Should You Max Out Your 401(k)? Calculate the Trade-Offs

If you are a high earner, the usual advice is to max out your 401(k). In 2026 that means putting in $24,500, or $32,500 if you are 50 or older. The advice is not wrong. It is also not a plan, because the limit was set by the tax code and knows nothing about your debts, your cash, your health plan or the age you want to stop working.

This guide gives you a way to decide. It has three tools you can use with your own numbers, and it says plainly what the evidence shows and what it does not.

The short answer

Take the full employer match first. That is pay you have already earned.

After that, the right amount to put in the 401(k) depends on four things. How your tax rate today compares with your likely rate when you withdraw. How much money you can reach before you turn 59 and a half. Whether any debt costs more than you expect to earn by investing. And what you plan to do with the pay you no longer defer.

Contributing less can fit your goals. It does not follow that a high income, a large balance or confidence in your own stock picks makes it the better choice. Those are reasons to look more closely, not proof.

What the max-out numbers show, and what they do not

A Bloomberg report on October 6, 2026 describes high earners who are choosing to stop short of the 401(k) limit. It cites Vanguard's How America Saves 2026, and the Vanguard report is worth reading for itself.

In 2025, 14% of all participants in Vanguard-run plans saved the legal maximum. Among those earning more than $150,000, 51% did. Among those earning $100,000 to $149,999, it was 10%. About 42% of people with balances of $250,000 or more reached the limit.

Bloomberg reports that the share of $150,000-plus earners at the limit was 60% in 2018. We could not confirm that older figure in the 2026 edition, so treat it as Bloomberg's report. Vanguard's own explanation, as Bloomberg relays it, matters just as much: the dollar limit has risen faster than pay for many people. A saver earning $150,000 needed to defer about 12% of pay to hit the 2018 limit. The 2026 limit takes about 16%. Wage growth also moves people into the top income group. A smaller share at the maximum does not by itself mean people are saving less.

Here is what these figures cannot tell you:

• They do not say whether any group saves too much or too little. Reaching the limit is not the same as being on track.
• They cover Vanguard-run plans only, not all workers.
• They do not say where the money went instead, or whether it did better.

Bloomberg also profiles individual savers and advisers. A 39-year-old with about half a million dollars, and a 25-year-old with a large brokerage account, show why some people change course. Those are individual cases that illustrate motives. An age and a balance do not show that someone is on track to retire. Strong results in an account the owner picked do not show better investing skill, because a rising market lifts most holdings.

Bloomberg also reports a planner who would accept retiring later in order to help his children with school costs and a first home. That is a legitimate choice. Choosing it knowingly is a different thing from falling short by accident.

Why "always max it out" can be incomplete

The rule works well for someone who is behind, whose employer match is not yet captured, and who has no better use for the cash. It leaves questions open for a person who already has substantial savings:

• Money in a 401(k) is hard to reach before 59 and a half without cost, unless one of a few narrow exceptions applies.
• A traditional balance is taxed when it comes out, at whatever rates apply then.
• Cash for a dated goal, such as tuition or a down payment, should not sit in stocks.
• Debt with a high rate is a certain cost. Investment returns are not certain.

Each of these can make a lower contribution reasonable. None of them makes it automatically better. The next sections show how to test each one.

Compare the next dollar

The question to ask is not whether a traditional account beats a Roth account in general. It is what happens to the next dollar you set aside, if you give up the same amount of take-home pay in each case.

Three facts shape the answer.

The tax rate that matters is on the extra dollar. A traditional contribution is taken from your highest-taxed dollars. A planner described by Bloomberg moved a client from the 32% bracket back into the 24% bracket by contributing more. That does not mean the whole income dropped to 24%. Only the slice of income above the bracket line was taxed at 32%. Moving the line down moves only that slice. Compare your rate on the extra dollar now against the rate you expect on the extra dollar when you take it out.

Payroll tax does not change. Pretax 401(k) deferrals generally still owe Social Security and Medicare tax. The tools below leave payroll tax out because it is the same in every column.

Equal tax rates means equal results. If your rate now and your rate at withdrawal are the same, and fees and investments are the same, traditional and Roth finish with the same after-tax money. Traditional gives you a bigger deposit that gets taxed later. Roth gives you a smaller deposit that is not. At 32% now and 22% later, with nothing else different, the traditional account ends about 15% ahead. At 24% now and 37% later, it ends about 17% behind. Those ratios come from the formula (1 minus the later rate) divided by (1 minus the rate now).

The catch is that nobody knows the later rate. The top income tax rate is 37% today. Bloomberg notes it was 70% when the 401(k) framework was created in 1978, which is why some savers expect rates to rise. History alone cannot settle that. The current rate tables were made permanent in 2025. "No scheduled expiration" does not mean the rates cannot change, and Congress can change them. The sensible response is not to guess a number. Test a lower, equal and higher future rate and see how much the answer moves.

Read the result in this order. First look at which account leads, and then at the driver the tool names. Then check the break-even rate: the withdrawal tax rate at which traditional and Roth finish even. If your honest guess is on one side of it with room to spare, the choice is clear. If it is close, the choice matters little, and other factors should decide.

The limit can change the answer. A Roth dollar uses up room one for one. A pretax dollar used up room too, but it buys more because it is worth more before tax. If your saving budget is bigger than the limit, a Roth deposit shelters more of it. The tool shows what part of the gap comes from the limit and what part from the tax rates.

Roth 401(k) is not Roth IRA. The tool treats a Roth 401(k) as an account you reach through qualified withdrawals. A Roth IRA is different: you can take out the contributions you made at any time without tax or penalty, though not the earnings. A Roth 401(k) does not work that way.

A taxable account is not tax-free and not safe. Interest and dividends are taxed each year. Gains are taxed when you sell, but only the part above what you paid, which is called cost basis. The tool tracks basis and gains separately so it does not tax the whole sale. Brokerage money can also lose value, and it can lose it in the very year you need it.

Changing accounts is separate from changing investments. Moving money from a 401(k) to a brokerage account does not change what you own. Buying individual stocks instead of a fund does. The tools give all three accounts the same investments and the same return on purpose. If a brokerage account only wins when you give it a higher return, then the win comes from the return assumption, not from the account.

That also applies to target-date funds. Some savers dislike them. But a 401(k) is an account, not a fund, and most plans offer other choices, such as index funds or a brokerage window. Look at your plan menu before you decide the plan is the problem. Another decision is whether you want to pick investments at all. A 2026 FINRA Foundation report found that among investors who use social media to guide their decisions, 63% rated their investment knowledge high while scoring 42% on an objective quiz, against 47% for investors who do not. The survey was fielded in 2024 and is descriptive. It does not show that social media causes poor results, and it does not measure returns. It is a reminder that confidence and skill are different things.

When maxing out is still the better choice

Maxing out remains attractive when:

• Your tax rate now is clearly above your likely rate in retirement.
• You have no better use for the cash, and your reserves and debts are in order.
• You do not need the money before 59 and a half.
• You know you would spend the cash you redirect. Discipline has value.

One of the planners Bloomberg quotes made the same point: the 401(k) tax break still has real value for many clients. Both views can be true at once.

If you want to stop working at 50 or 55

Early retirement turns one question into another. It is no longer whether the account is large enough. It is whether you can pay for living costs between the day you stop and the day other money opens up.

Money inside a 401(k) is not freely available during that gap. The main ways to reach it are narrow, and age alone does not qualify you.

• Rule of 55. The 10% additional tax is waived on distributions from an employer plan if you leave that employer during or after the calendar year you turn 55. It applies to that employer's plan only, not to an IRA, and the plan must allow the withdrawals. Ordinary income tax still applies.
• Substantially equal periodic payments. You can take a fixed series of payments at any age. They must continue unchanged for five years or until you reach 59 and a half, whichever is later. If you change them early, the penalty comes back for earlier years, with interest. For a 401(k), you must have left the employer before they start.
• Roth IRA contributions. You can take out the contributions you made, in any amount and at any age, without tax or penalty. Earnings come out last.
• Roth conversions. You can move traditional money to a Roth, paying tax on it now. Each conversion has its own five-year clock before you can take that amount out without penalty before 59 and a half. Money you convert in the year you retire is not available to pay your first years of bills.
• Brokerage and cash. No age limit applies, but gains are taxed and stocks can fall.

The bridge tool below counts only the money you could really spend before your chosen access age. Your emergency fund and your money for planned purchases are kept out, so they are not counted twice. It also holds a few years of spending in cash, since a market drop in the first years of retirement does more damage than the same drop later.

Treat the result as one projection, not a forecast. The tool shows a bad-start case, with poor returns right after you stop working, because the order of returns matters when you are drawing money out. It does not give a probability of success. A plan that works in one projection can fail in another. It also cannot see your eligibility for any early-access route, so it asks which route you plan to use and tells you what must be true.

Calling a retirement "fully funded" from one straight-line projection overstates what any projection can tell you. Treat it as the starting point for a list of what could go wrong, such as higher health costs, lower returns, a longer life and a change in the tax rules.

Rich in retirement accounts, short of money you can reach

A person can have a large net worth and still be unable to pay a large bill this year without selling something at a loss or paying a penalty. That happens when most of the money sits in accounts built to be left alone.

The risk shows up in these ways:

• A large expense, such as a job loss, a medical bill or a tuition payment, arrives before you have cash set aside.
• Reaching the money costs tax, a penalty, or both.
• You borrow at a high rate instead of using money you cannot reach.

Research from Vanguard in 2025 supports the link between cash on hand and retirement saving. Among its participants who left a job in 2023, one-third took their balance as cash. People with at least $2,000 in emergency savings contributed more and withdrew less. That study is mostly about workers with unsteady pay, not about high earners. It does not show that affluent savers put too much in retirement accounts. It does show that cash you can reach affects how well retirement money survives.

For a high earner, the practical test is simple. Count the months of essential spending in cash. Then list the dated goals in the next five years. Then look at what is left after those, and see how much of it could be spent before 59 and a half without a penalty.

After the match: a conditional checklist

There is no single correct order. The answer depends on facts about you. These are the questions to ask, roughly in this order of urgency, and what would change the answer.

1. Reserve. Is your cash enough for the months of essential spending you chose? If not, a shortfall can push you into debt or into taking money out of retirement accounts later.
2. Expensive debt. Does any debt cost more than you honestly expect to earn? Paying it down is a certain return. Stock returns are not certain. A low-rate loan may be a different story. If interest is deductible, it only helps if you itemize and the limits are not exceeded.
3. Dated goals. Do you need money within a few years? Cash or short-term holdings fit that better than stocks.
4. HSA. You can only contribute if you have a qualifying high-deductible health plan, with no disqualifying coverage, no Medicare and no one claiming you as a dependent. The 2026 limits are $4,400 for self-only coverage and $8,750 for family, and employer contributions count toward them. An HSA is for qualified medical costs. Spending it on anything else is taxed, plus 20% before age 65. A few states, such as California and New Jersey, do not follow the federal tax break.
5. Roth IRA. Eligibility depends on your modified adjusted gross income and filing status, not on salary alone. For 2026 a single filer's limit starts to fall at $153,000 and reaches zero at $168,000. For a married couple filing jointly, the range is $242,000 to $252,000.
6. Early-retirement gap. If the bridge tool showed a shortfall, the money has to go somewhere you can reach.
7. More in the workplace plan. After the rest is settled, more in the 401(k) may be the best home for what remains, especially if the tax rate comparison favors it.

If your income is above the Roth IRA range, a backdoor Roth contribution may be possible: you put money in a traditional IRA without a deduction, then convert it. It is not automatically tax-free. The IRS counts all your traditional, SEP and SIMPLE IRA money together, so if you hold other pretax IRA money, the conversion is taxed in proportion. The planner below includes a small calculator for this.

A 401(k) cut also needs a destination. A pretax contribution cut does not raise your take-home pay dollar for dollar. At a 35% rate, cutting $30,000 frees about $19,500. If the cut takes you below the employer match limit, you lose match as well, and each dollar of cash then costs more than a dollar of retirement money. Cash with no assigned job tends to disappear into everyday spending, and then you have saved less overall.

The planner leaves unknown facts unknown. If you do not know whether you are HSA-eligible, or what your modified adjusted gross income is, it will not send any money there. Fill in what you can, and take the rest to your payroll office or a tax professional.

What would change this answer

• A change in tax law, or a change in your own income, state or filing status.
• A lower or higher return than the examples in the tools.
• Fees. A high-cost plan menu can make a brokerage account more attractive, and a low-cost one can do the opposite.
• Your health, your family and the age you retire, which no tool here can know.

How we built the tools

The tools run in your browser. They make no network calls when you change an input, collect no personal details, need no sign-in, and do not save or share your numbers or put them in the page address. Every example is hypothetical and labelled. None of them uses a current market rate.

The tax rules are for tax year 2026 and were checked against IRS releases on October 7, 2026. If you use the tools for a different year, check the IRS first, since the tools do not guess at later limits. The tools are education, not advice to you personally, and no affiliate relationship affects any result. Formulas and limits are in each tool's methodology panel. Each claim, its source, the year of the data and its limits is kept in a research register that accompanies this article.

Sources

• Bloomberg, Sarah Foster, "High Earners Stop Maxing Out 401(k)s," October 6, 2026.
• Vanguard, How America Saves 2026, June 2026 (2025 data).
• FINRA Investor Education Foundation, Finfluencer Followers and Social Media Scrollers, April 2026 (2024 survey).
• Vanguard, Emergency savings protect retirement savings, June 2025 (2023 data).
• IRS, 2026 retirement plan limits; IRS Notice 2025-67; Rev. Proc. 2025-19 (HSA); Rev. Proc. 2025-32 (tax rate tables).
• IRS, Tax on early distributions; Substantially equal periodic payments; Publication 590-B; Publication 969.