The 2027 COLA estimate cooled — here’s what changed
Through spring, every revision pushed the 2027 cost-of-living adjustment higher — toward 3.9% and climbing. That trend has reversed. June inflation came in cooler, one prominent forecaster cut a full percentage point off her estimate in a single month, and the projections have converged into a tighter, lower band. Here’s what actually moved, what it means for FERS versus CSRS, and why none of it is settled yet.
1. The estimate went up — then came back down
Spring 2026 was a hot stretch, and the forecasts followed it upward. By May, projections for the 2027 COLA had climbed toward 3.9%, and the commentary was about how much bigger the raise was getting.
That has flipped. As of late July, the picture is lower and tighter: the Senior Citizens League holds at 3.8%, AARP projects about 3.6%, and analyst Mary Johnson cut hers to 3.7% — down from 4.7% just a month earlier. A full percentage point, erased in one revision.
The convergence is the real signal. Three independent forecasters landing within two-tenths of each other means the plausible range has narrowed considerably from where it sat in May.
2. What actually changed in the data
The reversal tracks the underlying readings. Consumer prices rose 4.2% over the year in May — the highest since April 2023 — and that spike is what drove estimates toward 3.9%. Then June cooled sharply: prices rose 3.5% over 12 months, with falling gasoline and energy costs pulling the index down. On a monthly basis the index actually declined.
Forecasters revising down after a single cool month may look jumpy, but energy is exactly the kind of volatile input that can swing a three-month average — and a three-month average is all this comes down to.
3. What each retirement system would actually get
CSRS annuitants and Social Security beneficiaries receive the full increase. Most eligible FERS retirees receive the increase minus one full percentage point whenever inflation runs above 3% — the diet COLA. Below, what today’s projections would actually pay out.
| If announced… | CSRS / Social Security | Most eligible FERS |
|---|---|---|
| 3.8% — TSCL | 3.8% | 2.8% |
| 3.7% — Johnson | 3.7% | 2.7% |
| 3.6% — AARP | 3.6% | 2.6% |
| 2.9% — if it cools further | 2.9% | 2.0% |
Watch that last row. Because the FERS formula pays a flat 2.0% anywhere in the 2–3% band, a COLA that slips just under 3% costs FERS retirees disproportionately — while every tenth above 3% passes straight through.
4. Why none of this counts yet
Here is the part that gets lost in every COLA news cycle: May and June don’t count. Neither did April. The official calculation uses only the July, August, and September 2026 CPI-W readings, averaged and compared against the same three months of 2025. Everything published before July is trend-watching, not arithmetic. The first reading that genuinely enters the formula hasn’t been released yet.
5. What happens next
Two of the three deciding months are still ahead. Treat every number now as directional — and if you’re budgeting on it, budget on the FERS column, not the headline.
6. FAQ
Did the 2027 COLA estimate go up or down?
Both, in sequence. Projections climbed through spring 2026 as inflation ran hot, reaching roughly 3.9% in May. They have since reversed. The Senior Citizens League now holds its estimate at 3.8%, AARP projects about 3.6%, and analyst Mary Johnson cut hers to 3.7% after previously forecasting 4.7% — a full percentage point reduction in one month. The cooldown tracks the underlying data: consumer prices rose 4.2% over the year in May, the highest reading since April 2023, then slowed to 3.5% in June as gasoline and energy costs fell.
Does the June inflation reading count toward the 2027 COLA?
No. Only the July, August, and September 2026 CPI-W readings enter the official calculation. The Social Security Administration averages those three months and compares the result to the average of the same three months in 2025. Every reading before July — including the June figure that prompted forecasters to revise downward — is useful for anticipating the trend but carries no direct weight in the formula. This is why estimates can still move materially between now and the announcement.
What would FERS retirees actually receive?
Less than the announced figure, in almost every scenario currently in play. Under the FERS diet COLA rules, an increase above 3% is passed through minus one full percentage point. So a 3.8% announced COLA becomes 2.8% for most eligible FERS retirees, 3.7% becomes 2.7%, and 3.6% becomes 2.6%. CSRS annuitants and Social Security beneficiaries receive the full amount. Most FERS retirees also receive no COLA at all before age 62 unless they retired on disability, are survivor annuitants, or fall under special provisions.
When does the 2027 COLA become official?
In mid-October 2026, after the September CPI-W data is published. The remaining schedule matters: the July 2026 CPI release is set for August 12, followed by the August data in September, and finally the September data in October. Only once all three of those readings are in can the average be computed and the official figure announced. Until then, every number in circulation — including the ones in this article — is a projection based on incomplete data.