Retirement & Later Life Series · Created August 31, 2026 · 6 min read
The Withdrawal Years
The 4% conversation, the first-five-years problem, and the tax middle game most retirees miss.
Accumulation has one instruction: buy and hold. The withdrawal years are harder — the order, the rate, and the first five years decide whether the money outlives you.
The 4% Conversation
The classic guideline: withdraw 4% of the portfolio in year one, adjust that dollar amount for inflation annually, and a diversified portfolio historically survived 30 years.[1] It is a planning figure, not a law — longer retirements, low-yield eras, and personal spending curves all bend the time horizon it was built for.
Two details usually get lost. It was derived from a 30-year horizon, so a retirement starting at 55 is asking the rule a question it was not designed to answer. And the inflation adjustment applies to the dollar amount, not to the balance — you take 4% once, then raise that number by inflation, rather than recalculating 4% of a shrinking portfolio every year.
The mature version: start near 3.5–4%, stay flexible (skip the inflation raise after a bad market year, spend a bit more after a great one), and revisit annually. Flexibility is worth more than precision, and it is worth more than any extra decimal place of accuracy in the starting rate.
The other honest observation: real spending in retirement is rarely a flat inflation-adjusted line. It tends to be higher in the early go-go years, lower in the middle, and higher again at the end when health costs arrive. A plan that assumes a flat line is wrong in both directions and roughly right on average.
Sequence Risk: The First-Five-Years Problem
Two retirees with identical average returns can end up in completely different places, because the order of returns matters once you are selling. Bad markets early, while withdrawals are forced, sell more shares at low prices — and those shares are not there to participate in the recovery. Later gains cannot fully repair it.
This is the mirror image of the accumulation years, where a crash early in a career is a gift. The same volatility that helps a 25-year-old buyer hurts a 65-year-old seller, and nothing about the portfolio changed — only the direction of the cash flow.
The defenses:
- A cash buffer. One to three years of spending in cash and short-term bonds. Sell from the buffer in down years, refill it in good ones. This is the single most effective defense and the easiest to implement.
- The flexible-rate habit above. Skipping one inflation raise after a bad year does more for portfolio survival than most people expect.
- An income floor. Anything that shrinks what the portfolio has to produce — Social Security timing, a pension, an annuitized slice. Covering the non-negotiable expenses with guaranteed income means the market can only threaten the discretionary half.
- Not retiring into a wall. A year of part-time income early in retirement reduces the withdrawal rate exactly when it matters most.
Withdrawal Order and the Tax Middle Game
The conventional order — taxable first, tax-deferred second, Roth last — is a starting point, not gospel. Taxable accounts get favorable capital-gains rates and a step-up in basis at death; Roth dollars are the most flexible thing you own and the best asset to leave to heirs; tax-deferred dollars are the ones the government has a claim on and the ones RMDs eventually force out.
The middle game most retirees miss is the low-income window between retiring and RMDs. Between the last paycheck and the first forced withdrawal, taxable income can be unusually low — which makes it prime territory for Roth conversions at bargain brackets. Converting during that window shrinks the traditional balance that RMDs will later be calculated from, and every converted dollar leaves the RMD base permanently.
Two things constrain how aggressively to convert. Filling a bracket is good; spilling into the next one is usually not. And IRMAA — the income-related monthly adjustment amount, the surcharge added to Medicare Part B and Part D premiums at higher incomes — is calculated from your tax return two years earlier, so a large conversion at 63 raises your Part B premium at 65. See Medicare Basics for the thresholds. Which bucket holds what in the first place is in Tax-Advantaged Accounts.
RMDs: What Percentage Are You Actually Forced to Take?
Required minimum distributions (RMDs) from traditional accounts currently begin at 73, rising to 75 for younger cohorts under SECURE 2.0.[2] The first one can be deferred to April 1 of the following year, but doing that stacks two RMDs into one tax year, which is usually a bad trade.
The amount is not a fixed percentage. It is your December 31 balance divided by a life-expectancy factor from the IRS Uniform Lifetime Table — which works out to a percentage that starts small and climbs every year for the rest of your life.[3]
| Age | Distribution period | Effective % of balance | On a $1,000,000 balance |
|---|---|---|---|
| 73 | 26.5 | 3.8% | $37,736 |
| 75 | 24.6 | 4.1% | $40,650 |
| 80 | 20.2 | 5.0% | $49,505 |
| 85 | 16.0 | 6.3% | $62,500 |
| 90 | 12.2 | 8.2% | $81,967 |
Three things follow from that shape. The first RMD at 73 is close to a 4% withdrawal — which is why, for many retirees, RMDs are not a disruption at all; they are roughly what the plan already called for. The percentage doubles by the early nineties, which is where a large traditional balance can push someone into a higher bracket in their eighties than they were ever in while working. And the whole schedule is why conversions in the low-income window matter: they act on the balance the percentage is applied to.
The penalty for missing one is real. The excise tax is 25% of the amount not taken, reduced to 10% if you correct it within two years.[2] The correction is a form and a catch-up distribution, not a negotiation — but it has to actually be done.
The Decade Where Advice Pays for Itself
Most of this site argues that ordinary families do not need to pay anyone to invest for them — a low-cost total-market index fund and thirty years of patience beats almost everything sold to them. The withdrawal years are the honest exception.
The decisions here are irreversible, interacting, and personal: claiming age, conversion sizing, IRMAA thresholds, the order of withdrawals across three tax treatments, and what any of it does to a surviving spouse. A few hours with a fee-only fiduciary — paid by the hour or by flat fee, not by a percentage of your assets and never by commission — is one of the few places in personal finance where paying for advice reliably earns its cost back. Ask how they are compensated first; the answer tells you most of what you need to know.
Where to go next: Social Security Timing — the other half of retirement income; Investing for Retirement — the accounts this is drawing down; Tax-Advantaged Accounts — which bucket to spend from first; and Medicare Basics — the healthcare line this budget has to carry. Once the plan is safe, Grandparent Giving is what the surplus is for.
References & Resources
- William Bengen (1994) and the Trinity study (1998) — the origins of the 4% guideline, both built on a 30-year horizon and U.S. historical returns. Background and retirement resources at Investor.gov.
- IRS: RMD FAQs — The age-73 beginning date, the April 1 first-year deadline, and the excise tax of 25% on amounts not withdrawn, reduced to 10% if corrected within two years.
- IRS Publication 590-B, Appendix B, Table III (Uniform Lifetime) — The distribution periods in the table above. The percentages and dollar figures are simply 1 divided by the distribution period, applied to a round balance for illustration.
Educational only. Withdrawal strategy is one of the few areas of personal finance where individualized professional advice reliably earns its fee — and where the mistakes cannot be undone the following year.