Electronic filing (also referred to as E-File and E-filing) is the process of submitting tax returns over the internet via properly certified tax software. The E-File system has made tax preparation significantly easier, and the IRS notifies software users within 24-48 hours if they accepted or rejected the tax return. E-filing is not available year-round but rather begins sometime in January and ends sometime in October; the IRS determines when exactly e-filing begins and ends each year, and states follow whatever dates the IRS sets. An electronic return originator (ERO) is the individual who originates the electronic submission of the tax return. To file a return electronically, the individual needs to be an Authorized IRS e-File Provider.