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What Determines the Saving Behavior of German Households? An Examination of Saving Motives and Saving Decisions

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  • Schunk, Daniel

    (University of Zürich Institute for Empirical Research in Economics)

Abstract
Many motives for saving a portion of one’s income co-exist and their relative importance changes over the life-cycle. However, most existing work focuses on only one of those motives and makes simplifying assumptions about the other motives so that they can be relegated to the background. All the more it is important to investigate heterogeneity in saving behavior in the presence of various co-existing saving motives. This paper is concerned with linking heterogeneity in German households’ savings decisions to four coexisting saving motives. First, I find that the importance that households attach to the saving motives is related to how much households save at different life stages. Second, I classify the saver type of the households based on whether they engage in regular savings plans, or rather save irregularly and without a savings plan and I find that saving motives are related to the saver type of the household. The results show that heterogeneity in saving behavior along two dimensions – with respect to the saving rate and the saver type – is systematically related to the importance that households attach to different saving motives. This suggests that policy reforms that change the importance of certain saving motives in the eyes of private households might alter household saving behavior in various ways.

Suggested Citation

  • Schunk, Daniel, 2007. "What Determines the Saving Behavior of German Households? An Examination of Saving Motives and Saving Decisions," Sonderforschungsbereich 504 Publications 07-10, Sonderforschungsbereich 504, Universität Mannheim;Sonderforschungsbereich 504, University of Mannheim.
  • Handle: RePEc:xrs:sfbmaa:07-10
    Note: Financial support from the Deutsche Forschungsgemeinschaft, SFB 504, at the University of Mannheim, is gratefully acknowledged.
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    1. Moriizumi, Yoko, 2003. "Targeted saving by renters for housing purchase in Japan," Journal of Urban Economics, Elsevier, vol. 53(3), pages 494-509, May.
    2. Lothar Essig & Joachim K. Winter, 2009. "Item Non-Response to Financial Questions in Household Surveys: An Experimental Study of Interviewer and Mode Effects," Fiscal Studies, Institute for Fiscal Studies, vol. 30(Special I), pages 367-390, December.
    3. Patricia Sourdin, 2005. "Pension Contribution as a Commitment Device: Evidence of Sophistication among Time-inconsistent Households," School of Economics and Public Policy Working Papers 2005-17, University of Adelaide, School of Economics and Public Policy.
    4. Mark Kazarosian, 1997. "Precautionary Savings-A Panel Study," The Review of Economics and Statistics, MIT Press, vol. 79(2), pages 241-247, May.
    5. John Ameriks & Andrew Caplin & John Leahy, 2003. "Wealth Accumulation and the Propensity to Plan," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 118(3), pages 1007-1047.
    6. McDonald, James B. & Xu, Yexiao J., 1996. "A comparison of semi-parametric and partially adaptive estimators of the censored regression model with possibly skewed and leptokurtic error distributions," Economics Letters, Elsevier, vol. 51(2), pages 153-159, May.
    7. Paarsch, Harry J., 1984. "A Monte Carlo comparison of estimators for censored regression models," Journal of Econometrics, Elsevier, vol. 24(1-2), pages 197-213.
    8. Rob Alessie & Annamaria Lusardi & Trea Aldershof, 1997. "Income And Wealth Over The Life Cycle Evidence From Panel Data," Review of Income and Wealth, International Association for Research in Income and Wealth, vol. 43(1), pages 1-32, March.
    9. Milton Friedman, 1957. "Introduction to "A Theory of the Consumption Function"," NBER Chapters, in: A Theory of the Consumption Function, pages 1-6, National Bureau of Economic Research, Inc.
    10. Bartzsch Nikolaus, 2008. "Precautionary Saving and Income Uncertainty in Germany – New Evidence from Microdata," Journal of Economics and Statistics (Jahrbuecher fuer Nationaloekonomie und Statistik), De Gruyter, vol. 228(1), pages 5-24, February.
    11. Davies, James B, 1981. "Uncertain Lifetime, Consumption, and Dissaving in Retirement," Journal of Political Economy, University of Chicago Press, vol. 89(3), pages 561-577, June.
    12. Hausman, Jerry & McFadden, Daniel, 1984. "Specification Tests for the Multinomial Logit Model," Econometrica, Econometric Society, vol. 52(5), pages 1219-1240, September.
    13. Pierre-Olivier Gourinchas & Jonathan A. Parker, 2002. "Consumption Over the Life Cycle," Econometrica, Econometric Society, vol. 70(1), pages 47-89, January.
    14. Leung, Siu Fai, 1994. "Uncertain Lifetime, the Theory of the Consumer, and the Life Cycle Hypothesis," Econometrica, Econometric Society, vol. 62(5), pages 1233-1239, September.
    15. Chiuri, Maria Concetta & Jappelli, Tullio, 2003. "Financial market imperfections and home ownership: A comparative study," European Economic Review, Elsevier, vol. 47(5), pages 857-875, October.
    16. Rigotti, L. & Ryan, M. & Vaithianathan, R., 2001. "Entrepreneurial Innovation," Discussion Paper 2001-21, Tilburg University, Center for Economic Research.
    17. Guiso, Luigi & Jappelli, Tullio & Terlizzese, Daniele, 1994. "Housing finance arrangements, intergenerational transfers and consumption : The Italian experience," Economic Modelling, Elsevier, vol. 11(2), pages 145-155, April.
    18. Guiso, Luigi & Jappelli, Tullio & Terlizzese, Daniele, 1992. "Earnings uncertainty and precautionary saving," Journal of Monetary Economics, Elsevier, vol. 30(2), pages 307-337, November.
    19. Christopher D. Carroll, 1997. "Buffer-Stock Saving and the Life Cycle/Permanent Income Hypothesis," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 112(1), pages 1-55.
    20. Christopher D. Carroll & Andrew A. Samwick, 1998. "How Important Is Precautionary Saving?," The Review of Economics and Statistics, MIT Press, vol. 80(3), pages 410-419, August.
    21. Menahem E. Yaari, 1965. "Uncertain Lifetime, Life Insurance, and the Theory of the Consumer," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 32(2), pages 137-150.
    22. Christopher D. Carroll, 1992. "The Buffer-Stock Theory of Saving: Some Macroeconomic Evidence," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 23(2), pages 61-156.
    23. Börsch-Supan, Axel H. & Heiss, Florian & Winter, Joachim, . "Akzeptanzprobleme bei Rentenreformen: Wie die Bevölkerung überzeugt werden kann," Monographs in Economics, University of Munich, Department of Economics, number 20198, November.
    24. R Alessie & A Kapteyn, 2001. "New data for understanding saving," Oxford Review of Economic Policy, Oxford University Press and Oxford Review of Economic Policy Limited, vol. 17(1), pages 55-69, Spring.
    25. Börsch-Supan, Axel & Reil-Held, Anette & Rodepeter, Ralf & Schnabel, Reinhold & Winter, Joachim, 2000. "Household Savings in Germany," Discussion Papers 577, Institut fuer Volkswirtschaftslehre und Statistik, Abteilung fuer Volkswirtschaftslehre.
    26. Kessler, Denis & Masson, Andre, 1989. "Bequest and Wealth Accumulation: Are Some Pieces of the Puzzle Missing?," Journal of Economic Perspectives, American Economic Association, vol. 3(3), pages 141-152, Summer.
    27. Powell, James L., 1984. "Least absolute deviations estimation for the censored regression model," Journal of Econometrics, Elsevier, vol. 25(3), pages 303-325, July.
    28. Martin Browning & Annamaria Lusardi, 1996. "Household Saving: Micro Theories and Micro Facts," Journal of Economic Literature, American Economic Association, vol. 34(4), pages 1797-1855, December.
    29. Erik Hurst & Arthur Kennickell & Annamaria Lusardi & Francisco Torralba, 2005. "Precautionary Savings and the Importance of Business Owners," NBER Working Papers 11731, National Bureau of Economic Research, Inc.
    30. Carroll, Christopher D. & Samwick, Andrew A., 1997. "The nature of precautionary wealth," Journal of Monetary Economics, Elsevier, vol. 40(1), pages 41-71, September.
    31. Hayashi, Fumio & Ito, Takatoshi & Slemrod, Joel, 1988. "Housing finance imperfections, taxation, and private saving: A comparative simulation analysis of the United States and Japan," Journal of the Japanese and International Economies, Elsevier, vol. 2(3), pages 215-238, September.
    32. Menchik, Paul L & David, Martin, 1983. "Income Distribution, Lifetime Savings, and Bequests," American Economic Review, American Economic Association, vol. 73(4), pages 672-690, September.
    33. McFadden, Daniel, 1987. "Regression-based specification tests for the multinomial logit model," Journal of Econometrics, Elsevier, vol. 34(1-2), pages 63-82.
    34. Anette Reil-Held, 1999. "Bequests and Aggregate Wealth Accumulation in Germany," The Geneva Papers on Risk and Insurance - Issues and Practice, Palgrave Macmillan;The Geneva Association, vol. 24(1), pages 50-63, January.
    35. Annamarie Lusardi & Olivia S. Mitchell, 2005. "Financial Literacy and Planning: Implications for Retirement Wellbeing," Working Papers wp108, University of Michigan, Michigan Retirement Research Center.
    36. Chesher, Andrew & Irish, Margaret, 1987. "Residual analysis in the grouped and censored normal linear model," Journal of Econometrics, Elsevier, vol. 34(1-2), pages 33-61.
    37. Clark, Gordon L. & Munnell, Alicia H. & Orszag, J. Michael (ed.), 2006. "The Oxford Handbook of Pensions and Retirement Income," OUP Catalogue, Oxford University Press, number 9780199272464.
    38. Artle, Roland & Varaiya, Pravin, 1978. "Life cycle consumption and homeownership," Journal of Economic Theory, Elsevier, vol. 18(1), pages 38-58, June.
    39. Hurd, Michael D, 1990. "Research on the Elderly: Economic Status, Retirement, and Consumption and Saving," Journal of Economic Literature, American Economic Association, vol. 28(2), pages 565-637, June.
    40. Alessie, Rob & Lusardi, Annamaria, 1997. "Saving and income smoothing: Evidence from panel data," European Economic Review, Elsevier, vol. 41(7), pages 1251-1279, July.
    41. Train,Kenneth E., 2009. "Discrete Choice Methods with Simulation," Cambridge Books, Cambridge University Press, number 9780521747387, September.
    42. Skinner, Jonathan, 1988. "Risky income, life cycle consumption, and precautionary savings," Journal of Monetary Economics, Elsevier, vol. 22(2), pages 237-255, September.
    43. Horioka, Charles Yuji & Watanabe, Wako, 1997. "Why Do People Save? A Micro-Analysis of Motives for Household Saving in Japan," Economic Journal, Royal Economic Society, vol. 107(442), pages 537-552, May.
    44. Börsch-Supan, Axel & Reil-Held, Anette & Rodepeter, Ralf & Schnabel, Reinhold & Winter, Joachim, 1999. "Ersparnisbildung in Deutschland : Meßkonzepte und Ergebnisse auf Basis der EVS," Papers 99-02, Sonderforschungsbreich 504.
    45. Essig, Lothar, 2005. "Methodological aspects of the SAVE data set," Papers 05-17, Sonderforschungsbreich 504.
    46. Kotlikoff, Laurence J & Summers, Lawrence H, 1981. "The Role of Intergenerational Transfers in Aggregate Capital Accumulation," Journal of Political Economy, University of Chicago Press, vol. 89(4), pages 706-732, August.
    47. Binswanger, Johannes, 2007. "Risk management of pensions from the perspective of loss aversion," Journal of Public Economics, Elsevier, vol. 91(3-4), pages 641-667, April.
    48. Weil, David N., 1991. "What determines savings? : A review essay," Journal of Monetary Economics, Elsevier, vol. 28(1), pages 161-170, August.
    49. Kennickell, Arthur & Lusardi, Annamaria, 2005. "Disentangling the importance of the precautionary saving motive," CFS Working Paper Series 2006/15, Center for Financial Studies (CFS).
    50. Buchinsky, Moshe, 1994. "Changes in the U.S. Wage Structure 1963-1987: Application of Quantile Regression," Econometrica, Econometric Society, vol. 62(2), pages 405-458, March.
    51. McFadden, Daniel, 1999. "Rationality for Economists?," Journal of Risk and Uncertainty, Springer, vol. 19(1-3), pages 73-105, December.
    52. Michael G. Palumbo, 1999. "Uncertain Medical Expenses and Precautionary Saving Near the End of the Life Cycle," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 66(2), pages 395-421.
    53. Annamaria Lusardi, 2000. "Precautionary Saving and the Accumulation of Wealth," Working Papers 0012, Harris School of Public Policy Studies, University of Chicago.
    54. Milton Friedman, 1957. "A Theory of the Consumption Function," NBER Books, National Bureau of Economic Research, Inc, number frie57-1.
    55. Hurd, Michael D, 1987. "Savings of the Elderly and Desired Bequests," American Economic Review, American Economic Association, vol. 77(3), pages 298-312, June.
    56. Kotlikoff, Laurence J, 1988. "Intergenerational Transfers and Savings," Journal of Economic Perspectives, American Economic Association, vol. 2(2), pages 41-58, Spring.
    57. Caballero, Ricardo J, 1991. "Earnings Uncertainty and Aggregate Wealth Accumulation," American Economic Review, American Economic Association, vol. 81(4), pages 859-871, September.
    58. Puri, Manju & Robinson, David T., 2007. "Optimism and economic choice," Journal of Financial Economics, Elsevier, vol. 86(1), pages 71-99, October.
    59. Anette Reil-Held, 2006. "Crowding out or crowding in? Public and private transfers in Germany [Substituts ou compléments? Transferts publics et privés en Allemagne]," European Journal of Population, Springer;European Association for Population Studies, vol. 22(3), pages 263-280, September.
    60. Alessie, Rob & Lusardi, Annamaria & Kapteyn, Arie, 1999. "Saving after retirement: evidence from three different surveys," Labour Economics, Elsevier, vol. 6(2), pages 277-310, June.
    61. Laurence J. Kotlikoff (ed.), 2001. "Essays on Saving, Bequests, Altruism, and Life-Cycle Planning," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262112620, April.
    62. Lusardi, Annamaria, 1998. "On the Importance of the Precautionary Saving Motive," American Economic Review, American Economic Association, vol. 88(2), pages 449-453, May.
    63. Lothar Essig, 2005. "Methodological aspects of the SAVE data set," MEA discussion paper series 05080, Munich Center for the Economics of Aging (MEA) at the Max Planck Institute for Social Law and Social Policy.
    64. Hurd, Michael, 1979. "Estimation in truncated samples when there is heteroscedasticity," Journal of Econometrics, Elsevier, vol. 11(2-3), pages 247-258.
    65. Mirer, Thad W, 1979. "The Wealth-Age Relation among the Aged," American Economic Review, American Economic Association, vol. 69(3), pages 435-443, June.
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    Cited by:

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    2. Bartzsch Nikolaus, 2008. "Precautionary Saving and Income Uncertainty in Germany – New Evidence from Microdata," Journal of Economics and Statistics (Jahrbuecher fuer Nationaloekonomie und Statistik), De Gruyter, vol. 228(1), pages 5-24, February.
    3. Bettina Lamla, 2013. "Family background and the decision to provide for old age: a siblings approach," Empirica, Springer;Austrian Institute for Economic Research;Austrian Economic Association, vol. 40(3), pages 483-504, August.
    4. Hans Peter Grüner, 2009. "Kapitalbeteiligung von Mitarbeitern. Eine Bewertung der jüngsten Vorschläge," Perspektiven der Wirtschaftspolitik, Verein für Socialpolitik, vol. 10(2), pages 175-188, May.
    5. Busl, Claudia & Iliewa, Zwetelina & Jokisch, Sabine & Kappler, Marcus & Roscher, Thomas & Schindler, Felix & Schleer, Frauke, 2012. "Endbericht an das Bundesministerium der Finanzen zum Forschungsauftrag fe 11/11: "Sparen und Investieren vor dem Hintergrund des demografischen Wandels"," ZEW Expertises, ZEW - Leibniz Centre for European Economic Research, number 110554.
    6. Konrad C. Schäfer, 2016. "The Influence of Personality Traits on Private Retirement Savings in Germany," SOEPpapers on Multidisciplinary Panel Data Research 867, DIW Berlin, The German Socio-Economic Panel (SOEP).
    7. Mathias Sommer, 2007. "Savings motives and the effectiveness of tax incentives – an analysis based on the demand for life insurance in Germany," MEA discussion paper series 07125, Munich Center for the Economics of Aging (MEA) at the Max Planck Institute for Social Law and Social Policy.
    8. Julia Le Blanc & Alessandro Porpiglia & Federica Teppa & Junyi Zhu & Michael Ziegelmeyer, 2014. "Household saving behaviour and credit constraints in the euro area," BCL working papers 93, Central Bank of Luxembourg.
    9. Dolores Moreno-Herrero & Manuel Salas-Velasco & José Sánchez-Campillo, 2017. "Individual Pension Plans in Spain: How Expected Change in Future Income and Liquidity Constraints Shape the Behavior of Households," Journal of Family and Economic Issues, Springer, vol. 38(4), pages 596-613, December.
    10. Zeynep Copur & Michael S. Gutter, 2019. "Economic, Sociological, and Psychological Factors of the Saving Behavior: Turkey Case," Journal of Family and Economic Issues, Springer, vol. 40(2), pages 305-322, June.
    11. Dummann, Kathrin, 2008. "Retirement saving and attitude towards financial intermediaries: Evidence for Germany," Thuenen-Series of Applied Economic Theory 99, University of Rostock, Institute of Economics.

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    JEL classification:

    • E21 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Consumption; Saving; Wealth
    • D91 - Microeconomics - - Micro-Based Behavioral Economics - - - Role and Effects of Psychological, Emotional, Social, and Cognitive Factors on Decision Making
    • D12 - Microeconomics - - Household Behavior - - - Consumer Economics: Empirical Analysis

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