%0 Report %A Barbanchon, Thomas Le %T Taxes Today, Benefits Tomorrow %D 2025 %8 2025 Jan %I Institute of Labor Economics (IZA) %C Bonn %7 IZA Discussion Paper %N 17600 %U https://www.iza.org/publications/dp17600 %X This paper tests whether partially unemployed workers value future preserved benefits when they bunch at the kink of the unemployment insurance benefit-withdrawal schedule. I extend the bunching formula of Saez (2010) to a dynamic setting that accounts for the value of future benefits tied to taxation. This yields new tests of tax-benefit linkage based on bunching heterogeneity. I verify in quasi-experiments that UI extension programs that decrease the value of future benefits lead to more bunching and to lower labor supply. Last, a quantification exercise of the dynamic bunching formula provides extra support for a strong tax-benefit linkage. %K tax-benefit linkage %K bunching %K unemployment insurance