Business Week
http://www.businessweek.com/
A mix of free and subscriber-based articles. Perhaps the best business-related periodical around.

Wired
http://www.wired.com/
One of the first magazines to report on the Internet and its effects on the economy. A good source for technology-related economics news.

Christian Science Monitor
http://www.csmonitor.com/

Fortune
http://www.fortune.com/

Harvard Business Review
http://www.hbsp.harvard.edu/products/hbr/index.html

Inc.
http://www.inc.com/

Newsweek
http://www.msnbc.msn.com/id/3032542/

American Banker
http://www.americanbanker.com/

Forbes
http://www.forbes.com

Kiplinger's
http://www.kiplinger.com/magazine/

Institutional Investor
http://www.institutionalinvestor.com/

Money Magazine
http://money.cnn.com/

Worth Magazine
http://www.worth.com