If you miss a payment on a 401(k) loan, federal rules give you until the last day of the calendar quarter following the quarter in which the payment was missed to make it up. That’s the outer limit of the 401(k) loan cure period. Depending on when the missed payment falls, that window can run anywhere from just over three months to nearly six. Your plan can require you to cure sooner, but it cannot extend past the federal ceiling. Miss the deadline, and the IRS treats your entire outstanding loan balance as a taxable distribution.1eCFR. 26 CFR 1.72(p)-1 – Loans Treated as Distributions
How the Deadline Falls on the Calendar
The rule is quarter-based, not a fixed number of days. Find the calendar quarter of the missed payment, then look to the last day of the next quarter. That’s your cure deadline.1eCFR. 26 CFR 1.72(p)-1 – Loans Treated as Distributions
- Miss a payment on January 15. That’s Q1. The cure period runs through June 30, roughly five and a half months.
- Miss a payment on March 28. Still Q1, so the deadline is still June 30. Now you have about three months.
- Miss a payment on April 5. That’s Q2. The deadline moves to September 30.
Timing luck is real here. A payment missed on the first day of a quarter carries almost twice the cure window of one missed on the last day. If a payment is going to be tight and you have any choice about when it hits, the earlier in the quarter it slips, the more recovery time you get.
Partial Payments Don’t Stop the Clock
Sending in part of what you owe does not satisfy the cure period. The IRS requires the missed installments to be fully corrected inside the cure window. If you owed $500 in a missed month, you need the full $500 (plus any additional installments that came due during the cure period) resolved before the deadline. A partial payment does not prevent the entire outstanding balance from being deemed distributed.2Internal Revenue Service. Issue Snapshot – Plan Loan Cure Period
The penalty for coming up short is out of proportion to the miss. It’s not just the missed installment that becomes taxable. It’s the whole outstanding loan balance, including accrued interest, as of the last day of the cure period.1eCFR. 26 CFR 1.72(p)-1 – Loans Treated as Distributions Miss $500 on a $15,000 loan, fail to cure it in time, and you owe income tax on the full $15,000.
Your Plan Can Set a Shorter Deadline
The quarter-end rule is a ceiling, not a floor. Plans can allow the full federal window, or they can require you to cure faster. The details live in your Summary Plan Description, which spells out how long the plan waits before treating a loan as delinquent, the procedure for submitting makeup payments, and whether the plan offers any internal grace period at all.3Internal Revenue Service. Retirement Topics – Loans
Some plans use a short internal grace period, often 30 or 60 days, to absorb payroll timing issues and processing delays, then start the cure countdown. Others align the plan grace period with the full federal maximum. No plan can push past that maximum. If you’re falling behind, pull up the plan document before you guess; the internal deadline is what actually governs your account.
Leaving Your Job Usually Starts the Clock
Most 401(k) loans are repaid through payroll deduction. When you separate from the employer, those deductions stop. At that point the loan typically goes into default and the cure period begins running. If you can’t repay the balance in full before the cure window closes, the remaining amount becomes a deemed distribution.4Internal Revenue Service. Retirement Plans FAQs Regarding Loans
Some plans allow former employees to keep making payments directly, but that’s the exception. If you’re weighing a job change with a loan outstanding, read your plan’s rules on separation before you give notice.
Leaves and Military Service Are Handled Separately
Not every gap in payments triggers the cure period. Federal rules let plans suspend loan repayments for up to one year while you’re on an unpaid leave of absence. The five-year overall repayment deadline doesn’t move, so when you come back you make up the lost time either by increasing your remaining payments or by making a lump-sum catch-up.5Internal Revenue Service. 401(k) Plan Fix-It Guide – Participant Loans Don’t Conform to the Requirements of the Plan Document and IRC Section 72(p)
Active-duty military service gets more room. Plans can suspend repayments for the entire period of service, and the five-year clock is extended by the length of that service. Two years of service can mean up to seven years total from the original loan date to finish repayment.6Internal Revenue Service. Retirement Plans FAQs Regarding USERRA and SSCRA
What Happens If You Miss the Cure Deadline
Once the cure period expires without full correction, the plan administrator reclassifies the entire outstanding loan balance, including accrued interest, as a deemed distribution. What was a nontaxable loan becomes a taxable event, reported to the IRS on Form 1099-R.1eCFR. 26 CFR 1.72(p)-1 – Loans Treated as Distributions7Internal Revenue Service. Instructions for Forms 1099-R and 5498 – Section: Loans Treated as Distributions
The full amount is added to your ordinary income for the year. If you’re under 59½, the 10% early withdrawal penalty typically applies on top of your regular tax.8Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions On a $15,000 defaulted loan, a 45-year-old in the 22% federal bracket would owe roughly $3,300 in income tax plus a $1,500 penalty. State income tax may add to that.
Here’s the part that catches people off guard. A deemed distribution doesn’t wipe out the loan. You still owe the balance to the plan, and it stays on the books as an outstanding obligation. You get taxed as if you received the money, but the plan doesn’t actually release anything new to you.9Internal Revenue Service. Plan Loan Failures and Deemed Distributions
Loan Offset at Separation Is Different
If your loan defaults because you left the employer (or the plan terminated), what happens is technically a loan offset, not a deemed distribution. The plan reduces your account balance by the unpaid loan amount and treats it as an actual distribution. Unlike a deemed distribution, a loan offset can be rolled over.4Internal Revenue Service. Retirement Plans FAQs Regarding Loans
A loan offset that qualifies as a Qualified Plan Loan Offset, meaning it was triggered by plan termination or separation from service, gets an extended rollover deadline. Instead of the standard 60 days, you have until your tax return filing due date for the year of the offset, including extensions. That’s usually April 15 of the following year, or October 15 with an extension. You’d need to come up with the cash from another source to deposit into an IRA, but doing so avoids the tax hit entirely.10Internal Revenue Service. Plan Loan Offsets
After a Default
You can keep making payments on the loan even after a deemed distribution. Those payments don’t refund the tax you already paid, but they build after-tax basis in the plan. That basis matters at retirement: when you take a real distribution later, the portion you repaid after the default isn’t taxed a second time.1eCFR. 26 CFR 1.72(p)-1 – Loans Treated as Distributions
Borrowing again is a separate question. Federal law doesn’t outright bar it, but plans commonly restrict future loans for participants with a prior default. Some impose a waiting period; others block new loans while an old deemed distribution is still on the books. The outstanding balance, even after being deemed distributed, still counts against your $50,000 borrowing limit, so it can sharply reduce or eliminate what you’re eligible to borrow next.4Internal Revenue Service. Retirement Plans FAQs Regarding Loans Check the plan document before you count on a fresh loan.