The first metric is net amortization, which measures whether total contributions to a public retirement system are sufficient to reduce unfunded liabilities if all actuarial assumptions—primarily investment expectations— are met for that year. Plans with positive net amortization are expected to retire pension debt over time and therefore improve their funded status.
Pew reviewed the three-year average for net amortization. This figure provides a more complete picture of contribution adequacy given the impact of volatile investment performance and demographic experience on plan assets. In total, the 33 cities in Pew’s analysis achieved positive amortization (104% of the benchmark) from 2015 to 2017. However, individually, more than half of the cities had negative amortization. Notably, Chicago and Dallas contributed less than 50% of the benchmark. In contrast, New Orleans contributed 174%, or $132 million, which was well over the city’s benchmark over the time period. For cities that are poorly funded, net amortization can indicate that they are on a path toward sustainably funding their pension plans. For example, New Orleans and Philadelphia have both increased their contributions significantly in recent years to achieve positive net amortization and decrease unfunded liabilities. On the other hand, better funded cities that fell short of the benchmark may face growing pension debt absent a policy change or adjustment.
Author(s): David Draine
Publication Date: 18 May 2021
Publication Site: Pew Charitable Trusts