Affordable Care Act 2018: Open enrollment begins today by admin | Nov 2, 2017 Open enrollment to purchase health insurance plans under the Affordable Care Act in 2018 begins today. This year’s enrollment period will only last six weeks, as the deadline to sign up for a new policy is Dec. 15. Powered by WPeMatico Share this:Tweet Related Submit a Comment Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of follow-up comments by email. Notify me of new posts by email.