How Do Property Taxes Work for Homeowners in Maricopa County, AZ?

Every year, the Maricopa County Assessor's Office estimates a value for your property and mails you a Notice of Value, usually in February, for taxes that will be billed about a year and a half later. Two different values show up on that notice, and understanding the difference matters more than you'd think. Full Cash Value vs. Limited Property Value Your Full Cash Value (FCV) is the assessor's estimate of what your home would sell for on the open market.

It moves with the market, sometimes a lot in a single year. Your Limited Property Value (LPV) is the number that actually gets taxed for most homeowners. Arizona law caps how fast the LPV can rise, generally by no more than 5% per year, and it can never go higher than your FCV. So even in a year where home values jump 15% or 20%, your taxable value is protected from that full swing.

It just means your LPV tends to creep upward steadily rather than spiking, and it can keep climbing a little even in years when the market cools, as long as it's still below your FCV. This is why two neighbors with nearly identical homes can have noticeably different tax bills. If one has owned their home for 12 years and the other just bought last year, their LPVs are built on different histories, even if their homes are worth the same today.

The 10% Assessment Ratio Once your LPV is set, the county doesn't tax the whole thing. Owner-occupied primary residences get an assessment ratio of 10%. So a home with an LPV of $400,000 has an assessed value of $40,000. That assessed value, not your LPV and not your FCV, is what your local tax rates get applied to. Investment and rental properties are assessed differently, which is one more reason it's worth confirming your primary residence classification is correctly on file if you live in the home you own.

Primary and Secondary Tax Rates Your final bill comes from applying primary tax rates (funding things like schools and county government) and secondary tax rates (funding voter-approved bonds, overrides, and special districts like fire or library districts) to your assessed value. These rates vary by city and by which specific school and special districts your property sits in, which is why a home in Gilbert and a similarly valued home in Surprise can carry different tax bills.

Across Maricopa County, effective property tax rates for the 2025, 2026 tax year generally run somewhere between roughly 0.6% and 1.3% of a home's market value, depending on where it's located and which districts serve it. If you want the exact rate for a specific address, the Maricopa County Treasurer's website will show the actual breakdown for that parcel.

Maricopa County splits your annual property tax bill into two installments: First half: due October 1, becomes delinquent after 5:00 p.m. on November 1 Second half: due March 1 of the following year, becomes delinquent after 5:00 p.m. on May 1 You can also pay the full year in one payment by December 31 if you'd rather not split it. Tax bills typically go out in September, so keep an eye out for that notice, whether it comes by mail or through your lender if your taxes are escrowed.

Delinquent property taxes in Arizona accrue interest at 16% per year, prorated monthly, starting the day after the delinquency deadline. That adds up fast, and unpaid property taxes are one of the few debts that can eventually lead to a tax lien sale on your home. If you're ever unable to pay on time, it's worth contacting the Maricopa County Treasurer's Office directly rather than letting it sit.

They deal with this regularly and can walk you through your options.

Most homeowners with a mortgage don't pay the county directly. Instead, a portion of each monthly mortgage payment goes into an escrow account, and your lender pays the county on your behalf when the bill comes due. This is convenient, but it comes with a catch worth understanding: your escrow payment is based on an estimate of your upcoming tax bill.

When your LPV rises and your actual bill comes in higher than what was estimated, your lender covers the shortage and then raises your monthly payment to rebuild the escrow cushion and cover the new, higher bill going forward. This is one of the most common reasons a homeowner's mortgage payment jumps even though their interest rate never changed.

It's not a mistake or a rate increase, it's the tax portion catching up to reality.

A few patterns show up again and again: Assuming the market value on Zillow is what gets taxed. Your FCV and LPV are assessor-calculated numbers, not third-party estimates, and the LPV is usually meaningfully lower than current market value, especially if you've owned the home a while. Ignoring the Notice of Value. It's easy to toss this piece of mail, but it's your once-a-year window to catch an assessment error or file an appeal before the deadline passes.

Not checking primary residence classification after a refinance or title change. If your homestead or primary residence status isn't correctly reflected with the assessor, you could be missing out on the more favorable owner-occupied treatment. Being surprised by the escrow adjustment. If you know your LPV went up significantly this year, expect your escrow payment to follow within a year or so.

Planning for it ahead of time beats being caught off guard.

If you believe your Full Cash Value is higher than what your home could actually sell for, you have the right to appeal. You generally have 60 days from the date the Assessor mails your Notice of Value to file a Petition for Review of Real Property Valuation. If you're not satisfied with the Assessor's decision, you can escalate to the Maricopa County State Board of Equalization within a set window after that decision, typically around 25 days.

Good evidence for an appeal usually includes recent comparable sales in your immediate area, documentation of any condition issues that would reasonably lower value, or an independent appraisal. This is exactly the kind of local comparable data a REALTOR® can help pull together, since we have access to closed sales data that isn't always visible to the public.

Scenario 1: The first-time buyer surprised by a payment increase. A young family buys their first home in Avondale in the spring. Their initial mortgage payment is based on the seller's old, lower LPV and tax bill. A year and a half later, once the county recalculates the LPV based on the new purchase and market conditions, their tax bill rises, and so does their monthly escrow payment.

Nothing went wrong here, it's simply the normal lag between when a home changes hands and when its taxable value catches up. Buyers who know to expect this aren't caught off guard by it. Scenario 2: The higher-value homeowner who appeals successfully. A homeowner in Paradise Valley with a home valued in the $900,000s notices their Full Cash Value jumped sharply on this year's Notice of Value, well above what comparable homes in their neighborhood have actually sold for.

They gather three recent, truly comparable sales and file a Petition for Review within the 60-day window. The Assessor's Office reviews the evidence and adjusts the value down, which keeps their LPV growth, and their future tax bill, more in line with reality.

Do property taxes go up every year in Maricopa County? Not necessarily by the same amount every year, but your Limited Property Value can rise up to 5% annually as long as it stays below your Full Cash Value, so most homeowners see gradual increases over time rather than sudden jumps, aside from the adjustment that often follows a sale. Why did my tax bill go up more than 5% this year?

The 5% cap applies to the LPV itself, but your final bill also depends on tax rates set by your city, school district, and any special districts, and those rates can change independently. A rate increase combined with LPV growth can push your total bill up by more than 5%. Is there any relief for seniors or homeowners on a fixed income? Arizona offers certain property tax relief programs, including options tied to income limits for qualifying seniors, and exemptions for some disabled homeowners and veterans.

Eligibility rules and dollar limits change, so check current details directly with the Maricopa County Assessor's Office rather than relying on older information. Can I pay my property taxes online? Yes, the Maricopa County Treasurer's Office accepts online payments, along with mail and in-person options. What's the difference between the Assessor and the Treasurer?

The Assessor's Office determines your property's value. The Treasurer's Office bills and collects the actual tax payment. If you have a question about your valuation, that's the Assessor; if you have a question about your bill or payment, that's the Treasurer. Do new construction homes get taxed differently in the first year? New construction is added to the tax roll once it's substantially complete, which sometimes means a partial-year assessment.

It's common for a new build's first full tax bill to look different from what a buyer initially budgeted for, so it's worth asking your lender or agent to walk through the timeline before you close.

Property taxes are one of those details that quietly affect your monthly budget long after closing day, and it's easy to overlook until an escrow adjustment shows up in the mail. Stephanie Pondevie is a bilingual REALTOR® in Maricopa County, AZ, helping buyers and sellers navigate exactly this kind of detail, whether you're purchasing your first home, moving into a higher-value property, or trying to understand what your current assessment really means for your bottom line.

If you'd like a second set of eyes on a Notice of Value, want to understand what a specific property's tax history looks like before you make an offer, or just have questions about how this all fits into your homebuying or selling plans, reach out anytime at yourhomecomesfirst.com. Stephanie Pondevie is a licensed real estate agent with eXp Realty, holding ABR® and SRS® designations and serving Chandler, Gilbert, Scottsdale and the greater Maricopa County area.

With 12+ years of experience and over 100 homes sold, she specializes in move-up buyers and sellers who need the sale and the purchase coordinated as one plan. She speaks English, Spanish and French.