Introduction
Property taxes and escrow are two of the most misunderstood ongoing costs of homeownership, and they're closely linked. Most homeowners pay their property taxes through an escrow account managed by their lender, which means the details stay largely invisible until an escrow statement arrives and the monthly payment changes. Understanding how both work prevents surprises and helps you plan more accurately for the true cost of owning your home.
What Property Taxes Are
Property taxes are levied by local governments, primarily counties and municipalities, to fund public services: schools, roads, fire and police departments, parks, libraries, and other community infrastructure. They're calculated as a percentage of your property's assessed value and billed either annually or semi-annually depending on your jurisdiction.
The tax rate is called the mill rate or millage rate, expressed as dollars of tax per $1,000 of assessed value. A mill rate of 15 means you pay $15 per $1,000 of assessed value, or 1.5% of the assessed value annually. Actual rates vary enormously across the country: some counties charge less than 0.5% annually, while others charge 2.5% or more. On a $400,000 home, the difference between a 0.5% rate and a 2.5% rate is $800 versus $10,000 per year, or $67 versus $833 per month added to your housing cost.
Understanding the property tax rate in your specific area (not just the state average) is important when evaluating the true cost of a home before you buy. The listing price doesn't tell you the property tax; you need to look that up separately.
How Assessed Value Is Determined
Your property's assessed value is set by the local assessor's office and may or may not equal the market value of your home. Assessment methodologies vary by jurisdiction.
In some jurisdictions, properties are assessed at 100% of market value and the assessment is updated annually or whenever the property sells. In others, properties are assessed at a fraction of market value (60% or 80%, for example) and reassessments may be less frequent. Some states have caps on how much assessed value can increase per year, which means long-time homeowners may pay taxes on a value significantly below current market.
When you buy a home, the assessed value may change to reflect the purchase price, depending on your state's rules. In California, Proposition 13 means assessed value is reset to the purchase price at sale and can only increase by up to 2% per year thereafter. In most other states, the sale triggers a reassessment to something closer to current market value. This can cause a significant increase in your property tax bill compared to what the previous owner was paying, which is a number to research before closing rather than discover afterward.
How to Estimate Your Property Tax
When you're evaluating a home to buy, don't rely on the property tax figure shown in the listing. That number reflects what the current owner pays, which may be based on a lower assessed value (particularly if the home hasn't sold recently). After you buy, your assessment may increase.
To estimate your actual tax, look up the current mill rate for the municipality, find out whether your state reassesses at sale and how, and estimate what the assessed value is likely to be after the purchase. Your real estate agent or a call to the local assessor's office can clarify how reassessment works in your area. This estimate belongs in your monthly budget calculation before you make an offer, not after.
What Escrow Is and How It Works
An escrow account (also called an impound account) is a separate account managed by your mortgage servicer that holds funds collected to pay property taxes and homeowners insurance on your behalf. Most lenders require an escrow account, particularly for loans with less than 20% down.
How It Works Month to Month
Each month, a portion of your mortgage payment is deposited into your escrow account. The amount is calculated to ensure enough accumulates to cover your annual property tax and insurance bills when they come due. When those bills arrive, your servicer pays them directly from the escrow account. You don't have to remember to pay property taxes or insurance premiums: they're handled automatically.
The Escrow Cushion
Lenders typically maintain a cushion in your escrow account, usually two months of projected payments, as a buffer against unexpected increases in taxes or insurance. At closing, you paid an initial escrow deposit to seed the account. This is why your cash to close is higher than just the down payment and standard closing costs: the escrow setup requires funding upfront.
The Annual Escrow Analysis
Once a year, your mortgage servicer conducts an escrow analysis: a review of the account to determine whether the monthly collection amount is sufficient to cover the upcoming year's taxes and insurance, or whether there is a surplus or shortfall.
When You Get a Refund
If the analysis shows more money in escrow than needed for the upcoming year (a surplus above the allowed cushion), you receive a refund. This most commonly happens when your insurance premium decreases or your property tax decreases.
When Your Payment Increases
If the analysis shows a shortfall, your servicer will either ask you to pay the shortfall as a lump sum or spread it across your monthly payments for the coming year, which increases your monthly mortgage payment. This is one of the most common surprises for new homeowners: the monthly payment they budgeted for goes up in year two because the escrow analysis revealed a shortfall.
Property tax increases are the most common driver of escrow shortfalls. If you bought a home and the assessment was subsequently revised upward to reflect your purchase price, your tax bill may increase significantly in the first or second year, creating a shortfall that raises your monthly payment. Anticipating this possibility and setting aside some cash buffer helps avoid the surprise.
Can You Opt Out of Escrow?
Some lenders allow borrowers with sufficient equity (typically 20% or more) and strong payment history to waive the escrow requirement and manage their own tax and insurance payments. This is called a waiver of escrow or escrow waiver.
Managing your own escrow means setting aside the equivalent monthly amount in a dedicated savings account and making sure taxes and insurance are paid on time. The advantage is control and the ability to earn interest on the funds. The risk is that if you fail to pay property taxes, the jurisdiction can place a lien on the property, and if you fail to maintain insurance, your lender can force-place insurance on your behalf at a much higher cost.
For most homeowners, especially new ones, keeping escrow is the easier and lower-risk choice. Waiving it makes more sense for financially organized, experienced homeowners who have a clear reason to manage the payments themselves.
Property Tax Exemptions and Appeals
Homestead Exemption
Many states and localities offer a homestead exemption that reduces the assessed value of your primary residence for property tax purposes. The amount varies widely: some exemptions are modest ($5,000 or $10,000 off assessed value), while others are substantial. You typically need to apply for the homestead exemption by a deadline in your first year of ownership; it doesn't apply automatically. Check with your local assessor's office and apply as soon as you're eligible. Missing the deadline means waiting another full year.
Other Exemptions
Depending on your state and circumstances, you may qualify for additional property tax exemptions: senior citizen exemptions, veteran exemptions, disability exemptions, and others. Research what's available in your jurisdiction early in your homeownership. These exemptions can reduce your tax bill meaningfully and are often under-utilized simply because people don't know to apply.
Appealing Your Assessment
If you believe your property's assessed value is higher than it should be, you have the right to appeal. Assessment appeals are more common than most homeowners realize and succeed often enough to be worth pursuing when the assessment seems genuinely off.
To appeal, you typically need to file within a specified window after receiving your assessment notice (often 30 to 90 days). You'll need evidence that the assessed value exceeds market value: comparable recent sales of similar properties, an independent appraisal, or documentation of condition issues that reduce value. Your county assessor's office or a local real estate attorney can explain the process in your specific jurisdiction.
Final Thoughts
Property taxes are one of the largest ongoing costs of homeownership after the mortgage payment, and escrow is the mechanism that makes paying them automatic. Understanding both helps you budget accurately, anticipate when your payment might change, and take advantage of exemptions and appeals that can reduce what you owe.
The two most important actions for new homeowners: research whether your assessment will change after purchase (particularly if the previous owner's tax bill was based on a much lower assessed value) and apply for the homestead exemption as soon as you're eligible. Both can significantly affect what you actually pay, and both are things you need to act on proactively rather than waiting to be told about them.
Sources & Further Reading
For authoritative information on the topics covered in this article, consult these resources:
