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Time-Inconsistency and Saving: Experimental Evidence from Low-Income Tax Filers

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  • Damon Jones
  • Aprajit Mahajan

Abstract

We conduct a field experiment designed to test theories of time-inconsistency, namely a "Beta-Delta" model of present bias. The experiment takes place in the context of a saving decision made by low-income tax filers who can deposit their income tax refund into an illiquid account. We find qualitative evidence consistent with present-biased preferences. The tradeoff between an earlier payment or a later one is much more skewed toward taking the early payment when the decision is made on the spot than when the decision is made in advance. We estimate a β and δ of 0.34 and 1.08 over an 8-month horizon, respectively, which translates into an annual discount rate of 164%.

Suggested Citation

  • Damon Jones & Aprajit Mahajan, 2015. "Time-Inconsistency and Saving: Experimental Evidence from Low-Income Tax Filers," NBER Working Papers 21272, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:21272
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    Cited by:

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    2. Erin Todd Bronchetti & Thomas S. Dee & David B. Hufman & Ellen Magenheim, 2013. "When a Nudge Isn’t Enough: Defaults and Saving Among Low-Income Tax Filers," National Tax Journal, National Tax Association;National Tax Journal, vol. 66(3), pages 609-634, September.
    3. Kang, Minwook, 2020. "Demand deposit contracts and bank runs with present biased preferences," Journal of Banking & Finance, Elsevier, vol. 119(C).
    4. Adam Leive, 2022. "Health Insurance Design Meets Saving Incentives: Consumer Responses to Complex Contracts," American Economic Journal: Applied Economics, American Economic Association, vol. 14(2), pages 200-227, April.
    5. Anett John, 2020. "When Commitment Fails: Evidence from a Field Experiment," Management Science, INFORMS, vol. 66(2), pages 503-529, February.
    6. Callen, Michael & Blumenstock, Joshua & Ghani, Tarek, 2016. "Mobile-izing Savings with Automatic Contributions: Experimental Evidence on Present Bias and Default Effects in Afghanistan," CEPR Discussion Papers 11400, C.E.P.R. Discussion Papers.
    7. Dmitry Taubinsky & Alex Rees-Jones, 2018. "Attention Variation and Welfare: Theory and Evidence from a Tax Salience Experiment," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 85(4), pages 2462-2496.
    8. Moser, Christian & Olea de Souza e Silva, Pedro, 2019. "Optimal Paternalistic Savings Policies," MPRA Paper 95383, University Library of Munich, Germany.

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    More about this item

    JEL classification:

    • D14 - Microeconomics - - Household Behavior - - - Household Saving; Personal Finance
    • D91 - Microeconomics - - Micro-Based Behavioral Economics - - - Role and Effects of Psychological, Emotional, Social, and Cognitive Factors on Decision Making
    • H24 - Public Economics - - Taxation, Subsidies, and Revenue - - - Personal Income and Other Nonbusiness Taxes and Subsidies

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