We recommend that the ons uses the uk treasurys green book real rate of. An important consideration when discounting future costs and benefits to present value is the discount rate applied. Hm treasury, green book appraisal and evaluation in central. Treasury green book homepage on how to do this in practice. Each of these areas applies a discount factor to convert future. To make the green book easier to navigate, download, and print, chapters are available in pdf format only. Appraisal and evaluation in central government produced by hm treasury recommends a discount of rate of 3. Supplementary guidance to the green book on intergenerational wealth transfers and social discounting. This note considers whether the 2050 calculator should use the standard green book discount rate 3. There are a number of economic factors that impact treasury yields, such as interest rates, inflation, and economic growth. Reviewing discount rates in ons valuations office for national.
The stpr is the rate used for discounting future benefits and costs in. The choice of common vs different discount rates for costs and outcomes depends on multiple factors. The rate at which future costs and outcomes are discounted has long stood at 3. The treasury recommends that the following real, pretax discount rates be. Green book supplementary guidance standard discount factors discount rate discount factor health discount factors discount factors links. The source of this discount rate is the social time preference rate stpr, presented in previous versions of the treasury s green book, which provides central government guidance on appraisal evaluation 3. All of these factors tend to influence each other as well. Discounting for cbas involving private investment, but. The green book is guidance issued by hm treasury on how to appraise policies, programmes and projects. The views displayed in this document are those of the authors and do not reflect those of hm treasury. In addition to the general guidance in our cost benefit analysis guide, the treasury also provides specific guidance on the discount rates to be used. For nearly half a century the treasurys green book has provided. It also provides guidance on the design and use of. Hm treasury guidance on how to appraise and evaluate policies, projects and.
The green book contains federal agency contact information and website addresses where appropriate. The green book appraisal and evaluation in central government. The green book recommends that costs and benefits occurring in the first 30 years of a programme, project or policy be discounted at an annual rate of 3. A technical document outlining how the discount rates were determined is also available below.
Pdf the social discount rate in cost benefit analysis. The green book is designed to deal primarily with exceptions or issues unique to federal government operations. Discounting for cbas involving private investment, but public benefit 2 section 1 1 introduction and summary purpose 1. The treasurys green book sets out the definition and deconstruction of the social. The green book was updated in march 2018, and with it came new guidance on. The green book discount rate is generated using the following equation. In 2003 hm treasury published its long awaited green book.
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