If your Certificate of Error for valuation corrections has been approved and you are waiting for a refund, please check with the Cook County Treasurer’s Office for updates on timing of refunds. Check this alert banner for regular updates.
Holiday Observance Closure
In observance of the holiday our offices will be closed Monday, October 12, 2026. We will resume normal operations on Tuesday, October 13, 2026.
Property tax savings, known as exemptions appear as deductions on your second installment property tax bill. If you are missing an exemption, learn more how to file for a missing exemption, this process is a called a Certificate of Error.
The Assessor’s Office has been recognized with five 2026 Achievement Awards from the National Association of Counties (NACo). The awards honor innovative, effective county government programs that strengthen services for residents.
Sin Barreras: Entrepreneurship, Community, & Empowerment
Join us for an empowering conversation that will highlight the experiences and success stories of Latino business owners, exploring how entrepreneurship can create pathways to economic opportunity and generational wealth. Part of the “Racial Equity and Real Estate Conversations” series. Learn more by clicking the link below.