The Bipartisan Budget Act of 2015 made some changes to Social Security's laws about filing for retirement and spousal benefits. This publication provides instructions for completing the CalPERS Service.Retirement Election Application and other forms you may need to complete. Complete all fields for each beneficiary you name. You can change this beneficiary designation at any time. You do not need to be Social. Security age to collect your CalPERS pension . The amount of your monthly payments depends on your years of service under ACERA employers, your average salary, and your age at retirement. At the end of each year, we'll mail you a Social Security. Benefit Statement (Form SSA-1099) that shows the amount of benefits you received.