I'm researching the long-term economic impacts of rising income inequality for a policy analysis course, and while the data on wealth concentration is clear, I'm struggling to find compelling, non-partisan studies on the efficacy of specific policy interventions beyond theoretical models. I want to compare approaches like progressive taxation, wealth taxes, and direct investment in social mobility programs, but much of the literature seems ideologically siloed. For economists or policy researchers, what are the most rigorous longitudinal studies or real-world case studies you've found that measure the actual outcomes of policies designed to mitigate income inequality? How do you separate political rhetoric from measurable economic effects when evaluating something like a universal basic income pilot or changes to capital gains taxation?
Great topic. For objective, longitudinal evidence on tax policy and inequality, start with ex post evaluations that use credible counterfactuals and transparent methods. Key sources to anchor your literature review include major international organisations (IPCC? Not relevant here) and specialized policy bodies: IMF and OECD working papers on tax policy and distribution, World Bank and ILO policy notes on social protection, and a steady stream of peer‑reviewed articles in journals like Climate Policy, Journal of Economic Perspectives, and the Journal of Public Economics. Beyond broad reviews, zero in on studies that actually track outcomes over multiple years and across cohorts, not just one-off snapshots. A few well‑cadded lines of evidence you’ll likely find useful: EITC/CTC expansions in the U.S. with long-run labor and income impacts; Finland’s basic income experiment for wellbeing and employment outcomes; Sweden and other Nordic tax/benefit reforms for distributional effects; and wealth taxation experiments and reforms (France, Nordic countries, and cross-country syntheses) for revenue versus inequality trade-offs. For a concrete start, you can assemble a short reading list around: ex post policy evaluation methods, evidence on tax progressivity and outcomes, and real-world social program trials.