From Social Security: Social Security Announces 2.8 Percent Benefit Increase for 2019
Social Security and Supplemental Security Income (SSI) benefits for more than 67 million Americans will increase 2.8 percent in 2019, the Social Security Administration announced today.
The 2.8 percent cost-of-living adjustment (COLA) will begin with benefits payable to more than 62 million Social Security beneficiaries in January 2019. Increased payments to more than 8 million SSI beneficiaries will begin on December 31, 2018. (Note: some people receive both Social Security and SSI benefits). The Social Security Act ties the annual COLA to the increase in the Consumer Price Index as determined by the Department of Labor’s Bureau of Labor Statistics.
Some other adjustments that take effect in January of each year are based on the increase in average wages. Based on that increase, the maximum amount of earnings subject to the Social Security tax (taxable maximum) will increase to $132,900 from $128,400.
Currently CPI-W is the index that is used to calculate the Cost-Of-Living Adjustments (COLA). Here is a discussion from Social Security on the current calculation (2.8% increase) and a list of previous Cost-of-Living Adjustments.
The contribution and benefit base will be $132,900 in 2019.
The National Average Wage Index increased to $50,321.89 in 2017, up 3.5% from $48,642.15 in 2016 (used to calculate contribution base).