Dynamic Scoring

Updated on May 18, 2024
Article byAswathi Jayachandran
Reviewed byDheeraj Vaidya, CFA, FRM

What Is Dynamic Scoring? 

Dynamic Scoring, in general terms, is about revenue estimation that takes behavioral changes into account. It can be used as a tool to distinguish between tax increases that, when analyzed using traditional scoring methods, appear to be identical yet have quite distinct impacts on economic development.

What Is Dynamic Scoring

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It helps estimate the effect of tax reform on growth while making adjustments for variations in the gross national product. They strive to show how policy changes impact economic factors such as gross domestic product (GDP), employment, and investment. Additionally, projections of changes in tax collections, government spending, and budget deficits are made using the resulting estimates.

Key Takeaways

  • Dynamic scoring is a method for estimating the fiscal impact of a policy change, considering its indirect economic impact due to the dynamic responses of affected individuals and businesses.
  • This strategy boosts output, household earnings, capital stock, productivity, and consumption, partially offsetting direct fiscal costs.
  • The effects of scoring on revenue are contingent upon a number of elements, such as the models employed, the nature of the effects, and the degree of behavioral reactions.

Dynamic Scoring Explained 

The dynamic scoring process is a tool used by policymakers to measure the effects of tax changes on vital economic factors like employment, wages, investment, GDP, and federal revenue. It facilitates distinguishing between tax reforms that seem similar but have radically different impacts on growth in the economy. Instead of depending only on traditional scoring, it emphasizes which modifications yield the greatest benefits. 

For instance, the scoring method estimates the direct fiscal cost by comparing tax rates to corporate profits. Unlike static methods, it considers the reduction in tax revenues over the forecast period, considering the increase in post-tax profits. This enhances productivity, output, capital stock, earnings, and consumption, potentially offsetting fiscal costs.

Besides having direct effects on expenditure and revenue, it also accounts for the policy’s secondary economic implications. The impact is evaluated on all sources of government expenses and revenue. Secondary effects in dynamic scoring are calculated using econometric or macroeconomic models.

The impact of scoring on revenues varies based on effects, models, and the extent of elasticity or behavioral responses. It usually employs models of the aggregate economy. Some of these economic models have a single rate of return, type of saving, and capital supply. Furthermore, these models frequently ignore many aspects of corporate taxes.

Corporate tax revenues are minor in comparison to individual tax revenues, but they have a considerable effect on the overall rate of return. Although aggregate models consider savings rates, corporation taxes impact capital more immediately due to international capital movements.

Revenue estimation, sometimes known as dynamic scoring, has been discussed for many years. The Joint Committee on Taxation (JCT) was mandated by House Rule 13 to conduct a macroeconomic effect analysis of any legislation aimed at amending the Internal Revenue Code beginning in 2003.

A point estimate of the effects of the feedback was required in 2015. These impacts were not included in the official revenue projection, but they could have an impact on opinions about proposed laws. The models for dynamic scoring, their reflecting effects, and their response alignment with empirical data are all examined in the report.


Let us look at a few examples to understand the concept better:

Example #1

Country ABC is facing economic stagnation and low investment levels. It decides to adopt dynamic scoring to assess the potential impact of a proposed tax reform, which includes lower corporate tax rates and investment incentives. The government believes that these changes will stimulate economic growth and increase tax revenues in the long run.

The model estimates that the lower tax rates and incentives will encourage businesses to expand, attract foreign investment, and create more jobs, resulting in higher tax revenues over time. The adoption of this method of scoring allows for a more accurate understanding of the potential benefits and costs of the tax reform, enabling policymakers to make informed decisions and communicate the broader economic implications to stakeholders. The goal is to design policies that promote sustainable economic growth, job creation, and improved fiscal outcomes.

Example #2

According to an article, the 2018 budget proposal from then-President Donald Trump highlighted the differences between his policies and the real budgetary amounts because of dynamic scoring, an accounting technique that accounts for various aspects such as consumer and business behavior.

According to the White House budget, tax revenues would rise annually from 2017 to 2027, even though Trump’s treasury secretary, Steven Mnuchin, wanted to lower the US business tax rate from 35% to 15%. The question of how the federal government is able to collect more taxes annually is raised by this disparity. Critics, on the other hand, claimed that it compromises intellectual integrity by enabling Congress to employ any macroeconomic model it pleases.

Pros And Cons 

Some of the pros and cons of this type of scoring are given below:


  • The scoring utilizes all available information, arguing that failing to implement it results in wasting valuable information and that some methods do not accurately reflect the expected impact on revenue.
  • Advancements in technology and economics have bolstered the argument for dynamic scoring, with current procedures dating back to primitive computing technology. Economic analysis and modeling have also advanced, emphasizing the significance of taxpayer responses to government policy changes and the development of sophisticated models.
  • It provides better accuracy when compared to some existing methods.


  • It is a complex and challenging process that makes the models more complex and the results more uncertain. This makes them a significant challenge in predicting future outcomes.
  • Political pressure can have an impact on this method of scoring because it mostly depends on assumptions. 
  • Integration of the baseline process with the scoring is essential. However, for that, more effort must be put into creating baselines, and the current process for creating baselines for the legislation passed must be significantly altered.
  • Reduced taxes may have a detrimental macroeconomic impact by discouraging capital formation. Consequently, it is necessary to assess all revenue provisions—not just those with substantial incentive impacts. Since supply-side incentives and budgetary consequences might have an impact on revenue laws, this method of scoring should take into account all channels and expenditure-side changes. 
  • Assumptions on monetary and fiscal responses are necessary for dynamic scoring in fiscal policy.

Dynamic Scoring vs Static Scoring

Dynamic ScoringStatic Scoring
It takes into consideration the macroeconomic and behavioral implications of a policy, giving crucial context for understanding how specific issues impact the economy.  Conventional (or static) scoring, on the other hand, ignores feedback and maintains a constant economy size.
This score examines how policy changes impact taxpayer behavior and how that behavior impacts macroeconomic variables. Static scoring operates under the presumption that tax changes have no impact on taxpayer decisions. Therefore, static scoring operates under the premise that macroeconomic factors such as GDP, employment, and investment are unaffected by these tax changes.
The scope of this scoring is wider, covering a multitude of domains that are susceptible to policy modifications.Static scoring is one-dimensional and has a narrow scope.

Frequently Asked Questions (FAQs)

Does CBO do dynamic scoring?

The Congressional Budget Office (CBO) uses this scoring to provide a more thorough evaluation of the possible economic impact of proposed policy changes. CBO dynamic scoring is done by incorporating macroeconomic factors into the analysis of proposed legislation.

What is the dynamic scoring index?

There isn’t a particular dynamic scoring index. Instead of depending on a single index, the scoring estimates the macroeconomic effects of policy changes. It takes into account a variety of economic factors and how they are interrelated.

What is the difference between dynamic scoring and dynamic analysis?

The focus of dynamic scoring and dynamic analysis is different. The analysis includes a more thorough evaluation of the economic repercussions of policy changes than only budgetary concerns; this includes effects on investment, employment, and economic growth over the years.

This article has been a guide to what is Dynamic Scoring. Here, we compare it with static scoring, and explain its examples along with its pros & cons. You may also find some useful articles here –

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