Self-Employment Tax


Use Schedule SE (Form 1040) to figure the tax due on net earnings from self-employment. The Social Security Administration uses the information from Schedule SE to figure your benefits under the social security program. This tax applies no matter how old you are and even if you are already getting social security or Medicare benefits.

Additional information.   See Pub. 225 or Pub. 334.

Future Developments

For the latest information about developments related to Schedule SE (Form 1040) and its instructions, such as legislation enacted after they were published, go to

What's New

Maximum income subject to social security tax.   For 2013, the maximum amount of self-employment income subject to social security tax is $113,700.

Additional Medicare Tax.   For tax years beginning after 2012, a 0.9% Additional Medicare Tax applies to your Medicare wages, Railroad Retirement Tax Act (RRTA) compensation, and self-employment income above a threshold amount. Use Form 8959, Additional Medicare Tax, to figure this tax. For more information, see Additional Medicare Tax, later.

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