The newly insured will largely be young people, low-income single adults who currently do not qualify for Medicaid, small business owners, the self-employed, and others who do not have access to employer-sponsored health insurance. About half of them will be covered by Medicaid, which will be expanded to include anyone with an income up to 133% of the federal poverty level (FPL). In 2009 (valid until 31 March 2010), the FPL for a single person was $10 830 and for a family of 4 was $22 050. For a single person, 133% of the FPL would be $14 403, and for a family of 4, it would be $29 326 (7). Initially, the federal government will pick up most of the tab for the Medicaid expansion, but eventually the states will assume a greater share. The other half will get coverage from private insurance plans offered through state health exchanges (state-run group purchasing pools), with sliding-scale tax credits for people with incomes up to 400% of the FPL. Small businesses will be eligible to buy coverage through their state's exchange. Starting in 2010, small businesses with fewer than 25 employees that pay at least 50% of the health care premiums for their employees will qualify for a tax credit up to 35% of their premiums. The PPACA will also require insurers to cover people up to the age of 26 under their parents' policies and ban the exclusion of children with preexisting conditions.