Introduction Since the Stern Review (Stern 2007) and the debate it has sparked off, the discount rate has been at the center of heated discussions about climate policies. In the very long run, the discount rate makes a huge difference in the evaluation of policies. The following table (Table 1) shows the minimum return that a $1 investment for the future should have to be considered better than...

It is widely recognized that the economics of distant-future events, like climate change, is critically dependent upon the choice of a discount rate. Unfortunately, it is unclear how to discount distant-future events when the future discount rate itself is unknown. In previous work, an analytically-tractable approach called ‘‘gamma discounting’’ was proposed, which gave a declining discount rat...

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In the economics of climate change, the future benefits of greenhouse gas emissions abatement are commonly discounted at a rate equal to the long-run return on corporate stocks, which averaged 6% per year during the 20 century. Since a 6% discount rate implies that one dollar of benefits obtained one century from the present attains a present value of less than one cent, this method implies tha...

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In this paper we ask whether the US government should replace its current discounting practices with a declining discount rate schedule, as the UK and France have done, or should continue to discount the future at a constant exponential rate. To address the question, we briefly present the theoretical basis for a declining discount rate (DDR) schedule, but focus on how, in practice, a DDR could...

With the widespread use of manufacturing philosophies such as Just-In-Time (JIT), emphasis has shifted to the simultaneous consideration of cardinal and ordinal data in supplier selection process. Traditionally, many optimization models of supplier selection assume that the average prices of related expenditures are constant. This is far beyond the real situation. In fact, suppliers usually off...

Using data from reorganization proposals filed by bankrupt Canadian firms, we estimate the discount rate implicit in the creditors’ reorganization decision. Using two approaches, a grid-search and an optimization algorithm, we estimate the implicit monthly discount rate in reorganization to be around 5 percent, which corresponds to an annual discount rate of 87 percent.

A possibly immortal agent tries to maximise its summed discounted rewards over time, where discounting is used to avoid infinite utilities and encourage the agent to value current rewards more than future ones. Some commonly used discount functions lead to time-inconsistent behavior where the agent changes its plan over time. These inconsistencies can lead to very poor behavior. We generalise t...

This paper discusses the incentive to bundle when consumer valuations are nonadditive and/or when products are supplied by separate sellers. Whether integrated or separate, firms have an incentive to introduce a bundle discount when demand for the bundle is elastic relative to demand for stand-alone products. A simple formula is derived for when an integrated firm supplying substitute products ...