Retirement Withdrawal Order: Which Accounts to Tap First and Why

Conventional / "Roth Last"

The conventional wisdom: deplete taxable accounts first (minimal tax drag), then traditional accounts (ordinary income), and preserve Roth accounts as long as possible to maximize tax-free compounding.

The logic: Taxable accounts generate ongoing taxes (dividends, capital gains distributions) each year you hold them. Drawing them down first reduces this annual tax drag. Traditional IRA balances are mandatory anyway (RMDs) — drawing them down organically over time avoids a forced acceleration. Roth accounts, which have zero RMDs and tax-free growth, benefit most from the longest possible compounding period.

When it works well: Early retirement with significant taxable account balances, modest traditional IRA size (limited RMD concern), and desire for maximum Roth growth for heirs or very late life. Works especially well when taxable accounts hold appreciated assets whose unrealized gains can be recognized at the 0% or 15% capital gains rate during low-income years.

When it fails: If the traditional IRA is very large, deferring its drawdown until RMDs begin creates a forced income spike at 73+ that pushes the retiree into higher brackets and triggers IRMAA. The Roth-last strategy can inadvertently build a large RMD bomb.

Traditional / Pre-Tax First

Draw from traditional accounts first — before RMDs are required — to reduce the balance that will be subject to mandatory distributions at 73. The goal is to intentionally "drain" the traditional IRA during a lower-tax period rather than be forced to withdraw it at higher income levels later.

The logic: A retiree who stops working at 62 has potentially 11 years (62–73) before RMDs begin. If the traditional IRA is large, letting it grow untouched for 11 more years will produce enormous RMDs. Withdrawing from traditional accounts early — ideally up to the top of a low bracket — reduces that future forced income.

Paired with Roth conversions: This strategy is often combined with Roth conversion — instead of taking traditional IRA withdrawals for spending only, take additional withdrawals and convert them to Roth. This achieves the drain goal while simultaneously building Roth balances.

When it works well: Retirees with large traditional IRA balances relative to spending needs, who have a meaningful low-income window before Social Security and RMDs compound together. Also ideal when current marginal rates are lower than expected future rates (e.g., before sunset of 2017 TCJA provisions if they expire).

Proportional (All Accounts Simultaneously)

Rather than fully draining one account type before touching another, the proportional approach maintains your target asset allocation and tax diversification by withdrawing from all three account types each year in proportion to their size relative to your total portfolio.

The logic: Portfolio rebalancing theory suggests that withdrawing proportionally maintains your intended risk/tax allocation year to year. It also preserves optionality — you always have assets in each bucket, allowing adjustments based on changing tax laws or life circumstances.

The tax efficiency concern: Proportional withdrawal does not optimize for bracket management. Pulling from all accounts simultaneously may result in higher taxes in some years than necessary — for example, withdrawing from a Roth account in a year when income is already low wastes low-rate space that could have been used for a traditional withdrawal instead.

When it works well: Retirees who value simplicity and consistency over tax optimization, those with roughly equal balances across account types, or those who dislike the complexity of multi-year bracket management.

Bracket-Filling / Tax-Rate Smoothing

This is the most sophisticated — and generally most tax-efficient — approach. The goal is to fill your current tax bracket exactly to the top each year, drawing from whatever account type achieves that result, while using Roth withdrawals and taxable basis to fill remaining spending needs without additional taxable income.

The annual calculation:

• Estimate all non-discretionary income: Social Security (85% taxable), pension, dividends, interest, rental income.
• Subtract the standard deduction (or itemized deductions) to get current taxable income.
• Identify the gap between current taxable income and the top of your target bracket (e.g., 22% for a married couple ends at ~$201,050 of taxable income in 2025).
• Fill that gap with traditional IRA withdrawals — possibly as Roth conversions if spending needs are otherwise met.
• Cover any additional spending from Roth accounts or taxable accounts at basis (capital gains only).

The result: Every year, taxes are paid at the lowest possible effective rate on the maximum amount of traditional account balance. The Roth account grows tax-free while the traditional account is systematically reduced in a controlled, bracket-aware way.

When it works well: Retirees with large traditional IRA balances who have the discipline to run annual income projections, a financial plan that includes multi-year tax modeling, and access to both Roth and taxable accounts to fill spending gaps above the bracket ceiling.

Three-Bucket Approach

The bucket strategy organizes assets by time horizon rather than account type. Bucket 1 (cash / money market) covers 1–2 years of spending. Bucket 2 (bonds, CDs, fixed income) covers years 3–10. Bucket 3 (equities, growth assets) covers needs beyond 10 years.

The behavioral benefit: In a severe market downturn, a retiree knows that Bucket 1 covers immediate expenses and Bucket 2 covers the next several years — eliminating panic selling from Bucket 3. The long time horizon for equities allows them to recover without being forced to sell at depressed prices.

Replenishment: When Bucket 1 runs low, it is refilled from Bucket 2 (selling bonds or maturing CDs). When Bucket 2 runs low, it is replenished from Bucket 3 (selling equities, ideally in up markets). Dividends and interest naturally flow into Bucket 1 and 2.

Tax integration: The bucket strategy defines when to spend from each asset. The bracket-filling strategy defines how much from each account type. They are complementary, not competing, frameworks — the best implementations use both simultaneously.

When it works well: Retirees who experience significant anxiety about market volatility and want a clear mental model for "my spending is safe even if the market falls 40%." Also appropriate for those who prefer a rule-based, non-reactive withdrawal discipline.