Ask the internet which account to draw from first in retirement and you’ll get a tidy answer almost everywhere: spend your taxable brokerage account first, then your tax-deferred accounts (traditional IRA and 401(k)), and save your Roth for last. It’s clean, it’s memorable, and it’s the right starting point.
It’s also only half the answer — and for a household with $1.5 million to $5 million spread across these account types, the missing half is where most of the money is won or lost.
The problem with the standard rule is that it optimizes for the wrong thing. “Spend taxable first, let the tax-deferred accounts compound” is built to minimize taxes this year. But a retirement spans thirty years, and the goal isn’t the smallest tax bill in any single year — it’s the smallest tax bill over your lifetime. Those are not the same thing, and chasing the first one can quietly set up a much larger bill later. Understanding why is the difference between following a rule of thumb and actually planning.
This is educational rather than prescriptive — the goal is to show you the machinery so you understand which questions matter, not to prescribe an answer that only your specific numbers can produce.
Why “Just Let the IRA Grow” Can Backfire
Here’s the trap hiding inside the conventional wisdom. If you faithfully spend your taxable account first and leave your traditional IRA untouched to compound, you’re doing exactly what the rule says — and you may be building a tax problem that detonates later.
A traditional IRA or 401(k) is a tax-deferred account, not a tax-free one. Every dollar in it will eventually be taxed as ordinary income when it comes out. And it will come out, whether you want it to or not: once you reach RMD age — 73 for most people today, rising to 75 for those born in 1960 or later — the government forces required minimum distributions on a schedule that grows as a percentage of the account every year. The bigger the account, the bigger the forced withdrawal, and the higher the tax bracket those forced dollars land in.
So the retiree who “successfully” let a $1.5 million IRA compound into $3 million by their mid-70s hasn’t avoided the tax — they’ve concentrated it. Now they’re pulling six figures a year in forced distributions, stacked on top of Social Security, possibly pushing into a higher bracket than they ever paid while working, dragging more of their Social Security into taxation, and tripping Medicare premium surcharges along the way. The deferral didn’t make the tax disappear. It made it bigger and moved it to the worst possible time.
You can, in other words, be too good at tax deferral.
The Real Goal: Smooth Your Lifetime Tax Rate
The better way to think about withdrawal sequencing is that you’re trying to pay your taxes at the lowest rate you’ll ever face — and to do that, you want to avoid both extremes. You don’t want years of artificially low taxable income (where you “waste” low tax brackets that you’ll never get back), and you don’t want years of spiking income (where a forced surge of RMDs throws you into high brackets).
The aim is a smooth, deliberately managed taxable income across your whole retirement, filling up the low brackets every year rather than leaving them empty now and overflowing the high ones later.
The single most important concept here is your marginal tax rate— the rate that applies to your next dollar of income, not the average rate across all of it. Every withdrawal decision is really a marginal-rate decision: “if I pull one more dollar from this account this year, what does it actually cost me?” And the answer is frequently not your tax bracket, because for retirees the next dollar of income can also drag Social Security into taxation, push capital gains out of the 0% rate, or cross a Medicare surcharge line. Your real marginal rate can be far higher than your bracket suggests — a dynamic we walk through in detail in our piece on the Social Security tax torpedo. Planning withdrawals without knowing your true marginal rate is planning in the dark.
The Strategy That Actually Works: Spend Taxable, Convert the Rest
Here’s where the sophisticated version departs from the rule of thumb. The strongest approach for many affluent retirees isn’t “spend taxable first” or “tap the IRA early” — it’s both at once, through a coordinated move:
Fund your living expenses from the taxable account, but don’t let those newly-empty low tax brackets go to waste — fill them by converting a piece of your traditional IRA to a Roth each year.
This does three things simultaneously. Your cash flow comes from the brokerage account (tax-efficient, since it’s largely return of principal plus favorably-taxed gains). Your traditional IRA gets deliberately whittled down at low rates through partial Roth conversions in your low-income years. And the dollars you convert land in a Roth, where they grow tax-free, carry no future RMD, and come out tax-free later.
The payoff arrives years on. By the time RMDs hit, the traditional IRA has been intentionally shrunk, so the forced distributions are smaller and stay in lower brackets. You’ve effectively moved income out of your high-tax future and into your low-tax present — paying tax on those dollars at, say, 12% or 22% today instead of being forced to recognize them at 32%+ later.
The Gap Years Are Where the Leverage Lives
There’s a specific window where this strategy is most powerful, and it’s the one your standard advice never mentions: the gap years between when you retire and when Social Security and RMDs begin.
Picture someone who retires at 63. Their paycheck has stopped. They haven’t claimed Social Security yet (they’re letting it grow). RMDs are still a decade away. For those years, their taxable income can be remarkably low — which means their low tax brackets are sitting wide open and empty. This is the richest tax-planning window in most people’s lives, and it’s brief. Every year you spend in it without deliberately filling those low brackets is a low-rate opportunity gone forever.
This window is important enough that it deserves its own treatment, and we’ll be covering the gap-years strategy in depth separately. The headline for now: if you’re between roughly 60 and your RMD age and your income is low, that’s not a time to coast. It’s the time to do the most deliberate tax planning of your retirement.
Watch the Tripwires Before You Pull the Trigger
The reason withdrawal sequencing can’t be reduced to a simple rule is that the moment you start moving income around, you trip wires that aren’t visible in the tax brackets themselves. Before deciding how much to withdraw or convert in any year, a good plan checks each of these:
Social Security taxation. Additional income can pull more of your Social Security benefits into taxation, spiking your real marginal rate well above your bracket. (This is the tax torpedo, linked above.)
The 0% capital gains rate. In 2026, long-term capital gains and qualified dividends are taxed at 0% as long as your total taxable income stays under $98,900 (married filing jointly) or $49,450 (single). But ordinary income — including an IRA withdrawal or Roth conversion — stacks underneath your capital gains and can shove them out of that 0% rate. This creates a genuine tension: converting to a Roth and harvesting gains at 0% compete for the same low-bracket space, and you often can’t max out both in the same year. Which one wins depends on your situation, and it’s a year-by-year decision.
Medicare (IRMAA) surcharges. Cross certain income thresholds and your Medicare Part B and D premiums jump — and because IRMAA works as cliffs, a single dollar over a line can cost you hundreds or thousands in surcharges two years later. A Roth conversion that looks great on income-tax math alone can be a loser once an IRMAA cliff is factored in.
The Net Investment Income Tax. A 3.8% surtax applies to investment income once your modified AGI exceeds $200,000 (single) or $250,000 (joint) — another threshold to plan around when timing larger withdrawals or gains.
None of these should stop you from acting. They’re simply the reason the “right” withdrawal mix has to be calculated against your numbers each year, not pulled off a generic list.
How We Think About It
The throughline is that withdrawal sequencing isn’t a one-time decision you make at retirement and then run on autopilot — it’s an annual exercise in deliberately managing your taxable income to the lowest lifetime rate. Some years that means larger Roth conversions; some years it means harvesting gains at 0% instead; some years it means doing less because a tripwire is too close. The accounts you draw from are the levers, and your projected lifetime tax picture is what tells you which lever to pull.
It’s also where planning and investment management genuinely have to operate as one thing rather than two. Which account a dollar comes from is a tax decision and a portfolio decision at the same time — you can’t sequence withdrawals well without coordinating the tax plan and the investment plan together. That coordination, repeated thoughtfully year after year, is where the real, compounding value of getting this right actually lives.
Common Questions
Isn’t “spend taxable first, then tax-deferred, then Roth” the correct order? It’s the right starting point, but it optimizes for the lowest tax bill this year rather than over your lifetime. Faithfully leaving a large traditional IRA untouched to compound can backfire: it grows into much larger required minimum distributions later, which can push you into higher brackets in your 70s than you ever paid while working. The more complete approach spends from the taxable account for cash flow while deliberately drawing down the traditional IRA at low rates through partial Roth conversions in your lower-income years.
What’s the single biggest opportunity most retirees miss? The gap years — the window between when your paycheck stops and when Social Security and RMDs begin. Taxable income is often unusually low then, which leaves your low tax brackets sitting empty. Filling them deliberately (through IRA withdrawals or Roth conversions) at low rates pulls income out of your higher-taxed future. That window is brief and doesn’t come back, so it’s the most valuable time to plan, not coast.
Why does my “tax bracket” understate what a withdrawal really costs? Because for retirees, the next dollar of income often does more than get taxed at your bracket — it can pull more Social Security into taxation, push long-term capital gains out of the 0% rate, or cross a Medicare surcharge cliff. Your true marginal rate (what that next dollar actually costs, all effects included) is what should drive withdrawal decisions, and it’s frequently higher than your stated bracket.
Can I do Roth conversions and harvest capital gains at 0% in the same year? Often not fully, and this surprises people. Ordinary income (including a Roth conversion) stacks underneath your capital gains, so converting can push your gains out of the 0% rate ($98,900 of taxable income for joint filers in 2026). The two strategies compete for the same low-bracket space, and which one to prioritize in a given year depends on your overall picture and your expected future rates. It’s a year-by-year coordination decision.
Does the new 2026 senior deduction change my withdrawal strategy? Only modestly. The temporary $6,000-per-person deduction for those 65 and older lowers taxable income, which can create a bit more room for conversions or withdrawals at low rates. But note that it does not reduce your AGI, so it does not help with Social Security taxation or Medicare premium surcharges — meaning it doesn’t relieve two of the main tripwires you’re sequencing around.
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