Responsible Additions and Increases to Sustain Employee Health Benefits Act of 201 9 This bill modifies the tax exclusion for distributions from health flexible spending arrangements provided to employees under a cafeteria plan to (1) increase the annual limit on employee salary reduction contributions to $5,000, with an additional $500 for each additional employee dependent above two dependents that has not been taken into account by another person for the year; (2) revise the adjustment for inflation after 2020; and (3) allow a carryforward into the next year for unused amounts in such plans.