Why Retiring at 65 May Cost You More Than You Think

The 25x Rule Has a Serious Blind Spot

Financial planning circles love the '25x rule': save 25 times your annual expenses and you can retire safely. It comes from the 4% withdrawal rule, which itself comes from a 1994 study built around a 30-year retirement horizon. If you retire at 65 and live to 95, that math just barely holds. But the Social Security Administration now puts the average 65-year-old's life expectancy past 85, and a married couple has roughly a one-in-four chance that at least one partner reaches 92.

A 30-year retirement is not a worst case anymore. It is close to the median. That means a retiree drawing 4% annually from a $1 million portfolio faces a real risk of running out of money in their late 80s, right when medical costs typically spike. Stretching the horizon to 35 years drops the safe withdrawal rate closer to 3.3%, which pushes the required nest egg from $1 million to about $1.21 million for the same lifestyle.

What Stubborn Inflation Since 2022 Did to Retirement Math

Cumulative inflation from 2022 through mid-2026 reset the cost of living in ways that savings calculators built before that period simply did not anticipate. Groceries, housing insurance, and healthcare have all repriced at a structurally higher level. Someone who planned in 2019 on spending $55,000 a year in retirement now likely needs closer to $68,000 to maintain the same standard of living, according to Bureau of Labor Statistics data. Try the retirement savings calculator to see your own numbers.

That $13,000 gap compounds over decades. A retiree who fails to account for it will draw down principal faster than their model predicted, which accelerates the timeline to depletion. Running updated projections with a realistic inflation assumption of 3% rather than the traditional 2.5% adds roughly 15% to the required savings target for someone planning a 30-year retirement.

The current rate environment adds another wrinkle. Shorter-term Treasury yields have softened from their 2023 peaks, meaning the bond portion of a conservative portfolio is generating less passive income than it did two years ago. That puts more pressure on equity allocations to carry retirement income, which increases sequence-of-returns risk in the early withdrawal years.

Sequence Risk Is the Variable Most People Ignore

Sequence of returns risk means the order of investment gains and losses matters as much as the average return itself. A retiree who experiences a down market in year one of retirement suffers far more than one who hits the same down market in year fifteen. Why? Because early withdrawals lock in losses on a smaller asset base, leaving less capital to recover when markets rebound.

A concrete example: two retirees both average 6% annual returns over 20 years. One experiences a 25% drop in year one; the other experiences it in year 15. The first retiree runs out of money roughly four years before the second, even though their average return is identical. This is why the size of your portfolio on the day you retire is only part of the picture. What the market does in the first three to five years of withdrawal is arguably more important.

Running the Numbers Before You Commit to a Date

Before locking in a retirement date, it pays to stress-test your plan against different inflation assumptions, withdrawal rates, and market scenarios. A good retirement savings calculator lets you adjust those variables rather than relying on a single optimistic projection. Plug in your current savings, expected contributions, target retirement age, and spending needs, then see what survival probability comes out the other side.

The exercise usually produces one of two outcomes: either you confirm you are on track, which is genuinely reassuring, or you find a gap early enough to do something about it. Working two extra years, cutting annual spending by $4,000, or shifting your asset allocation can all close a meaningful shortfall when you have time on your side. Running those scenarios at 50 is a very different conversation than running them at 63.