Valuing Government Obligations When Markets are Incomplete

44 Pages Posted: 16 Dec 2017

See all articles by Jasmina Hasanhodzic

Jasmina Hasanhodzic

Babson College - Finance Division

Laurence J. Kotlikoff

Boston University - Department of Economics; National Bureau of Economic Research (NBER); Gaidar Institute for Economic Policy

Date Written: December 2017

Abstract

Determining how to value net government obligations is a long-standing and fundamental question in public finance. Its answer is critical to cost-benefit analysis, the assessment of fiscal sustainability, generational accounting, and other economic issues. This paper posits and simulates a ten-period overlapping generations model with aggregate shocks to price safe and risky government net obligations, including options. Agents can't trade with future generations to hedge the model's productivity and depreciation shocks. Nor can they invest in anything other than one-period bonds and risky capital. Our results are surprising. We find that the pricing of short- as well as long-dated riskless obligations is anchored to the prevailing one-period risk-free return. More surprising, the prices of obligations whose values are proportional to the prevailing wage (e.g., Social Security benefits under a pay-go system with a fixed tax rate) are essentially identical to those of safe obligations, i.e., there is little risk adjustment. This is true notwithstanding our assumption of very large macro shocks. In contrast, government obligations provided in the form of options entail significant risk adjustment. We also show that the value of obligations to unborn generations depends on the nature of the compensating variation. Another finding is that the one-period bond market matters, but less than expected, to valuing obligations. Finally, our model lets us test the ability of arbitrage pricing to get prices right. Surprisingly, with the right specification, it comes close. Although highly stylized, our model suggests the potential of detailed, largescale CGE OLG models to price government obligations as well as non-marketed private securities in the presence of incomplete markets and macro shocks.

Suggested Citation

Hasanhodzic, Jasmina and Kotlikoff, Laurence J., Valuing Government Obligations When Markets are Incomplete (December 2017). NBER Working Paper No. w24092. Available at SSRN: https://ssrn.com/abstract=3087014

Jasmina Hasanhodzic (Contact Author)

Babson College - Finance Division ( email )

Babson Park, MA 02457-0310
United States

Laurence J. Kotlikoff

Boston University - Department of Economics ( email )

270 Bay State Road
Boston, MA 02215
United States
617-353-4002 (Phone)
617-353-4449 (Fax)

National Bureau of Economic Research (NBER)

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

Gaidar Institute for Economic Policy

Gazetny per. 5-3
Moscow, 125993
Russia

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