges are flat fees or special assessments. That is why it helps to read every line, not only the largest value.

Why the values do not match

Your market value, assessed value, and taxable value may differ because of:

• assessment ratios or equalization factors;
• homestead, senior, disability, veteran, or surviving spouse exemptions;
• assessment caps, freezes, or annual increase limits;
• new construction, demolition, damage, or property classification changes;
• school, city, county, fire, library, water, or special district charges;
• voter-approved bonds or local measures;
• special assessments or fixed charges on the bill.

A higher bill does not always mean the assessor raised the value. King County explains that residential taxes depend on assessed value, total taxable property value in the community, voter-approved measures, and local government budgets. It also notes that a value increase does not create a dollar-for-dollar tax increase.

How values connect to property tax relief

A value problem and a relief problem are not always the same problem.

Where to find these numbers

Assessment notice

This notice usually focuses on value. It may show market value, assessed value, prior-year value, land value, building value, classification, exemptions on record, and appeal information. Some notices show the appeal deadline.

Property record card or parcel page

This is the assessor’s file for the property. It may show square footage, lot size, year built, property class, additions, condition, sales history, and sketches. If this record is wrong, the value may be wrong too.

Tax bill

The bill usually focuses on payment. It may show taxable value, tax rates, taxing districts, exemptions, special charges, payment deadlines, installment options, penalties, and the tax collector or treasurer office.

For more help with the bill itself, see our guide on how to read your property tax bill.

Signs there may be an assessment issue

Look more closely if:

• the market value is higher than recent sales of similar nearby homes;
• the property record has the wrong size, year built, condition, or features;
• the record shows an improvement that does not exist;
• your home is compared with homes in better condition or a stronger location;
• the wrong property class or assessment ratio appears to be used;
• an exemption, cap, or classification disappeared without explanation;
• damage, demolition, or disaster impact is missing from the record.

Appeal boards usually want evidence about value, property facts, classification, or assessment fairness. A bill being hard to afford may matter for some relief programs, but it may not prove that the assessed value is wrong.

When the problem may be something else

The value may be correct, but the bill may still be wrong or too high because another issue is involved.

This may be an exemption or billing issue if:

• your homestead exemption is missing;
• a senior, disability, veteran, or surviving spouse exemption may apply but is not listed;
• ownership changed after a move, inheritance, divorce, marriage, or death;
• the problem is a penalty, interest charge, delinquency, payment plan, tax lien, or tax-sale notice;
• the increase comes from a tax rate, local levy, bond, or special assessment.

The assessor often handles value and exemptions. The treasurer or tax collector often handles billing, payments, penalties, and delinquent taxes. State revenue or tax agencies may handle some rebates and credits.

What to gather before you call or appeal

• assessment notice and tax bill;
• parcel number, account number, or Property Index Number;
• property record card or online parcel page;
• recent comparable sales, if you question market value;
• photos, repair estimates, inspection reports, or contractor letters, if condition matters;
• deed, closing statement, or sales documents, if ownership or purchase date matters;
• copies of exemption approvals, denials, renewals, or prior-year bills;
• the notice date and any deadline shown on the paper.

If you are helping someone else, ask whether the office needs written permission before discussing the account.

Questions to ask the official office

• Which number is the market value?
• Which number is the assessed value?
• Which number is the taxable value?
• What assessment date was used?
• Is my property assessed at full market value or a percentage?
• Are any caps, freezes, or limits applied?
• Which exemptions are currently on the account?
• Do the exemptions apply to every taxing district?
• Who corrects a wrong property record?
• What is the appeal deadline and process?

Write down the office, the date, and the answer. If a deadline is close, follow the official written process instead of relying only on a phone call.

Appeals are about facts and deadlines

If you believe the assessor’s value is too high, check the official appeal process right away. Deadlines can be short and local. Some places begin with an informal review. Others require a formal appeal form, petition, board hearing, or online filing.

The New York tax department tells property owners to check their assessment annually and contact the assessor if the assessment or estimated market value seems too high. If the assessor does not reduce it, the owner may contest the assessment. Other states and counties use different steps and names.

A good appeal usually focuses on recent comparable sales, wrong property characteristics, condition problems, incorrect classification, unequal treatment if allowed, or damage as of the assessment date.

An appeal is not the same as asking for a senior exemption, homestead exemption, disabled veteran exemption, rent rebate, deferral, or payment plan. If you are not sure which path fits, ask: “Is this a value appeal, an exemption application, or a billing/payment issue?”

For a fuller walk-through, see our property tax appeal guide.

Deadlines can decide what options are still open

Do not wait until the tax bill is due to ask about the value. In many places, the value appeal deadline comes before the final payment deadline. By the time the bill arrives, the assessment appeal window may already be closed.

If you are late, ask the official office whether any correction, late exemption application, clerical error process, certificate of error, abatement, refund, payment plan, or hardship option exists. These options are not available everywhere, and each one has its own rules.

What renters should know

Renters usually do not receive the property tax assessment notice for the building they rent. They also usually cannot apply for a homeowner homestead exemption on a property they do not own.

Still, property tax values can matter to renters. Some states have renter rebate or renter credit programs that use rent, income, age, disability, or a property-tax-related formula. Renters should look for renter-specific rebates, credits, or circuit breaker programs, not homeowner exemptions.

A quick way to read your own notice

1. Confirm the parcel or account number.
2. Find the market value or estimated fair market value.
3. Find the assessed value and whether it is full value, a percentage, or capped.
4. Find the taxable value and any exemptions subtracted.
5. Look for tax rates, millage rates, levies, and special charges.
6. Find the appeal deadline and exemption deadline, if shown.
7. Identify the office for value questions and the office for payment questions.

Use the exact word from the notice when you call. “My market value looks too high” is a different question from “my exemption is missing” or “my taxable value did not subtract the exemption.”

If you think something is wrong, start with the right office

Independent editorial note