One of the most common questions I hear from families as they approach retirement sounds deceptively simple. How do I make sure the money lasts?
It is a fair question, and the honest answer is that making money last in retirement requires a different kind of thinking than the accumulation phase that came before it. For decades, the goal was to save as much as possible. In retirement, the goal shifts to creating a sustainable withdrawal rate and a reliable income stream that holds up over what could be a very long time horizon, while adapting to changing markets, expenses, and life circumstances along the way. Getting that transition right matters, and it deserves a clear framework.
Why a Single Number Is Not Enough for Retirement Income Planning
Many people approach retirement income planning by identifying a single safe withdrawal rate and applying it mechanically. The 4% rule is the most widely referenced starting point, suggesting that withdrawing 4% of your portfolio in the first year of retirement and adjusting annually for inflation may sustain a 30-year retirement with a high probability of success.
That framework has its uses as a planning benchmark. Fidelity’s research on sustainable withdrawal rates suggests that aiming to withdraw no more than 4% to 5% of savings in the first year of retirement, then adjusting for inflation, is a reasonable starting estimate. Their research also highlights that your actual sustainable withdrawal rate depends on factors you cannot fully control, including how long you live, what markets do, and what inflation looks like across your retirement years.
For families with significant assets and complex financial lives, treating the 4% rule as a fixed answer rather than a starting conversation tends to create problems over time. Your withdrawal rate in any given year should reflect your current circumstances, not a figure set on the first day of retirement and never revisited.
Building Flexibility Into Your Withdrawal Strategy
One of the most important decisions in retirement income planning is how much flexibility to build into your spending. A fixed withdrawal approach provides predictability, but it can also mean drawing down your portfolio at an uncomfortable rate during a poor market year, or leaving significant wealth unspent during strong years by sticking rigidly to a set number.
A dynamic withdrawal strategy adjusts the amount you take each year based on portfolio performance and market conditions. During years when your portfolio has grown, you may be able to draw more. During years when markets have pulled back, reducing discretionary spending can help preserve the base that generates future income. Morningstar’s ongoing research on safe withdrawal rates has consistently found that retirees who maintain flexibility in their spending tend to be better positioned across different market environments than those using a rigid fixed withdrawal approach.
For families who want to maintain a consistent standard of living, one practical approach is to separate essential expenses covered by reliable income sources from discretionary expenses funded from the investment portfolio. The essential layer provides stability. The discretionary layer creates room to adapt when conditions change.
How Longevity Affects How to Make Money Last in Retirement
Retirement income planning without accounting for longevity creates an incomplete picture. People are living longer, and a retirement that begins at age 62 or 65 may need to fund 25 to 35 years of expenses or more. Charles Schwab’s research on the 4% rule notes that a 30-year time horizon may not be sufficient for all retirees, particularly those who retire early or come from families with a history of longevity.
For business owners and high-net-worth families, the longevity dimension connects directly to estate planning and wealth transfer goals. A retirement income plan that draws down assets too aggressively in the early years may achieve a comfortable lifestyle while leaving less than intended for the next generation. A plan that is overly conservative out of caution may leave a family living well below what their assets could comfortably support.
Getting the balance right requires modeling your specific situation across multiple scenarios rather than applying a generalized rule. Individual results vary considerably, and there is no withdrawal rate that carries a guarantee across all market conditions and time horizons.
Coordinating Withdrawals With Your Tax Picture
Retirement income planning and tax planning are the same conversation, and families who treat them separately often leave meaningful efficiency on the table. The sequence in which you draw from taxable, tax-deferred, and tax-free accounts affects your annual tax bill, your Medicare premium costs, and how much of your Social Security income becomes taxable each year.
For families with assets across multiple account types, the groundwork laid before retirement begins creates the flexibility to manage that coordination well. Roth conversions during lower-income years, strategic charitable giving through qualified charitable distributions, and thoughtful sequencing of which accounts to draw from first are tools that work better when built into the plan early rather than improvised after the fact. Tax laws change and individual situations vary, so working with a qualified tax professional alongside your financial advisor is an important part of building a withdrawal strategy that holds up over time.
Building a Plan That Fits Your Actual Retirement
A sustainable withdrawal strategy works best when it is built around the actual shape of your retirement, not a theoretical average. Your spending in the first decade of retirement may look very different from your spending in the third.
Healthcare costs tend to rise over time. Travel and major expenses are often concentrated in the early years. Estate and gifting goals evolve as family circumstances change. A plan that acknowledges that variability and builds in regular review points tends to serve families better than one set at retirement and left unchanged. Staying engaged with your strategy throughout retirement rather than setting it and stepping back is one of the more consistent differences I see between families who feel confident about their retirement income and those who do not.
If you would like to work through what a sustainable withdrawal strategy might look like for your specific situation, feel free to reach out. We are glad to have that conversation.
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Frequently Asked Questions
What is a sustainable withdrawal rate in retirement?
A sustainable withdrawal rate is the percentage of your portfolio you can withdraw annually throughout retirement without running out of money over your expected time horizon. Research suggests starting at 4% to 5% in the first year and adjusting for inflation, though the right rate depends on individual factors including life expectancy, asset allocation, and other income sources.
Does the 4% rule still apply in 2026?
The 4% rule remains a widely used starting benchmark, but it was developed based on historical market data and a 30-year retirement horizon. Morningstar’s 2024 research suggested a more conservative starting rate of 3.7% given current equity valuations, while Fidelity’s research supports a 4% to 5% range depending on circumstances. Individual situations vary significantly, and the rule is best used as a conversation starter rather than a fixed answer.
How do taxes affect retirement withdrawal strategy?
The sequence in which you draw from taxable, tax-deferred, and Roth accounts affects your annual tax bracket, Medicare premium surcharges, and what percentage of your Social Security income becomes taxable. Coordinating withdrawal sequencing with a qualified tax professional may improve overall tax efficiency meaningfully over the course of a long retirement.
How long does retirement income need to last?
A retirement beginning at age 62 or 65 may need to fund 25 to 35 years of expenses or more, depending on health and family history. Planning for a longer horizon than you expect to need tends to be more forgiving than underestimating your longevity, particularly for families with wealth transfer goals.
TL:DR A sustainable withdrawal rate should be individualized, factoring in your retirement time horizon, spending flexibility, tax situation, and longevity. Avoid depending entirely on a fixed percentage. Families with significant assets benefit from a coordinated and adaptable approach that links withdrawal sequencing with tax planning and regularly reviews plans. Flexibility and ongoing review are key to ensuring your retirement income lasts.
