(UNITED STATES) — Workers borrowing from employer retirement plans in 2026 face a narrow set of IRS rules that can turn a routine 401(k) loan into taxable income if the plan does not permit loans, the amount exceeds legal limits, payments stop after a job change, or an unpaid balance becomes a loan offset.

The rules reach beyond rank-and-file employees. H-1B employees, L-1 workers, former students on F-1 OPT, green card holders, NRIs returning to India, founders and solo 401(k) owners all face added exposure if payroll deductions stop, U.S. contact details lapse, or a plan treats an unpaid loan as distributed even though no cash changes hands.

Plan Eligibility and Loan Limits

A plan may allow loans, but it does not have to. The IRS says a qualified plan may provide for loans if the plan document allows them, and the same document can set its own borrowing and repayment conditions within federal limits.

Retirement accounts outside that framework follow a different rule. IRAs and IRA-based plans, including SEP, SARSEP and SIMPLE IRA plans, do not permit loans, while loans are generally possible only from qualified plans satisfying Section 401(a), certain annuity plans, 403(b) plans and governmental plans.

That distinction shapes choices for self-employed workers and small business owners deciding between a SEP IRA, a SIMPLE IRA and a solo 401(k). A solo 401(k) may permit loans if its plan document allows them; a SEP IRA or SIMPLE IRA does not offer the same borrowing feature.

Federal loan limits also cut off many borrowers sooner than they expect. The IRS says the maximum amount a participant may borrow is generally the lesser of $50,000 or 50% of the vested account balance, and if 50% of the vested account balance is less than $10,000, a plan may allow borrowing up to $10,000.

Vesting matters. An employee may see a larger balance online, but unvested employer matching funds do not necessarily count toward loan availability.

Multiple loans complicate the calculation further. The IRS says a new loan plus existing loans cannot exceed the plan maximum, and the $50,000 ceiling is reduced by the difference between the highest outstanding loan balance during the prior 12-month period and the outstanding balance on the date of the new loan.

That rule blocks repeated borrowing and quick repayment from sidestepping the cap. Workers considering a second 401(k) loan need to review the prior 12-month loan history, not just the balance visible on the day they apply.

Repayment Rules and Common Pitfalls

Repayment rules are just as strict. The IRS says a compliant plan loan must be a legally enforceable agreement that states the date, amount and repayment schedule, carries a reasonable interest rate, is secured, and requires level amortized payments at least quarterly.

Most loans must be repaid within 5 years. The exception applies when the participant uses the money to buy a principal residence.

Repayments do not count as fresh retirement savings. They are repayments of borrowed principal and interest, not new elective deferrals, catch-up contributions or deductible contributions.

Trouble starts when payments stop. A plan loan is not taxed like a normal distribution if it satisfies the Section 72(p)(2) exception covering loan amount and repayment requirements, but a loan that does not meet those rules or is not repaid according to its terms is generally treated as a taxable distribution.

Ordinary payroll disruptions can trigger that result. Unpaid leave, a payroll system change, a merger, a transfer, a relocation outside the United States or a switch to a new employer can interrupt deductions that many workers stop checking once the loan begins.

The IRS Fix-It Guide gives some room to cure missed payments, but not much. The cure period cannot go beyond the end of the quarter following the quarter in which the missed payment was due.

Employment Changes and Cross-Border Risks

Employment changes create a second hazard because many plans demand fast repayment after separation. If the participant does not repay, the plan may offset the unpaid balance against the retirement account, reducing the account to satisfy the defaulted loan.

That risk falls heavily on mobile workers. H-1B employees changing sponsors, workers laid off in tech cutbacks, employees transferred abroad and NRIs returning to India can lose payroll deductions overnight while the old plan loan keeps creating U.S. tax consequences.

Deemed Distributions vs. Loan Offsets

Federal tax law draws a sharp line between a deemed distribution and a plan loan offset. A deemed distribution generally arises when the loan fails tax rules, such as missed repayments, and the IRS treats the amount as taxable, including possible early distribution tax, but not as eligible for rollover into another retirement plan.

A plan loan offset works differently. When the plan reduces the participant’s account balance to repay the loan, the unpaid balance becomes a plan loan offset amount, which the IRS treats as an actual distribution for rollover purposes and which may be eligible for rollover.

The deadline can be longer in one category of offsets. If a taxpayer has a qualified plan loan offset amount, the IRS says the taxpayer has until the tax return due date, including extensions, for the year of the offset to complete an eligible rollover.

That relief applies in a narrower set of cases, including offsets tied to termination of the qualified employer plan or failure to meet repayment terms because of the employee’s severance from employment, so long as the loan met the applicable requirements immediately before that event. Even then, the worker usually needs outside cash to replace the offset amount in another eligible retirement account.

Tax Reporting and Compliance

Reporting can arrive even when no check ever lands in the mail. The IRS 2026 instructions for Form 1099-R include loans treated as deemed distributions under Section 72(p) among reportable items, and they also note that qualified plan loan offset amounts and plan loan offset amounts can be eligible rollover distributions.

That catches many borrowers off guard. A worker may see a tax form without any cash payout because the plan treated the unpaid loan balance as distributed or offset inside the account.

The form carries several numbers that can shape the tax result, including Box 1 gross distribution, Box 2a taxable amount and Box 7 distribution code. The instructions also warn that distribution codes are used by the IRS to determine whether the recipient properly reported the distribution.

Cross-border moves make those notices easier to miss and harder to fix. An H-1B employee who joins a new sponsor may stop payroll repayments, an L-1 executive transferred abroad may leave U.S. payroll entirely, and a former student worker may move without updating plan contact details.

The tax obligation remains in the United States after the move. If a loan defaults or the plan applies a loan offset, the worker may need to report the amount on a U.S. return, evaluate rollover options, consider withholding and keep records for foreign tax treatment.

Preventive Steps for Borrowers

Basic administrative steps matter before departure or termination. Workers should ask the plan administrator for the payoff amount, confirm what happens after employment ends, update mailing and email addresses, check whether automatic repayments continue, save the loan agreement and repayment history, watch for Form 1099-R, confirm rollover deadlines and ask whether the plan permits repayment after employment ends.

Special Rules for Owners and Fiduciaries

Owners and fiduciaries face a different problem because the issue is not limited to missed payments. The IRS says prohibited transactions are transactions between a retirement plan and a disqualified person that are prohibited by law, including using plan income or assets for the benefit of a disqualified person, a fiduciary using plan assets in the fiduciary’s own interest, selling or leasing property between the plan and a disqualified person, lending money or extending credit, and furnishing goods or services between the plan and a disqualified person.

That does not bar every owner loan. The IRS says a prohibited transaction does not occur where a disqualified person receives a benefit to which the person is entitled as a plan participant or beneficiary, provided the benefit is figured and paid under the same terms as for all other participants and beneficiaries.

Risk rises when an owner or fiduciary gets special treatment, uses plan assets for business purposes, avoids repayment, secures an unusually favorable interest rate or treats the retirement account as a private funding source. Solo 401(k) owners therefore face two layers of analysis: whether the plan permits the loan at all, and whether the transaction stays within the same rules that govern other participants.

The tax cost can escalate quickly. A disqualified person who participates in a prohibited transaction must pay an initial tax of 15% of the amount involved for each year, or part of a year, in the taxable period, and if the transaction is not corrected within the taxable period, an additional tax of 100% of the amount involved may apply.

Common Errors to Avoid

Several recurring errors run through these cases: assuming every 401(k) offers loans, borrowing against the total account instead of the vested balance, ignoring prior loans when calculating a new limit, treating the debt like a credit card, and forgetting the account after leaving a job or leaving the country. Another common mistake is assuming a loan offset is harmless because no cash was received.

The federal framework leaves little room for casual borrowing. A 401(k) loan can solve a short-term cash need, but the plan must permit it, the amount must fit within the statutory cap, payments must stay on schedule, and workers changing jobs or moving abroad need to resolve the debt before payroll ends or account notices start going unread.