Saving for retirement is easy to understand when the account balance is small.
The harder question arrives decades later, when another $20,000 contribution may barely change whether retirement works but could still reduce what a household can enjoy, pay off, or prepare for today.
Cody Gunn’s central idea is that retirement saving needs a finish line. That line is not one age or one magic portfolio balance, but the point where a well-tested retirement plan can support the household without depending on another year of contributions.
The Exact Point Is Not $1 Million, $2 Million, or Age 65
The cleanest definition is surprisingly simple: you are approaching the point where you can stop saving for retirement when the retirement plan works without counting on future contributions.
Current assets, reasonable investment assumptions, Social Security or pensions, and other dependable income must be sufficient to cover the spending plan with an appropriate safety margin.
That is different from saying more money has no value. Additional savings can always provide a larger inheritance, more discretionary spending, greater protection against uncertainty, or the ability to absorb unusually expensive care.
The question is narrower. Does another retirement contribution materially improve the probability of meeting the goals that actually matter, or has the household already accumulated enough to fund them?
Before answering, several 2026 numbers deserve attention.
| 2026 Item | Current Figure | Why It Matters |
|---|---|---|
| 401(k), 403(b), most 457 and TSP employee limit | $24,500 | Maximum regular employee deferral |
| General age-50+ catch-up | $8,000 | Raises potential workplace-plan saving |
| Age 60–63 catch-up | $11,250 | Allows unusually large late-career contributions |
| IRA contribution limit | $7,500 | Another possible savings vehicle |
| IRA age-50+ catch-up | $1,100 | Raises IRA limit for eligible older savers |
| Standard 2026 Medicare Part B premium | $202.90/month | Healthcare must be included in retirement cash flow |
The IRS set the regular 2026 workplace-plan employee contribution limit at $24,500, with an $8,000 general catch-up and an $11,250 catch-up for eligible workers ages 60 through 63. The IRA limit is $7,500, with a $1,100 age-50-plus catch-up.
Those limits show how quickly someone near retirement can continue adding to an already substantial portfolio. They do not prove that maximizing every available account remains the right use of each additional dollar.
Cody Gunn’s Framework Starts With the Life the Money Must Pay For
Gunn’s source framework reverses the usual process. Rather than choosing an impressive portfolio number first, he starts by defining where the household expects to live, what it expects to do, what travel or hobbies matter, and what those choices realistically cost.
The next step is removing expenses that disappear or change after work ends. Contributions to retirement accounts themselves disappear, and some households also spend less on commuting, work clothing, meals near the office, or other employment-related costs.
This is more useful than automatically assuming retirement requires a fixed percentage of final salary. A household earning $180,000 may spend nowhere close to $180,000 because taxes, savings, and work-related expenses consume part of that income.
Consider this hypothetical household.
| Reverse-Mapping Step | Annual Amount |
|---|---|
| Current gross household income | $180,000 |
| Estimated retirement lifestyle spending | $95,000 |
| Expected Social Security | $60,000 |
| Remaining annual spending gap | $35,000 |
| Portfolio supporting roughly $35,000 at 3.9% | About $900,000 |
The calculation is intentionally simplified and does not prove that $900,000 is enough for this household. Taxes, healthcare, investment allocation, longevity, irregular expenses, long-term care, and Social Security timing could all move the number materially.
It does show why salary multiples can produce the wrong mental picture.
Morningstar’s latest research puts its 2026 base-case starting withdrawal rate at 3.9% for a particular 30-year scenario with fixed inflation-adjusted spending and a 90% probability of funds remaining at the end, excluding Social Security and other nonportfolio income.
Signal 1: Retirement Still Works If Contributions Stop Today
This is the strongest stopping test. Remove every future 401(k), IRA, and other retirement contribution from the projection and rerun it.
Then stress the plan. Include a poor market early in retirement, higher-than-expected inflation, meaningful home repairs, healthcare costs, one spouse living substantially longer than the other, and a realistic amount of discretionary spending.
If the plan only works because another $25,000 or $30,000 must be contributed every year until age 65, the finish line has not been reached. If the plan remains adequately funded even when contributions drop to zero, the household has crossed an important threshold.
That still does not automatically mean contributions should stop. Employer matching, current tax rates, future tax rates, estate goals, and alternative uses for the cash must be considered next.
Signal 2: More Tax Deferral Is No Longer Clearly Improving the Plan
This is where Gunn’s argument becomes especially interesting. His source material warns that continuing to build a very large traditional 401(k) or IRA can eventually create future taxable withdrawals that the household did not actually need.
The underlying issue is legitimate, but the details matter. It is not true that every additional traditional 401(k) contribution becomes financially harmful simply because future RMDs exist.
Under current IRS rules, RMDs generally begin at age 73 for people currently reaching the applicable age, while the statutory applicable age moves to 75 for later cohorts. Roth IRAs and designated Roth accounts such as Roth 401(k)s are not subject to lifetime RMDs for their owners, although beneficiaries can face distribution rules after the owner’s death.
Whether another traditional contribution helps therefore depends partly on the tax rate avoided today versus the tax rate created later.
Someone deducting contributions at a high marginal rate today and expecting a much lower taxable income in retirement may still receive substantial value from pre-tax saving.
Someone already holding a very large traditional balance, however, may find that additional tax diversification becomes more useful. That could mean Roth contributions, taxable investments, cash reserves, or other goals rather than automatically directing every available dollar into the traditional account.
The Four-Signal Test Gives “Enough” a Measurable Meaning
Gunn’s original framework uses four signals: future forced withdrawals, Social Security coverage of basic spending, current-versus-future tax rates, and the effect of a large traditional balance on a surviving spouse.
A more cautious version keeps those ideas but adds one essential condition: the overall retirement plan must first be sustainable without future contributions.
| Test | Stronger Position | Warning Sign |
|---|---|---|
| Future contributions | Plan works without them | Success depends on several more years of saving |
| Retirement income | Dependable income covers much of essential spending | Large essential-spending gap remains |
| Tax diversification | Healthy mix of taxable, traditional and Roth resources | Nearly all assets create ordinary taxable income |
| Survivor plan | One-spouse scenario remains affordable | Death of one spouse creates a serious cash-flow or tax problem |
| Contingency margin | Major surprises can be absorbed | One large expense breaks the plan |
Passing all five does not guarantee retirement success. It means the decision can finally shift from “How much more can be accumulated?” to “What job should the next dollar perform?”
Social Security Covering Essentials Helps, But It Is Not a Green Light by Itself
Gunn places considerable emphasis on Social Security covering basic living expenses. There is logic behind that because a larger dependable income floor reduces the amount a portfolio has to supply each month.
Yet Social Security should not be treated as a binary test. Two households with identical benefits can have completely different housing costs, insurance costs, taxes, debt obligations, and discretionary spending.
Claiming age matters as well. Social Security retirement benefits can generally begin at 62, but someone born in 1960 or later who claims at 62 can receive as much as 30% less than the benefit payable at full retirement age of 67.
Delaying beyond full retirement age raises the monthly retirement benefit until age 70; for someone born in 1960 or later, claiming at 70 produces 124% of the full-retirement-age amount.
A household that appears fully funded assuming benefits at 70 may not be fully funded if it intends to claim at 62. The actual Social Security strategy therefore belongs inside the stopping calculation rather than being added afterward.
RMDs Can Matter, But They Are Not Automatically a Reason to Stop Saving
The source material paints future RMDs as one of the strongest reasons to stop contributing to a traditional 401(k). That possibility deserves attention, particularly for households that already have substantial tax-deferred balances.
However, an RMD is not inherently a financial loss. It is a distribution from money that generally received tax deferral for years or decades, and the correct comparison is the tax benefit of contributing versus the eventual tax cost of withdrawing.
The concern becomes stronger when withdrawals stack on top of Social Security, pensions, investment income, or other taxable resources. Higher modified adjusted gross income can also affect Medicare costs.
For 2026, the standard Medicare Part B premium is $202.90 per month. IRMAA begins when the relevant MAGI exceeds $109,000 for an individual filer or $218,000 for married couples filing jointly, and Medicare generally uses tax information from two years earlier, meaning 2024 income normally determines 2026 IRMAA.
That creates a reason to model future withdrawals carefully. It does not create a universal rule that a large traditional account should stop receiving contributions.
The Survivor Test Is Where Oversaving Can Look Different
One of Gunn’s more useful points involves married couples. A retirement plan can look comfortable while both spouses are alive and become substantially less tax-friendly after one dies.
The surviving spouse may eventually file as single while still receiving significant taxable portfolio distributions. Household expenses may decline, but many costs such as housing, property taxes, insurance, utilities, and vehicle ownership do not disappear proportionately.
The 2026 federal brackets illustrate the difference. The 22% bracket begins above $50,400 of taxable income for single filers but above $100,800 for married couples filing jointly, while the 24% bracket begins above $105,700 for singles versus $211,400 for joint filers.
A couple with a large concentration in traditional accounts should therefore test the retirement plan twice. One projection should assume both spouses remain alive, and another should examine what happens to income, taxes, Social Security, housing costs, and withdrawals after the first death.
When Continuing to Save Is Still the Better Move
The phrase “stop saving” makes a compelling headline, but plenty of near-retirees should continue. A portfolio can look large in isolation and still be inadequate for the lifestyle it must support.
Someone retiring before Medicare may need years of private health coverage. Another household may carry a large mortgage, plan to support family members, have little guaranteed income, or want a substantial legacy.
The decision becomes easier when the competing conditions are placed side by side.
| Situation | Keep Saving Aggressively | Consider Slowing or Redirecting |
|---|---|---|
| Retirement projection | Depends on future contributions | Works without future contributions |
| Employer match | Not yet captured | Full eligible match captured |
| Emergency liquidity | Weak | Strong |
| Traditional-account concentration | Moderate | Already unusually high |
| Debt | High-cost balances remain | High-cost debt controlled |
| Survivor plan | Vulnerable | Stress-tested and workable |
| Retirement lifestyle | Still undefined | Detailed spending plan established |
A person who has merely hit an arbitrary target such as $1 million should not use that number as permission to stop. A person who has stress-tested spending, taxes, healthcare, income, portfolio withdrawals, and survivor needs has considerably better evidence.
Do Not Give Up an Employer Match Without Looking at the Math
Even when the household has reached its retirement target, the employer contribution deserves separate treatment. Reducing contributions below the level required to capture an available match could mean voluntarily giving up compensation offered under the plan.
The exact value depends on the employer’s formula, eligibility requirements, and vesting schedule. Someone intending to leave work shortly should check those details rather than assuming every match has the same value.
This creates an important distinction. Being ready to stop maximizing a traditional 401(k) is not necessarily the same as being ready to contribute zero.
For some workers, the better answer is to contribute enough to receive the available employer contribution while redirecting money above that point toward other priorities.
Where the Money Can Go Once Maximum Traditional Saving Is No Longer Necessary
Gunn’s original framework suggests redirecting money toward liquidity, taxable investments, Roth assets, and debt reduction rather than automatically adding to an already large traditional account.
Those are reasonable categories to evaluate, but none is universally first in line. The best destination depends on what weakness remains in the retirement plan.
| Priority | What It Can Solve | What to Review First |
|---|---|---|
| Cash reserve | Avoids forced asset sales for near-term spending | Size of upcoming expenses and existing liquidity |
| Roth saving | Builds tax-free qualified withdrawal capacity | Eligibility, plan rules and current tax rate |
| Taxable brokerage | Adds flexible, accessible assets | Capital-gains exposure and investment risk |
| High-interest debt | Reduces mandatory monthly expenses | Interest rate and lost investment opportunity |
| Current-life spending | Converts excess capacity into experiences or reduced work | Confirm retirement plan still has adequate margin |
The final category is easy to ignore. Some households may discover that the best use of an extra dollar is no longer another financial account.
It could instead fund a major home repair before retirement, allow a spouse to reduce hours, pay for a family trip, replace an unreliable vehicle, or simply create more breathing room in the final working years. The point is not reckless spending; it is recognizing that money has jobs beyond increasing a retirement balance.
Tax Diversification Can Become More Valuable Than a Bigger Number
A household with $2 million divided among traditional, Roth, taxable, and cash accounts can have very different planning options from a household with the same $2 million almost entirely inside a traditional 401(k).
The second household may be wealthy on paper while having less control over how withdrawals appear on its tax return. Tax diversification gives retirees more options for deciding where spending money comes from in a particular year.
This flexibility can become useful when managing large purchases, capital gains, Roth conversions, charitable gifts, Medicare IRMAA exposure, or the surviving spouse’s tax situation.
It does not mean Roth is automatically superior to traditional saving. If a worker is in a much higher marginal tax bracket today than expected later, deducting a traditional contribution can still be attractive.
The meaningful question is therefore not, “Which account type is best?” It is, “Does another dollar in this account improve the household’s overall retirement flexibility?”
A 4% Rule Should Not Be the Entire Stopping Test
The source example uses a 4% withdrawal rate to turn the retirement spending gap into a portfolio target. That is a useful shortcut, but a shortcut should not become a guarantee.
Morningstar’s latest base-case research estimates 3.9% as the highest starting withdrawal rate for a retiree seeking fixed inflation-adjusted withdrawals in its modeled 30-year scenario at a 90% success threshold. It also notes that flexible spending approaches can potentially support different withdrawal patterns.
A 55-year-old planning for a retirement potentially lasting four decades therefore should not simply divide annual spending by 4% and declare the job finished. Nor should a 70-year-old with significant guaranteed income necessarily be forced into the same assumptions.
Withdrawal rates are planning tools. The stopping decision needs the entire household cash-flow plan around them.
The Real Cost of Saving Past “Enough” Is Opportunity Cost
The most compelling part of Gunn’s argument is not actually about RMDs. It is about what people exchange for additional savings after the financial plan is already strong enough.
Another year of aggressive saving may mean another year in a demanding job. It may postpone travel, reduce time with family, delay a move, or keep someone working full-time when part-time work could already support the plan.
Those choices can still be completely reasonable. Someone who enjoys work, wants a larger estate, values a larger safety margin, or simply sleeps better with a bigger balance may willingly keep saving.
The mistake is continuing only because stopping feels irresponsible. Once the numbers demonstrate that retirement no longer depends on additional contributions, saving becomes a choice rather than an obligation.
That psychological transition can be harder than accumulating the money in the first place.
“Enough” Means the Plan No Longer Needs the Next Contribution
That is the most defensible version of the exact stopping point.
It arrives when expected spending has been mapped realistically, dependable income has been included, a sustainable portfolio withdrawal plan covers the remaining gap, taxes and healthcare have been modeled, major surprises can be absorbed, and the surviving-spouse scenario still works.
Then one final test should be run: set future retirement contributions to zero.
If the retirement plan remains appropriately funded across reasonable stress scenarios, future contributions are no longer necessary to make the core plan work. At that point, the household can decide whether additional saving still serves another goal.
That might be a bigger inheritance. It might be more charitable giving, greater protection against long-term-care costs, or simply a larger margin for uncertainty.
But those are additional goals. They should not be confused with the minimum amount required to support the retirement lifestyle already planned.
