How Long Will Retirement Savings Last?

One of the most common fears in retirement planning is outlasting your savings. The question of how long your retirement savings will last is a fair concern, but it is also one that is easier to manage when you treat it as an income planning question: How much retirement income do you need and where will it come from?

Retirement savings may be one part of that answer, alongside Social Security and other income sources. The outcome depends on your withdrawal strategy, spending habits, inflation rate and how markets behave during your withdrawal period. Below, we explain the key variables and how to think about portfolio durability through market cycles instead of assuming an automatic drawdown.

What Determines How Long Retirement Savings Last?

Predicting the lifespan of a retirement fund is not as simple as dividing a total balance by an annual salary. Several core drivers impact how your assets will perform over decades, including:

• Household income entering retirement: Start with the income you expect at retirement age and where it comes from. Some retirees rely heavily on their portfolio. Others have meaningful income sources such as pensions, rental income or part-time work that reduce reliance on withdrawals from investments.
• Retirement budget and annual expenses: A realistic retirement budget is the foundation. Housing, healthcare, taxes and discretionary spending shape retirement expenses and they rarely stay flat for decades. If annual expenses rise faster than expected, higher withdrawals may follow.
• Withdrawal rate and withdrawal period: A withdrawal rate is the pace at which you draw from retirement savings to fund spending. The withdrawal period is how long you expect withdrawals to occur.
• Market conditions and investment returns: Retirement savings are often invested. That means investment returns can help support withdrawals, but market fluctuations introduce risk. A proper investment strategy should account for potential downturns in retirement.
• How you react to market fluctuations: Many plans fail in practice because of behavior, not math. Selling after declines, chasing performance or making big asset allocation changes in response to headlines can change long-term results.
• Life expectancy, health and reliance on the portfolio: Longer life expectancy can extend the timeline your retirement fund needs to support. Health can affect both spending and flexibility.
• Inflation pressure over time: Inflation is often an invisible driver because it compounds quietly. If you plan for an inflation rate that is too low, your projected retirement money may look more durable than it is. Your expected inflation rate matters because it influences future spending and the value of inflation-adjusted withdrawals.
• Recurring withdrawals and one-time liquidity needs: Many retirees plan for recurring withdrawals but experience one-time events that disrupt the plan: a major home repair, a medical expense, help for family or paying down credit card debt. Some may use a personal loan or home equity loan for cash flow, which can create an additional liability that affects future flexibility.
• Guaranteed income sources: Social Security benefits can play a meaningful role in many plans. The timing of Social Security can affect the size of portfolio withdrawals early in retirement, which may influence long-term sustainability. It can also help to understand how Social Security rules work and how the Social Security Administration determines benefits and adjustments.

All of these factors interact with each other in retirement planning, creating a set of trade-offs unique to each individual. Instead of viewing retirement savings as a static pool of cash that declines linearly, a successful plan focuses on sustainability. Consistent declines year after year can be a signal that a portfolio’s spending, allocation or timing assumptions need attention. Retirees often benefit from thinking about withdrawal strategy as a process rather than a one-time decision.

Estimating Your Retirement Savings Timeline

To develop concrete retirement goals, many people turn to a retirement calculator. While no tool can predict the exact direction of the market, Fisher Investments’ retirement calculator allows you to adjust inputs such as:

• Withdrawal rate assumptions
• Expected inflation rate
• Investment returns assumptions
• Timing and size of monthly withdrawals
• Recurring withdrawals over a full withdrawal period

Understanding Withdrawal Rates

Withdrawal rates are often discussed as if they are universal rules. In reality, a sustainable withdrawal rate depends on your goals, your flexibility and market conditions.

A few practical points to keep in mind:

• A higher withdrawal rate can increase the chance that a retirement fund depletes sooner
• A lower withdrawal level may improve durability but could require trade-offs in retirement lifestyle
• Fixed income yields and cash returns can impact income and growth, but they do not remove market risk or inflation risk

If you are saving in multiple accounts, withdrawal planning also includes tax considerations. For example, withdrawals from a traditional retirement account differ from withdrawals from a Roth account. Some workplace plans also allow a Roth 401k, which can change how retirement income will be taxed. Age may also play a role, as required minimum distributions (RMDs) may be a factor in retirement account withdrawals and associated taxes.

Five Strategies for Extending Retirement Savings

If you are concerned about your retirement savings’ longevity, here are seven proactive steps you can take to strengthen your retirement plan.

1. Plan your withdrawal period intentionally: Some households do not need portfolio withdrawals immediately if they have other income sources. Others may need higher early withdrawals before Social Security begins. Matching the withdrawal period to your actual income timeline can reduce guesswork.
2. Maintain compounding potential across market cycles: Investing for retirement involves market risk. While downside volatility is painful, staying invested to participate in the recoveries after declines is often more prudent than locking in losses.
3. Coordinate income sources: For many retirees, Social Security is a key pillar. Understanding when you plan to claim Social Security and how Social Security benefits fit into your overall retirement income picture can change how much you need from retirement savings early on. Delaying Social Security can require higher withdrawals early, potentially putting strain on your portfolio, which can reduce flexibility in the future.
4. Revisit your plan regularly: Retirement planning is not “set it and forget it.” Reviewing your retirement budget, your asset allocation and your withdrawal strategy regularly can help you adapt to changing retirement expenses, taxes, markets and family needs.
5. Align legal planning with long-term goals: Estate planning can support your objectives for beneficiaries, taxes and legacy, and should be considered in your income plan. Legal structures are most effective when they are integrated into financial planning rather than treated as last-minute fixes.

Common Retirement Savings Mistakes To Avoid

Even the most diligent savers can fall into traps that jeopardize their retirement savings. Awareness is the first step in avoiding these pitfalls.

• The piggy bank trap: Treating a retirement account as a source of quick cash for non-essentials can derail years of saving.
• Debt mismanagement: Over-reliance on a personal loan or home equity loan without modeling the long-term trade-offs can create a debt spiral that consumes your retirement income.
• Late planning: Implementing estate planning or legal protections too late can leave your retirement funds vulnerable to taxes or probate issues when the assets pass to heirs.
• Reactionary moves: Assuming that a temporary market dip or a seemingly negative economic variable such as an inverted yield curve requires immediate, drastic portfolio action often leads to selling low and missing the recovery.
• Static strategies: Not revisiting your withdrawal strategy as your health, family situation or spending habits change is a recipe for instability. An example would be failing to account for how inflation will force you to adjust withdrawals over your life expectancy.

You must plan for how the world may change over the coming decades, not just as it is today.

How Fiduciary Investment Advisers Can Help Support Savings Longevity

Retirement planning requires long-term discipline and the coordination of your investment strategy with your tax situation and estate planning.

If you want a starting point today, try modeling different scenarios with our retirement calculator. These outputs can guide a deeper conversation about withdrawals, income sources, investment risks and the retirement goals that matter most to you.

Looking for more retirement insights? Get our free guide to retirement income or schedule an appointment with Fisher Investments today.

This article is for informational and educational purposes only and should not be construed as investment advice or a recommendation regarding any particular investment strategy or course of action. The information presented is general in nature and does not take into account the individual circumstances, objectives, or financial situation of any specific investor. We provide our general comments to you based on information we believe to be reliable. There can be no assurances that we will continue to hold this view; and we may change our views at any time based on new information, analysis or reconsideration. Some of the information we have produced for you may have been obtained from a third-party source that is not affiliated with Fisher Investments.

Fisher Investments has no duty or obligation to update the information contained herein.