What Is a 401(k) Loan?

Research. Education. Perspective.

A 401(k) loan allows a participant in a plan that permits loans to borrow against part of the participant's vested retirement-plan balance.

When the loan satisfies the tax rules and is repaid according to its terms, the borrowed amount is generally not treated as a taxable distribution when the loan is made.^[1][2][9]

That tax treatment is conditional.

A loan that exceeds the allowed amount, lasts too long, or falls out of compliance with its repayment schedule can become a taxable distribution.^[2][4][8]

Key Takeaways

• A 401(k) plan may offer participant loans, but it is not required to do so.^[1][2][9]
• The general statutory borrowing maximum is the lesser of $50,000 or 50% of the participant's vested account balance.^[1][2]
• A special rule can permit borrowing up to $10,000 when 50% of the vested balance is below $10,000, but a plan is not required to offer that exception.^[1][2]
• Prior plan loans can reduce the available $50,000 ceiling under a one-year lookback calculation.^[2][7]
• Most loans must be repaid within five years.^[1][2][4]
• A loan used to purchase the participant's principal residence can qualify for a repayment period longer than five years.^[2][4]
• Payments generally must be substantially level, include principal and interest, and be made at least quarterly.^[2][4]
• Loan repayments are not plan contributions.^[2]
• A default can produce a taxable deemed distribution.^[2][4]
• A loan offset after a job separation is a different event and can be an eligible rollover distribution.^[5][6]

What Is a 401(k) Loan?

> ROIStreet Definition > > A 401(k) loan is a participant loan made under a workplace retirement plan that permits borrowing and is structured to satisfy the plan document and federal tax requirements.

The participant is not borrowing from a bank.

The plan provides the loan from the participant's retirement-plan assets under written loan terms.

Repayments of principal and interest are made back under the plan's loan arrangement.

Does Every 401(k) Allow Loans?

No.

Federal tax law permits qualified plans to offer participant loans, but it does not require every 401(k) plan to include a loan feature.^[2][9]

A plan that offers loans must establish procedures governing matters such as:

• how a participant applies
• minimum and maximum loan amounts
• repayment methods
• interest
• permitted number of outstanding loans
• default rules
• treatment when employment ends

The plan document and summary plan description are therefore essential sources.

Is a 401(k) Loan Taxable When Taken?

A properly structured participant loan generally is not treated as a taxable distribution when made.^[1][2][9]

The exception from distribution treatment depends on continued compliance with the loan rules.

If the loan violates the permitted:

• amount
• term
• repayment schedule

the tax result can change.^[2][4][8]

This is why a 401(k) loan is better viewed as a conditional nontaxable borrowing arrangement, not simply unrestricted access to retirement money.

The General 401(k) Loan Limit

The general maximum amount a plan can permit is the lesser of:

• $50,000, or
• 50% of the participant's vested account balance.^[1][2]

The participant's vested balance matters.

Unvested employer contributions generally cannot simply be counted as fully available collateral for the calculation.

Example: $80,000 Vested Balance

Assume:

• vested account balance: $80,000
• no other recent or outstanding plan loans

50% of vested balance:

$40,000

Because $40,000 is less than $50,000, the general maximum permitted loan would be:

$40,000

The plan itself can impose a lower limit.

Example: $200,000 Vested Balance

Assume:

• vested account balance: $200,000
• no prior-loan adjustment

50% of vested balance:

$100,000

But the dollar ceiling is $50,000.

The general maximum is therefore:

$50,000

The participant cannot simply borrow $100,000 because it equals half the vested balance.

The Optional $10,000 Rule

The tax rules include a special exception for smaller accounts.

If 50% of the vested account balance is less than $10,000, the permitted maximum can potentially be the greater of:

• $10,000, or
• 50% of the vested balance,

subject to the overall $50,000 ceiling.^[2]

However, IRS guidance makes an important point:

Plans are not required to provide this $10,000 exception.^[1]

Additional security can also be required for the amount that exceeds 50% of the vested account balance under the applicable rule.^[8]

Example: Small Account

Assume a participant has:

$14,000 vested

Half is:

$7,000

Under the special statutory rule, a plan could potentially allow a loan up to $10,000 if its terms permit the exception and the applicable security requirements are satisfied.

But the participant cannot assume the plan offers that feature.

Prior Loans Can Reduce the $50,000 Limit

The statutory loan calculation becomes more complicated when a participant has had other plan loans during the preceding year.

The $50,000 ceiling is reduced by the difference between:

• the highest outstanding balance of plan loans during the one-year period ending the day before the new loan, and
• the outstanding loan balance on the date of the new loan.^[2][7]

This rule prevents a participant from repeatedly paying down and immediately re-borrowing the full statutory maximum.

Simplified Prior-Loan Example

Suppose:

• highest loan balance during the prior 12 months: $30,000
• current outstanding balance: $20,000

Difference:

$30,000 − $20,000 = $10,000

The $50,000 statutory ceiling is reduced by that $10,000 difference:

$50,000 − $10,000 = $40,000

The participant must then apply the other applicable limits, including the vested-balance test and current outstanding loan balance.

Multiple-loan calculations can become technical, so the plan administrator's calculation should control the actual amount available.

Can a Participant Have More Than One 401(k) Loan?

Potentially.

IRS guidance permits more than one outstanding participant loan, but the plan does not have to allow multiple loans.^[2]

All applicable borrowing limits still apply.

A participant cannot evade the aggregate limit simply by taking several smaller loans.

The Five-Year Repayment Rule

Most compliant participant loans must require repayment within:

five years.^[1][2][4]

This does not mean the participant can wait five years and repay everything at once.

The loan also has payment-frequency and amortization requirements.

Substantially Level Payments

A plan loan generally must use substantially level payments that include:

• principal
• interest

and are made at least:

quarterly.^[2][4]

A common plan design uses payroll deductions more frequently than quarterly.

The tax rule establishes a minimum payment frequency, not a requirement that every plan use quarterly payments.

Principal-Residence Exception

A loan used to purchase the participant's principal residence can qualify for a repayment term longer than five years.^[1][2][4]

The exception is not a general “housing expense” exception.

It relates to purchasing the participant's principal residence.

The plan's loan procedures determine the available repayment period.

Ordinary Loan vs. Principal-Residence Loan

The longer term is the main tax-rule distinction.

Loan Repayments Are Not Contributions

IRS loan FAQs expressly state that loan repayments are not plan contributions.^[2]

That means repaying principal and interest should not be confused with making new employee elective deferrals.

A participant can potentially have both:

• regular payroll 401(k) contributions, and
• separate loan repayments

occurring at the same time.

The plan's payroll administration determines how each is collected.

What Happens to the Interest?

A plan loan requires interest as part of the repayment schedule.^[2][4]

The participant is repaying the plan rather than paying a conventional outside lender.

That feature is sometimes described as “paying interest to yourself.”

The phrase is incomplete, because borrowing still has economic consequences.

For example:

• money used for the loan is no longer invested in the same portfolio assets
• investment returns during the loan period can differ from the loan interest
• payroll cash flow is reduced by repayment obligations
• leaving the employer can create additional risk

Interest returning to the account does not make the transaction costless.

Investment Opportunity Cost

Assume a participant borrows $30,000 from a 401(k).

If that $30,000 would otherwise have remained invested, its return during the loan term is replaced by the economics of the participant-loan arrangement.

If markets rise strongly, the borrowed amount may miss some investment appreciation.

If markets fall, being out of those investments could produce a different result.

The future return is unknowable in advance.

This is an investment tradeoff rather than a guaranteed cost or benefit.

401(k) Loan vs. Hardship Distribution

A participant loan and a hardship distribution are fundamentally different.

IRS guidance specifically states that participant loans are not dependent on hardship.^[2]

A participant's reason for a plan loan does not generally have to satisfy the hardship-distribution standard.

What Happens If a Payment Is Missed?

Missing a required payment can cause the loan to violate the substantially level repayment requirement.^[4]

A plan can provide a cure period, but it is not required to do so.^[4]

If the plan offers the maximum cure period permitted by the regulations, the period can extend through the last day of the calendar quarter following the quarter in which the required installment was due.^[4]

A plan may provide a shorter cure period or none.

Cure-Period Example

Suppose a required loan payment is missed in February.

February falls in the first calendar quarter.

If the plan uses the maximum permissible cure period, the participant can potentially have until:

June 30

the last day of the following quarter, to correct the missed payment.^[4]

The written plan terms matter.

What Is a Deemed Distribution?

If a participant loan fails the tax requirements—for example because required payments are not timely cured—the outstanding amount can be treated as a deemed distribution.^[4][8]

Generally, previously untaxed amounts included in the deemed distribution become taxable income.

Depending on the participant's age and circumstances, an additional 10% tax on early distributions can also apply unless an exception is available.^[3]

A deemed distribution is a tax event even though the plan may continue to carry the loan obligation under its administrative rules.

A Deemed Distribution Is Not the Same as a Plan Loan Offset

These terms are easy to confuse.

Deemed distribution

A tax-law event caused when a participant loan fails to satisfy the applicable requirements.

Plan loan offset

An actual reduction of the participant's plan account balance to satisfy the unpaid loan.^[5]

The tax and rollover consequences differ.

What Happens to a 401(k) Loan When You Leave a Job?

The answer depends on the plan.

IRS guidance notes that a plan may require full repayment when employment ends.^[3]

Some plans can allow repayment to continue under their procedures.

Others may accelerate the loan or ultimately offset the unpaid balance against the participant's account when a distributable event occurs.

Job separation therefore deserves special attention before an employee decides what to do with the rest of the 401(k).

What Is a Plan Loan Offset?

A plan loan offset occurs when the plan reduces the participant's account balance to repay the outstanding loan.^[5]

For tax purposes, an offset is an actual distribution, not merely a deemed distribution.^[5]

Plan loan offset amounts are generally eligible rollover distributions, subject to the applicable rules.^[5]

This creates a potential path for avoiding current taxation by replacing the offset amount with outside funds and completing an eligible rollover.

Qualified Plan Loan Offset

A qualified plan loan offset, or QPLO, is a special type of offset that satisfies additional conditions.

IRS guidance generally describes a QPLO as an offset arising because of:

• termination of the qualified employer plan, or
• failure to meet loan repayment terms because the employee severed from employment,

where the loan otherwise satisfied the applicable requirements immediately beforehand.^[5]

The extended rollover period is one of the QPLO's most important features.

The Extended QPLO Rollover Deadline

An ordinary eligible rollover distribution generally has a 60-day rollover period.

A qualified plan loan offset can receive a longer deadline.

The participant generally has until the due date, including extensions, for the federal income-tax return for the taxable year in which the QPLO occurs to complete an eligible rollover of the offset amount.^[5][6]

This can be materially longer than 60 days.

QPLO Example

Assume:

• outstanding compliant plan loan when employment ends: $12,000
• plan later offsets that amount against the participant's account
• the offset qualifies as a QPLO

The participant does not receive $12,000 in cash.

Instead, the plan balance is reduced by $12,000 to extinguish the loan.

To roll over the offset amount, the participant generally must use $12,000 from other resources and deposit it into an eligible retirement plan by the applicable extended deadline.^[5][6]

If the amount is not rolled over, the taxable portion of the offset can be included in income.

Why Outside Cash Is Required for an Offset Rollover

An offset is not a cash payment.

The participant already received the economic benefit earlier when the loan proceeds were borrowed.

At offset, the plan reduces the retirement balance.

To restore the amount to tax-advantaged retirement status through a rollover, the participant must therefore supply replacement funds from elsewhere.

This can make the rollover right valuable but difficult to use in practice.

Can a Deemed Distribution Be Rolled Over?

A deemed distribution from a failed plan loan is not the same as an actual plan loan offset.

The special rollover treatment described for plan loan offsets should not be assumed to apply to every loan default.^[5]

This distinction is one reason accurate Form 1099-R reporting and plan-administrator information matter.

Form 1099-R Reporting

Plan loan defaults and offsets can generate Form 1099-R reporting.^[5]

IRS guidance distinguishes reporting codes for:

• deemed distributions, and
• plan loan offsets / QPLOs.

A participant should not infer the correct tax result only from the fact that no cash was received during the year.

A reduction in the plan account can still represent a taxable distribution.

Leave of Absence

The regulations can allow loan repayment suspension during a leave of absence of up to one year under specified conditions.^[2]

When the participant returns, the missed amounts generally must be made up so that the loan still satisfies the original maximum five-year term for an ordinary loan.^[2]

This can require:

• larger later payments, or
• another compliant catch-up method

under the plan.

Military Service

Special rules can permit repayment suspension during military service.^[2]

Military-service provisions can also interact with federal servicemember protections and plan administration.

Participants should use current plan and military-service guidance when this situation applies.

Spousal Consent

Some qualified plans can require spousal consent for a participant loan.^[2]

Whether consent applies depends on the type of plan and its provisions.

This is another reason the tax-law maximum alone does not determine whether a participant can actually borrow a given amount.

Does a 401(k) Loan Affect Credit?

A 401(k) participant loan is administered through the retirement plan rather than as an ordinary consumer loan from a bank.

The tax rules governing participant loans do not depend on conventional consumer-credit underwriting.

However, the practical loan process is plan-specific, and participants should review the plan's disclosures rather than assume that every plan operates identically.

Can a 401(k) Loan Be Refinanced?

Loan refinancing can be permitted in some circumstances, but it must continue to satisfy the section 72(p) amount, repayment-term and amortization rules.

IRS cure-period guidance includes examples where refinancing can be used as part of correcting missed payments within an allowed cure period.^[4]

Refinancing does not provide a general way to circumvent the five-year rule or statutory borrowing limit.

Multiple Loans and the One-Year Lookback

A participant thinking about a second loan should not simply calculate:

$50,000 − current loan balance

The prior 12-month highest balance can also reduce the available dollar ceiling.^[2][7]

This can make the maximum second loan smaller than expected.

The plan administrator should calculate the actual permitted amount before a participant relies on an estimate.

What Should a Participant Check Before Borrowing?

1. Does the plan permit loans?

No loan feature means no participant loan.

2. What is the vested balance?

The statutory percentage limit is based on vested value.

3. Are there other recent loans?

The one-year lookback can reduce available borrowing capacity.

4. What interest rate does the plan use?

The loan agreement controls.

5. How will payments be made?

Payroll deduction is common, but procedures vary.

6. Is the expected repayment term compliant?

Most loans must be repaid within five years.

7. Is the loan for a principal-residence purchase?

A longer repayment period can be available.

8. What happens if employment ends?

This can be one of the most important plan-specific provisions.

9. Does the plan provide a cure period?

Never assume a late payment can be fixed indefinitely.

10. What retirement investments will be displaced?

Borrowing changes the assets participating in market returns.

Worked Example: General Borrowing Limit

Assume:

• vested 401(k) balance: $90,000
• no prior plan loans in the relevant period

50% of vested balance:

$45,000

$50,000 statutory ceiling:

$50,000

Lesser amount:

$45,000

The maximum the tax rules would generally permit is $45,000.

The plan could still impose a lower cap.

Worked Example: $50,000 Ceiling

Assume:

• vested account balance: $300,000
• no loan-history adjustment

Half the vested balance is $150,000.

The general statutory maximum remains:

$50,000

A large account balance does not increase the ordinary dollar ceiling above $50,000.

Worked Example: Missed Payment

Assume:

• participant has a compliant plan loan
• a scheduled payment is missed in May
• the plan document provides the maximum regulatory cure period

May is in the second calendar quarter.

The maximum cure period can extend through:

September 30

the last day of the following calendar quarter.^[4]

If the failure is not corrected as required, the outstanding loan including accrued interest can become a deemed distribution under the applicable rules.^[4]

Worked Example: Job Change With Outstanding Loan

Assume:

• vested account balance before offset: $70,000
• outstanding loan: $10,000
• employee leaves the employer
• plan terms cause a qualifying offset

The plan might transfer or make available the remaining:

$60,000

while using $10,000 of account value to satisfy the loan.

The $10,000 offset can be treated as an actual distribution.^[5]

If it qualifies as a QPLO, the participant can potentially roll over the $10,000 by contributing replacement funds to an eligible retirement account by the extended tax-return due date.^[5][6]

Risks and Tradeoffs

A 401(k) loan can avoid an immediate taxable distribution when the rules are followed, but that does not make it risk-free.

Potential considerations include:

• reduced exposure to the investments that previously held the borrowed amount
• mandatory payroll cash flow for repayment
• job-change risk
• default taxation
• possible additional 10% tax
• plan fees
• limited borrowing capacity for future needs
• complexity when rolling over the remaining account

The relevance of each factor depends on the participant's circumstances.

Common 401(k) Loan Mistakes

Assuming $50,000 is automatically available

The vested-balance test and prior-loan rules can reduce the amount.

Ignoring the plan document

The tax code sets outside limits; the employer plan can be more restrictive.

Missing payments

A payment failure can become a taxable deemed distribution.

Assuming there is always a grace period

A plan does not have to provide the maximum cure period.

Forgetting about job-change provisions

Separation from employment can accelerate repayment or trigger an offset under plan terms.

Treating repayments as contributions

IRS guidance says loan repayments are not plan contributions.^[2]

Confusing a default with an offset

Deemed distributions and plan loan offsets have different rollover consequences.

Assuming a principal-residence loan has no repayment rules

The five-year limit can be extended, but the loan still needs a compliant repayment structure.

Frequently Asked Questions

How much can I borrow from a 401(k)?

Generally, the maximum permitted amount is the lesser of $50,000 or 50% of the vested account balance, subject to the optional small-balance rule and adjustments for prior plan loans.^[1][2]

Can I borrow $10,000 if my vested balance is only $15,000?

Potentially, if the plan offers the statutory small-balance exception and the applicable requirements are satisfied. Plans are not required to offer that exception.^[1][2]

How long do I have to repay a 401(k) loan?

Most participant loans must be repaid within five years.^[1][2]

Can a home-purchase loan last longer?

A loan used to purchase the participant's principal residence can qualify for a term longer than five years.^[2][4]

How often must payments be made?

The loan generally must provide for substantially level principal-and-interest payments at least quarterly.^[2][4]

Is a 401(k) loan taxable?

A compliant loan is generally not taxable when made. A loan that fails the applicable rules can become a taxable distribution.^[1][2][8]

Do I need a hardship to take a 401(k) loan?

No. IRS guidance distinguishes plan loans from hardship distributions and states that loans are not dependent on hardship.^[2]

What happens if I miss a payment?

A plan can provide a limited cure period. If the failure is not corrected, the outstanding balance can become a deemed distribution.^[4]

What happens to my loan if I leave my job?

Plan terms control. The plan may require repayment, allow continued payments in some cases, or ultimately offset the outstanding loan against the account.^[3][5]

What is a qualified plan loan offset?

A QPLO is a qualifying plan loan offset associated with plan termination or certain job-separation repayment failures. It can receive an extended rollover deadline through the tax-return due date, including extensions, for the year of the offset.^[5][6]

The Bottom Line

A 401(k) loan is not simply a withdrawal that happens to be repaid.

It is a regulated participant-loan arrangement.

To remain nontaxable, it generally must stay within the borrowing limits and comply with the required repayment structure.

The core federal rules are:

• generally no more than 50% of vested account value
• generally no more than $50,000
• normally repaid within five years
• substantially level principal-and-interest payments
• payments at least quarterly

But the employer plan can be more restrictive.

The most important risk often appears after the loan is made.

Missed payments can create a deemed distribution, and a job change can create a plan loan offset requiring the participant to decide whether to replace the offset amount with outside cash and complete a rollover.

For that reason, understanding the exit rules can be just as important as understanding how much the plan allows someone to borrow.

Sources & References

1. IRS: Retirement Topics — Plan Loans
2. IRS: Retirement plans FAQs regarding loans
3. IRS: Considering a loan from your 401(k) plan?
4. IRS: Issue Snapshot — Plan loan cure period
5. IRS: Plan loan offsets
6. IRS Topic No. 413: Rollovers from retirement plans
7. IRS: Borrowing limits for participants with multiple plan loans
8. IRS: Plan loan failures and deemed distributions
9. IRS: Hardships, early withdrawals and loans

Educational Disclaimer

ROIStreet publishes educational content intended to help readers understand workplace retirement-plan borrowing and distribution mechanics. Nothing in this article is personalized investment, tax, legal or financial advice, or a recommendation to borrow from or withdraw from a 401(k). Plan terms, employment status, tax circumstances and other borrowing alternatives can materially change the consequences.

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