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Most people spend decades accumulating wealth across several account types — a taxable brokerage here, a 401(k) there, maybe a Roth IRA and an HSA. Each bucket has different tax treatment. The question that determines tens of thousands of dollars in lifetime tax savings is: in what order do you draw them down?
The conventional wisdom — spend taxable first, then traditional accounts, then Roth last — is a reasonable default but often the wrong answer for FIRE retirees. FIRE planners retire decades before Social Security and RMDs arrive, which creates a low-income window where smarter sequencing can permanently lower lifetime taxes.
This article covers the three-bucket framework, the bracket-fill strategy, capital gains harvesting in low-income years, and why the “RMD tax bomb” lurking in large traditional accounts is the biggest long-term sequencing risk most FIRE planners underestimate.
Before sequencing, understand what you're working with. Every retirement account falls into one of three tax buckets, and each withdraws very differently:
Taxable brokerage — “already taxed”
You invested after-tax dollars, so only the growth is taxable at withdrawal. Long-term capital gains (assets held 12+ months) are taxed at 0%, 15%, or 20% — well below ordinary income rates. At low income levels, you can realize substantial gains at 0% federal tax.
Tax-deferred — traditional 401(k) and traditional IRA
You got a deduction when you contributed. Every dollar withdrawn is ordinary income — taxed at your marginal rate that year. Required Minimum Distributions (RMDs) begin at age 73, forcing withdrawals whether you want them or not. Large balances here are the source of the “RMD tax bomb.”
Tax-free — Roth IRA, Roth 401(k), and HSA
You paid taxes going in. Qualified withdrawals — contributions always, earnings after age 59½ with a 5+ year account — come out completely tax-free. HSA triple-tax-advantage: deductible contributions, tax-free growth, tax-free withdrawal for qualified medical expenses at any age. No RMDs on Roth IRAs.
The standard advice is to spend taxable accounts first (letting tax-advantaged money compound longer), then draw down traditional accounts, and leave Roth until last as a tax-free inheritance or late-retirement buffer. For a 65-year-old who just retired, this is often reasonable.
For a 45-year-old FIRE retiree, it can be a costly mistake.
Conventional order
Leaves large traditional balances to compound and trigger high RMDs at 73.
FIRE retiree playbook
Harvests low tax rates during the early-retirement income valley.
In early retirement, your taxable income is often near zero — no salary, no Social Security yet, minimal dividends. The 10% and 12% federal brackets sit mostly empty. The bracket-fill strategy deliberately fills that space with traditional IRA withdrawals, paying ordinary income tax now at 10–12% rather than leaving the balance to be taxed at 22–37% once RMDs force it out.
| Bracket | Single (2025) | MFJ (2025) | Action |
|---|---|---|---|
| 10%Target | $0 – $11,925 | $0 – $23,850 | Free conversion / withdrawal space |
| 12%Target | $11,925 – $48,475 | $23,850 – $96,950 | Fill with traditional IRA withdrawals |
| 22% | $48,475 – $103,350 | $96,950 – $206,700 | Stop here — use Roth for the rest |
| 24%+ | $103,350+ | $206,700+ | Avoid if possible |
The standard deduction ($15,000 single / $30,000 MFJ in 2025) reduces your taxable income before brackets apply — which means you can withdraw up to $30,000 single or $60,000 MFJ from a traditional IRA at zero federal income tax by using the standard deduction as a shield. Everything above that fills the 10% bracket, then 12%, before you switch to Roth for the remainder of your spending needs.
ACA MAGI ceiling
If you're on an ACA marketplace plan before Medicare, your MAGI determines your subsidy eligibility. Traditional IRA withdrawals count as MAGI. Crossing 400% of the Federal Poverty Level (~$58,320 single in 2025) causes a cliff loss of all premium tax credits. Many early retirees deliberately cap traditional withdrawals to stay just under this threshold, even if the bracket would permit more.
In years when your taxable income stays below ~$48,350 (single, 2025) or ~$96,700 (MFJ), long-term capital gains are taxed at 0% federal. This creates an opportunity that most high-earning workers never access: selling appreciated taxable assets and realizing gains for free.
Sell and re-buy to step up your cost basis
Sell a position at a gain, pay $0 federal tax on the gain, and immediately repurchase. Your cost basis resets to the current price, eliminating the embedded taxable gain permanently. This is “gain harvesting” — the mirror image of tax-loss harvesting. Note: no wash-sale rule applies to gains.
Use taxable account spending to stay in the 0% zone
In a bracket-fill year, sell long-term appreciated shares from your taxable account to cover spending while traditional IRA withdrawals fill the 12% bracket. Both can happen in the same year as long as total taxable income stays under the 0% threshold for LTCG.
Watch: ordinary income stacks below capital gains
The IRS applies capital gains rates to the “top” of your income, not independently. If you have $30K of ordinary income (traditional IRA withdrawal) and $20K of LTCG, only the $20K that sits above the threshold gets pushed into the 15% LTCG bracket. In 2025, that threshold is $48,350 (single), so the first $18,350 of gains would be at 0% and the remaining $1,650 at 15%. Plan accordingly.
Required Minimum Distributions begin at age 73. The IRS calculates your RMD each year by dividing your traditional account balance by a life expectancy factor — which means a $2M traditional IRA at age 73 generates roughly $77,000 of mandatory ordinary income, whether you need the money or not. Add Social Security (which also counts as income), and you could find yourself suddenly in the 22–24% bracket with no levers to pull.
| Traditional IRA at 73 | Approx. RMD (÷26.5) | + SS income: likely bracket |
|---|---|---|
| $500K | ~$19K | 10–12% |
| $1M | ~$38K | 12–22% |
| $1.5M | ~$57K | 22%+ |
| $2M | ~$75K | 22–24%+ |
| $3M+ | ~$113K+ | 24–32% |
The asymmetry is stark: every dollar of traditional IRA balance left to compound is a future RMD tax obligation. The bracket-fill strategy during the 55–72 window deliberately shrinks the traditional balance to keep future RMDs manageable. A FIRE retiree who retires at 50 and has 23 years of bracket-filling before RMDs start is in a dramatically better position than one who follows the “let Roth compound” conventional wisdom.
Consider an early retiree who retires at 55 with $1.5M — 70% in traditional IRA, 20% Roth, 10% taxable brokerage — and needs $60K/year in spending. Here's the optimal sequence:
| Age | Primary source | Amount | Why |
|---|---|---|---|
| 55 | Taxable brokerage (LTCG at 0%) | $18K | Sell appreciated shares. Long-term gains taxed at 0% under $48K income. |
| 56 | Traditional IRA (bracket-fill to 12%) | $33K | Withdraw up to the top of the 12% bracket. Also converts future RMD exposure. |
| 57 | Roth IRA (principal) | $9K | Cover the remaining $9K of annual spending from Roth — zero tax, no penalty. |
| 58 | Traditional IRA + Roth | $42K + $18K | Bracket expands slightly with inflation. Fill 12% bracket, cover rest from Roth. |
| 59 | All sources penalty-free | Any mix | Age 59½ — 10% early withdrawal penalty gone. Full flexibility begins. |
This sequence minimizes taxes during the low-income window, steadily reduces the traditional IRA balance before RMDs, and reserves Roth for tax-free gap-filling. The taxable account depletes first — as planned — since it has the shallowest tax advantage of the three buckets.
The chart below shows illustrative 10-year federal tax estimates for three withdrawal strategies applied to the same $1.5M portfolio ($60K/yr spending). The “conventional” strategy leaves the largest tax bill; bracket-filling cuts that significantly; pure Roth-first minimizes near-term taxes but leaves the traditional balance to compound into a larger future RMD problem.
Estimated federal taxes paid over 10 years — illustrative
Illustrative only. Assumes single filer, $60K/yr spending, $1.5M portfolio (70% traditional / 20% Roth / 10% taxable). Conventional = taxable then traditional then Roth. Bracket-fill = traditional to 12% ceiling, Roth covers remainder. Roth-first = Roth then taxable then traditional. Actual taxes depend on your specific mix, state taxes, and income. Not financial advice.
The Roth-first caveat
Roth-first has the lowest near-term tax bill, but it depletes your tax-free buffer while leaving the traditional balance compounding toward a larger RMD at 73. For a retiree with 18+ years before RMDs, this tradeoff is often unfavorable in the long run. The bracket-fill approach captures the best of both worlds: tax savings now and RMD management for later.
Your account mix snapshot
Add your accounts in the Plan drawer to see your personalized withdrawal sequencing analysis.
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