Excess Business Loss §461(l) Calculator 2026
Calculate the 2026 excess business loss disallowance under IRC §461(l) — the limit is $313,000 (single) or $626,000 (married filing jointly) of net business losses against non-business income. Excess becomes a net operating loss (NOL) carried forward. Made permanent by the One Big Beautiful Bill Act (OBBB). Free Form 461 helper — runs in your browser.
The 2026 §461(l) Limits
Under IRC §461(l), individual taxpayers can offset only a limited amount of business losses against non-business income (wages, portfolio income, etc). For 2026, the limit is $313,000 for single filers and $626,000 for married filing jointly — both inflation-adjusted annually from the 2018 baseline. Losses above the limit are not lost — they convert to a Net Operating Loss (NOL) carried forward indefinitely, subject to the 80%-of-taxable-income annual limit under §172(a)(2). The One Big Beautiful Bill Act (OBBB, P.L. 119-21, July 4, 2025) made §461(l) permanent (previously scheduled to expire after 2028). Source: IRS Form 461 (Limitation on Business Losses).
What Counts as Business Income and Loss
Business activities include sole proprietorships (Schedule C), rental real estate where you materially participate or are a real estate professional, S-corp and partnership pass-through income (K-1), and farm income (Schedule F). Wages from your W-2 job ARE counted as business income under §461(l) for the netting calculation, even though they cannot generate a loss themselves. Capital gains, dividends, interest, and IRA distributions are non-business income and are not netted against business losses for §461(l) purposes. Passive activity losses already disallowed under §469 do NOT enter the §461(l) calculation — they remain suspended at the §469 level. Source: IRS Form 461 Instructions.
Order of Loss Limitation Rules
Business losses pass through four sequential limitations: (1) Basis limitation — losses cannot exceed your tax basis in the entity, (2) At-risk rules under §465 — losses cannot exceed amounts at economic risk, (3) Passive activity loss rules under §469 — passive losses limited to passive income, and (4) Excess business loss under §461(l) — remaining losses limited to $313K/$626K. Each rule can suspend losses for future years. Always run §461(l) last, after all prior limitations apply. For real estate investors, qualifying as a real estate professional under §469(c)(7) bypasses the §469 step but does not bypass §461(l). Source: IRS Publication 925, Passive Activity and At-Risk Rules.
Strategic Planning Around §461(l)
If your business is on track to generate a loss above the §461(l) limit, consider deferring deductions to a later year when income may offset them, accelerating recognition of business income to absorb the loss, or making §266 election to capitalize property taxes and carrying costs instead of currently deducting. For S-corp owners taking a loss, recharacterize loans-to-shareholder as equity if it would relax basis limits before §461(l) bites. The NOL carryforward is valuable but loses time value — a $200,000 disallowed loss carried forward 5 years before use is worth ~15% less in present value at a 3% discount rate. See our QBI 199A Deduction Calculator for related pass-through optimization. Last updated May 2026.
Frequently Asked Questions
What is IRC §461(l)?
IRC §461(l) limits the amount of business losses an individual taxpayer can use to offset non-business income to $313,000 (single) or $626,000 (married filing jointly) for 2026, both inflation-adjusted. Losses above the limit are not lost — they convert to a Net Operating Loss (NOL) carried forward. The provision was introduced by the Tax Cuts and Jobs Act of 2017 and made permanent by the One Big Beautiful Bill Act in 2025.
Are W-2 wages business income for §461(l)?
Yes — under §461(l)(6), wages are treated as business income for the netting calculation. This means W-2 wages can absorb business losses up to your aggregate wage amount before the §461(l) limit even applies. For a married couple with $300,000 in W-2 wages and $800,000 of business losses, the wages absorb $300,000 of losses first, leaving $500,000 of net loss subject to the $626,000 MFJ limit.
Does §461(l) apply to passive losses already suspended under §469?
No. §469 (passive activity loss) operates BEFORE §461(l). Suspended passive losses remain at the §469 level and only enter the §461(l) computation when freed by passive income, a disposition of the activity, or another §469 triggering event. The order of limitations is: basis → at-risk (§465) → passive (§469) → §461(l).
How does the NOL carryforward work after §461(l) disallowance?
Disallowed business losses become an NOL in the year after disallowance. The NOL is carried forward indefinitely under §172(a)(2)(A) and can offset up to 80% of taxable income in any future year (the 80% rule, also enacted by TCJA). No carryback is allowed for post-2020 NOLs (except for certain farm and insurance losses). Track NOL utilization on Form 1045 or Schedule A of Form 1040 attachment.
Did the One Big Beautiful Bill Act change §461(l)?
Yes — OBBB (P.L. 119-21, signed July 4, 2025) made §461(l) permanent. Under prior law, §461(l) was scheduled to sunset after December 31, 2028. The OBBB removed the sunset date. The dollar limits remain inflation-adjusted under §461(l)(3)(B). Source: IRS pages on the OBBB and P.L. 119-21.
Does §461(l) apply to S-corp shareholders and partners?
Yes — §461(l) is applied at the shareholder/partner level, not the entity level. K-1 losses from S-corps and partnerships flow through to your 1040 and are aggregated with your other business losses for the §461(l) computation. Entity-level basis, at-risk, and passive limitations still apply first at the partner/shareholder level under §704(d), §465, and §469 respectively.
How do real estate professionals interact with §461(l)?
A real estate professional under §469(c)(7) (750+ hours and more than half of personal services in real estate, plus material participation in each property) treats rental losses as non-passive, bypassing §469. But these now-active losses ARE subject to §461(l). High-income real estate investors using cost segregation to generate large depreciation losses can still hit the §461(l) cap, especially in the first year after a property acquisition.