Iowa Code section 441.16.23 establishes an assessment expense fund which is used to pay expenses accrued in the assessment of property. Property taxes are levied for this fund separately from other property taxes. The county conference board certifies this levy to the County Auditor. The value of this levy is determined as follows:

• If the total valuation of a jurisdiction does not exceed $92,600,000, the maximum levy is 40½ cents per $1,000 of assessed value.
• If the total valuation is between $92,600,000 and $111,120,000, the levy cannot exceed 33¼ cents per $1,000 of assessed value.
• If the valuation is greater than $111,120,000, the levy can be no greater than 27 cents per $1,000 of assessed value.

Most real property is assessed either by a county or city assessor. Since Clayton County does not have a city with a population greater than 10,000, there are no city assessors here; all property in Clayton County is assessed by the County Assessor.