This chapter presents the estimates and measures of trust fund financial adequacy for the short-range period (2025 through 2034) first, followed by estimates and measures of
actuarial status for the long-range period (2025 through 2099). Summary measures are also provided for trust fund status over the infinite horizon. As described in chapter
II of this report, these estimates depend upon a broad set of
demographic, economic, and programmatic factors. This chapter presents estimates under three sets of assumptions to show a wide range of possible outcomes, because assumptions related to these factors are subject to uncertainty. The intermediate set of assumptions, designated as
alternative II, reflects the Trustees’ best estimate of future experience; the low-cost
alternative I is significantly more optimistic and the high-cost
alternative III is significantly more pessimistic for the trust funds’ future financial outlook. The tables of this report show the intermediate estimates first, followed by the low-cost and high-cost estimates. Chapter
V describes these three sets of assumptions, along with the actuarial methods used to produce the estimates. Appendix
D and appendix
E present two additional methods to illustrate the uncertainty of the projections. Appendix
D presents sensitivity analyses of the effects of variation in individual factor s and appendix
E presents probability distributions generated by a stochastic model.
The Trustees consider the trust funds to be solvent at any point in time if the funds can pay scheduled benefits in full on a timely basis. A standard measure for assessing solvency is the “
trust fund ratio,” which is the
reserves in a fund at the beginning of a year (not including
advance tax transfers) expressed as a percentage of the cost during the year. A positive trust fund ratio indicates that the trust fund was solvent at the end of the prior year. The trust fund ratio represents the proportion of a year’s cost which the reserves available at the beginning of that year can cover. The Trustees assume that a trust fund ratio of 100 percent of annual program cost provides a reasonable “contingency reserve.” Maintaining a reasonable contingency reserve is important because the trust funds do not have borrowing authority. After reserves are depleted, the trust funds would be unable to pay scheduled benefits in full on a timely basis if annual revenue were less than annual cost. Unexpected events, such as severe economic recessions, can quickly diminish reserves. In such cases, a reasonable contingency reserve can maintain the ability to pay scheduled benefits while giving lawmakers time to address possible changes to the program.
The test of short-range financial adequacy applies to the OASI and DI Trust Funds individually and combined on a hypothetical basis.
1 If the estimated trust fund ratio is at least 100 percent at the beginning of the projection period, the test requires that it remain at or above 100 percent throughout the 10-year period. If the ratio is initially less than 100 percent, then it must reach at least 100 percent within 5 years (without reserve depletion at any time during this period) and then remain at or above 100 percent throughout the remainder of the 10-year period. This test is applied using the estimates based on the intermediate assumptions. If either trust fund fails this test, then program solvency in the next 10 years is in question, and lawmakers should take prompt action to improve short-range financial adequacy.
This subsection presents projections, based on the assumptions described in chapter V, of the operations and financial status of the OASI Trust Fund for the period 2025 through 2034. These estimates assume that there are no further changes in the statutory provisions and regulations under which the OASDI program currently operates beyond the changes since last year’s report indicated in section
III.B.
2
Estimates of the OASI Trust Fund operations presented in table IV.A1 indicate that the reserves of the OASI Trust Fund are projected to decrease in years 2025 through 2034 under all three sets of assumptions. Under the low-cost assumptions, reserves remain positive through the end of the short-range period, but under the intermediate and high-cost assumptions, reserves become depleted in the first quarter of 2033 and the fourth quarter of 2031, respectively. Trust fund ratios are projected to decline throughout the 10-year projection period under all three sets of assumptions. See figure
IV.A1 for an illustration of these results.
The estimated income shown in table IV.A1 increases annually under each set of assumptions throughout the short-range projection period, with the exception of a small decrease in 2025 for the high-cost alternative. The estimated increases in income result primarily from the projected increases in OASDI
taxable payroll. Employment increases in years 2025 through 2034 for all three alternatives, with the exception of small decreases in covered employment in 2025 and 2026 for the high-cost alternative: the number of covered workers increases under alternatives I, II, and III from 184 million during calendar year 2024 to about 196 million, 191 million, and 187 million, respectively, in 2034.
3 The total annual amount of taxable payroll increases in years 2025 through 2034 for each alternative. Total taxable payroll increases from $10,124 billion in 2024 to $18,416 billion, $15,594 billion, and $13,258 billion in 2034, under alternatives I, II, and III, respectively.
4 These increases in taxable payroll are due primarily to: (1) projected increases in employment levels as the working-age
population increases; (2) trend increases in average earnings in
covered employment (reflecting both real growth and price inflation); and (3) increases in the
contribution and benefit base under the automatic-adjustment provisions.
Rising OASI cost through 2034 reflects automatic benefit increases each year after initial benefit eligibility and increases each year for those becoming newly eligible based on rising average earnings levels, as well as the upward trend in the number of beneficiaries. The steady growth in the number of OASI beneficiaries in the past and the expected future growth result both from the increase in the aged population and from the increase in the proportion of the population that is insured for benefits.
Table IV.A2 shows the projected operations and financial status of the DI Trust Fund during calendar years 2025 through 2034 under the three sets of assumptions, together with values for actual experience during 2020 through 2024. For 2024, non-interest income was higher than DI cost. Non-interest income increases generally throughout the short-range projection period under each alternative, due to most of the same factors described previously for the OASI Trust Fund beginning on page
47. DI cost grows over the short-range period under each alternative. Under all three alternatives, income remains higher than cost through 2034, and
as a result, DI reserves are higher at the end of 2034 compared to the level at the end of 2024.
For the future, DI cost is projected to increase in part due to increases in average benefit levels resulting from: (1) automatic benefit increases and (2) projected increases in the amounts of average monthly earnings on which benefits are based. Future changes in DI cost also reflect changes in the number of DI beneficiaries in current-payment status. In 2024, the number of DI beneficiaries in current-payment status continued to decline, as it has over the prior ten years. Under the intermediate assumptions, the number of DI beneficiaries is projected to begin to increase in 2025, reaching a level of about 9 million at the end of 2034. The rate of increase after 2024 is much slower than was experienced on average from 1990 to 2010, when the population with the highest disability prevalence rates was growing rapidly due to the aging of the baby-boom generation. See section
V.C.5 for further details.
Table IV.A3 shows the projected operations and status of the combined OASI and DI Trust Funds for calendar years 2025 through 2034 under the three alternatives, together with actual experience in 2020 through 2024. Income and cost for the OASI Trust Fund represent over 80 percent of the corresponding amounts for the combined OASI and DI Trust Funds. Under the low-cost assumptions, the combined OASI and DI Trust Funds would have sufficient financial resources to pay all scheduled benefits through the end of the short-range period, although it is important to note that under current law, one trust fund cannot share financial resources with another trust fund. Under the intermediate and high-cost assumptions, combined OASI and DI Trust Fund reserves become depleted in the third quarter of 2034 and the first quarter of 2032, respectively.
Table IV.A4 presents an analysis of the factors underlying the changes in the intermediate estimates over the short-range projection period for the OASI, DI, and the combined funds from last year’s report to this report.
Table IV.A4 also shows corresponding estimates of the factors underlying the changes in the financial projections for the DI Trust Fund and for the combined OASI and DI Trust Funds. In this report, the OASDI trust fund ratio for 2034 is theoretical because the OASI Trust Fund reserves become depleted during 2033. The 32-percentage-point increase in the DI trust fund ratio from the beginning of 2033 in last year’s report to the beginning of 2034 in this year’s report is the net effect of increases and decreases from the factors described above for the OASI Trust Fund, combined with other changes that are significant for DI but not OASI. The decrease of 14 percentage points due to legislation and regulations for DI is primarily caused by the recent regulation which decreases the number of years used in the consideration of past relevant work when making a disability determination. The large increase of 21 percentage points due to programmatic data and assumptions reflects changes in several factors relevant to the DI beneficiary projections, including actual award and termination experience in 2024.
