It depends. Some websites will connect you back to HealthCare.gov to complete an application for financial assistance. Other websites, designated as “full service partners” have features that let you apply for financial assistance on that site. If you have questions or concerns about information provided by these sites, you can check the Marketplace website, HealthCare.gov, to be sure. Check whether the private website you are using to apply for subsidies is an actual certified partner before sharing personal information. Tips for preventing fraud and scams in enrolling in the Marketplace are available here.