TY - JOUR AU1 - Okada, Masayuki AB - This paper quantitatively derives the welfare-improving earnings test within an optimal income tax framework. I construct a life cycle model of labor supply and savings to compute social welfare. The preference parameters are estimated by the method of simulated moments using Japanese data. I find that social welfare under the current earnings test with large changes of marginal tax rates at thresholds is substantially lower than social welfare under the earnings test with a linear tax rate. In addition, an earnings test with negative marginal tax rates will increase social welfare more than a system without negative marginal tax rates. TI - The optimal earnings test and retirement behavior JF - International Tax and Public Finance DO - 10.1007/s10797-022-09734-0 DA - 2023-08-01 UR - https://www.deepdyve.com/lp/springer-journals/the-optimal-earnings-test-and-retirement-behavior-ls140rGtdp SP - 1036 EP - 1068 VL - 30 IS - 4 DP - DeepDyve ER -