Why Allocation Differs Between Accumulation and Drawdown Phases
Post-retirement investing represents a fundamental shift from the 'growing assets' phase to the 'preserving and drawing down assets' phase. The most critical element in this transition is reviewing your asset allocation. During working years, regular salary income meant market declines were 'opportunities to buy cheap,' but after retirement, when income sources are limited to pensions and asset drawdowns, declines become 'losses you can't wait to recover from.' When a significant decline occurs in the first few years after retirement, the double impact of drawdowns and market losses causes assets to deplete rapidly, making subsequent recovery extremely difficult. This is known as sequence-of-returns risk - the greatest threat in post-retirement investing.
The impact of sequence-of-returns risk becomes clear when you look at the numbers. If you retire with 30 million yen in assets and withdraw 1.2 million yen annually, and returns average -10% per year for the first 5 years, your assets will be depleted within 20 years even if returns average +10% per year thereafter. Conversely, if the first 5 years average +10% and the later years average -10%, the assets last over 30 years. Even with the same average return, the outcome changes dramatically depending on whether declines are concentrated in the early years.
Managing Drawdown Risk with the Bucket Strategy
The bucket strategy is widely recommended for post-retirement asset allocation. It divides assets into three 'buckets.' Bucket 1 (short-term: 1-3 years of living expenses) consists of cash and short-term bonds, securing funds that can be drawn down reliably regardless of market conditions. Bucket 2 (medium-term: years 4-10) is composed primarily of bonds that generate stable income. Bucket 3 (long-term: funds needed 10+ years out) is centered on equities to pursue growth and maintain purchasing power against inflation.
The operating rules for the bucket strategy are straightforward. practical guides to the bucket strategy explain that daily living expenses are drawn from Bucket 1, and when the equity market is performing well, profits from Bucket 3 are used to replenish Buckets 2 and 1. When the market is declining, you live off the cash in Bucket 1 and wait for equities to recover. This mechanism eliminates the need to sell equities during downturns, significantly reducing the impact of sequence-of-returns risk.
Guidelines for Adjusting Allocation Ratios by Age
The basic approach to post-retirement asset allocation is to gradually become more conservative with age. Immediately after retirement (ages 60-65), a rough guideline is 40-50% equities, 30-40% bonds, and 10-20% cash. In your 70s, adjust to 30-40% equities, 40-50% bonds, and 15-20% cash. From your 80s onward, shift to an even more conservative 20-30% equities, 40-50% bonds, and 20-30% cash. However, these are only guidelines - the optimal allocation varies depending on pension income levels, health status, and inheritance intentions.
An important point is that equities should not be reduced to zero even after retirement. books on post-retirement portfolio design emphasize that the average life expectancy for a 65-year-old retiree is approximately 20-25 years, and the growth power of equities is essential to combat inflation over this period. Moving all assets into deposits and bonds risks a year-over-year decline in real living standards due to inflation-driven loss of purchasing power. Understanding the paradox that seeking too much safety can itself become a risk is crucial.
Next Actions for Designing Post-Retirement Asset Allocation
To make your post-retirement asset allocation concrete, first accurately calculate the gap between your annual required living expenses and pension income (your annual withdrawal amount). If pension income is 150,000 yen per month and living expenses are 250,000 yen per month, the annual withdrawal amount is 1.2 million yen. Secure 3 years' worth of this amount (3.6 million yen) as cash in Bucket 1, allocate 4-10 years' worth (4.8-8.4 million yen) to bond funds in Bucket 2, and place the remainder in equity funds in Bucket 3. Use a compound interest calculator to simulate whether this allocation can sustain 30 years of withdrawals.
After receiving retirement benefits, we recommend transitioning to your target allocation gradually over 6-12 months rather than investing the entire amount at once. The first few years after retirement carry the highest sequence-of-returns risk, and a crash immediately after a lump-sum investment can be devastating. Also, set a fixed annual rebalancing date to review each bucket's balance and move funds according to your replenishment rules. In years when the equity market performs well, transfer profits from Bucket 3 to Buckets 1 and 2; in poor years, live off Bucket 1's cash and wait for equities to recover. Maintaining this discipline is the key to maximizing your asset longevity.