Can I contribute 100% of my salary to my 401k?

Can I contribute 100% of my salary to my 401k?

The maximum salary deferral amount that you can contribute in 2019 to a 401(k) is the lesser of 100% of pay or $19,000. However, some 401(k) plans may limit your contributions to a lesser amount, and in such cases, IRS rules may limit the contribution for highly compensated employees.