Education · Pillar
Retirement income planning
Published 2026-05-12 · Educational content; not investment advice.
Spending a portfolio is structurally different from accumulating one. In accumulation, time and contributions absorb volatility; drawdowns recover before they are realized. In distribution, withdrawals turn paper losses into permanent ones, and the order in which returns arrive matters in a way it never did during accumulation. This page covers the load-bearing concepts: sequence-of-returns risk, sustainable withdrawal frameworks, and the role of guaranteed income.
Sequence-of-returns risk
Consider two retirees with identical starting balances ($2,000,000), identical inflation-adjusted withdrawals ($80,000 per year, growing with CPI), and identical average annual returns over a 30-year retirement. The first retiree experiences a 30% drawdown in years 1 and 2, then a long recovery. The second retiree experiences a long expansion first and the 30% drawdown in years 25 and 26. Despite identical averages, the first retiree may exhaust the portfolio while the second retiree dies leaving a sizable estate.
The mechanism is simple. A withdrawal of $80,000 from a $2,000,000 portfolio is a 4% draw. The same $80,000 from a $1,200,000 portfolio is a 6.7% draw. Selling shares at depressed prices permanently removes them from the eventual recovery. The early- drawdown retiree never owns enough shares at the recovery point to catch up.
Sustainable withdrawal frameworks
Several frameworks attempt to translate sequence risk into a rule of thumb:
- Fixed real withdrawal ("4% rule"). Withdraw 4% of the initial balance in year one, then increase by inflation each year. Based on Bengen (1994) and later replications.
- Dynamic withdrawal (Guyton-Klinger guardrails). Adjust withdrawal up or down based on the portfolio's drift relative to the original plan; cap upside increases, floor downside cuts.
- Required minimum distribution-style. Withdraw a percentage of the current portfolio balance each year (using a table similar to IRS RMD tables). Forces lower draws after drawdowns and higher draws after expansions; never depletes mechanically.
- Floor-and-upside. Cover essential spending with guaranteed sources (Social Security + pensions + annuities + bond ladders); fund discretionary spending from a more aggressively invested portfolio.
None of these is the answer. They are starting points to be adapted to household-specific circumstances: spending flexibility, legacy goals, longevity expectations, health-care exposure, property income, business interests.
Guaranteed income reduces sequence risk
Income streams that do not depend on portfolio market value — Social Security, defined-benefit pensions, certain annuity contracts — reduce the dollar amount that must be withdrawn from the portfolio in any year. The lower the portfolio's role in meeting essential spending, the less sequence-of-returns risk applies. Many household plans benefit from explicitly splitting spending into "needs covered by guaranteed income" and "wants funded by the portfolio."
Social Security claiming timing is one of the highest-leverage retirement-income decisions. Benefits grow approximately 8% per year for delaying past Full Retirement Age up to age 70. The breakeven calculation is household-specific (longevity, spouse-survivor benefits, the marginal-tax-rate path) and worth rigorous analysis rather than default acceptance at first eligibility.
The bucket approach as an implementation
Many households implement sequence-risk management through a bucket framework:
- Bucket 1: 1–3 years of expected spending in cash and very short fixed income. Funds withdrawals without forced equity sales.
- Bucket 2: 3–10 years of expected spending in intermediate fixed income. Provides the second layer of insulation.
- Bucket 3: Remainder in equity-heavy growth assets. Has time to recover from drawdowns without funding near-term spending.
Rebalancing rules vary: some practitioners refill the near-term bucket from the long-term bucket only after recoveries; others rebalance on a calendar schedule. The framework is intuitive and widely used; it is not mathematically optimal across all scenarios.
Tax considerations in distribution
Which account a withdrawal comes from materially affects the tax owed and the long-run sustainability of the plan. Common sequencing patterns include "taxable first, tax-deferred next, Roth last" — preserving tax-protected growth as long as possible — but the calculus shifts when required minimum distributions begin (currently age 73 for most), when Roth conversions are part of the plan, and when charitable giving from an IRA via qualified charitable distributions is on the table. See the related page on tax-aware investing.
How Tandem Private Wealth will approach this
Post-registration, Tandem Private Wealth LLC plans to construct retirement-income plans on a household-specific basis, integrating the elements above with the household's tax situation, non-portfolio income, legacy goals, and behavioral tolerance for market volatility in the distribution phase. The firm does not currently offer investment advisory services. This page is educational and does not constitute investment advice.
Frequently asked questions
What is sequence-of-returns risk?
Sequence-of-returns risk is the risk that the ORDER in which investment returns arrive will materially affect the sustainability of a portfolio that is being drawn down for spending. Two retirees with identical starting balances, identical average returns over their retirement, and identical withdrawal rates can end up with very different outcomes if one experiences large losses early and the other experiences them late. The same average return is much less forgiving when withdrawals are happening at the same time.
Where does the "4% rule" come from and what are its limits?
The "4% rule" is a label for a 1994 study by financial planner William Bengen that looked at historical 30-year retirement windows in the U.S. and found that a starting withdrawal rate of approximately 4 percent of the initial portfolio, adjusted thereafter for inflation, was supported by the worst historical windows. The work has been extended many times since, with various authors finding higher or lower numbers depending on asset assumptions, horizon length, fees, and the geographies studied. The framework is a useful anchor; it is not a guarantee of safety and was never intended as one.
How is the distribution phase different from the accumulation phase?
In the accumulation phase, the household contributes to the portfolio and intends to leave it untouched for years or decades. Volatility is mostly a paper phenomenon — drawdowns recover before the money is needed. In the distribution phase, the household withdraws from the portfolio while the markets continue to move. Drawdowns become realized losses if shares must be sold to meet spending. The difference is structural, not just emotional, and it warrants its own analytical framework.
What role do Social Security and other guaranteed income play?
Social Security, defined-benefit pensions, and certain annuities provide income that is independent of portfolio market value. The dollar amount of "guaranteed income" reduces the dollar amount that must come from portfolio withdrawals, and therefore reduces sequence-of-returns risk. Household analyses often split the spending plan into "needs covered by guaranteed income" and "wants funded by the portfolio," which produces a more resilient plan than treating all spending as portfolio-funded.
What is a "bucket" approach to retirement income?
A "bucket" approach segments portfolio assets by the time horizon over which they will be spent: a near-term bucket holding 1–3 years of spending in cash or short-duration fixed income; an intermediate bucket holding 3–10 years of spending in less-volatile fixed income; and a long-term bucket holding equity-heavy growth assets. The framework gives the long-term bucket time to recover from drawdowns without being forced to sell, addressing sequence-of-returns risk directly. The cost is some complexity in rebalancing and the opportunity cost of holding near-term cash. The framework is a heuristic, not a guarantee.