<prompt> Human: Help me math! What percentage per pay period should I be contributing to my 401k to maximize my employer match? Pre-Tax 55kyear. Pay schedule is every two weeks. Max contribution is 18k. Here is my employers contribution formula:Matching Contributions for a pay period will be equal to 50 of the lesser of: i your 401k Contributions for that pay period; or ii 4 of your Compensation for that pay period.  <response>: 4 or more, it basically says theyll match up to a max of 4. 