How much is Obamacare per month? The average monthly premium for 2018 benchmark Obamacare plans is $411 before subsidies, according to the U.S. Department of Health and Human Services. Share Frequently Asked Questions - ACA - Obamacare FAQsHow Does Obamacare Work?Is Obamacare available to everyone?Is Obamacare free?What are the advantages of ACA?What are the requisites to get ACA or Obamacare?What exactly is Obamacare?What is the Affordable Care Act?