Seems no wage growth under Bush means payroll taxes do not increase as much as was anticipated last year. Also someone told the actuaries that we would have a low interest climate for the next 10 years - so the Trust assets do not produce as much income.
Summary
http://www.ssa.gov/OACT/TRSUM/trsummary.htmlTable of Contents
http://www.ssa.gov/OACT/TR/TR05/trTOC.htmlList of Tables
http://www.ssa.gov/OACT/TR/TR05/trLOT.htmlList of Figures
http://www.ssa.gov/OACT/TR/TR05/trLOF.htmlGlossary
http://www.ssa.gov/OACT/TR/TR05/VI_glossary.htmlIndex
http://www.ssa.gov/OACT/TR/TR05/trIX.htmlChanges in starting values for the economic assumptions and in the transition to ultimate economic assumptions have a negative effect on the long-range actuarial balance. Higher than expected inflation in 2004 affected benefit payments more than taxable payroll. Taxable payroll for 2004 is close to that projected in last year's report. However, the cost-of-living adjustment (COLA) for December 2004 was estimated to be 1.1 percent in last year's report, but turned out to be 2.7 percent. This contributes toward higher benefit payments than projected in last year's report for at least the next 20 years. In addition, the projected real interest rate on trust fund investments during the first 10 years of the projection period is lower this year, consistent with recent data. This change also has a negative effect on the actuarial balance. The net effect of these economic changes is a reduction (worsening) in the long-range actuarial balance of about 0.06 percent of taxable payroll.