Using Taxes to Meet an Emission Target

Robert Harris and William Pizer

No 27781, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: A sizeable number of papers beginning with Roberts and Spence (1976) have studied the use of price floors and ceilings (or “collars”) to manage prices in tradable permit markets. In contrast, economists have only recently begun examining polices to manage quantities under a pollution tax. Importantly, it can be difficult to know how to evaluate these policies, as papers dating back to Pizer (2002) suggest welfare is maximized by not focusing on quantities in the first place. In this paper, we propose an objective function to evaluate these alternative “carbon tax policies to meet an emission target.” The objective function includes a discrete jump in marginal emission consequences at the target, where the discontinuity can be interpreted as a true benefit measure or a necessary political constraint. We parameterize these emission consequences using recent legislative proposals, coupling this function with mitigation cost estimates to define the complete objective. This objective identifies the first-best tax policy design, one that requires relatively complex adjustments to mimic a tradable permit system. Turning to simpler, practical rules, we find that such rules achieve much of the difference in expected net benefits between an ordinary, exogenous tax and the first-best tax policy design. However, the ranking among simple rules depends on the interpretation of the higher, above-target emission penalty as a political constraint or a true benefit measure. We find that making these views explicit could facilitate billions of dollars per year in welfare gains.

JEL-codes: H23 Q54 Q58 (search for similar items in EconPapers)
Date: 2020-09
New Economics Papers: this item is included in nep-ene, nep-env, nep-pbe and nep-reg
Note: EEE
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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