Official State of Iowa Website Here is how you know

Present Value Discount Table (535.3 Interest)

 

Treasury Constant 
Maturity Index
Plus 2%

Applicable Rate

Variable 2% Variable

Visit the Iowa Judicial Branch's website for the current rate (which periodically changes) and other related information
(Use the Iowa Judicial Branch website link to follow to News Releases to check on the "Notice of One-Year Treasury Constant Maturity Index for Calculation of Interest") 

Present Value Discount Table