The money borrowed in 2003 and 2004 to pay benefits to eligible claimants was subject to interest charges by the United States Treasury up to the date of repayment. Missouri Statutes state this charge is to be collected from employers who are covered under the Missouri Employment Security Law.

The Social Security Act prohibits the payment of interest charges by regular employer contributions to the Unemployment Compensation Fund. The Missouri Statutes (Section 288.128) provide for an annual assessment to be collected from Missouri employers based on their taxable payroll during the previous calendar year. All contributing Missouri employers (including those with a zero rate) are assessed.

Each employer's share of the interest is calculated by multiplying the employer's taxable wages from the previous calendar year times the federal interest assessment rate. The amount of the interest assessment is shown on Line 8 of the Second Quarter Contribution and Wage Report.

The 2007 federal assessment rate is .000170117. This calculates to $1.88 for each worker paid $11,000 or more in wages in calendar year 2006.