Clara Roades here. If you’ve spent a couple of decades quietly stacking assets across a taxable brokerage, a traditional 401(k) or IRA, and a Roth account, you’ve done the hard part. Now you face a quieter, more tactical question: when you start drawing from those accounts, which dollars do you spend first, and why? The answer is a withdrawal ladder—a sequence of distributions designed to keep your taxes low, your subsidies intact, and your portfolio resilient. This isn’t about picking the “best” account. It’s about sequencing withdrawals so that each dollar you spend does the least harm to your future self.
We’ll walk through the logic step by step, using real dollar examples and a long-horizon lens. By the end, you’ll have a clear framework you can adapt to your own numbers, whether you’re five years from retirement or already writing checks from your IRA.
Why a Withdrawal Ladder Matters More Than an Allocation Pie
Most retirement conversations stop at asset allocation—60% stocks, 40% bonds, or some variation. But allocation tells you what you own, not how you should spend it. A withdrawal ladder tells you which account to tap first, second, and third, and that sequence can shift your effective tax rate, your Medicare premiums, and the longevity of your portfolio.
Think of your accounts as three distinct buckets, each with its own tax personality:
- Taxable brokerage account: You funded it with after-tax dollars. Growth is taxed along the way through dividends and interest, and you’ll owe capital gains when you sell. But a big chunk of what you withdraw is return of basis—money you already paid tax on—so it can feel light on the 1040.
- Traditional IRA or 401(k): Every dollar you pull out is taxed as ordinary income. That includes the original contributions, the employer match, and all the growth. This is the heavy-lifter of your retirement savings, but it’s also the account that can push you into a higher bracket if you’re not careful.
- Roth IRA or Roth 401(k): You paid tax on the way in. Now qualified withdrawals are completely tax-free. This is your secret weapon for managing taxable income later in life.
The ladder concept simply means you spend from these buckets in an order that minimizes lifetime taxes—not just this year’s taxes, but the cumulative tax bill across decades. For most people following a long-horizon wealth path, that order looks like: taxable first, traditional second, Roth last. But the details matter enormously, especially when you factor in things like the standard deduction, the Social Security tax torpedo, and IRMAA surcharges on Medicare.
The Three Rungs of a Standard Withdrawal Ladder
Let’s build a concrete example. Imagine you’re 62, recently retired, and your portfolio looks like this:
- Taxable brokerage: $400,000, with a cost basis of $250,000
- Traditional IRA: $800,000
- Roth IRA: $200,000
You need $60,000 a year to cover expenses above any part-time income or Social Security you might claim later. Here’s how a ladder approach might unfold.
Rung One: Spend From Taxable First
In the early years, you live off your taxable account. Why? Because only the gains are taxed, and if you’ve held the assets for more than a year, those gains are taxed at long-term capital gains rates—0%, 15%, or 20%, depending on your total income. For a married couple filing jointly in 2025, the 0% long-term capital gains bracket goes up to $96,700 of taxable income. That means you could sell appreciated shares, realize a gain, and pay zero federal tax on that gain if your other income is low enough.
Let’s say you sell $60,000 worth of an index fund from your taxable account. Your cost basis is 62.5% of the account value ($250,000 / $400,000), so roughly $37,500 of that $60,000 is return of basis—money you already paid tax on. The remaining $22,500 is a long-term capital gain. If your only other income is $10,000 of interest and dividends, your total income is $32,500. After the standard deduction (about $30,000 for a married couple over 65), your taxable income is near zero. That $22,500 gain falls entirely in the 0% capital gains bracket. You just funded a year of retirement and paid no federal income tax.
This is the quiet power of a taxable account. It’s not just a holding pen—it’s a tax-efficient spending tool in the early years of retirement.
Rung Two: Tap Traditional Accounts Strategically
Once your taxable account is drawn down—or once you need more than it can provide without pushing gains into the 15% bracket—you move to the traditional IRA. But you don’t just start pulling $60,000 a year and call it good. You think about the tax brackets you’re filling.
Suppose you’re now 65, your taxable account is down to $50,000, and you need to supplement. You might take $30,000 from the taxable account (mostly basis) and $30,000 from the traditional IRA. The IRA withdrawal is fully taxable as ordinary income. Combined with some interest income, your adjusted gross income might be $35,000. After the standard deduction, taxable income is around $5,000—firmly in the 10% bracket. You pay $500 in federal tax on $60,000 of spending. That’s an effective rate under 1%.
The goal with traditional accounts is to fill the lower tax brackets each year without spilling into the next one unnecessarily. If you have a large traditional balance, you might even do Roth conversions in low-income years—moving money from traditional to Roth, paying tax at today’s low rate, and reducing future required minimum distributions (RMDs). This is where the ladder becomes a multi-year chess game, not a one-time decision.
Rung Three: Preserve Roth for the Long Game
Roth dollars are the last rung because they’re the most valuable. They grow tax-free and come out tax-free. You want them compounding as long as possible. But they also serve as a pressure-release valve later in retirement.
Imagine you’re 75, RMDs from your traditional IRA are pushing you into the 22% bracket, and you need an extra $20,000 for a roof replacement. If you take that from the traditional IRA, you’ll pay $4,400 in federal tax on that $20,000. If you take it from the Roth, you pay nothing—and you avoid pushing more Social Security income into taxation. That’s the beauty of the Roth rung: it lets you cover lumpy expenses without triggering a tax cascade.
For many long-horizon savers, the Roth is also the last account standing for heirs. It passes tax-free to beneficiaries, who can stretch it over 10 years under current rules. That makes the Roth not just a spending tool, but a legacy tool.
How the Ladder Interacts With Social Security and Medicare
The withdrawal ladder doesn’t exist in a vacuum. Two big programs—Social Security and Medicare—respond directly to your taxable income. Get the ladder wrong, and you could inadvertently increase your Medicare premiums or make more of your Social Security taxable.
The Social Security Tax Torpedo
Social Security benefits become taxable based on your “combined income”—your adjusted gross income plus nontaxable interest plus half your Social Security benefit. For a single filer, if combined income exceeds $25,000, up to 50% of benefits become taxable. Above $34,000, up to 85% becomes taxable. For married couples, the thresholds are $32,000 and $44,000.
Here’s the trap: an extra dollar of IRA withdrawal can make another $0.85 of Social Security taxable, effectively creating a marginal tax rate much higher than the bracket suggests. A couple in the nominal 12% bracket could face a marginal rate of 22.2% or even 40.7% in the “torpedo” zone. A well-built ladder avoids this by using Roth dollars or high-basis taxable sales to keep combined income below the torpedo thresholds in years when Social Security is claimed.
IRMAA and Medicare Premiums
Medicare Part B and Part D premiums are income-tested. If your modified adjusted gross income from two years prior exceeds certain thresholds, you pay an Income-Related Monthly Adjustment Amount (IRMAA). For 2025, the first IRMAA threshold for a married couple is $212,000. But the brackets are cliff-like: go $1 over, and your premiums jump by hundreds of dollars per month for the year.
A withdrawal ladder can help you stay just under an IRMAA cliff by using Roth money or carefully managing capital gains realizations. This is especially important in the years before you enroll in Medicare, because the lookback period means your income at 63 affects your premiums at 65.
Building Your Own Ladder: A Year-by-Year Thought Process
Let’s get practical. Here’s a simplified year-by-year framework you can adapt. Assume you’re retiring at 60 with the same $1.4 million portfolio from earlier, and you’ll claim Social Security at 70 to maximize the delayed retirement credits.
Ages 60–64: The Taxable Years. Spend almost entirely from the taxable account. Keep realized capital gains low enough to stay in the 0% bracket. If you need more spending money, consider selling high-basis shares first. Use these years to do small Roth conversions—maybe $20,000–$30,000 a year—filling the 10% and 12% brackets with converted amounts. Pay the tax from the taxable account. This slowly shifts money from the traditional IRA to the Roth while your tax rate is low.
Ages 65–69: The Bridge Years. Your taxable account is thinning. You start supplementing with traditional IRA withdrawals, but you’re still mindful of the 12% bracket ceiling. You continue Roth conversions if it makes sense. You’re also watching your income two years out because of the IRMAA lookback. A couple with $150,000 of income at 63 won’t hit IRMAA at 65, but $213,000 will. Precision matters.
Ages 70+: The RMD and Social Security Years. Social Security kicks in, and RMDs begin. Your ladder now works in reverse: you take RMDs first (because you have to), then supplement with Roth if needed. The taxable account might be nearly empty, or you might use it for charitable giving—donating appreciated shares to avoid capital gains and get a deduction if you itemize. The Roth becomes your emergency fund and your tax-smoothing tool.
This sequence isn’t rigid. If the market drops 30% in your early 60s, you might pull from the traditional IRA sooner to avoid selling depressed taxable assets. Or you might do a larger Roth conversion while account values are low, effectively moving more shares into the Roth for the same tax cost. The ladder is a framework, not a formula.
Common Mistakes That Break the Ladder
Even careful planners can stumble. Here are the missteps I see most often, and how to avoid them.
Taking Social Security Too Early
Claiming Social Security at 62 while still holding a large traditional IRA is like pouring water into a leaky bucket. You’re adding taxable income during the years you should be doing Roth conversions or spending down taxable assets at low rates. Delaying Social Security to 70 gives you a decade of low-income years to optimize your ladder—and it permanently increases your benefit by about 8% per year of delay. For a couple where the higher earner’s full retirement age benefit is $3,000 a month, waiting from 62 to 70 turns $2,250 into $3,720—a 65% increase. That’s guaranteed, inflation-adjusted income you can’t outlive.
Ignoring the Cost Basis in Taxable Accounts
Not all taxable dollars are equal. If you blindly sell shares without considering which lots have the highest basis, you might realize more gains than necessary. Specific identification of shares lets you sell the lots with the smallest gain—or even a loss—to free up cash with minimal tax impact. Most brokerages now default to average cost basis, which can be less tax-efficient. A quick call to your brokerage to switch to specific ID can save thousands over a retirement.
Letting RMDs Dictate Your Spending
RMDs force you to take money out of traditional accounts, but they don’t force you to spend it. If your RMD is $40,000 and you only need $30,000, you can reinvest the excess in a taxable account. But that’s less tax-efficient than having done Roth conversions earlier. A ladder that front-loads conversions can shrink future RMDs and keep more of your money growing tax-free.
How Small Changes Compound Across the Ladder
It’s easy to think of these decisions as small—a few hundred dollars in tax here, a slightly lower premium there. But over a 30-year retirement, the compounding effect is substantial. A couple that saves $3,000 a year in taxes through careful laddering, invested at a 6% real return, accumulates an extra $237,000 over three decades. That’s not a rounding error; it’s a year or two of additional spending, a larger legacy, or a buffer against long-term care costs.
I’ve written before about how a ten-dollar weekly bump can reshape your retirement number. The same principle applies on the withdrawal side. Small, consistent tax savings compound into meaningful differences in your portfolio’s longevity.
Frequently Asked Questions
Should I always spend from taxable accounts first?
For most retirees, yes—but with nuance. Spending from taxable first preserves the tax-deferred growth in traditional accounts and the tax-free growth in Roth accounts. However, if you’re in a very low-income year—say, you retired mid-year and have little other income—it might make sense to take a small traditional IRA withdrawal or do a Roth conversion to fill the 0% and 10% brackets, even if you don’t need the money for spending. The key is to use the taxable account as your primary spending source while using low-income years to shift money from traditional to Roth at bargain tax rates.
What if I have a large traditional IRA and a small taxable account?
This is a common situation for people who maxed out 401(k)s for decades. In this case, you’ll likely need to start drawing from the traditional IRA earlier. The ladder still applies, but the rungs are compressed. You might spend the taxable account in the first two or three years while doing aggressive Roth conversions. Then, when the taxable account is gone, you’ll take traditional IRA withdrawals for living expenses while continuing smaller conversions. The goal remains the same: fill the lower brackets each year without spilling into higher ones, and build up the Roth as a tax-free resource for later.
How does a withdrawal ladder change if I plan to leave money to heirs?
If leaving a legacy is a priority, the Roth becomes even more valuable. Under current law, non-spouse beneficiaries must empty an inherited traditional IRA within 10 years, which can push them into high tax brackets during their peak earning years. An inherited Roth IRA also has a 10-year distribution requirement, but the distributions are tax-free. By spending your taxable and traditional accounts first and preserving the Roth, you pass on a more tax-efficient inheritance. You might also consider using taxable account assets for charitable bequests, since charities don’t pay capital gains tax on appreciated securities.
Can I use a withdrawal ladder if I’m still working part-time?
Absolutely. Part-time income changes the math but not the framework. Your earned income will fill some of the lower tax brackets, which might reduce the room you have for 0% capital gains or low-cost Roth conversions. In that case, you might lean more heavily on the Roth for spending needs, or you might delay conversions until you fully stop working. The ladder adapts to your income, not the other way around.
What Comes Next
If you’ve built the savings, the withdrawal ladder is how you protect them. It’s not about being clever or timing the market. It’s about being deliberate with the accounts you’ve spent decades filling. The next step is to map your own numbers: list your account balances, your cost basis, your expected Social Security, and your spending needs. Then sketch a year-by-year plan for the first five years of retirement. You don’t need precision—you need a direction. The ladder will evolve as tax laws change, as your health needs shift, and as the market does what markets do. But having a framework means you’re making decisions, not just reacting.
If you want to go deeper, spend some time with the IRS publications on capital gains and retirement plan distributions, or use the IRS’s own FAQ on IRAs to understand the distribution rules. For a clear-eyed look at how Social Security taxation works, the Social Security Administration’s page on benefit taxes is worth bookmarking. And if you’re wrestling with Medicare premiums, the official Medicare costs page explains IRMAA in plain language.
This is the kind of slow, careful work that defines a durable financial life. Not exciting, but deeply satisfying when you see the pieces fit together.