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Naperville Property Tax Calculator

Calculate your annual tax bill, see how it breaks down by taxing body, and project costs over 5 years, for both Will County and DuPage County portions of Naperville. If you are selling, the Naperville net proceeds calculator estimates what you would keep after payoff and selling costs.
Estimate your net proceeds
Estimated Annual Tax
$—
Effective rate: —%
Monthly Escrow
$—
Add to mortgage payment
Equalized Assessed Value
$—
After exemptions

Tax Levy Breakdown

DuPage County

Approximate rates per $100 EAV, based on 2024–2025 levies. Actual rates vary by exact parcel location.

Taxing BodyRate per $100% of BillAnnual $
Total—100%—

How You Compare

Naperville medians are listed separately by county because the two differ. Source: Ownwell, pulled August 2026, page last updated April 13, 2026, for Naperville in DuPage County and Naperville in Will County. These are Naperville medians within each county, not countywide medians. The 1.02% national figure is Ownwell's U.S. median effective rate from the same pull.

Your Estimate
$—
—% effective
Illinois Median
$7,578
~2.07% effective
National Median
$2,969
~1.02% effective
Naperville (DuPage)
$9,065
~2.05% effective
Naperville (Will)
$12,734
~2.35% effective
Your Estimate
$—
Naperville (DuPage)
$9,065
Naperville (Will)
$12,734
Illinois Median
$7,578
National Median
$2,969

5-Year Projection

Assuming 3.0% annual home appreciation and 3.0% levy increase.

YearHome ValueEAV (net)Annual TaxMonthlyYoY Change

How This Calculator Works

1
Market Value

Start with your purchase price as the estimated market value.

2
Assessed Value

Multiply market value by the assessment ratio (default 33.33% for IL residential).

3
EAV

Apply the county equalization factor, then subtract any exemptions (homestead, senior, etc.).

4
Tax Bill

Multiply EAV ÷ 100 × the combined tax rate from all overlapping taxing bodies.

The county rates quoted on this page are realized median effective rates, computed by Ownwell across all Naperville parcels in each county after exemptions and appeals. This calculator does something different: it estimates one specific parcel from the itemized levy rates above and only the exemptions you check, so a Will County parcel here typically lands near 2.1% to 2.2% rather than the published 2.35% median. The two are different measures and are not interchangeable. This calculator provides estimates only. Actual tax bills depend on your assessor's determination, final levy amounts, and equalization factors set each spring. Always verify with your county assessor. Sources: Ownwell, NCTV17, Illinois Policy Institute.

Naperville taxes: FAQ

Are the proceeds from selling my house taxable?

Sometimes. Many homeowners who sell a primary residence qualify for a capital gains exclusion and owe little or nothing, but it depends on your gain, how long you owned the home, and your filing situation. Confirm your specifics with a tax professional rather than a general rule.

Does Naperville have high property taxes?

Relative to national averages, yes. Naperville’s effective property-tax rate runs above the national median, which is common for DuPage and Will County suburbs that fund strong schools. Your exact bill depends on your home’s assessed value, your taxing bodies, and any exemptions you claim.

What property-tax exemptions can a Naperville homeowner claim?

Most owner-occupants qualify for the general homestead exemption, which lowers taxable value. Seniors may add the senior homestead exemption and, if income-eligible, the senior assessment freeze. Eligibility and amounts are set by Illinois and your county, so verify current details with the township assessor.

Ready to see your real number?

Your net proceeds depend on your price and your costs, so the most accurate way to know is to run them together for your home. To put numbers to it now, use the Naperville net proceeds calculator. Request your home valuation from The Dan Firks Team to refine this estimate, or reach out to talk through your numbers, with no obligation. These figures are estimates, not a promise of price or net, because every home and every market is different.
Request your home valuation
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Have questions or need assistance about Naperville? Get in touch with The Dan Firks Team, your trusted guide to all things Naperville and real estate. At Naperville.com, we're dedicated to serving the community.

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