We investigate whether taxpayers respond to a large, ACA-induced upward tax notch at the Federal Poverty Level. Using administrative tax data, we document bunching in the income distribution and provide estimates of the taxable income elasticity. Our estimates are the only ones using US data...

Is government guiding the invisible hand at the top of the labor market? We use new administrative data to measure physicians' earnings and estimate the influence of healthcare policies on these earnings, physicians' labor supply, and allocation of talent. Combining the administrative registry...