Auditing institutions, such as the German Federal Court of Audit (BRH), provide information on public revenue and public spending. The question of how to increase tax compliance has been of frequent interest. Unfortunately, information from German taxpayers' declaration behaviour (beyond the...

In many countries, tax agencies are following OECD recommendations and are improving their services to increase voluntary tax compliance. Using a survey of 10,000 individual German taxpayers, we find that better service interaction quality (SIQ) is indeed positively associated with tax...

The slippery slope framework explains tax compliance along two main dimensions, trust in authorities and power of authorities, which influence taxpayers' compliance attitudes. Through frequentist and Bayesian analyses, we investigated the framework's assumptions on a sample of 2786...