In short, yes. I use a multi-region integrated assessment model with fuel-specific endogenous technical change to examine the impact of Europe and China reducing emissions to zero by mid-century. Without international technological diffusion this is insufficient to avoid catastrophic climate change. But when innovation can diffuse overseas, long-run temperature increases are limited to 3 degrees. This occurs because policy not only encourages green innovations but also dissuades dirty innovations which would otherwise spread. The most effective policy package in emissions-reducing regions is a research subsidy funded by a carbon tax, driven in the short term by the direct effect of the carbon tax on the composition of energy, and later by innovation induced by research subsidies. Green production subsidies are ineffective because they undermine incentives for innovation.
Youssouf Camara, Bjart Holtsmark, and Florian Misch
This paper empirically estimates the effects of electric vehicles (EVs) on passenger car emissions to inform the design of policies that encourage EV purchases in Norway. We use exceptionally rich data on the universe of cars and households from Norway, which has a very high share of EVs, thanks to generous tax incentives and other policies. Our estimates suggest that household-level emission savings from the purchase of additional EVs are limited, resulting in high implicit abatement costs of Norway’s tax incentives relative to emission savings. However, the estimated emission savings are much larger if EVs replace the dirtiest cars. Norway’s experience may also help inform similar policies in other countries as they ramp up their own national climate mitigation strategies.
Mario Pessoa, Andrew Okello, Artur Swistak, Muyangwa Muyangwa, Virginia Alonso-Albarran, and Vincent de Paul Koukpaizan
The value-added tax (VAT) has the potential to generate significant government revenue. Despite its intrinsic self-enforcement capacity, many tax administrations find it challenging to refund excess input credits, which is critical to a well-functioning VAT system. Improperly functioning VAT refund practices can have profound implications for fiscal policy and management, including inaccurate deficit measurement, spending overruns, poor budget credibility, impaired treasury operations, and arrears accumulation.This note addresses the following issues: (1) What are VAT refunds and why should they be managed properly? (2) What practices should be put in place (in tax policy, tax administration, budget and treasury management, debt, and fiscal statistics) to help manage key aspects of VAT refunds? For a refund mechanism to be credible, the tax administration must ensure that it is equipped with the strategies, processes, and abilities needed to identify VAT refund fraud. It must also be prepared to act quickly to combat such fraud/schemes.
Profit shifting remains a key concern in international tax system debate, but discussions are largely based on aggregate estimates, with less attention paid to individual sectors. Drawing on a novel dataset, we quantify tax avoidance risks in the extractive industries, a sector which is revenue critical for many developing economies. We find that a one percentage point increase in the domestic corporate tax rate has historically reduced sectoral profits by slightly over 3 percent; and the response tends to be more pronounced among mining than among hydrocarbon firms. There is only weak evidence transfer pricing rules contain tax minimization efforts of MNEs in our sample, but interest limitation rules (e.g., thin capitalization or earnings based rules) do reduce the observable extent of profit shifting. Our findings highlight the challenge of taxing income in the natural resource sector and suggest how fiscal regime design might be strengthened.