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Title:               Individual Income Tax Filing: All Returns
Series ID:           RTALFRM
Source:              U.S. Department of the Treasury. Internal Revenue Service
Release:             SOI Tax Stats - Historical Data Tables (Not a Press Release)
Seasonal Adjustment: Not Seasonally Adjusted
Frequency:           Annual
Units:               Number of Returns
Date Range:          1999-01-01 to 2016-01-01
Last Updated:        2018-12-19 1:31 PM CST
Notes:               As stated by the source, year-to-year comparability of the "all
                     returns" total is affected by changes in dollar income filing
                     thresholds, while year-to-year comparability of the number of returns
                     by type of tax form used is affected by changes in the specific filing
                     requirements, including adjustments for inflation, for each form. 
                     
                      In general, the filing of "short forms" (mostly Forms 1040A and
                     1040EZ) has been encouraged by IRS to simplify both taxpayer filing
                     requirements and IRS processing. Filing requirements for each of the
                     short forms have, therefore, been gradually liberalized to facilitate
                     their use. Increases in the number of short forms have mostly been at
                     the expense of "long form" 1040 usage (although increases in the
                     number of each of the short forms have often been at the expense of
                     one short form over another). While the number of 1040 (paper) returns
                     has, therefore, increased over the time period shown, the rate of
                     increase has been reduced by the use of the short forms, and, later,
                     by electronic filing options.
                     
                     For additional information about the return filing requirements, see
                     the annual reports, Statistics of Income-Individual Income Tax Returns
                     at https://www.irs.gov/uac/soi-tax-stats-historical-data-tables. 
                     
                     Forms 1040, 1040A, and 1040EZ include "standard" electronically-filed
                     ("ELF" or "e-file") returns, and Form 1040EZ returns filed
                     electronically by telephone ("TeleFile" for 1999-2004 only). Form
                     1040PC (computer-generated "paper") returns were not reclassified for
                     Statistics of Income for 1999; data for Forms 1040, 1040A, and 1040EZ
                     for this year are not comparable with preceding years (Form 1040PC did
                     not apply after 1999). For 2006, the total number of Form 1040EZ
                     returns includes 742,859 Form 1040EZ-T returns (the only year it
                     existed).

DATE            VALUE
1999-01-01  127075145
2000-01-01  129373500
2001-01-01  130255237
2002-01-01  130076443
2003-01-01  130423626
2004-01-01  132226042
2005-01-01  134372678
2006-01-01  138394754
2007-01-01  142978806
2008-01-01  142450569
2009-01-01  140494127
2010-01-01  142892051
2011-01-01  145370240
2012-01-01  144928472
2013-01-01  147351299
2014-01-01  148606578
2015-01-01  150493263
2016-01-01  150272154