Gender Based Taxation (GBT) satisfies Ramsey´s optimal criterion by taxing less the moreelastic labor supply of (married) women. This holds when different elasticities between menand women are taken as exogenous and primitive...

This paper uses British panel data to investigate single women´s labour supply changes inresponse to three tax and benefit policy reforms that occurred in the 1990s. These reformschanged individuals´ work incentives and we use them to identify changes in labour supply.We find evidence of small...