"While the operation of these Marketplaces is overseen by the Department of Health and Human Services (HHS), the IRS has the limited role of providing Marketplaces with data and computational services for use in their determinations about eligibility for financial assistance.... The IRS, through this computational service, provides the Marketplace with a single figure: the maximum advance premium tax credit for which the applicant may be eligible based on those data inputs.... During the 2015 open enrollment period, the IRS processed more than 25 million requests for federal tax return data and more than 17 million computational requests, with an average IRS response time of less than five seconds."  MORE >>