The Impact of Pensions on State Borrowing Costs

Alicia Munnell, Jean-Pierre Aubry and Laura Quinby

State and Local Pension Plans Briefs from Center for Retirement Research

Abstract: Municipal bond prices are tumbling and rates rising just as public borrowers face pressure to refinance deals cut during the financial crisis. At the same time, the funded status of public pension plans has declined, and states and localities wi ll have to come up with more money to meet future benefit payments. In the private sector, numerous studies have shown that pension underfunding affects corporate bond ratings. And Moody’s just announced that it would combine unfunded pension liabilitie s with outstanding bonds when evaluating a state’s leverage position. These developments raise the question of how future pension commitments affect today’s borrowing costs in the public sector. The brief proceeds as follows. The first section describes the municipal bond market. The second section describes the factors that traditionally have been considered in the bond rating process. The third section summarizes what other researchers have found regarding the relationship between pension commitments and borrowing costs in the private and public sectors. The fourth section presents a model for the period 2005-2009 that relates borrowing costs to factors generally considered by the rating age ncies, such as the state’s management, finances, economy, and debt structure. Pensions are a component of the debt structure, and the extent to which states make their Annual Required Contribution (ARC) has a statistically significant – albeit modest – impact on the cost of debt. A side finding is that the bond’s rating explains relatively little about the variation in interest cost, and the effect of pensions remains significant even including the bond’s rating in the equation. The final section conc ludes that while pension underfunding had only a small effect on borrowing costs in the 2005-2009 period when pension expenses were only 3 to 4 percent of state budgets, its impact could become more significant as the cost of pensions increases.

Pages: 17 pages
Date: 2011-02, Revised 2011-02
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