Should I Stay Fully Invested or Keep a Cash Reserve Near Retirement?

The hard part arrives early. The University of York’s 2017 discussion paper describes the damage when poor returns land soon after withdrawals begin: money leaves the portfolio while it is already down. This is sequence-of-returns risk. A reserve changes the source of the next withdrawal. It does not erase the loss.

How many years of expenses should a retiree keep in cash?

There is no single number for every household. Schwab Center for Financial Research’s 2023 analysis suggests holding one year of spending not covered by regular income in a liquid bank account or money market fund, then holding an additional two to four years of living expenses in short-term bonds, CDs, or other reasonably liquid accounts.

The starting number is not total household spending. It is the annual gap after reliable nonportfolio income. Morningstar’s bucket guide defines that gap by subtracting Social Security, pension payments, and other dependable income from annual spending. A household with a smaller gap needs less portfolio cash for the same period. A household funding most spending from investments faces a larger gap.

A longer reserve buys time. It also leaves more money outside assets intended for longer horizons. Schwab’s 2023 review found that bear-market peak-to-peak recoveries for a diversified stock index averaged roughly three and a half years from the 1960s through 2023. That history explains the appeal of several years of liquidity. It does not turn that span into a rule.

Cash is for planned portfolio withdrawals. An emergency fund is for an unplanned household cost. A long-term bond allocation is part of the portfolio’s broader risk and income mix. Combining all three into one label makes the plan look safer than it is.

Is a cash bucket better than selling investments during a downturn?

A cash bucket can make spending easier during a downturn, but it is not automatically better for long-run results. Morningstar’s 2024 comparison tested systematic withdrawals against four bucket strategies across historical retirement-start dates. Its cash-reserve and three-bucket approaches underperformed systematic withdrawals because several years held in cash or bonds created an opportunity cost.

That finding cuts through a common false choice. Selling investments after a decline is not always a mistake. Selling a planned amount under a disciplined withdrawal and rebalancing process differs from abandoning the plan in fear.

Morningstar’s 2024 bad-start-date test used 150 hypothetical retirement dates drawn from the worst six-month equity returns between 1926 and 1992. In a separate behavioral test, investors who sold equities after a negative 20% quarter and bought back after a positive 20% quarter had viable monthly retirement spending fall by about $2,000. The reserve can matter because it gives a household another source of spending when fear is loud.

Rules beat moods. Morningstar’s bucket guide describes a refill order: cash income first, then income from bonds and dividend-paying stocks, then rebalancing proceeds, then principal from lower-risk fixed income. A reserve without a refill rule can become a permanent cash pile. A reserve with a rule becomes part of the withdrawal system.

The choice also sits inside the wider retirement plan. How Can I Tell Whether My Portfolio and Social Security Can Cover Retirement Spending? addresses the same first question: how much of household spending must the portfolio actually fund?

What should go in a retirement cash buffer?

A retirement cash buffer holds money intended for near-term spending and available without selling long-term holdings at an unwanted time. Schwab’s 2023 framework names a liquid bank account or money market fund for the first year, then short-term bonds, CDs, or other reasonably liquid accounts for the next layer.

The contents should match the job. Cash handles the next bills. Short-term holdings extend the runway. They are not a substitute for the rest of the portfolio, and they are not proof that future market returns will arrive on schedule.

Reliable income changes the calculation. Schwab’s 2023 guidance says retirees whose annuities, pensions, Social Security, rent, and similar income cover most expenses can keep a more aggressive investment stance. The CFPB’s study of people who retired from 1992 through 2014 found that 51% had enough income, savings, and non-housing assets to maintain first-year spending for five consecutive retirement years. Of that 51%, 27% did so from regular income sources, while another 24% did so after adding retirement accounts, savings, mutual funds, and other non-housing assets.

The CFPB research brief also reports that the first retirement years are, on average, the most expensive. That makes a spending plan as important as an asset list. If spending can fall after a poor return period, less cash has to carry. If spending is fixed and portfolio-funded, the buffer has a harder job.

Cash is not safety in the broad sense. It is time. Investments are not danger in the broad sense. They are the part of the plan built for years the cash reserve cannot reach.