IRS.gov the offical site from the US government.

Cornell University law School U.S. Code: Title 26 - INTERNAL REVENUE CODE.

Arizona Corporate Commission offical site from the Arizona government.

Arizona Department of Revenue offical site from the Arizona government.

Social Security offical site from the US government.

The Electronic Federal Tax Payment SystemŽ tax payment service is provided free by the U.S. Department of the Treasury.

Get up-to-date refund information using Where's My Refund? from the US government.

Department of Commerce offical site from the US government.

Publications.USA.gov is operated by the Federal Citizen Information Center (FCIC), U.S. General Services Administration.

As the U.S. government's official web portal, USA.gov makes it easy for the public to get U.S. government information and services on the web.

The U.S. Small Business Administration (SBA) was created in 1953 as an independent agency of the federal government to aid, counsel, assist and protect the interests of small business concerns, to preserve free competitive enterprise and to maintain and strengthen the overall economy of our nation.