Taxing for Growth

Industry Investment Rating - The report identifies a critical tax-to-GDP ratio threshold of around 12.5% for future economic growth acceleration, with a slightly higher threshold of 13% for inclusive growth [9] - Countries transitioning from low-income to middle-income status typically achieve an average tax-to-GDP ratio of 15% in the decade prior to the shift [10] Core Findings - A tax-to-GDP ratio of 15% is crucial for countries transitioning from low- to middle-income status, with significant benefits observed when tax collection increases from 7% to 15% of GDP [10][11] - Increasing tax revenue from 7% to 15% of GDP is associated with an additional 10 percentage points of cumulative growth over the next ten years and a reduction in the prosperity gap by about half [11][35] Mechanisms of Tax Impact on Growth - Higher tax revenues lead to increased investment in health and education, enhancing productivity and reducing economic volatility [10][37] - A tax-to-GDP ratio of 15% is associated with lower government spending volatility and reduced real GDP growth volatility, contributing to economic stability [49][50] Transitioning to Higher Income Status - Countries transitioning from low-income to lower-middle-income status achieve a critical tax-to-GDP ratio of 15%, reflecting a 3-4 percentage point increase over the decade before transitioning [56] - The average tax-to-GDP ratio increases to 23.4% and 25% when transitioning from lower-middle-income to upper-middle-income and from upper-middle-income to high-income groups, respectively [56]