Health Care Access for Small Businesses Act of 2003

Health Care Access for Small Business Act of 2003 - Amends the Social Security Act to add a new title XXII (Providing for the Uninsured) to direct the Secretary of Health and Human Services to promulgate regulations for the certification of three-share programs for purposes of offering a refundable tax credit to small businesses who participate in such programs where: (1) not more than 30 percent of the cost of the monthly premium for health coverage (including prescription drug benefits) is paid by the qualified employee who lacks access to health coverage and desires coverage; and (2) at least 70 percent of such cost is paid by the qualified employer of such a qualified employee.

Authorizes the Administrator to award startup grants to eligible entities to establish three-share programs for certification.

Amends the Internal Revenue Code to provide for a refundable tax credit in the case of an eligible employer in an amount equal to 40 percent of the costs of a three-share program resulting from the participation of the taxpayer in such program during the taxable year.