Bucket Strategies for Drawing Down Accounts

The bucket strategy organizes a retirement portfolio into time-horizon-based segments — short, medium, and long. Each bucket has an investment profile suited to when its dollars will be spent. The approach is more about behavior than return optimization, but for retirees who otherwise panic-sell at the bottom, that is the entire point.

The three-bucket structure

• Bucket 1 — Cash and short-term. 1–2 years of expected expenses, held in money market, high-yield savings, and ultra-short Treasury bills. Pays modest interest; goal is liquidity and zero volatility.
• Bucket 2 — Bonds and fixed income. Years 3–10 of expected expenses, held in intermediate-term Treasury bonds, TIPS, investment-grade corporates, and a small allocation to high-yield. Goal is income generation and modest growth with limited downside.
• Bucket 3 — Equities and growth. Years 10+ of expected expenses, held in diversified equity index funds (U.S. large/mid/small, developed and emerging international, REITs). Goal is long-term real return; expects volatility.

Worked example

A retiree with $1.5M and $60,000/year expected gross expenses, allocating to a 2/8/n bucket structure:

• Bucket 1: $120,000 (2 years × $60K) in cash/T-bills
• Bucket 2: $480,000 (8 years × $60K) in intermediate bonds
• Bucket 3: $900,000 (10+ years' coverage) in equities

Allocation roughly equates to 40% equity / 60% bond+cash — conservative for a 65-year-old by most standard rules but appropriate for someone managing for sequence risk.

How withdrawals work

Withdrawals come from Bucket 1. As Bucket 1 depletes, it is refilled from Bucket 2. Bucket 2 is refilled from Bucket 3 only in years when equities have performed well. In a bear market, Bucket 2 continues funding Bucket 1 and Bucket 3 is left alone to recover.

The refill discipline is the mechanic that solves sequence-of-returns risk: equities are not forced to liquidate at lows because the spending need can be funded from bonds for 8–10 years.

Refill rules

Various authors have proposed mechanical refill triggers:

• Calendar refill. Refill Bucket 1 every January from Bucket 2; refill Bucket 2 every January from Bucket 3 if equities are above a moving-average trendline.
• Threshold refill. Refill Bucket 2 from Bucket 3 only when Bucket 3 exceeds X% of its starting allocation, or when Bucket 2 falls below Y% of its starting allocation.
• Opportunistic refill. Refill when equities are at all-time highs, regardless of calendar.

Most published research suggests the specific refill rule matters less than the discipline of having one and following it. The behavioral commitment is what produces the result.

The academic critique

Critics (notably Estrada in Journal of Portfolio Management, 2018) argue that bucket strategies do not strictly outperform a constant-allocation portfolio rebalanced annually, when both are run through historical sequences. The math is approximately equivalent because rebalancing from bonds to equities during a bear market is functionally identical to "refilling from Bucket 2."

The counter-argument: humans do not actually rebalance during bear markets. They freeze, or worse, sell equities at the bottom because they are afraid the bond allocation will not be enough. The bucket framing prevents that mistake by giving each dollar a job and a time horizon, making the rebalancing feel mechanical and inevitable.

Tax-aware bucket placement

The bucket strategy applies across all account types. A typical structure:

• Bucket 1 (cash) in the taxable brokerage — most accessible.
• Bucket 2 (bonds) in Traditional IRA/401(k) — tax-deferred is the natural home for interest income.
• Bucket 3 (equities) split between Roth (highest expected return / never taxed) and taxable (step-up in basis on death).

This places asset location and bucket strategy in alignment — see our Asset Location article for the underlying logic.

Common mistakes

• Holding too much in Bucket 1. 5+ years of cash represents real opportunity cost — at 3% inflation and 4% expected real equity return, the gap is roughly 4% per year on whatever sits in cash. Two years is usually plenty.
• Failing to refill. Letting Bucket 1 deplete to zero forces a sale from Bucket 3 at whatever price prevails, defeating the strategy.
• Treating the buckets as independent portfolios. Total household allocation is what drives total return. The bucket framing organizes the allocation; it does not change the underlying math.
• Forgetting RMDs. Once RMDs begin (age 73 or 75), the IRS dictates a minimum withdrawal from Traditional accounts that may exceed Bucket 1 needs. Use QCDs, reinvest in taxable, or reallocate buckets to accommodate.

Sources

• Harold Evensky, Wealth Management: A Concise Guide to Financial Planning and Investment Management (Bloomberg Press, 2011).
• Christine Benz, "The Bucket Approach to Retirement Allocation," Morningstar (multiple articles, ongoing): morningstar.com
• Javier Estrada, "From Failure to Success: Replacing the Failure Rate," Journal of Portfolio Management, 2018.
• Michael Kitces, "Defining Sustainable Retirement Spending Across Different Withdrawal Strategies": kitces.com
• Wade D. Pfau, Safety-First Retirement Planning (Retirement Researcher Media, 2019).

RetirementCheck101 lets you model bucket-style allocations against your spending plan. Explore the free educational tool.