While doing research for another project, I dug into how Wisconsin’s Use Value Assessment works and thought it might be helpful to share. This topic often comes up when landowners are considering selling farmland for residential or commercial development.

What is Use Value Assessment?

In Wisconsin, farmland is taxed based on its use value—what it produces—rather than its market value. This keeps property taxes much lower while the land remains in agricultural use.

What Happens When Land Use Changes

If land is converted from agricultural use to residential or commercial, two main things happen:

1. Conversion Charge (Penalty):

   • A one-time fee is assessed to recover part of the tax savings previously received.

   • The amount is based on county averages and the number of acres converted.

2. New Assessment:

   • Once the land is no longer farmed, it is taxed at full fair market value (residential or commercial), leading to higher ongoing property taxes.

How the Conversion Charge is Calculated

It depends on the acres converted:

• Less than 10 acres: 10% of the difference between fair market value and use value per acre.

• 10 to 30 acres: 7.5% of the difference.

• More than 30 acres: 5% of the difference.

(If the per-acre charge is under $25, or if converting to certain other land classes, no charge applies.)

Example (Illustration Only)

If Brown County farmland averages $9,000/acre (market) and $300/acre (use value):

• Difference = $8,700/acre

• Convert 5 acres (<10 acres): $870/acre × 5 = $4,350 conversion charge

• Those acres are then taxed at market value going forward.

Key Points for Sellers

• Simply changing zoning does not trigger the charge—it’s when the land is actually no longer farmed.

• Only the converted acres are subject to the charge.

• Renting the land for farming until development begins can delay both the charge and higher taxes.

Disclaimer: I am not an accountant or tax advisor. This information is for general understanding only. If you are considering selling land or converting agricultural property, it is best to consult your tax professional for guidance specific to your situation.

If you’d like to talk through how use value assessment might affect your sale or development plans, I’d be happy to connect you with resources while we explore the real estate side together.

By Adam Turriff with Resource One Realty, assisted by AI