What is a COLA in a pension?
A Cost-of-Living Adjustment (COLA) is an automatic or discretionary annual increase applied to pension payments. Its purpose is to help retirees maintain purchasing power as inflation erodes the real value of fixed income over time.
COLA matters enormously over a long retirement. A $3,000/month pension with no COLA at age 60 has the purchasing power of about $1,661/month by age 80 if inflation averages 3% — a 45% reduction in real income over 20 years.
Types of COLA
Fixed COLA: A set percentage increase each year (e.g., 2% always). Simple and predictable. Examples: some Texas TRS retirees receive 2% fixed COLA.
CPI-linked COLA: Tied to the Consumer Price Index. Adjusts based on actual inflation — can be higher or lower than a fixed COLA in any given year. Military High-3 pensions and Social Security use CPI-linked COLA.
Capped CPI COLA: CPI-linked but capped at a maximum (e.g., 'CPI up to 3%'). Common in state teacher pensions. Protects retirees in high-inflation years while limiting the state's cost exposure.
Ad hoc / discretionary COLA: No automatic increase — the legislature votes on it periodically. Some states with underfunded pensions have suspended automatic COLA and moved to discretionary increases. Examples: Illinois suspended COLA for several years; New Jersey has had protracted COLA suspension battles.
How COLA compounds over a retirement
Starting pension: $3,000/month
| Years in Retirement | No COLA | 2% Fixed COLA | 3% CPI COLA |
|---|---|---|---|
| Year 5 | $3,000 | $3,313 | $3,478 |
| Year 10 | $3,000 | $3,658 | $4,032 |
| Year 20 | $3,000 | $4,458 | $5,418 |
| Year 30 | $3,000 | $5,432 | $7,281 |
The difference between no COLA and 3% COLA over 30 years is $4,281/month — a massive gap in quality of life for retirees who live into their 90s.
COLA by plan type
Military pensions: Full CPI-W COLA every year. One of the most generous COLA provisions of any retirement system.
Social Security: Full CPI-W COLA each year (was 8.7% in 2023, 3.2% in 2024, 2.5% in 2025).
Teacher pensions: Varies widely by state. California CalSTRS: CPI up to 2%. Texas TRS: No automatic COLA (periodic legislature-approved increases only). New York TRS: Partial CPI COLA. See the teacher pension calculator for your state's specific COLA provision.
Private-sector 401(k): No COLA — your income depends entirely on withdrawals from your account balance, which is subject to market risk.
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Frequently Asked Questions
Do all pensions have COLA?
No. COLA is not universal. Many state teacher pension plans have no automatic COLA — increases require legislative action, which may not happen in years when the state faces budget pressure. Military pensions and Social Security both provide automatic CPI-linked COLA. Check your specific plan's documents or our state-by-state teacher pension calculator to see whether your plan includes COLA.
How does military pension COLA work?
Military pensions receive an automatic annual Cost-of-Living Adjustment equal to the percentage change in the Consumer Price Index for Urban Wage Earners (CPI-W). The adjustment is announced each October for the following January. In 2024, the COLA was 3.2%. In 2025, it was 2.5%.
What happens to my pension if there's no COLA?
Without a COLA, your pension payment stays the same in nominal dollars but loses purchasing power over time. At 3% average inflation, a fixed pension loses half its real value every 23 years. Retirees in no-COLA states should plan supplemental savings (403b, Roth IRA, or taxable accounts) to offset inflation risk.