We derive a general optimal income tax formula when individuals respond along both the intensiveand extensive margins and when income effects can prevail. Individuals are heterogeneous across twodimensions: their skill and their disutility of participation. Preferences over consumption and...

We estimate the responses of gross labor income with respect to marginal and average net-of-tax rates in France over the period 2003-2006. We exploit a series of reforms to the income-tax and payroll-tax schedules affecting individuals who earn less than twice the minimum wage. Our estimate for...

In this paper, I introduce money in the standard labor-matching model(Mortensen and Pissarides 1999, Pissarides 2000). A double coincidence problemmakes Fiat Money necessary as a medium of exchange. In the long-run, a rise inthe rate of money growth leads to higher inflation and higher...

We build a theoretical model to study whether a minimum wage can be welfare-improving ifit is implemented in conjunction with an optimized nonlinear income tax. We consider thisissue in a framework where search frictions on the labor market generate unemployment.Workers differ in productivity....

We consider an optimal nonlinear income tax problem in a model with search-matching unemployment and where the negotiated pre-tax wage decreases with mar-ginal tax rate but increases with the level of tax. By omitting labor supply responsesand assuming bene?t for the unemployed and an e¢ cient...