Deemed Distribution vs Loan Offset: 1099-R Codes and Rollover Rules

When a retirement plan loan goes bad, the outcome falls into one of two categories, and the difference decides whether you can save the money with a rollover or just owe tax on it. A deemed distribution versus a loan offset is the distinction: a deemed distribution is a tax-only event where the IRS treats your unpaid loan balance as distributed even though nothing leaves your account, and a loan offset is an actual reduction of your account balance to cancel the loan. Only the offset is eligible for rollover. That single fact drives almost every practical decision you’ll make after a default.

What Triggers Each Outcome

Both events start the same way: you stop making the required payments on a 401(k) or similar plan loan. Most plans offer a cure period that runs through the end of the calendar quarter after the quarter you missed the payment, though a plan can shorten that window or skip it entirely.¹ Miss the cure deadline and the unpaid balance becomes a taxable event.

What kind of taxable event depends on your employment status. If you’re still working for the employer and haven’t hit any “distributable event” under the plan, the default creates a deemed distribution. If a distributable event has occurred, most commonly leaving your job, reaching the plan’s normal retirement age, or the employer terminating the plan, the same default produces a loan offset instead.²

Deemed Distribution: A Tax Bill With No Cash

A deemed distribution is exactly what it sounds like. The IRS deems the unpaid loan balance to be a distribution for tax purposes, but the plan doesn’t actually pay you anything. Your account balance doesn’t change. The loan stays on the plan’s books. You just owe income tax on the outstanding balance in the year the cure period expires, plus the 10% early withdrawal penalty if you’re under 59½.³

You’re paying tax out of pocket on money you can’t access. And because a deemed distribution is not an actual distribution of plan assets, it is not eligible for rollover under any circumstance. The 1099-R instructions state this directly.⁴

Establish Basis or Get Taxed Twice

After a deemed distribution, the amount reported on your 1099-R becomes your tax basis in the plan. Without that basis tracked properly, you’d be taxed a second time on the same dollars when you eventually take a real distribution in retirement. If your plan permits it, you can keep making payments on the defaulted loan even after the deemed distribution. Those repayments are treated as after-tax contributions and add to your basis, which shields the same money from being taxed again later.²

The Loan Still Counts Against Future Borrowing

People often assume that once a loan has been taxed as a distribution, it’s gone. It isn’t. The plan continues to treat the unpaid balance as an outstanding loan for purposes of the $50,000 borrowing limit. A $30,000 deemed distribution means you can’t turn around and take a fresh $50,000 loan from the plan. Interest keeps accruing on the original loan for that calculation, but the accruing interest does not trigger a second deemed distribution.

Loan Offset: A Real Distribution You Can Roll Over

A loan offset is a real transaction. The plan reduces your account balance by the outstanding loan amount, which cancels the debt and counts as an actual distribution of plan assets. This typically happens when you separate from service with an outstanding loan, when you reach the plan’s normal retirement age, or when the employer terminates the plan.²

Because it’s a real distribution, it’s rollover eligible. You can move the offset amount into an IRA or another qualified plan and avoid the tax and penalty entirely. The complication is cash: the plan didn’t hand you money for the offset portion, so you have to come up with equivalent funds from your own resources to deposit into the receiving account. Partial rollovers are permitted. Whatever you don’t roll over is taxed as ordinary income, plus the 10% penalty if you’re under 59½.³

QPLO Versus Standard Offset: The Deadline That Decides Everything

Not every loan offset gets the same rollover clock, and this is where the guidance you’ll find online often oversimplifies. The Tax Cuts and Jobs Act of 2017 created a specific subcategory called a “qualified plan loan offset,” or QPLO. A QPLO occurs only when the offset results from the plan terminating or from your failure to repay because you separated from service.⁵

If your offset is a QPLO, you have until the due date of your federal tax return for the year of the offset, including extensions, to complete the rollover. For most filers that means April 15 of the following year, or October 15 with an extension.⁶

If the offset doesn’t meet the QPLO definition, you’re back to the standard 60-day rollover window.⁷ Most offsets tied to job loss or plan termination will qualify as QPLOs, but confirm with your plan administrator how the event is being reported before you assume you have until tax day.

How to Tell Which One You Have: The 1099-R Codes

Box 7 of Form 1099-R identifies the event, and the code determines what you can do about it.

Code L flags a deemed distribution under Section 72(p). The loan balance appears in Box 1 and Box 2a. A second code, such as Code 1 for early distribution, may appear alongside it. Code L tells the IRS the amount is not eligible for rollover.⁴
Code M flags a qualified plan loan offset. The offset is reported like any actual distribution, with Code M signaling that the extended rollover deadline applies.⁴
A regular loan offset without Code M is reported using the standard distribution codes for your age and situation. It’s still rollover eligible, but only inside the 60-day window.

If you see Code L on a 1099-R, the rollover option is gone for that amount. If you see Code M, you still have time. Verify the code with your plan administrator before filing, since a miscoded form can create IRS issues that take months to unwind.

Side-by-Side

What it is. Deemed distribution: a tax event with no actual payout. Loan offset: a real reduction of your account balance that cancels the loan.
When it happens. Deemed: default while still employed with no distributable event. Offset: default combined with a distributable event, typically job separation or plan termination.
Rollover eligible. Deemed: no, ever. Offset: yes, if you can supply the cash from personal funds.
Deadline to roll over. Deemed: not applicable. QPLO: tax filing due date including extensions. Non-QPLO offset: 60 days.
Effect on your account. Deemed: balance unchanged, loan stays on the books and reduces future borrowing capacity. Offset: balance permanently reduced by the loan amount.
Tax treatment of unrolled amount. Both are ordinary income, and both carry the 10% early withdrawal penalty if you’re under 59½.

The practical read: if you’re heading toward a job change or your plan is terminating with a loan outstanding, expect a loan offset and start lining up either payoff funds or rollover cash before the offset is issued. If you’ve already defaulted while still employed, the deemed distribution has already done its damage, and your work now is establishing basis on your return and, if the plan allows, continuing repayments to build after-tax basis that keeps the same dollars from being taxed twice down the road.

1
Internal Revenue Service. 401(k) Plan Fix-It Guide – Participant Loans Do Not Conform to the Requirements of the Plan Document and IRC Section 72(p)
2
Internal Revenue Service. Retirement Plans FAQs Regarding Loans
3
Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
4
Internal Revenue Service. 2025 Instructions for Forms 1099-R and 5498
5
Legal Information Institute. 26 USC 402(c)(3) – Definition: Qualified Plan Loan Offset Amount
6
Internal Revenue Service. Plan Loan Offsets
7
Federal Register. Rollover Rules for Qualified Plan Loan Offset Amounts