Social Security and Supplemental Security Income (SSI) benefits are adjusted annually to reflect any increase in the cost-of-living as measured by a change in the Consumer Price Index (CPI). For 2017, the cost-of-living adjustment is 0.3%. As a result, Social Security benefits will increase in 2017. In addition, the earnings base subject to Social Security taxes will also be rising in 2017. The table below shows the increase from 2016 to 2017.