NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Changes in Taxsim Version 9.

Dec 24, 2011 (Daeyong Lee) Fix calculation of capital gains tax on section 1259 gains. November 4, 2011 (Martin Holmer) Add personal property tax to list of preferences for AMT November 2, 2011 (Ankur Patel) Fix 1979-1986 confusion of old and new taxable income (which affected tax calculation) present from September 5 - November 2 only. April 2011 (Martin Holmer) For families with 3 or more children, there is a 45% EITC credit rate for 2009+. For married taxpayers, allow EITC if at least one is under 65. March 2011 (Liu Tian) Fix unjustified addition of non-taxable transfers other than muni bond interest to gross income for the calculation of social security benefits in AGI Fix double counting of dividends in certain Massachussetts tax years. November (Susan Rohwedder) Fix notches in Connecticut, Virginia, Conn. Montana associated with social security benefits October 2010 (Steve Robinson) Dividends taxed as capital gains extended to 2011. September 2010 (tpc website) Fix 2010 personal exemption April 2010 Change v28 from duplicating fiitax to "Tax Before Credits" February 2010 (Jon Bakija) Maryland 1979 and 1983 - fix itemized deductions Ohio 1983-1988 - fix all taxpayers Oklahoma 1979-1989 - fix all taxpayers New York 1985-2007 - fix refundable credits for negative AGI Michigan 1977-2007 - same as NY Colorado 1977-1981 - allow deduction of federal tax Connecticut 1987,1988 - allow exclusion of long term gains Kentucky 1987-1989 - allow exclusion of long term gains Montana 1987-2992 - disallow exclusion of long term gains New Jersey 1977-1986 - disallow exclusion of long term gains January 2010 (Adam Looney) Fix child care credit. November 2009 (Hsueh-Hsiang Li) Fix capital gains tax for stata version only, web version ok. October (Zachary Liscow) fix reporting of FICA marginal rate September 2009 (Aaron Twait) Fix exemption for Minnesota seniors August 2009 (Karen Conway) Social Security Benefits in AGI for Iowa - all years. LA social security in taxable income has been corrected for the years up to 2002 WV deduction formula for people 65 years of aged or disabled has been reviewed for all years. July 2009 (Greg Leiserson) Fix zbr for 1963. Fix (eliminate) 20% maximum capital gains rate for 1979 and 1980. June 2009 (Inna Shapiro) Fix social security deduction for two earner couples in MA June 2009 (Katarzyna Dworakowski) Eliminate dependence of filing status (joint/separate) on presence of secondary wages, for states 4, 22, 47, 49. Allocate property income and deductions evenly, then try both ways, picking lower tax. For DC, smooth the property tax and rent tax credits. May 2009 (Inna Shapiro) Convert estimates of EIC breakpoints to actual amounts for 2008 and 2009. 		 
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