The Largest COLA Increases in History
The top 10, ranked (official SSA series)
| Rank | Year determined | COLA | What drove it |
|---|---|---|---|
| 1 | 1980 | 14.3% | The peak of the Great Inflation: the second oil shock sent energy prices — and the CPI-W — surging at a double-digit pace. |
| 2 | 1981 | 11.2% | Inflation still near its peak, with the Federal Reserve holding interest rates at record levels to break it. |
| 3 | 1979 | 9.9% | The Iranian revolution triggered an oil-price shock; inflation accelerated all year. |
| 4 | 2022 | 8.7% | Post-pandemic inflation — supply shortages, energy prices and the Ukraine-war commodity shock. Determined in 2022, paid from January 2023; the largest in 41 years at the time. |
| 5 | 1975 | 8.0% | The first automatic COLA ever paid, after the mid-1970s inflation that followed the first oil shock. |
| 6 | 1982 | 7.4% | The last of the great-inflation adjustments — inflation was finally falling, but from a very high level. |
| 7 | 1978 | 6.5% | Late-1970s inflation building: food and energy prices rising and the dollar weakening. |
| 8 | 1976 | 6.4% | The second automatic COLA; inflation remained elevated after the 1973–75 recession. |
| 9 | 1977 | 5.9% | Inflation plateaued in the 5–6% range during the mid-1970s recovery. |
| 10 | 2021 | 5.9% | Reopening demand collided with supply-chain shortages and an energy-price rebound in 2021. Determined in 2021, paid from January 2022. |
Years are the SSA's determination years: from 1983 on, the adjustment is paid from the following January (so the 2022 row is the raise paid through 2023); the 1975–1982 adjustments were paid with June benefits of the same year. The full series is on the COLA history page.
Before 1975: increases by act of Congress
For the program's first four decades there was no formula. Congress raised benefits by statute when it chose to — in 1950, 1952, 1954, 1958, 1965, 1967, 1969, 1971 and 1974, among others — sometimes after years of inflation had eroded the checks. The 1972 amendments changed the system twice over: they raised benefits by 20% across the board immediately, and they created the automatic, CPI-linked COLA that has run ever since, first paid in 1975 at 8.0%. The political lesson of the list above is that the automatic formula has produced both the largest increases (when inflation demanded them) and the zeros (2009, 2010, 2015 determinations) that Congress, voting case by case, tended to avoid — see the legislative timeline.
Where 3.6% fits
The 2027 adjustment sits 17 places from the top of the all-time table — above the long-run average of roughly 2.6%, third-largest of the past decade, and less than half the size of the 2023 payment year's 8.7%. One other determination matches it exactly: 2011 also came in at 3.6%. To see what a run of these adjustments does to a single check over decades, use the cumulative COLA calculator.
Frequently asked questions
What was the largest Social Security COLA ever?
14.3%, determined in 1980 and paid that year at the peak of the Great Inflation. It remains far above any other adjustment — the runner-up is 11.2% in 1981, and the largest of the modern era is 8.7%, determined in 2022 and paid from January 2023.
Where does the 2027 COLA rank?
In the middle of the pack historically. The 3.6% determined in 2026 is larger than most adjustments — only 13 of the 52 annual determinations since 1975 were bigger — but it is well below the inflation-era spikes and below the 5.9% and 8.7% of the pandemic-inflation years.
Were there COLAs before 1975?
Not automatic ones. Before 1975, benefit increases required individual acts of Congress, which raised benefits in irregular steps — including a 20% across-the-board increase in the same 1972 amendments that created the automatic COLA. The first automatic adjustment, 8.0%, was paid in 1975.
Has the COLA ever been zero?
Yes — three times: the determinations of 2009, 2010 and 2015 produced 0.0% because the CPI-W did not rise over the measurement year. By law the COLA can never be negative.
Source: SSA, "Cost-Of-Living Adjustments" official series (data/cola_series.csv); legislative history summarized from SSA's published program history.