This should not be taken as legal or tax advice.

Eligible self-employed individuals can use the self-employed health insurance deduction to reduce their Social Security tax in addition to their income tax liability for the 2010 tax year.

Health Insurance Deduction Reduces Self Employment Tax  In 2010, eligible self-employed individuals can use the self-employed health insurance deduction to reduce their social security self-employment tax liability in addition to their income tax liability. As in the past, eligible taxpayers claim this deduction on Form 1040 Line 29. But in 2010, eligible taxpayers can also enter this amount on Schedule SE Line 3, thus reducing net earnings from self-employment subject to the 15.3 percent social security self-employment tax.

Premiums paid for health insurance covering the taxpayer, spouse and dependents generally qualify for this deduction. Premiums paid for coverage of an adult child under age 27 at the end of the year, for the time period beginning on or after March 30, 2010, also qualify for this deduction, even if the child is not the taxpayer’s dependent.

As before, the insurance plan must be set up under the taxpayer’s business, and the taxpayer cannot be eligible to participate in an employer-sponsored health plan. Details, including a worksheet, are in the instructions to Form 1040.