The following pages and forms give helpful tax information for retirees and seniors. To apply for Medicare online, visit the Social Security Administration website, agree to the terms of service and fill out the application.Our Utah retirement tax friendliness calculator can help you estimate your tax burden in retirement using your Social Security, 401(k) and IRA income. UT's Aging Waiver is for elderly Utah residents aged 65 and older who also meet the criteria outlined below. You can stretch your retirement savings further in the state than anywhere else. 3. ☐ Talk with Your Retirement Plan Administrator to finalize your retirement financial plan and set up retirement plan withdrawals so you won't go without income.