Cook County Treasurer Maria Pappas will mail First Installment property tax bills by March 2, with payment due on April 1, 2026. For many homeowners, this is a routine obligation, but it is worth understanding exactly what this installment represents, and just as importantly, what it does not.
The First Installment is calculated as 55% of last year’s total tax bill. It is not based on a new assessment, and it does not yet reflect updated exemptions. Those adjustments are applied later, when the Second Installment is issued.
In other words, this payment is essentially a continuation of last year’s tax structure, not a reflection of current market value or recent reassessments.
Payment must be made in full by 11:59 p.m. on April 1. After that point, a statutory penalty of 0.75% per month begins to accrue. While that may not sound significant at first glance, over time it compounds in a way that is entirely avoidable with a bit of planning.
Homeowners may pay online at cookcountytreasurer.com, and there is no fee when paying directly from a bank account.
If You Escrow Through Your Lender
Before submitting payment, confirm whether your mortgage servicer handles your property taxes on your behalf. If your loan includes an escrow account, your lender will typically pay this installment directly.
Each year, I see homeowners make the understandable mistake of paying the bill themselves without confirming escrow status, which can result in unnecessary complications and refunds that take time to process. A brief check with your lender prevents that entirely.
A Brief Word on Appeals
Although this installment is not connected to the appeals process, it does serve as a useful reminder to review your current assessed value and consider whether it accurately reflects your property relative to comparable homes.
Appeals are based on valuation data - specifically, whether your assessment aligns with similar properties in your area - and they are filed during limited township-specific windows. Not every property benefits from filing annually, but in certain situations, the savings can be meaningful.
Why This Matters Beyond the Bill
Property taxes influence more than a line item in your annual budget. They factor into buyer affordability calculations, affect underwriting decisions, and ultimately, when you sell, influence how a property competes within its price category.
For homeowners considering a move within the next year or two, understanding your tax position early allows you to make strategic rather than reactive decisions.
If You Would Like to Review Your Position
If you would like to review your property’s current market value, evaluate how your assessed value compares to recent sales, or simply understand how the appeals process works in practical terms, I am happy to help. Just send me an email or text!
