Second Installment of Property Taxes Due, Late Penalties Begin April 1

Johnson County residents must pay second property tax installment by March 31 to avoid 1% monthly late fees.

Published on Feb. 22, 2026

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Johnson County property owners are reminded that the second installment of property and mobile home taxes is due March 1, 2026. Payments need to be delivered to the Treasurer's Office, paid online or postmarked by Tuesday, March 31, 2026, to avoid a 1% monthly penalty that will begin on Wednesday, April 1, 2026.

Why it matters

Property taxes are a major source of revenue for local governments, funding essential public services like schools, infrastructure, and public safety. Ensuring timely tax payments is crucial for maintaining these community resources.

The details

Payments can be made in person at the Johnson County Treasurer's Office, by mail to the PO Box 2420 address, or online through the Iowa Tax and Tags website. Residents who pay by mail must include the tax statement stub, and the U.S. Postal Service postmark is the only accepted proof of mailing date. The Treasurer's Office can also assist taxpayers with setting up online customer accounts to manage property tax bills.

  • The second installment of property taxes is due on March 1, 2026.
  • Payments must be postmarked or delivered by March 31, 2026 to avoid late fees.
  • Late payment penalties of 1% per month will begin on April 1, 2026.

The players

Johnson County Treasurer's Office

The local government office responsible for collecting property taxes in Johnson County, Iowa.

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What’s next

Residents who have questions about their property tax payments or need assistance can contact the Johnson County Treasurer's Office at 319-356-6087 or by email at [email protected].

The takeaway

Timely payment of property taxes is crucial for funding essential local government services in Johnson County. Residents should be aware of the March 31 deadline to avoid late payment penalties starting April 1.