More than 12,500 corporations e-filed 2005 tax returns in first year of new requirement.

• Position: Newsflash

The IRS reports that more than 12,500 of the nation's largest corporations have electronically filed their 2005 corporate tax returns.

Large corporate taxpayers with $50 million or more in assets that file at least 250 returns were required to e-file for the first time this year starting with their 2005 returns due Sept. 15.

The collaboration with taxpayers, practitioners and software developers enabled the IRS to develop a system to process large volumes of very complex returns, and develop rules to facilitate taxpayers' ability to comply with the mandate.

E-file for large corporations was used successfully by taxpayers in all types of industries. The IRS designed corporate e-file to be flexible enough...