Summary: Thanks to inflation, workers will be able to save an additional $500 in their tax-sheltered 401(k) and Individual Retirement Accounts next year, the Internal Revenue Service announced Thursday. Employees who participate in 401(k), 403(b), most 457 plans, and the federal government’s Thrift Savings Plan can contribute a maximum of $19,000 in 2019, up from $18,500 this year. Before that, it was stuck at $18,000 for three years.