Monetary theory reversed: Virtual currency issuance and miners’ remuneration

March 14, 2018

By Luca Marchiori

This study analyzes the macroeconomic implications of virtual currency issuance. It builds on a standard cash-in-advance model extended with (i) ‘virtual’ goods, sold against virtual currency, and (ii) miners, the agents providing payment services. The main finding is that virtual currency growth may have effects opposite to those predicted by monetary theory when miners are rewarded with newly created coins. Declining currency issuance, as in Bitcoin, raises the price of virtual goods, which counteracts the traditional impact of a reduced inflation tax. The paper also shows how fiat money growth affects the welfare effects of virtual currency creation.

What this paper is saying is that there is a sweet spot for virtual currencies where they have been accepted for transactions but are not yet too close to the supply limit. Once supply is too limited to reasonably reward miners, the later start charging higher transaction fees and the cost of the goods bought with virtual currency increases, leading to a net welfare loss. In other words, virtual currencies are cool for a while but are not there to stay.


Are Consumers’ Spending Decisions in Line With an Euler Equation?

March 6, 2018

By Lena Dräger and Giang Nghiem

Evaluating two new survey datasets of German consumers, we test whether individual consumption spending decisions are formed according to an Euler equation derived from consumption life-cycle models. Measured in qualitative individual changes, our results suggest that current and planned spending are positively correlated, thus supporting the hypothesis of consumption smoothing. Also, current spending is positively correlated with inflation expectations, and negatively with nominal interest rate expectations. Interestingly, the effect of perceived real interest rates is only significant for financial market participants, financially unconstrained households and those with high financial literacy, implying that these are important conditions for the ability to smooth consumption over time. Moreover, these households are better positioned in the wealth and income distributions. In that sense, the ability to smooth consumption may be a channel through which distributional effects of policy shocks may occur. Finally, news on inflation and monetary policy observed by the consumer strengthen the effect of their inflation expectations on current spending, suggesting that imperfect information may also influence the Euler equation relationship.

There are many papers estimating Euler equations, but they usually do it on aggregate data. This paper uses two German surveys and it is with great relief that we learn that the consumption Euler equation is still working well.

Two papers on unemployment insurance and misallocation

March 5, 2018

Unemployment Insurance Take-up Rates in an Equilibrium Search Model

By Stéphane Auray, David Fuller and Lkhagvasuren Damba

From 1989-2012, on average 23% of those eligible for unemployment insurance (UI) benefits in the US did not collect them. In a search model with matching frictions, asymmetric information associated with the UI non-collectors implies an inefficiency in non-collector outcomes. This inefficiency is characterized along with the key features of collector vs. non-collector allocations. Specifically, the inefficiency implies that noncollectors transition to employment at a faster rate and a lower wage than the efficient levels. Quantitatively, the inefficiency amounts to 1.71% welfare loss in consumption equivalent terms for the average worker, with a 3.85% loss conditional on non-collection. With an endogenous take-up rate, the unemployment rate and average duration of unemployment respond significantly slower to changes in the UI benefit level, relative to the standard model with a 100% take-up rate.

Social Insurance and Occupational Mobility

By German Cubas and Pedro Silos

This paper studies how insurance from progressive taxation improves the matching of workers to occupations. We propose an equilibrium dynamic assignment model to illustrate how social insurance encourages mobility. Workers experiment to find their best occupational fit in a process filled with uncertainty. Risk aversion and limited earnings insurance induce workers to remain in unfitting occupations. We estimate the model using microdata from the United States and Germany. Higher earnings uncertainty explains the U.S. higher mobility rate. When workers in the United States enjoy Germany’s higher progressivity, mobility rises. Output and welfare gains are large.

By chance, there a two papers with a similar message about unemployment insurance in this week’s issue of NEP-DGE. Both argue that UI is essential in getting good fits on the labor market. This is especially true as the jobs and the labor market become more and more specialized.