Background: I'm classed as a Highly-Compensated Employee (HCE) and my goal is to max out my 401k and the company match. They don't do true-ups, so I must contribute at least 6% every pay period to receive the full match. At the beginning of the year, I calculated that 12% would put me over the 18,000 threshold for 2016...so I set it at 11%. My plan was to up it as necessary mid-year to reach 18K. I backloaded it thinking it'd be easier to absorb once SSI taxes stopped being paid (shame! shame!)
Problem: I recently realized that due to non-discrimination tests, HCE 401K contribution percentages are capped at 12%. Because I waited too long to increase my contribution, this will result in my only contributing 17,200 to my 401K. My understanding is that non-discrimination is based on the average annual contribution percentage...so because I contributed < 12% YTD, I should be able to contribute more for the remainder of the year so long as my average is still 12%. Am I wrong? or overlooking something?