This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility: Will higher sin taxes, and therefore higher prices, on candy, soft drinks and beer lead to more cross-border shopping? The answer is often assumed to be yes in the public debate, where one of the main arguments against sin taxes on unhealthy products has long been that higher prices will encourage more Danes to shop across the border.
However, a team of researchers from the Department of Food and Resource Economics at the University of Copenhagen challenges that argument in a new study published in The Scandinavian Journal of Economics. The researchers analyzed Danish households' purchasing patterns during the COVID-19 border closures in 2020 and 2021, when cross-border shopping was effectively impossible. More specifically, they examined how much of the shopping that normally takes place at the Danish–German border returned to Danish stores when cross-border shopping was no longer an option.
"The amount is considerably smaller than official Danish estimates suggest. The authorities assume that all purchases made in Germany would instead have been made in Denmark if the border had been closed. Our findings show that this is not the case," says Magnus Munk Bjerg, a Ph.D. student at the Department of Food and Resource Economics and co-author of the study.
According to the Danish Ministry of Taxation, the Danish state lost DKK 1.16 billion due to cross-border shopping in 2019, excluding tobacco products. The researchers' estimate is substantially lower, at DKK 415 million. "The Ministry of Taxation bases its calculations on what Danes buy in Germany.
But if we want to understand what Denmark actually loses, we need to look at what happens to consumption in Denmark. That is precisely what we have done," says Bjerg. He also offers a possible explanation for why Danes do not simply buy the same products in Denmark that they purchase across the border: "Once people have packed the car or trailer and driven a considerable distance, they are likely to buy a range of additional products to make the trip worthwhile," says Bjerg.
In the study, the researchers compare purchases made by households living close to the border with those made by households living so far away that cross-border shopping has never represented a financial benefit. They found that households living within 30 kilometers (19 miles) of the border increased their spending on sin goods, including candy, chocolate, potato chips, soft drinks, beer, wine and spirits, by 109% in Danish stores when the border closed. Overall, households within 150 kilometers (93 miles) of the border increased their spending on sin goods by an average of 21% as a result of the border closure.
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