This study assesses the effect of tax withholding on pre-retirement withdrawals from a tax-preferred savings account in Canada. Using a large sample of administrative tax records and exploiting inter-provincial variation in tax withholding rates over time in the identification, the withdrawal elasticity to the net-of-tax withholding rate is estimated to be approximately 0.40 for many prime-aged savers. Hence, tax withholding discourages pre-retirement savings withdrawals and serves as a de facto savings commitment device. This finding is not well-explained by rational agency, and theories of present-biased time preferences and fiscal illusion are shown to be a better explanation of such behavior.
