total employee and employer contributions (including forfeitures) - the lesser of 100% of an employee’s compensation or $54,000 for 2017 ($53,000 for 2015 and 2016 not including "catch-up" elective deferrals of $6,000 in 2015 - 2017 for employees age 50 or older) (IRC section 415(c))
So the max is basically 200% match of the individual's contribution, which is maxed out at $18,000 for an individual under 50.
https://www.irs.gov/retirement-plans/401k-plans-deferrals-an...
total employee and employer contributions (including forfeitures) - the lesser of 100% of an employee’s compensation or $54,000 for 2017 ($53,000 for 2015 and 2016 not including "catch-up" elective deferrals of $6,000 in 2015 - 2017 for employees age 50 or older) (IRC section 415(c))
So the max is basically 200% match of the individual's contribution, which is maxed out at $18,000 for an individual under 50.