According to the Social Security Trustees, who oversee the program and report on its financial condition, program costs are expected to exceed non-interest income from 2010 onward. However, due to interest (earned at a 3.6% rate in 2014) the program will run an overall surplus that adds to the fund through the end of 2019. Under current law, the securities in the Trust Fund represent a legal obligation the government must honor when program revenues are no longer sufficient to fully fund benefit payments. However, when the Trust Fund is used to cover program deficits in a given year, the Trust Fund balance is reduced. By 2034, the Trust Fund is expected to be exhausted. Thereafter, payroll taxes are projected to only cover approximately 79% of program obligations.[7]

There have been various proposals to address this shortfall, including reducing government expenditures, such as by raising the retirement age; tax increases; and borrowing.