Supply-side
Cost
Cost
Graph  Notes
-----  -----
  1st  * Lower government consumption after 2013
       ^ Higher taxes after 2013
  2nd  EGTRRA consists of extension of expiring EGTRRA provisions and
       acceleration of individual income taxes

  CBO'S ESTIMATES, FROM SUPPLY-SIDE MODELS, OF THE CUMULATIVE BUDGETARY
      IMPACT OF THE PRESIDENT'S PROPOSALS (in billions of dollars)

Budgetary Cost with Macroeconomic Feedbacks      2004-08  2009-13  2004-13
--------------------------------------------------------------------------
Conventional Estimate of President's Proposals~     -802    -1908    -2710
Textbook Growth Model..........................     -847    -2126    -2973
Closed-Economy Life-Cycle Growth Model
  Lower government consumption after 2013......     -846    -2194    -3040
  Higher taxes after 2013......................     -745    -1817    -2562
Open-Economy Life-Cycle Growth Model
  Lower government consumption after 2013......     -880    -2013    -2893
  Higher taxes after 2013......................     -753    -1760    -2513
Infinite-Horizon Growth Model
  Lower government consumption after 2013......     -775    -1989    -2764
  Higher taxes after 2013......................     -680    -1587    -2267

Budgetary Savings or Cost(-) as a
Percentage of the Conventional Estimate^         2004-08  2009-13  2004-13
--------------------------------------------------------------------------
Textbook Growth Model..........................       -6      -11      -10
Closed-Economy Life-Cycle Growth Model
  Lower government consumption after 2013......       -6      -15      -12
  Higher taxes after 2013......................        7        5        5
Open-Economy Life-Cycle Growth Model
  Lower government consumption after 2013......      -10       -5       -7
  Higher taxes after 2013......................        6        8        7
Infinite-Horizon Growth Model
  Lower government consumption after 2013......        3       -4       -2
  Higher taxes after 2013......................       15       17       16

~ CBO's estimate of the budgetary impact assuming no macroeconomic feedbacks.
^ A negative number means that the macroeconomic feedbacks are estimated to
   increase the budgetary cost; a positive number, that they are estimated to
   reduce it (or provide savings).

Notes: The 'textbook' growth model is an enhanced version of the model
developed by Robert Solow, a pioneer of growth-accounting theory. For a
detailed description of the model, see Congressional Budget Office,
CBO's Method for Estimating Potential Output: An Update (August 2001).
The life-cycle growth model, developed by CBO, is described in Shinichi
Nishiyama and Kent Smetters, 'Consumption Taxes and Economic Efficiency in a
Stochastic OLG Economy,' Technical Paper 2002-6 (December 2002), available
from CBO's Macroeconomic Analysis Division or at www.cbo.gov/tech.cfm.
The infinite-horizon growth model is an enhanced version of a model first
developed by Frank Ramsey; see Robert J. Barro and Xavier-I-Martin,
Economic Growth (New York: McGraw-Hill, 1995).

The three models reflect a wide range of assumptions about the extent to
which people are forward-looking in their behavior: in the textbook model,
their foresight is the least, while in the infinite-horizon model, it is
perfect and extends infinitely to include a full consideration of effects
on descendants.

In models with forward-looking behavior, CBO had to make assumptions about
how the President's budget would be financed after 2013.  CBO chose two
alternatives - cutting government consumption or raising taxes.

===========================================================================================================

                     CBO'S ESTIMATE OF THE COST OF THE PRESIDENT'S BUDGETARY PROPOSALS
                                         (In billions of dollars)                             Total, Total,
                                                                                              2004-  2004-
President's Revenue Proposals          2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013   2008   2013
-----------------------------------------------------------------------------------------------------------
Extend expiring EGTRRA provisions         0    1    1    1    1    2    2    2  134  224  234      5    602
Provide dividend exclusion                8   23   26   29   32   36   39   44   48   52   59    147    388
Accelerate individual income tax cuts    25   78   51   27   19   15   12    8    1    0    0    190    211
Extend experimentation credit             0    1    3    4    5    6    7    7    7    8    8     19     56
Increase AMT exemption                    1    9   14   13    0    0    0    0    0    0    0     36     36
Increase expensing for small business     1    3    3    3    3    3    3    2    2    2    2     15     27
Deduction for long-term care insurance    0    0    0    1    1    2    2    2    3    3    3      4     18
Charitable deduction for nonitemizers     0    1    1    1    1    1    2    2    2    2    2      7     15
Affordable 1-family housing credit        0    0    0    0    1    1    2    2    3    3    3      2     15
Refundable health insurance credit        0    0    1    1    1    1    1    1    2    2    2      5     13
Expand tax-free savings                  -2   -3   -3   -3   -1    0    2    3    4    4    5    -10      7
Extend AMT of nonref. personal credits    0    0    0    0    0    0    0    0    0    0    0      1      1
Other proposals a                         1    5    7    7    7    7    7    7    7    6    6     32     66
--------------------------------------  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  -----  -----
Total Revenue Cost                       35  117  105   87   71   74   78   81  212  307  324    454   1455

President's Outlay Proposals           2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013  04-08  04-13
-----------------------------------------------------------------------------------------------------------
Defense discretionary                     0   -1    2    8   13   22   28   32   34   36   38     44    211
Other discretionary                       0    0   -7   -9  -10  -11  -11  -13  -14  -16  -17    -37   -108
Medicare                                  0    6   10   33   38   43   46   49   53   58   64    130    400
Medicaid and SCHIP                        0    8    7    9    8    9    9    9    8    4    1     40     72
Health care tax credit                    0    0    5    6    6    6    6    6    6    5    5     23     51
Earned income and child tax credits       4    1    5    4    4    4    4    2    0   11   11     17     45
Postal Service                            3    3    3    3    3    4    4    4    5    5    5     15     38
Unemployment insurance                    0    0    0    0    1    2    3    3    3    3    3      2     17
Reemployment benefits                     0    3    1    0    0    0    0    0    0    0    0      4      4
Customs fees                              0   -1   -1   -2   -2   -2   -2   -2   -2   -2   -2     -8    -18
ANWR                                      0    0    0   -2    0    0    0    0    0    0    0     -2     -2
Spectrum auctions                         0    0    0    0    2    2    0   -1   -1   -3   -3      5     -2
Other mandatory                          -2    1    4    3    2    1    1    1    1    1    1     11     17
--------------------------------------  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  -----  -----
Total Outlay Cost (except interest)       6   18   29   54   65   79   86   91   93  103  106    245    725
Net interest                              0    3   13   20   28   39   50   65   80  102  131    103    530
Total Revenue Cost                       35  117  105   87   71   74   78   81  212  307  324    454   1455
--------------------------------------  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  -----  -----
Total Cost of President's Proposals      41  138  147  161  164  192  214  237  385  511  561    802   2710

CBO Baseline Deficit(-) or Surplus     -246 -200 -123  -57   -9   27   61   96  231  405  459   -362    891
Cost of President's Proposals            41  138  147  161  164  192  214  237  385  511  561    802   2710
--------------------------------------  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  -----  -----
Deficit Under President's Proposals    -287 -338 -270 -218 -173 -166 -153 -141 -154 -106 -102  -1164  -1820

===========================================================================================================
                   COMPARISON OF PROJECTED DEFICITS AND SURPLUSES IN CBO'S BASELINE AND
                   IN CBO'S ESTIMATE OF THE PRESIDENT'S BUDGET (in billions of dollars)
                                                                                              Total, Total,
                                 Actual                                                        2004-  2004-
President's Budget                2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013   2008   2013
-----------------------------------------------------------------------------------------------------------
On-Budget Deficit(-)              -317 -452 -512 -464 -429 -404 -416 -421 -427 -458 -424 -434  -2225  -4389
Off-Budget Surplus                 160  165  174  194  211  231  250  268  286  304  318  331   1061   2569
---------------------------------  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  -----  -----
Total Deficit(-)                  -158 -287 -338 -270 -218 -173 -166 -153 -141 -154 -106 -102  -1164  -1820

CBO's Baseline
-----------------------------------------------------------------------------------------------------------
On-Budget Deficit(-) or Surplus   -317 -408 -373 -317 -269 -240 -224 -207 -190  -73   88  128  -1423  -1678
Off-Budget Surplus                 160  163  173  195  212  231  250  268  286  304  318  331   1061   2568
---------------------------------  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  -----  -----
Total Deficit(-) or Surplus       -158 -246 -200 -123  -57   -9   27   61   96  231  405  459   -362    891

Difference
-----------------------------------------------------------------------------------------------------------
On-Budget Deficit(-) or Surplus      0  -43 -139 -146 -160 -164 -192 -215 -237 -385 -511 -561   -802  -2711
Off-Budget Surplus                   0    3    1   -1    *    *    *    *    *    *    *    *      *      1
---------------------------------  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  -----  -----
Total Deficit or Surplus             0  -41 -138 -147 -161 -164 -192 -214 -237 -385 -511 -561   -802  -2710

Memorandum:
Total Deficit(-) or Surplus      Actual
as a Percentage of GDP            2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013  04-08  04-13
-----------------------------------------------------------------------------------------------------------
President's budget                -1.5 -2.7   -3 -2.3 -1.7 -1.3 -1.2   -1 -0.9 -0.9 -0.6 -0.6   -1.8   -1.3
CBO's baseline                    -1.5 -2.3 -1.8   -1 -0.5 -0.1  0.2  0.4  0.6  1.4  2.4  2.6   -0.6    0.6

Debt Held by the Public          Actual
as a Percentage of GDP            2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013  04-08  04-13
-----------------------------------------------------------------------------------------------------------
President's budget                34.3 35.8 36.9 37.4 37.3 36.8 36.2 35.4 34.6   34 33.1 32.2   n.a.   n.a.
CBO's baseline                    34.3 35.5 35.5 34.7 33.5 31.9 30.2 28.3 26.3 23.7 20.3 16.8   n.a.   n.a.

* between -$500 million and $500 million; n.a. = not applicable.

Note: On-Budget Deficit or Surplus consists of all deficits and surpluses
      except for Social Security surplus plus net cash flow of Postal Service.
Source: Congressional Budget Office, An Analysis of the President's Budgetary
        Proposals for Fiscal Year 2004, Tables 1, 8, and 16; online at
        http://www.cbo.gov/showdoc.cfm?index=4129&sequence=0 (html) and
        ftp://ftp.cbo.gov/41xx/doc4129/03-31-AnalysisPresidentBudget-Final.pdf (pdf)

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