The AWI is used to index an individual's earnings through age 60 in the benefit calculation formula, and the COLA is used to increase benefits annually. The COLA shown for a year is effective for December of that year, but is payable in January of the following year.
a Average increase.
COLAs & AWI increases under
the intermediate assumptions
of the 2012 Trustees ReportCalendar year COLA
(percent)Increase in
AWI (percent)2011 3.6 3.2 2012 1.8 3.8 2013 1.9 4.1 2014 2.1 4.5 2015 2.1 4.7 2016 2.2 4.8 2017 2.5 5.0 2018 2.6 4.8 2019 2.8 4.2 2020 2.8 4.1 2021 and later 2.8 3.9 a Last reviewed or modified 04/23/2012