Bucket Strategy for Decumulation: 3-5-30 Year Allocations

Sequence-of-returns risk is the single most destructive force in early retirement. A retiree who withdraws $95,000 per year from a $1,150,000 portfolio and hits a 35% equity drawdown in years one through three can see their 30-year success probability drop from 92% to below 55%, according to Monte Carlo simulations using historical US equity and bond returns. The same average return over 30 years, experienced in a different order, produces a completely different outcome. The bucket strategy exists to neutralize this risk by ensuring you never sell equities during a downturn to fund current spending.

The three-bucket framework: 3-5-30 year structure

The numbering — 3, 5, and 30 — refers to the time horizons each bucket covers. The asset allocation within each bucket follows directly from how soon you need the money.

Bucket 1: Years 1 to 3 — cash and near-cash

This bucket holds three years of net portfolio withdrawals in high-yield savings accounts, money market funds, short-term Treasury bills (T-bills), or short-term CDs. “Net” means total annual spending minus guaranteed income sources (Social Security, pension, annuity payments). If your household spends $95,000 per year and Social Security provides $52,000, the annual portfolio draw is $43,000. Bucket 1 holds $129,000 (3 × $43,000). This money earns modest returns — currently 4.5% to 5.0% in money market funds as of early 2026 — but its job is not growth. Its job is certainty. No matter what happens in the stock or bond markets, you have three years of living expenses accessible within days.

Bucket 2: Years 4 to 8 — intermediate bonds and income

This bucket holds five years of net withdrawals in intermediate-term bond funds, Treasury Inflation-Protected Securities (TIPS), investment-grade corporate bonds, or conservative balanced funds (60/40 or 50/50). For our $43,000 annual draw, Bucket 2 holds $215,000. These assets generate income (coupon payments, dividends) and moderate capital appreciation, and they are significantly less volatile than equities. In a severe equity bear market, intermediate bonds typically hold value or appreciate as investors flee to safety and the Federal Reserve cuts rates. Bucket 2’s role is twofold: provide a buffer beyond Bucket 1, and serve as the refill source for Bucket 1 when it runs low.

Bucket 3: Years 9 to 30+ — equities and growth

Everything not in Buckets 1 and 2 goes into Bucket 3: US equities, international equities, REITs, and other growth-oriented assets. For a $1,150,000 portfolio with $129,000 in Bucket 1 and $215,000 in Bucket 2, Bucket 3 holds $806,000 — roughly 70% of the total portfolio. This is the engine that funds the next 20 to 30 years of retirement. With an 8- to 30-year horizon before these dollars need to be spent, Bucket 3 can absorb multi-year drawdowns and still recover. The S&P 500 has recovered from every bear market in history within 5 years (and most within 2 to 3 years), which is why the 8-year buffer provided by Buckets 1 and 2 is sufficient protection.

Refilling the buckets: the rebalancing discipline

The bucket strategy is not set-and-forget. As you spend down Bucket 1, it must be refilled — and the refill mechanics determine whether the strategy actually protects you or reintroduces the sequence risk it was designed to eliminate.

Rule 1: Refill Bucket 1 from Bucket 2 on a fixed schedule. Once per year (typically in January), move one year’s worth of spending from Bucket 2 into Bucket 1. This maintains the 3-year cash buffer. Bucket 2 shrinks from 5 years to 4 years of spending.

Rule 2: Refill Bucket 2 from Bucket 3 only when equities are at or above their recent high. This is the key discipline. If the S&P 500 is within 10% of its 52-week high, sell equities from Bucket 3 to replenish Bucket 2 back to its 5-year target. If equities are down 15% or more from recent highs, do not refill Bucket 2 — let Bucket 2 absorb the shortfall and wait for recovery. The 8-year combined buffer (Buckets 1 + 2) gives you time to wait.

Rule 3: Never sell Bucket 3 equities during a bear market to fund current spending. This is the entire point of the strategy. If you break this rule, you have eliminated the structural protection that bucketing provides.

Layering in the tax accounts: where each bucket lives

Most bucket strategy guides treat the portfolio as a single pool. In reality, retirees hold assets across three account types with different tax treatment, and where you hold each bucket matters as much as what is in it.

The general principle: hold your lowest-growth assets (cash, short-term bonds) in taxable accounts where you need access, hold bonds and conversion-target equities in traditional accounts, and hold your highest-growth equities in Roth accounts where they compound tax-free.

Worked example: Linda and James, both age 63

Linda is a former marketing director; James is a former mechanical engineer. Both retired at 63. Their financial picture:

• James’s 401(k): $480,000 (traditional, rolled to IRA)
• Linda’s traditional IRA: $310,000
• Roth IRAs: $110,000 combined
• Joint taxable brokerage: $250,000
• Total portfolio: $1,150,000
• Pre-retirement household income: $135,000
• Social Security at FRA (67): $52,000/year combined ($30,000 James, $22,000 Linda)
• Annual spending target: $95,000
• No pension

Step 1: Size the buckets

They plan to delay Social Security to age 67 (FRA). From age 63 to 67, the full $95,000 annual spend comes from the portfolio. After 67, Social Security covers $52,000 and the portfolio covers $43,000.

Ages 63–66 (pre-Social Security): Bucket 1 needs $285,000 (3 years × $95,000). Bucket 2 needs an additional $95,000 (one more year of full draw before Social Security starts at 67). At 67, the draw drops to $43,000/year.

Ages 67+ (Social Security active): Bucket 1 needs $129,000 (3 × $43,000). Bucket 2 needs $215,000 (5 × $43,000).

At retirement (age 63), they construct the initial buckets knowing the first four years are the expensive bridge period:

• Bucket 1: $285,000 in money market and short-term T-bills (covers ages 63–66)
• Bucket 2: $215,000 in intermediate bonds and TIPS (covers the transition to post-SS spending)
• Bucket 3: $650,000 in diversified equities (65% US total market, 25% international, 10% REITs)

Step 2: Choose the withdrawal sequence

Ages 63–66 (bridge years): Draw $95,000/year from the taxable brokerage account first. The $250,000 taxable balance covers 2.6 years of spending. After the taxable account is depleted (mid-year 65), they shift to traditional IRA withdrawals for the remaining bridge period. Because they have no other income, IRA withdrawals fill the lower tax brackets: the standard deduction of $32,300 (married filing jointly, 2026) plus the 10% bracket ($23,850) and 12% bracket (up to $94,300) — meaning $95,000 in total IRA withdrawals produces a federal tax bill of approximately $7,100.

The Roth conversion opportunity: During these same bridge years, their taxable income is low enough to execute Roth conversions. After withdrawing $95,000 for spending, they can convert an additional $95,000 to $111,000 from the traditional IRA to the Roth IRA and stay within the 22% bracket (up to $190,750 for MFJ in 2026) while remaining well below the $206,000 IRMAA threshold. Over four years of conversions (ages 63–66), they move $380,000 to $444,000 from traditional to Roth, paying taxes at 12% to 22% instead of the 24%+ rates they would face later when Social Security, RMDs, and other income stack together.

Ages 67–72 (Social Security active, pre-RMD): Social Security provides $52,000/year (up to 85% taxable, depending on provisional income). They draw $43,000 from the portfolio for spending. Continued Roth conversions of $40,000 to $60,000 per year keep total MAGI below $206,000. Bucket 1 is refilled annually from Bucket 2, and Bucket 2 is refilled from Bucket 3 when equities are healthy.

Ages 73+ (RMD phase): Under IRC Section 401(a)(9) as amended by SECURE 2.0, RMDs begin at 73. Thanks to the Roth conversions, their traditional IRA balance at 73 is projected at $250,000 to $350,000 (down from $790,000 combined at retirement). The first-year RMD at 73 using the Uniform Lifetime Table divisor of 26.5 is approximately $9,400 to $13,200 — far smaller than the $29,800 to $36,800 RMD they would owe without conversions. The smaller RMDs keep total income lower, reduce the percentage of Social Security that is taxable, and help them stay below IRMAA thresholds through their 80s and 90s.

Step 3: Handle the bear market scenario

Suppose equities drop 30% in year two of retirement (age 64). Bucket 3 falls from $650,000 to approximately $455,000. What happens?

• Bucket 1 still has roughly $190,000 after one year of spending ($285,000 − $95,000). Two more years of spending are fully covered without touching equities.
• Bucket 2 remains at $215,000 in bonds. Bond values likely held steady or rose as rates fell during the equity downturn.
• Bucket 3 is not touched. No equities are sold. The recovery happens over the next 2 to 4 years.
• Roth conversions continue — and at depressed traditional IRA equity values, each converted dollar buys more future tax-free growth. Converting $100,000 of equities at a 30% drawdown means converting assets that may bounce back to $143,000, with all recovery growth happening inside the Roth.

By the time Bucket 1 needs refilling (year 4 or 5), equities have likely recovered, and normal refill mechanics resume. The bear market was painful on paper but had zero impact on their spending or lifestyle.

Social Security claiming: how it changes bucket sizing

The claiming decision is the largest single variable in bucket sizing. Here is how the three common claiming ages affect Linda and James’s buckets:

Claiming at 62 eliminates the bridge period but requires $469,000 in Buckets 1 and 2 on an ongoing basis — 41% of the portfolio permanently locked in low-growth assets. Claiming at 70 maximizes guaranteed income and shrinks ongoing Buckets 1 + 2 to just $244,000 (21% of portfolio), leaving far more in Bucket 3 for growth. The catch: it requires $665,000 in bridge funding from ages 63 to 70, which nearly exhausts Buckets 1 and 2 and demands careful management during the bridge period.

For most couples with portfolios in the $1M to $2M range, claiming at FRA (67) is the balanced choice — it keeps the bridge period manageable (4 years) while providing enough guaranteed income to keep the ongoing portfolio draw at a sustainable 3.7% rate.

IRMAA and the bucket strategy: the invisible tax

Medicare Income-Related Monthly Adjustment Amounts (IRMAA) are surcharges on Part B and Part D premiums triggered when your modified adjusted gross income exceeds $103,000 (single) or $206,000 (married filing jointly) based on your tax return from two years prior. The first IRMAA tier adds approximately $1,050 per person per year ($2,100 for a couple). Higher tiers escalate quickly.

The bucket strategy interacts with IRMAA through the Roth conversion sizing decision. Every dollar of Roth conversion adds to MAGI. If you are converting $100,000/year during the bridge period, your total MAGI is $100,000 (conversion) plus $95,000 (spending withdrawal if from traditional accounts) — potentially $195,000, which is just below the $206,000 threshold. Add a $15,000 capital gain from rebalancing the taxable account and you are at $210,000 — above the IRMAA cliff, costing an extra $2,100/year in Medicare surcharges two years later.

The fix: fund bridge-period spending from the taxable brokerage account (not the IRA) so that only the Roth conversion hits MAGI. Taxable account withdrawals generate long-term capital gains, which do count toward MAGI, but the gain portion is typically much smaller than the full withdrawal amount. A $95,000 withdrawal from a taxable account with a $70,000 cost basis generates only $25,000 of MAGI-relevant gains, compared to $95,000 of MAGI from an equivalent IRA withdrawal.

Common bucket strategy mistakes

• Holding too much in Bucket 1. Five or six years of cash earning 4% to 5% instead of three years means hundreds of thousands of dollars missing out on equity returns over a 30-year retirement. Three years is enough protection; more is a drag.
• Refilling Bucket 2 from Bucket 3 during a bear market. This is the single most common way retirees reintroduce the sequence risk the bucket strategy was designed to eliminate. If equities are down 25%, let Bucket 2 absorb the shortfall. Wait for recovery.
• Ignoring account type in the refill sequence. Mechanically selling traditional IRA equities to refill Bucket 1 in a year when you are also doing Roth conversions can stack taxable income and blow through an IRMAA bracket. Match the refill to the most tax-efficient source that year.
• Treating all three buckets as one rebalancing pool. Traditional rebalancing (sell winners, buy losers) can conflict with bucket rules. You are not rebalancing a single portfolio — you are managing three segments with different time horizons and different refill rules.
• Forgetting that RMDs are a forced Bucket 1 refill. Once RMDs begin at 73, cash arrives whether you planned for it or not. If you do not account for RMDs in your refill schedule, Bucket 1 may overflow while Bucket 3 shrinks faster than intended.

Key takeaways

• The bucket strategy divides your portfolio into three time-segmented pools: 3 years of cash (Bucket 1), 5 years of bonds (Bucket 2), and the remainder in equities (Bucket 3). The core purpose is to ensure you never sell stocks during a bear market to fund current spending — eliminating sequence-of-returns risk, the largest threat to early-retirement portfolios.
• Where each bucket lives across account types matters as much as what is in it. Hold cash and tax-efficient equities in taxable accounts, bonds and conversion-target equities in traditional IRAs, and highest-growth equities in Roth IRAs where they compound tax-free under IRC Section 408A with no RMDs for the original owner.
• The Roth conversion window between retirement and age 73 is the most valuable tax-planning period of your life. Convert traditional IRA dollars to Roth each year up to the IRMAA threshold ($206,000 MAGI for MFJ in 2026) to shrink future RMDs under IRC Section 401(a)(9), reduce the taxable percentage of Social Security benefits, and eliminate IRMAA surcharges in your 70s and 80s. Fund bridge-period spending from taxable accounts to preserve conversion headroom.
• Social Security claiming age is the single largest variable in bucket sizing. Delaying from 62 to 70 increases the guaranteed income floor by 77%, shrinking the annual portfolio draw and allowing more of the portfolio to remain in Bucket 3 for long-term growth. For most couples with $1M to $2M portfolios, claiming at FRA (67) balances the bridge-period cost against the long-term income benefit.
• Refill discipline is the strategy. Replenish Bucket 1 from Bucket 2 annually. Replenish Bucket 2 from Bucket 3 only when equities are near recent highs. Never sell Bucket 3 equities during a downturn. Once RMDs begin, treat them as forced refills and adjust the schedule accordingly. Breaking these rules reintroduces the sequence risk the bucket strategy was built to eliminate.