1982 Winter SOI BulletinPDF Articles: Projections of return filings, 1982-1990PDF Individual income tax returns, 1980PDF Taxpayer usage of Form 1040 and Form 1040A, 1980PDF Unincorporated business activity, 1979PDF Windfall profit tax, first quarter, 1981PDF Preliminary Income and Tax Statistics From 1980 Individual Income Tax ReturnsPDF