(This post was originally published in May, 2013 and was updated in Nov 2016, Oct 2017, Aug 2018, Nov 2019, May 2020, June 2021, May 2022, and September 2023) A high-deductible health plan (HDHP) is just what the name implies. It is a health insurance plan that has a higher deductible than traditional insurance plans. An HDHP also has lower premiums than traditional coverage. In plain English, when you’re covered