1099-R Code L: Taxed on a Loan You Still Owe

Updated August 14, 2026. Quick answer: a code L means your plan loan was treated as distributed to you. You are taxed on the outstanding balance even though no money moved. The part almost nobody is told: you still owe the loan. On a $18,000 balance at a 22% marginal rate and under 59½, the tax is $5,760 — 32.0% of the balance — and the $18,000 is still outstanding on top of it.

What the IRS tells the payer

“L—Loans treated as deemed distributions under section 72(p).”

IRS, Instructions for Forms 1099-R and 5498 (2026), Table 1

“Do not use code L to report a plan loan offset.”

IRS, Instructions for Forms 1099-R and 5498 (2026), Table 1, code L

That second sentence is the whole reason this page exists. There are two ways a plan loan ends up on a 1099-R and they are reported under different codes with very different consequences.

Why a loan becomes a distribution at all

The statute starts from the position that a plan loan is a distribution:

“If during any taxable year a participant or beneficiary receives (directly or indirectly) any amount as a loan from a qualified employer plan, such amount shall be treated as having been received by such individual as a distribution under such plan.”

26 U.S.C. § 72(p)(1)(A)

An ordinary plan loan escapes that only by meeting a set of conditions, and it has to keep meeting them:

“The agreement specifies that the loan must be repaid within 5 years, except for a principal residence. The loan must be repaid in substantially level installments (at least quarterly). The loan amount does not exceed the limits in section 72(p)(2)(A) (maximum limit is equal to the lesser of 50% of the vested account balance or $50,000).”

IRS, Instructions for Forms 1099-R and 5498 (2026), Loans Treated as Distributions

Miss the repayment schedule, and:

“If a loan fails to satisfy (1), (2), or (3), the balance of the loan is a deemed distribution.”

IRS, Instructions for Forms 1099-R and 5498 (2026), Loans Treated as Distributions

No default notice is required for the tax result to happen. The loan simply stops qualifying, and the balance becomes income.

L is not M, and the difference is a deadline

A code M reports the other route — and in the box the two behave identically: each may be paired with 1, 2, 4, 7 or B, and with nothing else (the full pairing chart). The difference is entirely in what happened, not in how it is coded:

“Use code M for a qualified plan loan offset (which is generally a type of plan loan offset due to severance from employment or termination of the plan).”

IRS, Instructions for Forms 1099-R and 5498 (2026), Table 1, code M

An offset happens when the plan cancels the loan against your account balance, usually because you left the employer. It is a real distribution of a real balance, and it can be rolled over — there is a window, and if you replace the money inside it there is no tax at all. The deadlines for an offset are here, and they are more generous than people expect.

A code L has no such escape:

“It is not eligible to be rolled over to an eligible retirement plan nor is it eligible for the 10-year tax option.”

IRS, Instructions for Forms 1099-R and 5498 (2026), Deemed distribution

Two codes, one form, and only one of them has a fix. If you are holding a 1099-R for a plan loan, the first thing to establish is which letter is on it.

You are taxed on it and you still owe it

This is the part that sounds wrong and is not. The regulation says the deemed distribution is a distribution for the tax rules and stops short of saying it is one for everything else:

“However, a loan that is deemed distributed under section 72(p) is not considered distributed for all purposes of the Internal Revenue Code.”

26 CFR § 1.72(p)-1, Q&A-19(a)

The plan’s claim on you is one of the things it is not distributed for. The clearest proof is that the regulation goes on to explain what happens when you carry on repaying a loan that has already been taxed:

“Yes, if the participant or beneficiary repays the loan after a deemed distribution of the loan under section 72(p), then, for purposes of section 72(e), the participant’s or beneficiary’s investment in the contract (tax basis) under the plan increases by the amount of the cash repayments that the participant or beneficiary makes on the loan after the deemed distribution.”

26 CFR § 1.72(p)-1, Q&A-21(a)

You cannot repay something that no longer exists. The regulation describes the repayments, and gives them a tax consequence — they build basis, so the same money is not taxed a second time on the way out. The loan is alive. It was simply taxed while it was alive.

What the double actually costs

Take a $18,000 outstanding balance, a 22% marginal rate, and an age under 59½:

$23,760 against $18,000 borrowed, which is 132.0% of it — and the tax falls due in a year when no money arrived, because the money arrived when you took the loan and has already been spent. That timing, rather than the rate, is what makes a code L hurt. If the loan is in a federal plan, the TSP has its own rules on separation and death.

It is box 7a now, not box 7

Every guide to this form, including the ones on this site written before today, calls it Box 7. For tax year 2026 that is the wrong box number:

“We renumbered box 7 and the ‘IRA/SEP/SIMPLE’ checkbox to boxes 7a and 7b and we added boxes 7c (Trump account) and 7d (Earnings on excess contributions).”

IRS, Instructions for Forms 1099-R and 5498 (2026), What’s New

The code itself is unchanged. What moved is the label: the distribution code is in box 7a and the IRA/SEP/SIMPLE tick is box 7b. If you are reading a 2025 form, it is box 7; if you are reading a 2026 form, it is box 7a; and the two boxes added alongside them are narrow — box 7d, for instance, only ever carries a Trump-account figure:

“Enter the total amount of earnings on the amount of excess contributions distributed from a Trump account that is entered in box 1.”

IRS, Instructions for Forms 1099-R and 5498 (2026), Box 7d

The more important point is the older one. The code records what the payer knew when it cut the cheque, and the instructions say as much: a payer is told to use code 1 — the one that means no exception — whenever it simply does not know.

“However, use code 1 even if the distribution is made for medical expenses, health insurance premiums, qualified higher education expenses, a first-time home purchase”

IRS, Instructions for Forms 1099-R and 5498 (2026), Table 1, code 1

So a code is a claim about the payer’s knowledge, not a ruling about your tax. Every code in one place: the code table. If yours is wrong: what to do about it.

What this page does not do

• It does not cover cure periods. Plans may allow a grace period before a missed payment becomes a deemed distribution, and the length of that period is a plan-document question this page cannot answer.
• It does not model the basis you build by repaying. The regulation is quoted; the arithmetic of tracking that basis is not reproduced.
• It does not read the whole of § 1.72(p)-1. Two Q&As are quoted; the rest, including the treatment of subsequent loans, is not.
• The figures are illustrative, chosen so the arithmetic can be checked rather than because they are yours.

Sources

Every figure on this page is computed from the text quoted below, as read at the issuing authority on 2026-08-14.

General consumer information, not tax, legal or financial advice. Every quotation above was read from the issuing authority’s own page on 2026-08-14 and forms and instructions change; your own facts decide the outcome, and anything consequential belongs with a preparer or the IRS rather than with a web page.