Wednesday, 16 April 2014

Dynamic Scoring

Some interest has been expressed recently in the news about Dynamic Scoring.
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Dynamic scoring predicts the impact of fiscal policy changes by forecasting the effects of economic agents' reactions to incentives created by policy. It is an adaptation of static scoring, the traditional method for analyzing policy changes.
When feasible, the method yields a more accurate prediction of a policy's impact on a country's fiscal balance and economic output. The potential for heightened accuracy arises from recognition that households and firms will alter their behavior to continue maximizing welfare (households) or profits (firms) under the new policy. Dynamic scoring is more accurate than static scoring when the econometric model correctly captures how households and firms will react to a policy change.
Dynamic scoring is difficult to apply in practice due to the complexity of modeling economic agents' behavior. Economists must infer from economic agents' current behavior how the agents would behave under the new policy. Difficulty increases as the proposed policy becomes increasingly unlike current policy. Likewise, the difficulty of dynamic scoring increases as the time horizon under consideration lengthens. This is due to any model's intrinsic inability to account for unforeseen external shocks in the future.
Further, the reaction to policy changes may not occur quickly, and thus an intrinsic lag in market behavior obscures the real effect of policy changes.

United States[edit]

The methodologies of scoring have origins in Arthur Laffer's "Laffer Curve" (i.e. tax receipts vs tax rates) of the Reagan administration.[citation needed] Using dynamic scoring has recently been promoted by Republican legislators to argue that supply-side tax policy, for example the Bush tax cuts of 2001[1] and 2011 GOP Path to Prosperity proposal,[2] return higher benefits in terms of GDP growth and revenue increases than are predicted from static scoring. Some economists[who?] argue that their dynamic scoring conclusions are overstated,[3] pointing out that CBO practices already include some dynamic scoring elements and that to include more may lead to politicization of the department.[4]
On May 9, 2013, Rep. Tom Price introduced the Pro-Growth Budgeting Act of 2013 (H.R. 1874; 113th Congress) into the United States House of Representatives.[5] The bill would require the Congressional Budget Office to provide a macroeconomic impact analysis for bills that are estimated to have a large budgetary effect.[6] This would mean using a dynamic scoring method.

See also[edit]


  1. Jump up ^ Wilson, D; William Beach. "The Economic Impact of President Bush's Tax Relief Plan". The Heritage Foundation. Retrieved 6 April 2011. 
  2. Jump up ^ Ryan, Paul. "Path to Prosperity 2012". Retrieved 6 April 2011. 
  3. Jump up ^ "Brad deLong's blog". 2006-05-15. Retrieved 2012-03-27. 
  4. Jump up ^ "Center on Budget and Policy Priorities" (PDF). Retrieved 2012-03-27. 
  5. Jump up ^ "H.R. 1874 - Summary". United States Congress. Retrieved 28 March 2014. 
  6. Jump up ^ "H.R. 1874 - CBO". Congressional Budget Office. Retrieved 28 March 2014. 

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