From the IRS web page :
The Affordable Care Act was enacted on March 23, 2010. It contains some tax provisions that take effect this year and more that will be implemented during the next several years. The following is a list of provisions now in effect; additional information will be added to this page as it becomes available.
Medicare Part D Coverage Gap “donut hole” Rebate
The Affordable Care Act provides a one-time $250 rebate in 2010 to assist Medicare Part D recipients who have reached their Medicare drug plan’s coverage gap. This payment is not taxable. This payment is not made by the IRS. More information can be found at www.medicare.gov.
Small Business Health Care Tax Credit
This new credit helps small businesses and small tax-exempt organizations afford the cost of covering their employees and is specifically targeted for those with low- and moderate-income workers. The credit is designed to encourage small employers to offer health insurance coverage for the first time or maintain coverage they already have. In general, the credit is available to small employers that pay at least half the cost of single coverage for their employees. Learn more by browsing our page on the Small Business Health Care Tax Credit for Small Employers.
Employer-Provided Health Coverage — Not Taxable
Starting in tax year 2011, the Affordable Care Act requires employers to report the value of the health insurance coverage they provide employees on each employee’s annual Form W-2. This reporting is for informational purposes only, to show employees the value of their health care benefits so they can be more informed consumers. The amount reported does not affect tax liability, as the value of the employer contribution to health coverage continues to be excludible from an employee’s income and it is not taxable.
Health Coverage for Older Children
Health coverage for an employee’s children under 27 years of age is now generally tax-free to the employee. This expanded health care tax benefit applies to various work place and retiree health plans. These changes immediately allow employers with cafeteria plans –– plans that allow employees to choose from a menu of tax-free benefit options and cash or taxable benefits –– to permit employees to begin making pre-tax contributions to pay for this expanded benefit. This also applies to self-employed individuals who qualify for the self-employed health insurance deduction on their federal income tax return. Learn more by reading our news release or this notice.