Excess Business Loss Limitation: IRC 461(l) Rules for Non-Corporate Taxpayers

By Yarik Yarosh, CPA ·September 5, 2026 ·6 min read

Written by Yarik Yarosh, CPA (US & Canada) September 5, 2026 · FL CPA license AC61704 · CPA Ontario

The excess business loss (EBL) limitation under IRC 461(l) is a rule that limits how much business losses a non-corporate taxpayer (individuals, trusts, estates) can deduct against non-business income in any single year. For 2024, the threshold is $305,000 for single filers and $610,000 for married filing jointly (indexed for inflation annually). Business losses exceeding these amounts can’t be deducted in the current year. Instead, they become part of the taxpayer’s net operating loss (NOL) carryforward, subject to the 80% of taxable income limitation in future years. This rule was introduced by the TCJA in 2018 and made permanent by the Inflation Reduction Act of 2022.

✓Key takeaway

Excess business loss limitation:

How it works:

Calculate total business income from all sources (Schedule C, K-1 from S-Corps and partnerships, rental income if active, farm income)
Calculate total business deductions from all sources
If total business deductions exceed total business income by more than the threshold ($305,000 single / $610,000 MFJ for 2024), the excess is an “excess business loss”
The excess business loss is NOT deductible in the current year
The excess becomes an NOL carryforward (added to any existing NOL)
The NOL can be used in future years, limited to 80% of taxable income

What counts as “business” income/loss:

Schedule C net profit or loss
S-Corp K-1 income or loss (if materially participating)
Partnership K-1 income or loss (if materially participating)
Active rental income or loss (if real estate professional or materially participating)
Farm income or loss
Section 1231 gains and losses
Deductions for depreciation, Section 179, bonus depreciation

What doesn’t count (non-business):

W-2 wages
Interest and dividends
Capital gains from investment securities
Passive income and losses
Retirement plan distributions

Who’s affected:

High-income business owners who make large equipment purchases (bonus depreciation creates large losses)
Farmers with significant equipment or land purchases
Real estate professionals with large depreciation from cost segregation
Business owners in loss years from startup or expansion
Anyone with business losses exceeding $305,000/$610,000

The ordering:

First: passive activity rules (IRC 469) apply to separate passive from active losses
Second: the excess business loss limitation (IRC 461(l)) caps the total business loss deduction
Third: the remaining loss (if any, after EBL limitation) becomes part of the NOL
Fourth: NOL rules apply in future years (80% of taxable income limitation)

How does the EBL limitation affect a business owner?

Hypothetical example

Round numbers. A married couple filing jointly. Spouse A has W-2 income of $200,000. Spouse B operates an S-Corp that purchased $900,000 in equipment (bonus depreciation) and had operating income of $150,000.

S-Corp result:

Operating income: $150,000
Bonus depreciation: ($900,000)
K-1 loss: ($750,000)

EBL calculation:

Total business income: $150,000 (operating income from S-Corp)
Total business deductions: $900,000 (depreciation)
Net business loss: ($750,000)
EBL threshold (MFJ 2024): $610,000
Excess business loss: $750,000 - $610,000 = $140,000
This $140,000 can’t be deducted in the current year
It becomes an NOL carryforward

What the couple CAN deduct in the current year:

Allowable business loss: $610,000
W-2 income: $200,000
Combined income: $200,000 - $610,000 = ($410,000)
Standard deduction: ($29,200)
Taxable income: ($439,200)
Tax: $0 (refund of all W-2 withholding)

Step 1: Net business loss = $750,000 Step 2: EBL = $750,000 - $610,000 = $140,000 (can’t deduct) Step 3: Allowable business loss = $610,000 Step 4: AGI = W-2 ($200,000) - allowable business loss ($610,000) = ($410,000) Step 5: The $140,000 EBL becomes an NOL carryforward to next year Step 6: The ($410,000) AGI, after the standard deduction, creates a current-year NOL of approximately $381,000, also carried forward

Total carryforward: $140,000 (EBL) + $381,000 (current-year NOL) = $521,000

Year 2 (normal operations, no big equipment purchase):

S-Corp K-1 income: $150,000
W-2 income: $200,000
Total income: $350,000
NOL applied (80% of taxable income): $350,000 - $29,200 standard deduction = $320,800 taxable. 80% = $256,640.
NOL used: $256,640
Remaining taxable: $320,800 - $256,640 = $64,160
Tax: approximately $7,200
Remaining NOL carryforward: $521,000 - $256,640 = $264,360

Without the EBL limitation (if the full $750,000 were deductible):

Year 1 would have an AGI of ($550,000), creating a larger NOL
But the NOL rules (80% limitation) apply in future years regardless
The EBL primarily affects TIMING, not total deductions. The $140,000 excess is not lost; it’s just deferred.

The practical impact: the couple has to wait to use $140,000 of deductions. The time value of the deferred tax savings is the real cost, approximately $3,000-$5,000 per year of delay (at 33% rate on $140,000 = $46,200 in deferred tax, invested at 7-10% per year).

Illustrative numbers only, not a real client and not advice for your facts.

In what order do loss limitation rules apply?

Business losses must clear four successive hurdles before they can offset other income. First, the basis limitation: you can only deduct losses up to your tax basis in the business (for S-Corps, this includes stock basis and shareholder loan basis). Second, the at-risk rules (IRC 465): losses are limited to amounts you have at risk, which generally means cash invested plus recourse debt you’re personally liable for. Third, the passive activity rules (IRC 469): if you don’t materially participate, losses are passive and can only offset passive income. Fourth, the excess business loss limitation (IRC 461(l)): even if a loss clears the first three hurdles, the deduction is capped at $305,000 ($610,000 for joint filers in 2024), with the excess converted to a net operating loss carryforward.

Related guides:

Excess Business Loss Limitation: How IRC 461(l) Caps Your Business Loss Deduction

How do net operating loss carryforward rules work for small businesses?

Net operating losses arising in tax years after 2017 can be carried forward indefinitely but are limited to offsetting 80% of taxable income in any future year under IRC 172(a). The 80% limitation means a business with a large NOL carryforward will always pay some tax in profitable years, unlike pre-TCJA rules that allowed 100% offset. NOLs can no longer be carried back to prior years for most businesses (the CARES Act temporarily allowed 5-year carrybacks for 2018-2020 losses, but that provision has expired). Farming businesses retain a 2-year carryback option, and property and casualty insurance companies retain a 2-year carryback with no 80% limitation, which are the only remaining exceptions to the forward-only rule.

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Cite this page

Yarik Yarosh, CPA. "Excess Business Loss Limitation: IRC 461(l) Rules for Non-Corporate Taxpayers." Blue Cloud CPA, September 5, 2026. https://bluecloudcpa.com/guides/small-business-excess-business-loss-limitation-irc-461l

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.