2023, Scholl, Almuth

This paper studies how distributional and electoral concerns shape sovereign default incentives within a quantitative model of sovereign debt with heterogeneous agents and non-linear income taxation. The small open economy is characterized by a two-party system in which the left-wing party has a larger preference for redistribution than the right-wing party. Political turnover is the endogenous outcome of the electoral process. Fiscal policy faces a tradeoff: On the one hand, the government has incentives to finance redistribution via external debt to avoid distortionary income taxation. On the other hand, the accumulation of external debt raises the cost of borrowing. Quantitative findings suggest that the left-wing party implements a more progressive income tax, is more prone to default, and has a lower electoral support than the right-wing party due to worse borrowing conditions and the distortionary effects of income taxation. In equilibrium, electoral uncertainty raises sovereign default risk.

2020-03, Kaas, Leo, Mellert, Jan, Scholl, Almuth

Sovereign debt crises are often accompanied by deep recessions with sharp declines in external credit to the private sector. In a sample of emerging economies we find that both, sovereign and private interest rate spreads are countercyclical. This paper presents a model of a small open economy that accounts for these empirical regularities. It includes private firms, which finance a fraction of imports by external debt and are subject to idiosyncratic productivity risk, and a government, which borrows internationally and taxes firms to finance public expenditures. The model gives rise to endogenous private and sovereign interest rate spreads and a dynamic feedback mechanism between sovereign and private default risks through the endogenous response of fiscal policy to adverse productivity shocks.

2018, Scholl, Almuth

This paper studies the effectiveness of debt relief to stimulate economic growth in the most heavily indebted poor countries. We develop a neoclassical framework with a conflict of interest between the altruistic donor and the recipient government, and model conditionality as an imperfectly enforceable dynamic contract. In contrast to the recent practice of fully cancelling debt, optimal incentive‐compatible conditionality is accompanied by a concessionality level that implies a combination of subsidized loans and outright grants. The optimal concessionality level depends on the recipient's access to international financial markets and on the strength of the conflict of interest. Incentive‐compatible transfers with optimal concessionality levels generate substantial welfare gains. If the donor does not implement the optimal concessionality level and provides subsidized loans only, then the effectiveness of transfers decreases in the long run with severe welfare implications. In contrast, transfers are less effective in the short run if the donor offers outright grants only.

2016, Fink, Fabian, Scholl, Almuth

In times of sovereign debt crises, International Financial Institutions provide temporary financial support contingent on the implementation of specific macroeconomic policies. This paper develops a model of sovereign debt and default with endogenous participation rates in bailout programs. Conditionality enters as a constraint on fiscal policy. In the model, the insurance character of bailouts generates incentives for debt accumulation. Quantitative results suggest that bailouts prevent sovereign defaults in the short-run but may come at a cost of a greater default probability in the long-run. Increasing the intensity of conditionality lowers the bailout participation rate and generates a hump-shaped pattern of sovereign default risk.

2021, Prein, Timm M., Scholl, Almuth

This paper develops a stochastic dynamic politico-economic model of sovereign debt to analyze the impact of bailouts on political turnover and sovereign default risk. We consider a small open economy in which the government has access to official loans conditional on the implementation of austerity policies. There is a two-party system in which both parties care about the population’s welfare but differ in an exogenous utility cost of default. Political turnover is the endogenous outcome of the individual voting behavior. In a quantitative application to the Greek economy, we find that bailouts amplify political turnover risk, which, in turn, elevates sovereign interest spreads. While stricter conditionality fosters the probability of political turnover and sovereign default in the short run, it may mitigate political turnover and default risk in the long run. The frequency of political turnover is U-shaped in the strength of conditionality.

2018, Prein, Timm M., Scholl, Almuth

This paper develops a stochastic dynamic politico-economic model of sovereign debt to analyze the impact of bailouts on sovereign default risk and political turnover. We consider a small open economy in which the government has access to official loans conditional on the implementation of austerity policies. There is a two-party system in which both parties care about the population’s welfare but differ in an exogenous utility cost of default. Political turnover is the endogenous outcome of the individual voting behavior. In a quantitative exercise we apply the model to Greece and find that bailout episodes are characterized by an increased risk of political turnover. In the short run, stricter conditionality raises the risk of sovereign default because it reduces the participation rate in bailout programs. In the long run, however, stricter conditionality limits the accumulation of debt which lowers sovereign default risk. We show that the frequency of political turnover is U-shaped in the strength of conditionality.

2017-09, Le Blanc, Julia, Scholl, Almuth

We employ a life-cycle model with income risk to analyze how tax-deferred individual accounts affect households' savings for retirement. We consider voluntary accounts as opposed to mandatory accounts with minimum contribution rates. We contrast add-on accounts with carve-out accounts that partly replace social security contributions. Quantitative results suggest that making add-on accounts mandatory has adverse welfare effects across income groups. Carve-out accounts generate positive welfare effects across all income groups, but gains are lower for low income earners. Default investment rules in individual accounts have a modest impact on welfare.

2021, Di Nola, Alessandro, Kocharkov, Georgi, Scholl, Almuth, Tkhir, Anna-Mariia

This paper studies how tax evasion in the self-employment sector affects aggregate outcomes and welfare. We develop a dynamic general equilibrium model with incomplete markets in which heterogeneous agents choose between being a worker or self-employed. Self-employed agents may misreport their business income but face the risk of being detected by the tax authorities. Our model replicates important quantitative features of the U.S. economy in terms of income, wealth, self-employment, and misreporting. Tax evasion alleviates credit constraints and leads to a larger self-employment sector but reduces the average size and productivity of self-employed businesses. Tax evasion generates positive welfare effects for the self-employed at the expense of the workers.

2018, Di Nola, Alessandro, Kocharkov, Georgi, Scholl, Almuth, Tkhir, Anna-Mariia

There is a sizable overall tax gap in the U.S., albeit tax non-compliance differs sharply across income types. While only small percentages of wages and salaries are underreported, the estimated misreporting rate of self-employment business income is substantial. This paper studies how tax evasion in the self-employment sector affects aggregate outcomes and welfare. We develop a dynamic general equilibrium model with incomplete markets in which heterogeneous agents choose between being a worker or self-employed. Self-employed agents may hide a share of their business income but face the risk of being detected by the tax authority. Our model replicates important quantitative features of the U.S. economy in terms of income, wealth, self-employment, and tax evasion. Our quantitative ndings suggest that tax evasion leads to a larger self-employment sector but it depresses the average size and productivity of self-employed businesses. Tax evasion generates positive aggregate welfare effects because it acts as a subsidy for the self-employed. Workers, however, suffer from substantial welfare losses.

2017, Scholl, Almuth

This paper develops a stochastic dynamic politico-economic model of sovereign debt to analyze the interaction of sovereign default risk and political turnover. Two parties differ in their preferred size of unproductive public spending which is financed by taxes and external debt. Electoral outcomes are characterized by the economic benefits from the incumbent's policies and stochastic idiosyncratic ideological aspects. Quantitative findings suggest that endogenous political turnover increases the discrepancies between the optimal borrowing and default policies of the two parties. Prior to a debt crisis, the incumbent government accumulates external debt to foster the probability of remaining in power. The dynamic interaction of electoral outcomes, external debt, and sovereign default supports arguments for imposing institutional constraints on incumbent governments.