Quick Answer
Tax-smart retirement withdrawal sequencing can save a couple with $2 million in assets $35,000 in lifetime federal taxes, and leave heirs an extra $106,000. The pro move: fill low tax brackets with traditional IRA withdrawals before Social Security and RMDs begin, then blend taxable and Roth accounts to manage brackets and avoid Medicare surcharges.
When my uncle Charlie retired at 62, he proudly showed me his three-account spreadsheet, taxable, IRA, Roth. Then he started spending them in that exact order, figuring he’d let the Roth grow forever. By his mid-70s, his RMDs were pushing him into the 24% bracket and triggering Medicare surcharges. It’s a classic blunder in retirement withdrawal sequencing, and according to T. Rowe Price’s 2026 analysis, a coordinated sequence could have saved him $35,000 in federal taxes over his lifetime.
With life expectancies stretching into the 90s and tax brackets scheduled to revert to higher pre-TCJA levels after 2025, getting the drawdown order right is one of the few variables wholly within your control, and the payoff is concrete.
Fill Low Tax Brackets Early, Before RMDs and Social Security
The single highest-impact technique for cutting lifetime retirement taxes is to withdraw from traditional IRAs or convert to Roth in the years before you claim Social Security and before Required Minimum Distributions kick in at age 73.
Here’s the arithmetic that makes it work. In 2026, a married couple filing jointly gets a standard deduction of $27,700, and the 12% bracket tops out at $94,300 in taxable income. That means they can pull up to $122,000 from their IRA, and pay an average tax rate under 9%. If they instead wait until age 73, that same withdrawal might land in the 22% or 24% bracket because Social Security and pension income already consume the lower rungs. The difference: $122,000 in the 22% bracket would cost $26,840, versus just $10,852 in the 12% bracket, a $15,988 annual saving.
Delaying Social Security to age 70 magnifies this window dramatically, because you keep several extra years of zero- or low-income tax space for these withdrawals or conversions. That’s a point many mainstream articles miss. My cousin Rita filed at 62 and gave up nearly a decade of 12% bracket space, a choice that will likely cost her tens of thousands in unnecessary taxes.
In a single retiree scenario, T. Rowe Price modeled that taking Roth conversions during these pre-Social Security years saved $36,000 in lifetime federal taxes, with an extra $22,000 preserved for heirs (source). The tactic works even better for married couples because they share larger brackets.
Key Takeaway: Retirees who fill the 12% bracket with traditional IRA withdrawals before age 73 can save $36,000 or more in lifetime federal taxes, according to T. Rowe Price modeling. Delaying Social Security to 70 expands this low-tax window considerably.
Why the Classic ‘Taxable-First’ Retirement Withdrawal Sequencing Can Backfire
The standard advice, spend taxable accounts first, then traditional, then Roth, works beautifully in theory but often fails in practice because it ignores the tax torpedo of future RMDs.
Let’s walk through the logic. You hold your taxable brokerage, which generates capital gains and dividends taxed at preferential rates, and you tap it first to let the tax-deferred IRA and tax-free Roth compound longer. It sounds smart. But by the time you hit your 70s, the IRA has ballooned, and RMDs can easily force out $60,000 or more per year, on top of Social Security and any pension. Suddenly you’re in the 22% or 24% bracket, maybe crossing Medicare IRMAA thresholds. You’ve effectively deferred taxes only to pay them at a higher rate.
“We actually try to keep these a little bit separate in, I’ll say, what I call the ‘account sequencing question,’ which is, ‘In what sequence do I want draw down my accounts and where am I holding the dollars across those accounts?’”
Proportional withdrawals, where you take a bit from each account type to keep income steady, often outperform the classic sequence. They help avoid bracket creep and reduce sequence-of-returns risk (if markets drop, selling only from taxable could lock in losses while your IRA bounces back). Some retirees now use adaptive software, like the AI-driven withdrawal adjustments we’ve covered, to rebalance withdrawals in real time.
A rigid taxable-first plan also fails for those with heavy unrealized gains: liquidating appreciated stock can generate big capital gains, which, while low-tax, still count toward your AGI and affect other thresholds. Blending with a Roth withdrawal to keep AGI low might work better.
Key Takeaway: The traditional taxable-first sequence can cost a couple $35,000 in avoidable federal taxes over a retirement, as modeled by T. Rowe Price. Building in flexibility, and occasionally tapping IRAs early, keeps you in control of brackets, not the other way around.
The table below quantifies what a coordinated approach can actually deliver in real-dollar terms, using T. Rowe Price’s 2026 projections for a couple with $2 million in retirement assets and a single filer case for Roth conversions.
| Strategy | Lifetime Federal Tax Savings | Extra After-Tax Inheritance |
|---|---|---|
| Conventional (unplanned) order | $0 | $0 |
| Tax-efficient withdrawal sequencing | $35,000 | $106,000 |
| Strategic Roth conversions | $36,000 | $22,000 |
Roth Conversions as a Sequencing Superpower
Roth conversions aren’t a one-off event, they’re a recurring tool that, when timed with your withdrawal sequence, can slash future RMDs and shift more wealth to heirs tax-free.
Consider the modeled single retiree from T. Rowe Price: by converting a portion of his traditional IRA each year before claiming Social Security, he saved $36,000 in lifetime federal taxes and left an extra $22,000 to his beneficiaries. The mechanics are simple: you move funds from a traditional IRA to a Roth, pay the tax now (ideally with cash from a taxable account, moving that wealth into tax-free territory too), and from that point forward, withdrawals are tax-free and no RMD applies.
But here’s where state tax planning enters the picture, a gap most federal-focused guides overlook. If you live in California and plan to relocate to Texas or Nevada in a few years, holding off on Roth conversions until after the move can save you a state income tax bite of up to 13.3% on the converted amount. Alternatively, if you’re already in a no-income-tax state, converting now locks in zero state tax before possible future moves. This state-aware sequencing can add tens of thousands in net savings.
One big hazard: conversions increase your MAGI, and even a one-year spike can trigger Medicare IRMAA surcharges (we’ll tackle that soon). So the pro move is to calculate exactly how much you can convert each year to stay below the IRMAA threshold, for a married couple, that’s around $212,000 in 2026 based on a 2024 tax return. Using SEC-vetted retirement planning apps can make these multi-year projections far easier.
And a crucial exception: conversions lose their edge if you expect to be in a lower bracket in retirement than your heirs will face. In that case, paying tax now at 22% to save a 12% heir bracket makes no sense. Model the beneficiary side always.
Key Takeaway: Strategic Roth conversions before RMDs can save a single filer $36,000 in federal taxes and boost inheritance by $22,000, according to T. Rowe Price. Timing conversions around state moves and IRMAA limits amplifies the benefit.
Taming RMDs and the Widow(er) Trap
Required Minimum Distributions can push you into higher brackets, and after a spouse dies, the surviving spouse often faces a brutal tax squeeze, unless you plan for it early.
RMDs begin at age 73 for most current retirees. The IRS determines your required distribution by dividing your prior year-end IRA balance by a life expectancy factor. If you’ve let your traditional IRA balloon to $1 million or more, that first RMD alone might be around $40,000, added to your other income, it can bump you from the 12% to the 22% bracket. The smart preemptive move: aggressively draw down the IRA in your 60s (to the top of the 12% bracket) so the remaining balance, and thus the RMD, is far smaller.
For those charitably inclined, Qualified Charitable Distributions (QCDs) are a powerful tool. In 2026, you can direct up to $111,000 from your IRA straight to a qualifying charity. The QCD counts toward your RMD but is excluded from taxable income, a direct, dollar-for-dollar reduction in AGI. This technique also helps keep you below IRMAA thresholds.
Now the widow(er) trap: When one spouse passes, the survivor files as a single taxpayer with half the standard deduction (roughly $15,650 in 2026). Yet the same RMD obligation often remains. A married couple with $90,000 in Social Security and a $40,000 RMD might stay in the 12% bracket; after one spouse dies, the survivor’s Social Security may drop to $60,000, but the RMD stays at $40,000, pushing total income to $100,000, firmly in the 22% bracket for singles. Plus, IRMAA thresholds are lower for singles, so the survivor could also incur surcharges. The fix: accelerate withdrawals or conversions during the joint-filing years to use up the larger married brackets before the survivor faces steeper single rates. Using an AI financial advisor can help couples model survivor taxes with precision.
I’ve seen families overlook this completely, only to discover a $6,000 annual tax jump and extra Medicare costs after a death. Integrating survivor tax planning into your sequence now is no different than buying life insurance, it’s about protecting the one left behind.
Key Takeaway: Using early withdrawals and QCDs up to $111,000 annually can shrink future RMDs and protect the surviving spouse from a punitive tax hike, as highlighted by T. Rowe Price’s 2026 limits. Survivor planning must be baked into the original sequence.
Medicare IRMAA and Other Income-Based Tax Cliffs
Withdrawals that push your Modified Adjusted Gross Income above certain thresholds can trigger Medicare IRMAA surcharges, which act like a hidden tax of up to several thousand dollars per year.
For 2026, the standard Part B premium is about $174.70 per month, but if your MAGI from two years earlier (2024) exceeded $106,000 (single) or $212,000 (married filing jointly), you’ll pay an extra $69.90 per month for Part B plus a Part D surcharge. At the next tier ($133,000–$166,000 single), the surcharge jumps to $174.50. That translates to an additional $2,094 to $4,188 per year per person, not a trivial sum. And because IRMAA uses a two-year lookback, one large withdrawal or conversion in 2024 can haunt your 2026 premiums.
This “tax cliff” means your withdrawal sequencing must be precise. For example, if a married couple’s expected income is $210,000, a $3,000 capital gain from selling appreciated stock could push them over the threshold, costing them more in premiums than the gain itself. The strategy: in low-income years, harvest capital gains up to the top of the 0% bracket (which in 2026 for joint filers is $94,100 in taxable income after deductions), and use QCDs to lower AGI.
State taxes also interact here. A retiree in Colorado paying a flat 4.4% state income tax will see an effective marginal rate of 26.4% (22% federal + 4.4% state) on the same income, making the IRMAA cliff even steeper. Coordinating withdrawals to stay just below the MAGI threshold becomes borderline mandatory in higher-tax states. (I once saw a client accidentally trigger IRMAA with a $2,000 stock sale, and the surcharge ate up 18 months of savings on the sale.)
But, and this is the honest concession, paying IRMAA for a year or two can be a rational choice if it enables a large Roth conversion that dramatically reduces future taxes and RMDs. The key is to run the numbers with a multi-year projection, something AI retirement planning tools now handle with surprising accuracy.
Key Takeaway: A single withdrawal that lifts MAGI above $106,000 (single) or $212,000 (joint) can trigger Medicare IRMAA surcharges of $2,094+ per year, as outlined by Medicare’s IRMAA tables. Smoothing withdrawals under these cliffs is a central pillar of tax-smart sequencing.
Frequently Asked Questions
What is the best order to withdraw retirement funds to minimize taxes?
There’s no universal best order, but many retirees benefit from a “fill the bracket” approach: take traditional IRA withdrawals up to the top of the 12% bracket before age 73, blend with taxable sales for capital gains, and save Roth for later years to control income. Annual modeling is essential because the optimal mix shifts with market returns and tax law.
How does delaying Social Security affect my withdrawal sequencing?
Delaying Social Security to age 70 creates several more low-income years, letting you withdraw or convert traditional accounts at rates as low as 0% to 12%. If you claim early, that income fills your lower brackets, leaving less room for tax-efficient IRA distributions. This single decision can swing lifetime taxes by tens of thousands of dollars.
Should I convert my IRA to a Roth before or after I retire?
Ideally, convert in the gap years between retirement and age 73, especially before claiming Social Security, when your taxable income is lowest. Converting while still working often pushes you into a higher bracket, diminishing the benefit. However, if you plan to relocate to a state with no income tax, delaying until after the move can add extra savings.
Can retirement withdrawals increase my Medicare premiums?
Yes. Withdrawals from tax-deferred accounts are counted in your Modified Adjusted Gross Income, which determines if you pay Medicare IRMAA surcharges. The 2026 surcharge kicks in when your 2024 MAGI exceeded $106,000 for single filers and $212,000 for couples. Even a one-year spike can trigger premiums that last the entire year.
How does my state’s tax law change the optimal withdrawal order?
States that exempt Social Security or pension income, or have no income tax, shift the advantage toward drawing from taxable or traditional accounts early. Conversely, high-tax states make Roth withdrawals more attractive and encourage delaying conversions until after a move. Always factor state tax into each account’s effective tax rate for your personal situation.
