This paper proposes (i) a new database of tax revenue for 42 Sub-Saharan African countries (SSA) over the period 1980-2015, (ii) an estimate of tax effort for these countries, and (iii) some replication analyses of previous tax effort estimations. The database results from statistical information of the African Department of the International Monetary Fund (IMF). In particular, it allows distinguishing tax revenue from the natural resource sector from the other economic sectors. SSA countries collected on average 13.2 percent of GDP in non-resource tax revenue over the studied period and their average estimated tax effort is 0.57. In other words, SSA countries could raise 23.2 percent of GDP in non-resource taxes if they fully used their potential. In line with previous analyses, we find that countries' stage of development measured by per-capita income, financial development, and trade openness are important factors improving tax revenue in the region, while natural resource endowment and the importance of the agriculture sector reduce unambiguously the non-resource tax-to-GDP ratio. Finally, beyond the originality of the database itself and the empirical results, this work participates explicitly to the replication principle given its online development with R software (https://data.cerdi.uca.fr/taxeffort/).

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While there is an extensive literature examining the economic impact of conflict and political instability, surprisingly there have been few studies on their impact on the probability of banking crises. This paper therefore investigates whether rising conflict and political instability globally over the past several decades led to increased occurrence of banking crises in developing countries. The paper provides strong evidence that conflicts and political instability are indeed associated with higher probability of systemic banking crises. Unsurprisingly, the duration of a conflict is positively associated with rising probability of a banking crisis. Interestingly, the paper also finds that conflicts and political instability in one country can have negative spillover effects on neighboring countries' banking systems. The paper provides evidence that the primary channel of transmission is the occurrence of fiscal crises following a conflict or political instability.