Based on analysis by Daniel Ammerman, summarized from Josh Scandlen’s breakdown

The Conventional Wisdom

The standard Social Security claiming advice is straightforward:

Claiming Age	Annual Benefit	Lifetime Advantage (if you live to 83)
62	~$24,000/year	—
70	~$53,000/year	+$183,000 more than claiming at 62

The rule of thumb: if you expect to live past ~80, delay to 70. If not, claim earlier.

The Hidden Flaw: COLA Lag

Social Security COLAs don’t actually keep up with inflation — even when the COLA percentage matches CPI.

Here’s why: COLAs are paid retroactively. You receive one annual raise in January to compensate for the previous year’s inflation. But you’ve been paying higher prices every single day throughout that year.

How the Math Works

Imagine you start the year with $100,000 in Social Security benefits and inflation runs at 3%.

Prices rise gradually all year — roughly 0.25% per month
You’re spending at those higher prices in real-time
By December 20th, your $100,000 of purchasing power is effectively exhausted
You’re short 11 days before your COLA adjustment kicks in on January 1st
Your real purchasing power was only 97.2% — not the full 100% you expected

The Gap Widens with Higher Inflation

Inflation Rate	Money Runs Out By	Purchasing Power Retained	Days Short
3%	December 20th	97.2%	11 days
5%	December 14th	95.4%	17 days
8% (like 2022)	~Early December	~92.7%	~30 days

At 8% inflation (which we saw in 2022), you effectively lose almost an entire month of purchasing power before the COLA catches up.

The Law of Large Numbers Cuts Both Ways

This is the part that changes the claiming calculus.

Bigger Check = Bigger Dollar Loss

$53,000 benefit at 3% inflation → loses ~$1,500/year in real purchasing power
$24,000 benefit at 3% inflation → loses ~$699/year in real purchasing power

The higher benefit gets a bigger COLA in raw dollars, but it also bleeds more purchasing power to the lag effect. The erosion compounds year after year.

Impact on the Delay Advantage

When you factor in the cumulative inflation lag over a retirement spanning decades:

Scenario	Advantage of Delaying to 70
Conventional calculation	+$183,000
After accounting for COLA lag	+$63,000

That’s a $120,000 reduction in the perceived benefit of delaying — roughly a 65% haircut on the advantage.

Why Deflation Won’t Save You

You might think: “Doesn’t this work in reverse during deflation?” Technically, yes — but deflation essentially never happens in the U.S. economy. Inflation is the near-permanent reality, which means this lag effect is a one-way ratchet against your purchasing power.

What This Means for Your Decision

This Does NOT Mean “Always Claim at 62”

The claiming decision still depends on many factors:

Spousal and survivor benefits — If you’re the higher earner and have a spouse, delaying can still protect them with a larger survivor benefit
Other income sources — If you have pensions, 401(k)s, or other income to bridge the gap, delaying may still make sense
Health and longevity — Your personal health outlook still matters
Tax planning — Roth conversions and tax bracket management during the gap years

But It Does Mean the Math Is Closer Than You Think

The traditional “delay is always better if you live past 80” argument loses significant force when you account for inflation lag. The real breakeven point may be further out than the standard calculators suggest.

Key Takeaways

Social Security is only partially inflation-indexed by design — the annual COLA adjustment always lags behind real-time price increases
The lag effect compounds over time and is worse during high-inflation periods
Larger benefits lose more dollars to the lag, shrinking the mathematical advantage of delaying
The $183,000 advantage of delaying to 70 may really be closer to $63,000 after accounting for this effect
Factor this into your overall plan alongside spousal benefits, health, other income, and taxes — don’t make the decision on any single variable

Source

Daniel Ammerman — “Making Optimal Social Security Claiming Decisions” series, including analysis on Social Security inflation lag and partial indexing
Josh Scandlen — YouTube video breakdown and commentary

Guide created March 2026

Social Security COLA Inflation Lag: What You Need to Know