Why Boomers Claiming Today Lock In COLA Compounding That Future Retirees May Miss

The advantage hiding in a first benefit check

A 67-year-old filing for Social Security this spring receives her first check at $2,500 a month. By claiming under today’s rules, she has locked in a cost-of-living adjustment (COLA) formula that compounds in her favor for life, whether she realizes it or not.

The 2026 cost-of-living adjustment came in at 2.8%, applied to roughly 71 million beneficiaries in January. Every year forward, her benefit adjusts by whatever inflation methodology Congress has on the books. Over 25 years, that compounding can be worth six figures.

This question appears repeatedly in retirement forums: should someone in their early 60s claim now to lock in benefits before lawmakers tighten the formula? The instinct that today’s COLA rules are worth something concrete is correct. The conclusion that you should rush to file is usually wrong.

What COLA compounding actually does to a monthly check

Social Security uses CPI-W, the inflation index for urban wage earners. Each year’s COLA stacks on top of the prior year’s adjusted benefit.

Take a $2,500 starting benefit. Apply a 2.5% average COLA for 25 years and that benefit grows to roughly $4,635 a month by age 92. The same $2,500 with a 2.0% average COLA reaches only about $4,103. Across a long retirement, the difference adds up to roughly $130,000 in lifetime payments.

Chained CPI has historically run below CPI-W, meaning a formula switch would erode purchasing power with each passing year. That proposal has been floated repeatedly on Capitol Hill, and a change would almost certainly apply prospectively, with proposals aimed at future claimants more aggressively than people already drawing checks. Congress grandfathered current beneficiaries during the 1983 Social Security overhaul, phasing changes in for younger workers. That precedent is the strongest pattern we have, even if it falls short of an ironclad guarantee.

The bigger lever is still claiming age

COLA protection is real, and it is smaller than the math on when you file.

Claiming at 62 instead of full retirement age (FRA) of 67 cuts your benefit by about 30% for life. On a $2,500 check, that is $750 a month gone before any COLA stacks on top. Waiting from 67 to 70 adds 8% per year in delayed retirement credits, worth 24% more per month. Those numbers swamp any plausible COLA reform. Treat any cost-of-living adjustment protection as a tailwind on top of whatever claiming age makes sense for your health, savings, and spousal situation.

How this fits with the rest of retirement income

For most retirees, Social Security is the only major income stream that adjusts annually for inflation. Pensions usually do not. Private annuities only adjust if you pay extra for an inflation rider, which cuts the starting payout. A bond ladder helps only if you keep rolling at higher rates, and the 10-year Treasury near 4.4% locks in a fixed coupon for a decade.

Social Security tends to grow as a share of household income later in retirement. Spend from the IRA early, let the COLA-protected check compound, and real spending power holds up better at 85 than most retirement projections suggest. Total Social Security benefits paid jumped from $1,427.6 billion in early 2024 to $1,631.2 billion in Q1 2026, driven largely by COLA stacking on a growing beneficiary base.

What to carry into your decision

1. Price your future COLA stream as the most valuable inflation hedge you own. When comparing private annuities, weigh the inflation-adjusted version against your Social Security expectations. The level payout looks generous now and feels small at 85.
2. Track reform proposals without rearranging your claiming plan around them. If chained CPI returns to the legislative agenda, the historical pattern suggests current claimants are protected and future ones absorb the change. That’s a reason to pay attention while keeping your claiming plan focused on the delayed retirement credits that can add thousands of dollars a year to your benefit.

Every situation has its own variables, including health, spousal benefits, and how other income gets taxed alongside your check. Run your own numbers before locking in anything you cannot reverse.