What is the effect of e-commerce on the geographic distribution of local sales tax revenues? Using COVID-19 as a shock to online shopping and hand-collected high-frequency data on local sales tax revenue, we document an important shift in the state and local public finance landscape. As...

If online transactions are tax-free, increased online shopping may lower tax rates as jurisdictions seek to reduce tax avoidance; but, if online firms remit taxes, online sales may put upward pressure on tax rates because internet sales help enforce destination-based taxes. I find that higher...

Requiring firms, rather than individuals, to remit sales taxes improves tax compliance. In the U.S., this shift toward firm-based remittance rules for remote purchases occurred gradually after South Dakota v. Wayfair. Using comprehensive and high-frequency local sales tax revenue data, we show...

We conduct an experiment where subjects read online news articles and are shown ads for brands next to those articles. Using eye-tracking technology, we measure the attention that each individual devotes to each article and ad. Then, respondents choose between cash or vouchers for the brands...

We study consumer response towards sponsored search advertising and how to improve advertising performance on a large e-commerce platform. Our research design is based on a field experiment which randomizes the salience of ad disclosure to consumers, and a natural experiment which eradicates a...

Rapid growth in e-commerce has altered the ability of jurisdictions to enforce commodity taxes on a destination basis. This results in different effective tax rates depending on the way in which goods and services are purchased and the characteristics of both the products and the sellers. We...

We embed a lockdown choice in a simplified epidemiological model and derive formulas for the optimal lockdown intensity and duration. The optimal policy reflects the rate of time preference, epidemiological factors, the hazard rate of vaccine discovery, learning effects in the health care...