There is a great summary at Pragmatic Capitalism on the end of year Fiscal Cliff. There are lots of tax code and policy expirations at the end of the year. They will have an impact on the markets and as we get closer you will see more and more articles and whack-a-mole pundits spouting off about the cliff in the months and days leading up to the end of the year. The post is here http://pragcap.com/8-events-leading-to-the-fiscal-cliff