Thank you for the detail. It must be a sub-contractor to the IRS. The front page of the Free File Fillable Forms User Guide, however, is 100% branded as an IRS

Thank you for the detail. It must be a sub-contractor to the IRS. The front page of the Free File Fillable Forms User Guide, however, is 100% branded as an IRS service, the online help is through the IRS web site[0], and the service is normally accessed initiallhy via the IRS web site, so you would only know about On-Line Taxes Inc. if you spent time reading, for example, the terms of service. For practical purposes, the taxpayer will see this as an IRS service, not a 3rd party. This is opposed to the Free File Alliance, where the taxpayer is only given a list of participating vendors and then is on their own. [0]https://www.irs.gov/e-file-providers/free-file-fillable-forms-help https://www.irs.gov/e-file-providers/free-file-fillable-form...