The IRS and the Free File Alliance have launched their portal where taxpayers who earn $66,000 in annual income or less can select from a dozen name-brand income tax preparation services for federal, and in some cases state, taxes.

More than 51.1 million free federal tax returns have been filed in the 16 years of the partnership, according to the IRS. Returns can be filled out now, although they will not be submitted for processing until Jan. 29.

The IRS2Go app contains a link to the Free File Software Lookup Tool, or go to IRS.gov/freefile.

Free File Software Lookup Tool