What Is a Key Employee in a 401(k)?

A key employee is not the employee the company considers indispensable.

It is a specific tax-law classification used to determine whether a retirement plan is top-heavy.

An employee can be key under any one of three routes:

1. an officer whose annual compensation exceeds the indexed officer threshold
2. a more-than-5% owner
3. a more-than-1% owner whose annual compensation exceeds $150,000.^[2][4][5]

Those routes create counterintuitive results.

A 6% owner earning $40,000 can be a key employee.

A non-owner earning $300,000 is not automatically key merely because the salary is high.

The year used for the test also matters. For a calendar-year plan testing whether it is top-heavy for 2026, the determination date is generally December 31, 2025. That means 2025 key-employee status—and the 2025 officer threshold of $230,000—generally feeds that test. The indexed officer threshold rises to $235,000 for 2026, which becomes relevant to key status for a 2026 plan year and, for a typical calendar-year plan, the December 31, 2026 determination used for 2027 top-heavy status.^[1][2][3]

Key Takeaways

• Key employee status is used for top-heavy testing, not ADP/ACP testing.^[3][4]
• An employee can be key through any of three routes:
• officer above the applicable indexed compensation threshold
• more-than-5% owner
• more-than-1% owner with compensation over $150,000.^[4][5]
• The officer threshold is $235,000 for 2026 and was $230,000 for 2025.^[1][2]
• The more-than-1% owner compensation threshold remains $150,000; it is not the same indexed amount as the officer threshold.^[4][5]
• More-than-5% owners can be key regardless of compensation.^[4][5]
• Ownership tests use more than 5% and more than 1%. Exactly 5% or exactly 1% is not enough on direct ownership alone.
• Family attribution can change who is treated as an owner.^[4][5]
• Officer status is functional. A title alone does not necessarily settle whether someone is an officer for Section 416 purposes.^[8]
• A statutory cap limits how many employees can be treated as key solely because they are officers.^[8]
• A plan is generally top-heavy when more than 60% of the applicable account balances or accrued benefits belong to key employees.^[3][6][7]
• Top-heavy status can require minimum employer contributions for eligible non-key employees and minimum accelerated vesting.^[4][6][7]
• HCE and key employee are different classifications. INV-084 covers the HCE rules.

The Three Routes

The cleanest analysis is:

Officer test OR more-than-5% owner test OR more-than-1% owner-plus-compensation test

The employee only needs to satisfy one.

That is why starting with salary alone produces bad classifications.

Route 1: Officer Above the Indexed Threshold

For plan years beginning in 2026, the indexed compensation threshold for the officer branch of the key-employee definition is:

$235,000.^[1][2]

For 2025, it was:

$230,000.^[1]

The rule uses compensation greater than the threshold.

2026 example

Officer compensation:

$235,000

That amount does not exceed a $235,000 threshold.

Officer compensation:

$235,001

That amount does.

Other facts still matter, including whether the individual is actually an officer for Section 416 purposes and whether the officer-count cap applies.

Officer Means More Than a Fancy Title

IRS training guidance applies a facts-and-circumstances approach to officer status.^[8]

Relevant considerations include:

• source of authority
• nature and extent of duties
• continuity of service
• whether the employee actually exercises officer-level authority

A company can call ten salespeople:

Vice President

without necessarily making all ten officers for the key-employee test.

The reverse is also possible.

Someone without a formal officer title can have authority that causes the person to be treated as an officer.

The test looks beyond the business card.

The Officer Count Is Capped

Section 416 does not allow an employer to classify an unlimited number of employees as key merely because they have officer status.

The maximum number treated as officers is generally the lesser of:

• 50 employees, or
• the greater of:
• 3 employees
• 10% of employees.^[8]

For the percentage calculation, the detailed rules include employee-count exclusions and rounding mechanics.^[8]

The practical point is that smaller companies often have an officer cap far below 50.

Example: 20-Employee Company

Ten percent of 20 employees:

2

Greater of:

• 3
• 2

is:

3

Lesser of:

• 50
• 3

is:

3

So no more than three employees can generally be treated as key solely because they are officers, subject to the detailed employee-count rules.^[8]

An additional employee can still be key through ownership.

The officer cap does not erase the owner tests.

Example: 200-Employee Company

Ten percent of 200:

20

Greater of:

• 3
• 20

is:

20

Lesser of:

• 50
• 20

is:

20

The ordinary officer cap is therefore 20.

If 35 people have officer titles and compensation above the applicable threshold, all 35 do not automatically enter the top-heavy numerator as key officers.

Example: 1,000-Employee Company

Ten percent:

100

Greater of:

• 3
• 100

is:

100

The statute then applies the 50-person ceiling.

Maximum:

50 officers

under the ordinary officer-count rule.^[8]

Where more people qualify as officers than the cap permits, the applicable rules generally select the highest-compensated qualifying officers.^[8]

Route 2: More-Than-5% Owner

The second route is simpler and often more consequential.

A 5-percent owner for Section 416 purposes generally means someone who owns more than 5% of the relevant ownership interest under the applicable corporate or noncorporate rules.^[4][5]

The statutory label says:

5-percent owner

The operative percentage test says:

more than 5%.

That distinction is worth preserving.

Exactly 5% Is Different

Direct ownership:

5.00%

does not exceed 5%.

Direct ownership:

5.01%

does.

Attribution rules can change the percentage, so direct ownership is not always the final answer.

But a compliance system that codes:

5% or more = key

is using the wrong boundary.

Compensation Does Not Matter for This Route

Suppose an employee owns:

8%

Annual compensation:

$40,000

The employee can be key through the more-than-5% owner branch.^[4][5]

There is no requirement that this owner also exceed:

• $235,000
• $150,000
• the HCE threshold

Ownership alone can do the work.

Route 3: More-Than-1% Owner With Compensation Over $150,000

The third route combines ownership and compensation.

The employee generally must:

1. own more than 1%, and
2. have annual compensation from the employer of more than $150,000.^[4][5]

Both conditions matter.

Unlike the officer threshold, the $150,000 amount in this branch is not the annually indexed key-officer threshold.

Example: 2% Owner Earning $149,000

Ownership:

2%

Compensation:

$149,000

The employee exceeds the ownership percentage.

The employee does not exceed $150,000 of compensation.

This route does not make the employee key.

Another route still could.

Example: 2% Owner Earning $150,001

Ownership:

2%

Compensation:

$150,001

Both tests are satisfied.

The employee can be key under the more-than-1% owner branch.

Exactly $150,000 Is Not Over $150,000

The statute uses compensation of more than $150,000 for this route.^[4][5]

Compensation:

$150,000

does not exceed $150,000.

Compensation:

$150,001

does.

Small boundary details matter in classification work because one employee's account can materially change a small plan's top-heavy ratio.

Family Attribution Can Change Ownership

Direct stock certificates do not tell the whole story.

IRS guidance warns that family aggregation rules can cause ownership held by certain relatives to be attributed to another person for key-employee purposes.^[4][5]

Relevant relationships can include:

• spouse
• child
• parent
• grandparent

depending on the applicable ownership rules and facts.^[4]

A census that asks only:

"What percentage do you directly own?"

can miss the result.

Example: Owner's Spouse

Founder owns:

100%

Spouse:

• directly owns 0%
• works for company
• earns $65,000

Applicable attribution rules can cause the spouse to be treated as a more-than-5% owner for the key-employee analysis.^[4]

The compensation level then becomes irrelevant under that ownership route.

This is why ownership and family data belong in the annual TPA census.

Different Last Name, Same Attribution Problem

An owner's adult child works for the company after marriage and uses a different surname.

Payroll cannot identify the family relationship from:

• name
• salary
• department

The employer has to supply the ownership/family facts.

A TPA cannot reliably infer them.

INV-083 explains why testing can be mathematically correct and still wrong because the population was built from incomplete data.

The Determination Date Is the Timing Anchor

This is where many summaries become misleading.

A plan is generally top-heavy for a plan year based on account balances or accrued benefits measured as of a determination date.^[3][7]

For an existing calendar-year plan, the determination date is generally the:

last day of the preceding plan year.^[3]

That means a 2026 top-heavy test usually begins with:

December 31, 2025

not December 31, 2026.

Why the 2026 $235,000 Threshold Can Be the Wrong Number for a 2026 Test

Suppose an employer asks in January 2026:

"Is our calendar-year 401(k) top-heavy for 2026?"

The determination date is generally:

December 31, 2025

The key-employee classification relevant to that determination generally uses the plan year containing that date:

2025.^[3][4][5]

The officer threshold for 2025 was:

$230,000.^[1]

So simply grabbing the newly published 2026 threshold of $235,000 can misclassify the test.

The current-year dollar limit and the plan year being tested are not always the same year.

Where the $235,000 Threshold Fits

The $235,000 officer threshold applies for 2026.^[1][2]

For a typical calendar-year plan, it becomes relevant to:

2026 key-employee status

and the December 31, 2026 determination date that generally feeds the plan's:

2027 top-heavy status.

This is a timing issue, not an exception to the threshold.

New Plans Need Separate Timing Analysis

A newly established plan does not always fit the simple:

prior December 31

example.

Top-heavy rules contain special determination-date provisions for a plan's first year.^[7]

Do not force the calendar-year existing-plan timeline onto:

• new plans
• short plan years
• plan-year changes

Use the actual Section 416 determination-date rule for the facts.

What Does "Top-Heavy" Mean?

For a defined contribution plan, top-heavy status generally exists when the aggregate account balances attributable to key employees exceed:

60%

of the applicable aggregate account balances for all employees after applying the required adjustments.^[3][4][7]

A simplified ratio is:

Key employee balances ÷ applicable total plan balances

If the result is greater than 60%, the plan is generally top-heavy.

The actual calculation can require adjustments for distributions, related plans and other Section 416 rules.

Example: 62% Key Balances

Applicable key employee account balances:

$3.1 million

Applicable total account balances:

$5.0 million

Ratio:

$3.1 million ÷ $5.0 million = 62%

That exceeds 60%.

The plan is generally top-heavy, assuming the calculation has applied the required rules correctly.

Misclassifying One Owner Can Flip the Result

Assume plan assets:

$2 million

Initially identified key balances:

$1.05 million

Ratio:

52.5%

Not top-heavy.

The employer forgot that an owner's spouse has a:

$250,000

account and is treated as key through attribution.

Corrected key balances:

$1.30 million

Corrected ratio:

65%

The plan can move from passing to top-heavy because of one classification error.

That is why ownership data is not administrative trivia.

What Happens If the Plan Is Top-Heavy?

A top-heavy 401(k) can become subject to additional requirements intended to provide minimum benefits to non-key employees.^[4][6][7]

For a defined contribution plan, this can include an employer minimum contribution generally up to:

3% of compensation

for eligible non-key employees, subject to the detailed rules and the contribution percentage provided to key employees.^[4]

Top-heavy plans are also subject to minimum accelerated vesting standards for applicable employer contributions.^[6][7]

The actual plan document should contain the required top-heavy provisions.

Key Employees Do Not Receive the Top-Heavy Minimum Because They Are Key

The minimum contribution rule is designed for:

non-key employees.^[4]

A key employee can receive contributions under the plan's ordinary formula.

The special top-heavy minimum is not a reward for being key.

It is part of the protection for non-key employees when too much plan value is concentrated among key employees.

Safe Harbor Plans Need Precise Language

A common shortcut says:

"Safe harbor 401(k)s are never top-heavy."

That is too broad.

IRS states that the top-heavy rules do not apply to a safe harbor 401(k) that consists solely of the qualifying safe-harbor contributions and elective deferrals under the applicable rules.^[3][6][7]

A plan with additional contributions or features can require further analysis.

INV-053 explains the safe-harbor structures.

SIMPLE 401(k)s Are Different

IRS states that SIMPLE 401(k) plans are not subject to the ordinary top-heavy plan requirements.^[6][7]

That exemption should not be generalized to every small-employer 401(k).

Plan type matters.

Key Employee vs. Highly Compensated Employee

These definitions overlap enough to create confusion and differ enough to cause errors.

The same employee can be:

• both
• HCE only
• key only
• neither

Do not carry one classification list into the other test.

Example: HCE but Not Key

Employee:

• owns 0%
• not an officer
• earned $250,000 in the relevant HCE lookback year

The employee can be an HCE under the compensation test.

Without officer or ownership facts that satisfy Section 416, the employee is not automatically key.

High compensation alone does not create a general key-employee category.

Example: Key Owner With Modest Compensation

Employee:

• owns 7%
• earns $75,000

The employee can be key because of the more-than-5% ownership route.

The employee can also be an HCE because HCE rules have their own more-than-5% ownership route.

Same result.

Different statutory definitions.

Example: Key but HCE Analysis Requires Its Own Year

Employee becomes a 2% owner in 2026 and earns:

$200,000

The more-than-1% owner branch can make the employee key for the relevant 2026 key-employee analysis.

HCE classification must still be run under the HCE rules, including their current/prior-year ownership and prior-year compensation framework.

Do not infer one result from the other without running both tests.

Compensation Definitions Can Differ

IRS warns that statutory compensation definitions must be used when required for:

• key employee determinations
• top-heavy minimums
• plan limits.^[9]

A plan's definition of compensation for:

employer match

is not automatically the compensation amount used for the key-employee test.

That distinction can matter when payroll separately tracks:

• base salary
• bonus
• commissions
• fringe compensation

The compliance feed should supply the compensation definition the test requires.

Officer Compensation Uses the Relevant Plan Year

Unlike the HCE compensation route, which generally looks to prior-year compensation, the officer branch of key-employee status looks to annual compensation for the relevant plan year under the Section 416 framework.^[4][5][8]

That difference is easy to miss when the TPA runs both classifications from one census.

The labels should be generated separately.

Former or Terminated Employees Can Still Matter

Top-heavy testing is not limited to whoever appears on today's active payroll.

IRS guidance notes that key-employee analysis can include employees who were in the relevant status during the applicable period, including people who later terminated or died.^[4]

The top-heavy ratio has additional rules for:

• former employees
• prior distributions
• people who have not performed services for specified periods

The annual testing software should apply those rules.

An HR roster filtered to:

active employees only

is not a sufficient top-heavy dataset.

The Employer Should Review the Key List Before the Ratio

The useful review order is:

1. officers
2. officer compensation
3. direct ownership
4. attributed ownership
5. more-than-1% owners
6. compensation over $150,000 for that route
7. correct determination-date year
8. officer-count cap
9. key account balances
10. 60% ratio

Starting with the ratio hides classification mistakes inside the numerator.

A "Pass" Can Be Wrong for the Same Reason as a "Fail"

Suppose the TPA report says:

Top-heavy ratio: 57% — PASS

That number is only useful if the employer supplied:

• complete ownership
• family relationships
• officer status
• correct compensation
• correct plan-year data
• all relevant account balances

The calculation engine cannot repair facts it never received.

Practical Owner Review

Each year, ask:

Who owns more than 5%?

Include attribution.

Who owns more than 1%?

Then test annual compensation against $150,000.

Who actually functions as an officer?

Do not rely only on title.

Which qualifying officers exceed the indexed threshold for the correct year?

For 2026, that threshold is $235,000.^[1][2]

Does the officer cap remove any otherwise qualifying officers?

Apply the statutory count.

Which plan year contains the determination date?

This selects the relevant year's key classification.

That sequence is short enough to use and strong enough to catch the common errors.

Frequently Asked Questions

What is a key employee in a 401(k)?

A key employee is an employee who meets one of the Section 416 categories used for top-heavy testing: an officer above the applicable indexed compensation threshold, a more-than-5% owner, or a more-than-1% owner with compensation over $150,000.^[4][5]

What is the key-employee officer threshold for 2026?

The indexed officer compensation threshold is $235,000 for 2026.^[1][2]

Was the threshold different in 2025?

Yes. The 2025 officer threshold was $230,000.^[1]

If I am testing whether a calendar-year plan is top-heavy for 2026, do I use $235,000?

Not automatically. An existing calendar-year plan generally uses December 31, 2025 as its determination date for the 2026 top-heavy year. The relevant key status is therefore generally based on the plan year containing that date—2025—when the officer threshold was $230,000.^[1][3][4]

Is every officer earning over $235,000 a key employee in 2026?

Not necessarily. The person must qualify as an officer under the applicable rules, and the statutory officer-count cap can limit how many employees are treated as key solely because of officer status.^[8]

Is a 5% owner a key employee?

The statutory "5-percent owner" test generally means more than 5% ownership. Exactly 5% does not exceed the threshold on direct ownership alone.^[4][5]

Does a more-than-5% owner need to earn $235,000?

No. Compensation does not have to exceed the officer threshold for the more-than-5% owner route.^[4][5]

What is the rule for a 1% owner?

A person generally must own more than 1% and have annual compensation from the employer of more than $150,000 to qualify under that route.^[4][5]

Is the $150,000 owner threshold indexed for inflation?

The statutory more-than-1% owner rule uses $150,000. It is separate from the annually indexed officer threshold.^[2][5]

Can family ownership make me a key employee?

Yes. Family attribution rules can affect ownership for the key-employee determination.^[4][5]

Is a key employee the same as an HCE?

No. Key employee status is used for top-heavy testing. HCE status is used for ADP/ACP and other nondiscrimination rules. INV-084 explains the HCE definition.

What percentage makes a 401(k) top-heavy?

A plan is generally top-heavy when more than 60% of the applicable plan value is attributable to key employees after applying the required Section 416 rules.^[3][6][7]

What happens when a 401(k) is top-heavy?

The employer can be required to provide minimum contributions to eligible non-key employees and satisfy accelerated minimum vesting requirements.^[4][6][7]

Are safe harbor 401(k)s exempt from top-heavy rules?

Some are. IRS states that a qualifying safe harbor 401(k) consisting solely of the applicable safe-harbor contributions and elective deferrals can be exempt. Additional contribution structures can change the analysis.^[3][6][7]

The Year Check Prevents the Most Expensive Error

Before classifying a single officer, write down:

Plan year being tested: ______ Determination date: ______ Plan year containing that date: ______ Officer threshold for that year: ______

Then identify owners and officers.

That four-line check prevents a subtle mistake: using a current published dollar limit in a top-heavy calculation whose determination date belongs to the prior year.

Once the year is right, the three key-employee routes are manageable.

Sources & References

1. IRS: COLA Increases for Dollar Limitations on Benefits and Contributions
2. IRS: Notice 2025-67 — 2026 Cost-of-Living Adjustments
3. IRS: Is My 401(k) Top-Heavy?
4. IRS: 401(k) Plan Fix-It Guide — Top-Heavy Minimum Contributions
5. IRS: Fixing Common Plan Mistakes — Top-Heavy Errors in Defined Contribution Plans
6. IRS: 401(k) Plan Qualification Requirements
7. IRS Publication 560: Retirement Plans for Small Business
8. 26 CFR §1.416-1 — Questions and Answers on Top-Heavy Plans
9. IRS: Avoiding Compensation Errors in Retirement Plans

Educational Disclaimer

ROIStreet publishes educational content about retirement-plan testing and administration. This article is not legal, tax, fiduciary or plan-administration advice. Key-employee and top-heavy determinations depend on the plan year, ownership and attribution, officer status, compensation, related employers, plan documents and current law.

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