Maricopa county property tax: rates, bills, appeals, and exemptions

Last updated 2026-07-09

How does Maricopa County property tax actually work?

Arizona property tax runs on two numbers, and that trips up almost every homeowner the first time. The Maricopa County Assessor sets a Full Cash Value (FCV), which is supposed to reflect what your home would sell for, and a Limited Property Value (LPV), which can rise no more than 5% per year for residential property. Your bill is based on the LPV, not the FCV. That 5% cap is the state's built-in brake against runaway bills when the market spikes.

The LPV gets multiplied by an assessment ratio to produce your Assessed Value (AV). For residential property (Class 3), that ratio is 10% under Arizona Revised Statutes section 42-15003 ^[1]. So if your LPV is $300,000, your assessed value is $30,000. That $30,000 is what your tax rates are applied to.

Rates come from every taxing district that overlaps your parcel: the county, your school district, a fire district, a community college district, maybe a library or flood-control district. They report their levies to the County, and the Assessor combines them into a single rate expressed as dollars per $100 of assessed value. The composite rate changes depending on where you sit inside Maricopa County, but the statewide statutory cap on the primary tax rate is $10 per $100 of assessed value for most purposes ^[2].

The Maricopa County Treasurer then sends the bill. One property, one bill, two installment due dates.

What are Maricopa County property tax rates right now?

The effective rate (tax paid divided by full market value) for Maricopa County residential property averaged roughly 0.59% to 0.63% in recent years, depending on which taxing district you sit in ^[3]. That is low next to states like Illinois or New Jersey. But the rate applied to your assessed value looks much higher, because the 10% assessment ratio shrinks the base it hits.

Here is the math on a real example. Say a home has a Full Cash Value of $400,000 and an LPV of $350,000 (lower than FCV because of the 5% annual cap). Assessed value at 10% = $35,000. If the composite rate in your district is $10.50 per $100 of AV, your annual bill is $35,000 x 0.1050 = $3,675. Effective rate: $3,675 / $400,000 = 0.92% of FCV. Rates swing hard by city and school district.

Maricopa County publishes the specific levy rates for every taxing district each year in its Tax Rate Report. Look up your parcel's rate at the Maricopa County Assessor's parcel search at mcassessor.maricopa.gov ^[4]. Enter your address or AIN (Assessor's Identification Number) and the site shows your FCV, LPV, AV, and current tax summary.

Readers coming from la county property tax or santa clara property tax will notice Arizona's assessment-ratio system shrinks the taxable base differently than California's Proposition 13 does. The end result, a below-market effective rate, lands in a similar place.

When are Maricopa County property taxes due?

Arizona splits the tax into two installments. Miss either one and interest starts accruing at 16% per year, charged monthly ^[5].

Installment	Due Date	Covers
First half	October 1 (delinquent after November 1)	Current tax year, first half
Second half	March 1 (delinquent after May 1)	Current tax year, second half
Full year (pay early)	January 3 of the tax year	Entire year, 2% early payment discount

The October 1 due date catches people off guard because most states bill after the year ends. Arizona bills for the current year while it is still happening. Postmarks count. If you mail a check, it needs a postmark by November 1 (for the first installment) to dodge the penalty.

You can pay online through the Maricopa County Treasurer's site, by mail, or in person. Online tax payment for property options at the Treasurer's portal take credit cards and e-checks, though credit card payments carry a convenience fee.

If your mortgage servicer pays your taxes through escrow, they handle the payment, but you are still on the hook for making sure it happens. Pull the Treasurer's records at treasurer.maricopa.gov and confirm payment after each due date. Servicer errors happen more than you would think.

How is your Maricopa County assessed value determined?

Every January, the Maricopa County Assessor mails a Notice of Value (NOV) showing the full cash value and limited property value for the coming tax year. The 2025 NOV, for example, reflects the value the Assessor assigned for tax year 2025, based on market conditions from the prior calendar year. There is always a one-year lag baked into the process.

For single-family homes, the Assessor runs a mass appraisal model driven by comparable sales. The office handles about 1.6 million parcels ^[4], so individual inspections are rare. The model uses square footage, age, construction quality, location adjustments, and neighborhood sales to estimate FCV. Errors are common. Outdated comps, wrong square footage in county records, and no accounting for condition all show up in assessments.

The LPV on a home you have owned for years may sit well below the FCV because of the 5% cap. But when you buy, the LPV resets toward the FCV in the first year of ownership, which can mean a real jump. Arizona Revised Statutes section 42-13302 governs how the limited value gets calculated ^[1].

The Assessor also sorts property into use classes. Class 3 (owner-occupied residential) gets the 10% assessment ratio and access to the Owner-Occupied Tax Credit. Rental residential property is usually Class 4, assessed at 10% but without the owner-occupied credit. Getting your classification right matters. A home you actually live in that is misfiled as a rental is costing you money.

How do you appeal your Maricopa County property tax assessment?

You have two formal ways to challenge your value, and the deadlines are strict.

The first is an informal appeal straight to the Assessor. File an Appeal of Assessor's Valuation (Form 82130) within 60 days of the mailing date printed on your Notice of Value, which usually lands in January, putting the informal deadline around mid-March ^[6]. The Assessor reviews it and may adjust the value with no hearing. This is the right first step for most homeowners. It costs nothing, the form is short, and adjustments do happen.

The second is a formal petition to the Maricopa County Board of Equalization (BOE). The petition deadline is December 15 of the year the NOV was mailed (for a 2025 NOV, that is December 15, 2025) ^[6]. The BOE is an independent quasi-judicial body. You present evidence, they rule. If you disagree with the ruling, you can take the case to the Arizona Tax Court, though by then most people either accept the result or hire an attorney.

For the informal appeal, bring three to five recent comparable sales (closed within 12 months, similar size, same neighborhood) showing your home is worth less than the Assessor's FCV. Print the comp sheets from the Assessor's parcel search or a free real estate portal. Note any condition problems the comps do not have: deferred maintenance, a dated kitchen, foundation cracks. The Assessor's model cannot see inside your house.

For BOE hearings, the Assessor's office publishes a guide on evidence requirements ^[6]. If you want a step-by-step framework for gathering, organizing, and presenting comps, TaxFightBack's appeal kit walks through the exact Arizona process without a contingency firm taking 30 to 50% of your first-year savings.

One number worth holding onto: the Arizona Department of Revenue reported that roughly 55,000 assessment appeals were filed statewide in a recent year, and a meaningful share resulted in reductions ^[7]. Nobody publishes a clean county-level success rate for Maricopa specifically, but assessors do move when the evidence is credible.

What exemptions can lower your Maricopa County property tax bill?

Several exemptions and credits apply here. Some are automatic. Others need an application every year.

Owner-Occupied Classification (Class 3): If you own and live in the property as your primary residence, you notify the Assessor of owner-occupancy to lock in Class 3 classification. Class 3 also makes you eligible for the Owner-Occupied Tax Credit, which the state provides as a rebate against your primary tax levy ^[8].

Senior Property Valuation Protection ("Senior Freeze"): Arizona freezes the Limited Property Value for qualifying seniors. You must be 65 or older, have owned and lived in the home for at least two years, and meet income limits. For tax year 2024, the limit was $43,872 for a single owner or $54,840 for two or more owners ^[8]. The freeze locks your LPV at the amount in effect when you qualify, so even if the market climbs, your tax base holds flat. Apply at the Maricopa County Assessor's office by September 1.

Disabled Veterans Exemption: Arizona provides a property tax exemption for totally disabled veterans and their surviving spouses. The amount depends on assessed value and income, and the Arizona Department of Revenue sets the income and asset limits each year ^[7]. Applications go to the Assessor.

Widows/Widowers Exemption: Surviving spouses of Arizona residents may qualify for a modest exemption (the statutory amount is set in A.R.S. section 42-11111) ^[1]. Income and asset limits apply.

Federal and State Tax Deduction: Property taxes on your primary residence are deductible on Schedule A if you itemize federally, subject to the $10,000 SALT cap under current law. Arizona also allows a deduction for property taxes on the state return.

None of these get applied automatically unless the Assessor already has your qualifying information on file. Check your current property record to confirm your classification and whether any exemptions show up.

How does the Maricopa County Assessor's office work, and how do you contact them?

The Maricopa County Assessor is an elected official who values all real and personal property in the county for tax purposes. The office handles roughly 1.6 million parcels, making it one of the largest assessment jurisdictions in the country ^[4].

The main office is at 301 W. Jefferson St., Phoenix, AZ 85003. There is an online portal at mcassessor.maricopa.gov where you can look up your parcel, download your current Notice of Value, check classification, and start an informal appeal. Phone contact exists, but wait times run long during appeal season (February through April).

For appeals, the office takes submissions by mail, in person, or through the online portal. If you are petitioning the Board of Equalization, those go to the BOE directly, not through the Assessor.

The Assessor publishes a residential appeal guide each year ^[6]. Read it before you file. It tells you exactly what evidence the reviewers want to see, which saves time and improves your odds.

What is the difference between Full Cash Value and Limited Property Value?

This is the question that stumps almost every Maricopa County homeowner reading a Notice of Value for the first time.

Full Cash Value (FCV) is the Assessor's estimate of what your property would sell for in an arm's-length deal. It is supposed to track the market, and in a rising market it can climb fast year to year.

Limited Property Value (LPV) is what you actually pay taxes on. Arizona law caps annual LPV increases at 5% for most residential property. So if you bought years ago and the market ran up, your LPV may sit well below your FCV. When you buy, or when ownership transfers, the LPV resets toward the FCV (or the legally required starting point under A.R.S. 42-13302) ^[1]. That reset shocks new buyers who compare their bill to what the previous owner paid.

When you appeal, you are almost always appealing the FCV, because that is the Assessor's market estimate and the spot where errors show up most. A successful FCV cut feeds through to a lower LPV over time, or right away if the LPV already equals the FCV.

One more thing. The Arizona Department of Revenue audits county assessors to check that FCV estimates stay within an acceptable range of actual sale prices (the assessment-to-sales ratio study) ^[7]. If the Assessor is systematically over-assessing your neighborhood, that study will catch it, and it can be useful evidence in a BOE hearing.

How do Maricopa County property taxes compare to other large counties?

Context matters. Maricopa is one of the most populous counties in the country, and its effective residential rate sits well below the national median of around 1.1% of home value reported by the Tax Foundation ^[3].

County / Metro	Approx. Effective Rate	Notable Feature
Maricopa County, AZ	~0.59-0.63%	5% LPV cap, 10% assessment ratio
Los Angeles County, CA	~0.72%	Prop 13 1% base rate, voter add-ons
Santa Clara County, CA	~0.73%	Prop 13 structure, high base values
Miami-Dade County, FL	~0.89%	Homestead exemption offsets
Hillsborough County, FL	~0.93%	No state income tax context
Hennepin County, MN	~1.08%	Higher rates, layered exemptions
NYC (Manhattan)	~0.88% class 1	Complex 4-class system

Sources: Tax Foundation 2023 state-by-state data ^[3]; county assessor sites for individual figures (rates vary by district within each county; these are county-level averages).

The lower rate in Maricopa is partly structural (the LPV cap and 10% ratio) and partly a function of Arizona's lower home price history compared to coastal California, though Phoenix-area prices rose sharply from 2020 to 2023. If your FCV jumped 30% in 2022 and 2023, your LPV is still catching up to it at 5% per year, meaning your bills keep rising for several years even if the market flattens. That is exactly the scenario where a timely FCV appeal pays off most.

If you own property in other high-population counties, we cover miami dade property taxes, hillsborough county property tax, and nyc property tax in detail.

What happens if you don't pay Maricopa County property taxes on time?

Late payment triggers a penalty right away, no grace period. Arizona statutes set the delinquency interest rate at 16% per year, accrued at 1.33% per month on unpaid amounts ^[5]. On a multi-thousand-dollar bill, that adds up quickly.

If taxes stay unpaid, Maricopa County sells the tax lien at a public auction (the tax lien certificate sale), usually held in February for the prior year's delinquencies. An investor buys the lien and earns the state-set interest rate. You redeem the lien by paying the original tax plus all accrued interest to the investor. If you do not redeem within three years, the lienholder can apply for a treasurer's deed and potentially foreclose ^[5].

None of this is inevitable. The county has a payment plan for qualified taxpayers facing hardship. Call the Maricopa County Treasurer early, before the lien sale. Waiting until after the lien sells makes it more expensive, because now you are dealing with a private investor instead of the county.

If you are disputing your value, pay the bill first anyway. Paying under protest preserves your appeal rights and stops the penalty clock. You cannot refuse to pay just because you disagree with the assessment.

Can you appeal after the deadline, or what if you just bought the house?

Short answer: almost never. The December 15 BOE deadline is firm under Arizona law ^[6]. The informal appeal window (about 60 days from the NOV mailing) has a little more give in practice, but do not count on it.

New buyers have one option people miss. If you close on a property and the prior owner did not appeal, you can still petition the BOE as the new owner within the normal deadline window. The notice of value is tied to the parcel, not the previous owner. Pull the NOV for the parcel you are buying (or just bought) from the Assessor's parcel search and check whether the deadline has passed.

Miss all the deadlines and your best move is to prep now for next year. Watch for the new NOV in January, gather comps ahead of time, and file promptly. The Assessor sets values annually, so every year is a fresh shot.

One more thing. If the Assessor made a clerical error (wrong square footage, wrong land area, misclassified use), you can request a correction outside the normal appeal cycle under A.R.S. 42-16254 ^[1]. Clerical errors are a different animal from valuation disagreements, and the process is more administrative. Call the Assessor's office directly for that.

What evidence actually wins a Maricopa County property tax appeal?

Reviewers at the Assessor's office and the BOE hear hundreds of appeals. Vague statements like "the market dropped" or "my neighbor pays less" go nowhere. What works is specific, documented evidence tied straight to your parcel.

Comparable sales are the strongest single piece of evidence for residential appeals. You want closed sales (not list prices) within 12 months, within roughly one mile, for homes within 15 to 20% of your square footage, similar age and construction. The Assessor's parcel search and the Arizona MLS (through a Realtor or a free portal) are your best sources. Pull three to five comps, calculate price per square foot, and show that your FCV exceeds what comparable homes actually sold for.

Condition evidence is the second lever. The mass appraisal model assumes average condition. If your home has deferred maintenance, a dated kitchen, an aging roof, or foundation issues, those pull value below the model's output. Photos, contractor estimates, and inspection reports all document it.

Assessment-to-sales ratio evidence carries weight in BOE hearings. If the Arizona DOR's ratio study shows the Assessor over-assessing your area, you can cite that study directly ^[7]. That is an argument that your whole neighborhood, more than your specific house, is valued too high.

For commercial property or larger portfolios, an independent appraisal by a licensed Arizona appraiser matters. For a typical single-family home, you almost certainly do not need one. Comp evidence is enough.

TaxFightBack's appeal kit includes editable comp worksheets and a Maricopa-specific evidence checklist so you are not starting from a blank page.

For a deeper look at building a comp-based evidence file in any county, see our guide to property tax taxation.

Frequently asked questions

When does Maricopa County mail the Notice of Value?

The Maricopa County Assessor typically mails Notices of Value in January for the current tax year. The exact date varies; the 2025 NOVs went out in early January 2025. Check your mail carefully in January and note the mailing date printed on the notice, because the informal appeal deadline runs 60 days from that date.

What is the Maricopa County property tax rate per $100 of assessed value?

The composite rate varies by taxing district. It commonly falls between roughly $8.00 and $13.00 per $100 of assessed value depending on your city, school district, and special districts. Look up your specific parcel at mcassessor.maricopa.gov to see the exact rate applied to your AIN. The Arizona statutory primary tax rate cap is $10 per $100 for most purposes.

How do I look up my Maricopa County property tax bill?

Go to the Maricopa County Treasurer's website (treasurer.maricopa.gov) and search by your Assessor Identification Number (AIN), owner name, or property address. You can view current and past bills, payment history, and whether a tax lien has been sold on the parcel. The Assessor's portal (mcassessor.maricopa.gov) shows valuation details separately.

Is there a senior property tax freeze in Maricopa County?

Yes. Arizona's Senior Property Valuation Protection program freezes the Limited Property Value for qualifying homeowners age 65 or older who meet income limits (approximately $43,872 single or $54,840 for two owners for tax year 2024) and have owned the home for at least two years. The application deadline is September 1 each year. File at the Maricopa County Assessor's office.

What is the deadline to appeal a Maricopa County property tax assessment?

You have two deadlines. The informal appeal to the Assessor is due within 60 days of the Notice of Value mailing (roughly mid-March for January NOVs). The formal petition to the Board of Equalization is due December 15 of the year the NOV was issued. The BOE deadline is statutory and hard; miss it and that avenue closes for the year.

What is the difference between the Assessor and the Treasurer in Maricopa County?

The Assessor sets the value of your property and its classification, which fixes your taxable base. The Treasurer calculates and collects the actual bill based on the Assessor's values and the rates set by taxing districts. Appeals about value go to the Assessor or BOE. Questions about paying, penalties, or tax liens go to the Treasurer.

Does paying off your mortgage change your Maricopa County property tax?

No. Property tax in Arizona is assessed against the property, not the owner's equity or mortgage status. Paying off your mortgage does mean your lender stops managing your escrow account, so you become responsible for paying the two installments directly. Set a reminder for October 1 and March 1 so you do not miss a payment now that no servicer is making it for you.

How much does it cost to appeal a Maricopa County property tax assessment yourself?

Filing the informal appeal or BOE petition costs nothing. You do not need an attorney or an appraiser for a typical single-family residential appeal. Your main investment is time: pulling comps, completing the form, submitting evidence. Contingency firms typically charge 25 to 50% of the first year's savings; doing it yourself keeps the entire reduction.

Can a landlord or investor appeal a Maricopa County rental property assessment?

Yes. Investment residential property (Class 4) is assessed at 10% of LPV, the same ratio as owner-occupied, but without the Owner-Occupied Tax Credit. The appeal process is identical. For commercial property or large multifamily buildings, the income-capitalization approach may be stronger evidence than comps, and a licensed appraiser becomes more worthwhile.

What happens if the Board of Equalization rules against my appeal?

You can appeal a BOE ruling to the Maricopa County Superior Court Tax Court division within 60 days of the ruling. At that stage it becomes formal litigation, and most homeowners either accept the BOE result or retain a property tax attorney. Tax Court appeals make financial sense mainly when the disputed tax savings top several thousand dollars per year.

Does Maricopa County have a homestead exemption?

Arizona does not have a traditional homestead exemption that reduces assessed value the way Florida or Texas does. The equivalent benefit comes from the Owner-Occupied Tax Credit (for Class 3 property) and the LPV cap. If you qualify as owner-occupied and have not verified your Class 3 status with the Assessor, doing so is the closest thing to a homestead exemption available in Arizona.

How do I find comparable sales to support my Maricopa County appeal?

Use the Maricopa County Assessor's parcel search to find recent sales in your neighborhood, or pull data from Zillow, Redfin, or Realtor.com filtering for closed sales within 12 months and roughly one mile of your home. Match homes by square footage (within 15 to 20%), age, and construction type. Note the sale price per square foot for each comp and compare it to the implied price per square foot in your FCV.

Sources

1. Arizona State Legislature, Arizona Revised Statutes Title 42 (Taxation): Assessment ratio of 10% for Class 3 residential property (42-15003); Limited Property Value calculation and 5% annual cap (42-13302); clerical error correction process (42-16254); widows/widowers exemption (42-11111)
2. Arizona Department of Revenue, Property Tax Overview: Statutory primary property tax rate cap of $10 per $100 of assessed value and overview of Arizona's property tax structure
3. Tax Foundation, Property Tax basics and state-by-state comparison (2023): National median effective residential property tax rate approximately 1.1% of home value; state-by-state comparison data used in county comparison table
4. Maricopa County Assessor, Official Parcel Search Portal: Maricopa County Assessor handles approximately 1.6 million parcels; parcel search provides FCV, LPV, AV, and tax rate summary by AIN
5. Maricopa County Treasurer, Property Tax Information: 16% per year (1.33% per month) delinquency interest rate; two-installment due dates (October 1, March 1); tax lien certificate sale process and three-year redemption period
6. Maricopa County Assessor, Appeals and Petitions Information: Informal appeal deadline 60 days from NOV mailing; Board of Equalization formal petition deadline December 15; Form 82130 for informal appeal; evidence requirements for BOE hearing
7. Arizona Department of Revenue, Property Tax Division: Arizona DOR publishes assessment-to-sales ratio studies auditing county assessors; approximately 55,000 assessment appeals filed statewide in a recent year; disabled veterans exemption requirements
8. Maricopa County Assessor, Exemptions and Assistance Programs: Senior Property Valuation Protection income limits ($43,872 single / $54,840 two or more owners for tax year 2024); September 1 application deadline; Owner-Occupied Tax Credit for Class 3 property
9. Arizona Department of Revenue, Property Tax Forms (Form 82130): Official form used for informal assessment appeals filed with county assessors statewide including Maricopa County