Over 62 million Americans count on Social Security as a major source of their income, including more than 43 million retired workers. The program is critical to financial security for these Americans and that makes annual changes to the program must-know news. Read on to learn about the biggest changes to Social Security next year.In 2018 Social Security checks increased 2% because of Social Security's annual inflation adjustment, and in 2019 recipients will see their Social Security increase by 2.8% -- the biggest increase awarded since 2011 and paid since 2012.