For the second year, the IRS had delayed the start of the tax season. Processing for 2013 tax returns should begin on Febuary 4th due to the government shut down in October.
The IRS has been working to add processing safeguards against refund fraud and Idenity theft. Unfortunately, the shutdown took their debugging time and the IRS needs more time to makes sure the system is working properly. This means that taxpayers will be seeing delays in their refunds from not only the delayed season start but from extra fraud scrutiny. There is also the possibility of further delays if Congess doesn't do something about funding.
Despite the delay in the start of the tax season, taxpayers won't get extra time to file their returns. April 15th is still the due date for most people and extensions will be due on October 15th.