Mandatory Retirement Contribution Rates
TIAA
Contributions are based on budgeted salary and deducted on a pre-tax basis.
1-5 Years of Service
Employee Contributes: 3 1/3% of the first $4800 and 5% of the remainder up to the IRS limit
ISU Contributes: 6 2/3% of the first $4800 and 10% of the remainder up the IRS limit
6+ Years of Service
Employee contributes: 5% of budgeted salary up to the IRS limit
ISU Contributes: 10% of budgeted salary up to the IRS limit
Contribution amounts are subject to change by Iowa State University with approval by the State Board of Regents.
IPERS
Regular employee contributes: 6.29% of budgeted salary effective July 1, 2021
ISU Contributes: 9.44% of budgeted salary effective July 1, 2021
Protection Occupation employee contributes: 6.21% of budgeted salary effective July 1, 2021
ISU Contributes: 9.31% of budgeted salary effective July 1, 2021
Contribution amounts are subject to change annually on July 1, by the Iowa Legislature. Any change may not exceed a 1% increase or decrease.
