Cost-benefit analysis

(noun)

A systematic process for calculating and comparing the marginal benefits and marginal costs of a project or activity.

Examples of Cost-benefit analysis in the following topics:

  • Cost-Benefit Analysis

    • The government uses cost-benefit analysis to decide whether to provide a public good.
    • The government uses cost-benefit analysis to decide whether to provide a particular public good and how much of it to provide.
    • Cost-benefit analysis, which is also sometimes called benefit-cost analysis, is a systematic process for calculating the benefits and costs of a project to society as a whole.
    • The positive and negative effects captured by cost-benefit analysis may include effects on consumers, effects on non-consumers, externality effects, or other social benefits or costs.
    • These costs and benefits will need to be translated into monetary terms for the sake of analysis.
  • Optimal Quantity of a Public Good

    • The government is providing an efficient quantity of a public good when its marginal benefit equals its marginal cost.
    • The public good provider uses cost-benefit analysis to decide whether to provide a particular good by comparing marginal costs and marginal benefits.
    • Cost-benefit analysis can also help the provider decide the extent to which a project should be pursued.
    • Output activity should be increased as long as the marginal benefit exceeds the marginal cost.
    • An activity should not be pursued when the marginal benefit is less than the marginal cost.
  • Individuals Make Decisions at the Margins

    • The cost or benefit of the single decision is called the marginal cost or the marginal benefit.
    • By subtracting the cost from the benefit, Car A offers $5,000 of marginal benefit, Car B offers $3,000, and Car C offers $10,000.
    • Note that you are concerned not with your total or average cost and benefit (assuming no resource or other external restrictions), but with the marginal cost and benefit.
    • The tools of marginal analysis can illustrate the marginal costs and the marginal benefits of reducing pollution.
    • At point $Q_c$, the marginal costs will exceed the marginal benefits.
  • Economic Way of Thinking

    • Benefit/cost analysis is a basic approach that is used.
    • If the benefits associated with a choice (alternative) exceed the costs incurred with the choice, there is an increase in net benefits.
    • If the costs exceed the benefits of a choice, it will not increase net benefits.
    • Notice that it is the cost and benefit associated with a choice.
    • Jules Dupuit [1804-1866, French], along with colleagues, had worked out the importance of marginal benefits and marginal costs in making decisions.
  • Marginal Analysis

    • Basically, this Marginalist Revolution was the application of calculus to economic analysis.
    • Marginal analysis is the analysis of rates of changes in variables.
    • It is crucial to remember that the marginal value (cost, benefit, etc) is the value associated with a specific choice.
    • The answer depends on our analysis of the benefits and costs of each unit of berries we pick.
    • The first units of berries are picked because the marginal benefit of each unit (MB) is greater than the marginal cost (MC).
  • Criteria to evaluate alternatives

    • Most choices involve marginal benefits and marginal costs that change the welfare or utility of more than one individual.
    • This is the foundation of criteria such as Benefit/cost analysis, rate of return on investment and internal rates of return.
    • There is necessarily a judgment about the morality of the dams and the imposition of costs and benefits of various groups of individuals.
    • Building the dams imposed costs and conferred benefits on different groups of people just as breaching the dams will.
    • If the benefits exceed the costs of an action, the consequence is an increase in utility.
  • Economic Costs

    • The economic cost is based on the cost of the alternative chosen and the benefit that the best alternative would have provided if chosen.
    • So, the economic cost of college is the accounting cost plus the opportunity cost.
    • The economic cost of a decision is based on both the cost of the alternative chosen and the benefit that the best alternative would have provided if chosen.
    • So, the economic cost of college is the accounting cost plus the opportunity cost.
    • Total cost (TC): total cost equals total fixed cost plus total variable costs (TC = TFC + TVC) .
  • Introducing Externalities

    • An externality is a cost or benefit that affects an otherwise uninvolved party who did not choose to be subject to the cost or benefit.
    • In economics, an externality is a cost or benefit resulting from an activity or transaction, that affects an otherwise uninvolved party who did not choose to be subject to the cost or benefit .
    • In regards to externalities, the cost and benefit to society is the sum of the value of the benefits and costs for all parties involved.
    • The third parties who experience external costs from a negative externality do so without consent, while the individuals who receive external benefits do not pay a cost.
    • An externality is a cost or benefit that results from an activity or transaction and that affects an otherwise uninvolved party who did not choose to incur that cost or benefit.
  • Types of Costs

    • It consists of variable costs and fixed costs.
    • Total cost is the total opportunity cost of each factor of production as part of its fixed or variable costs .
    • Variable costs are also the sum of marginal costs over all of the units produced (referred to as normal costs).
    • The economic cost of a decision that a firm makes depends on the cost of the alternative chosen and the benefit that the best alternative would have provided if chosen.
    • Economic cost is the sum of all the variable and fixed costs (also called accounting cost) plus opportunity costs.
  • Production Possibility Frontier

    • For further analysis, additional information is always supplied with a PPF including the period of time taken for the observation, production technologies, and the amounts of inputs that were available.
    • The sacrifice in production of Good B is called opportunity cost.
    • All three of the PPF graphs are directly influenced by the opportunity cost.
    • A common PPF where there is an increase in opportunity cost.
    • Explain the benefits of trade and exchange using the production possibilities frontier (PPF)
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