Statistics of Income Projects and Contacts PDF (PDF, revised March 2014) This document contains a complete listing of Projects and Contacts for SOI’s current and future releases. Here you will find the project name and primary contact, program content, and projected date for public release. Please contact the Statistical Information Service with questions. The IRS Statistics of Income Division (SOI) produces data compiled from samples of tax and information returns filed with the IRS. A variety of Federal agencies, academics, researchers, and the general public use the information we gather, analyze, and publish to study tax policy, project tax revenues, and to estimate the overall impact and their effects on tax law changes.