Under current law, the amount of the credit is tied to a person's income (the less you earn the more you get) and the cost of insurance where you live.
The GOP tax credits would be tied largely to age, with older people getting twice as much ($4,000 per year) as younger people ($2,000). But the Republican plan would also let insurers charge those older adults five times as much as younger adults, so even a credit twice as big might not make up the difference in the new, higher premiums.
The GOP credits also do not vary by location, so they would be worth more in places where health care and health insurance is less expensive.
The GOP credits do phase out gradually, starting with incomes above $75,000 for an individual and $150,000 for families.
The biggest changes the Republican bill would make are to the Medicaid program. Starting in 2020, it would roll back federal funding for the ACA's expansion that allowed states — if they so chose — to provide Medicaid coverage to all low-income individuals under 138 percent of the poverty level, rather than just the specific categories of poor people (children, pregnant women, elderly, disabled) who were previously eligible. Thirty-one states opted to pursue this ACA provision. People who are covered under the expansion would continue to be funded by the federal government after that, but states would no longer be allowed to enroll anyone under those expanded criteria. And an enrollee who loses eligibility for the expansion program could not re-enroll.
But the bill would go further as well, making changes to the underlying Medicaid program that House Energy and Commerce Committee Chairman Greg Walden (R-Ore.) described as "the biggest entitlement reform in the last 20 years."
Kaiser Health News is a national health policy news service that is part of the nonpartisan Henry J. Kaiser Family Foundation.