Do Excess Business Losses Carry Forward? + FAQs

Yes – if your business losses exceed the IRS threshold, the excess portion is carried forward as an NOL carryforward for future use.

According to a 2024 survey by a leading tax organization, nearly 40% of small business owners admit to misunderstanding how loss carryforwards work under current tax rules. In this article, you’ll learn:

💼 How Excess Business Loss (EBL) is defined by federal law and what the deductible limit is
🔄 When and how disallowed losses carry forward into future tax years under IRS rules
🏛️ The difference between federal and state tax treatment of loss carryforwards
🚫 Common mistakes to avoid so you don’t lose money on unclaimed losses
📊 Real-world examples showing exactly how these carryforwards play out

Federal Rules: Carrying Forward Excess Business Losses

Under federal law, any excess business loss that you can’t deduct in the current year does carry forward into future tax years. The Tax Cuts and Jobs Act (TCJA) of 2017 added Section 461(l) to the tax code, defining an excess business loss as the amount by which all your trade-or-business deductions exceed your trade-or-business income plus a fixed threshold. For example, for tax year 2021 that threshold was $262,000 for a single filer and $524,000 for married filing jointly (and it is adjusted for inflation each year).

Importantly, the threshold applies to total business income and losses combined. You cannot apply it separately to each business; all your business schedules (Schedule C, E, F, etc.) are combined on IRS Form 461. Also note that only active business income counts in this calculation – your W-2 wages or investment income are not included. Only your trade-or-business profits and losses enter the calculation.

In practical terms, here is how it works step-by-step:

Combine all business activity. List all your business income and deductions. Compute the net business loss (if any) by offsetting income with expenses.
Subtract the IRS limit. From that net loss, subtract the statutory threshold (for example, about $289,000 for a single filer in 2023). Any remaining loss is the excess business loss. For instance, if you have $350,000 of losses and $50,000 of business income (a net $300,000 loss), subtract $289,000 to find an $11,000 excess.
Carry it forward. The excess amount (in this example, $11,000) is disallowed in the current year and carried forward as a net operating loss (NOL). You report it on next year’s tax return as an NOL carryover. In future years, that carryforward can offset up to 80% of taxable income.

Keep these points in mind: you must apply other limits first. Any losses limited by the at-risk rules (IRC Sec. 465) or passive-activity rules (Sec. 469) are reduced before applying the EBL threshold. Only after those are applied do you calculate any excess. Also, under current law most NOLs (including any EBL carryforwards) cannot be carried back; they carry forward only. (The CARES Act temporarily allowed carrybacks for 2018–2020 losses, but that has since expired for EBL.)

The threshold is inflation-adjusted each year. The IRS publishes updated limits in annual guidance. For example, it was about $270,000 (single) in 2022, $289,000 in 2023, and $305,000 in 2024. In formula terms, you can think of the excess business loss as max(0, (Total Business Deductions – Total Business Income – Threshold)). If this calculation yields a positive number, that is your excess loss.

For clarity, consider a detailed example: suppose you have $500,000 of business deductions and $100,000 of business income, for a net $400,000 loss. If the threshold is $289,000, then $400,000 – $289,000 = $111,000. That $111,000 is your excess business loss. You disallow $111K now and list $111K as an NOL carryforward. The remaining $289K of the loss (up to the threshold) is used in the current year.

In summary, yes, federal tax law allows you to carry forward excess business losses. The IRS explicitly treats the disallowed excess as an NOL carryover to the next year. Be sure to file Form 461 and keep track of the carryforward amount. Remember that married couples filing jointly get double the single threshold, and that the limit increases yearly. If your loss exceeds the limit, you don’t lose it – you simply defer it to future years under the NOL rules.

Who Is Affected and Why

Not all businesses will hit the excess-loss limit. The threshold is extremely high (hundreds of thousands of dollars), so most modest businesses will never reach it. It mainly affects very large operations. Most small businesses or sole proprietors won’t come close to these limits. For example, a single filer had a $300K business loss and no other business income in 2023, and the $289,000 threshold means $11,000 is excess.

In practical terms, only owners facing multi-hundred-thousand-dollar losses typically see this rule. Many small ventures with losses well below the threshold won’t trigger it. Suppose a person has $100K of losses – that is well under the limit and fully deductible. In contrast, someone with a $400K loss (perhaps due to heavy equipment depreciation or startup costs) would likely have an excess to defer.

Because married couples file jointly, their threshold is doubled (about $578K in 2023). This means EBL kicks in only at very high loss levels for them. The policy behind the rule was to prevent enormous losses from immediately wiping out other income. In other words, it ensures a taxpayer cannot instantly use all of a huge business loss to erase unrelated wages or investment income – the excess benefit is spread into future years. Critics point out it can burden startups and property investors with big upfront losses, while supporters say it curbs abusive loss deductions.

In practice, if your loss stays below the limit, you won’t notice this rule at all. But if you have multiyear or very large losses, it’s important to plan around it. For instance, a taxpayer might time a major expense or income recognition to avoid crossing the threshold by too much. The key takeaway is that any excess is not lost — it’s deferred. Even if you have no income in later years, the loss sits in your NOL pool until some profit absorbs it (up to 80% of that profit each year).

State Differences: Conformity and Carryforwards

State tax rules do not always follow federal changes, so excess-loss carryforwards can differ by state. Some states use rolling conformity (automatically adopting federal law as amended) and thus follow changes like the CARES Act’s suspension of the EBL limit. Others use static conformity (adopting the Code as of a certain date) or explicitly decouple, creating their own treatment. For example, Colorado’s tax code automatically follows federal updates, so after CARES it retroactively allowed taxpayers to amend and claim refunds for 2018–2019. A state that did not update after TCJA might still require EBL calculations based on older law.

In practical terms, this means your loss carryforward might look different on your state return. Some states never adopted the federal EBL cap at all. California, for instance, has no EBL limit, so California taxpayers often deduct larger losses on their state return (subject to California’s own NOL rules). New York generally follows federal tax law as it evolves, so it also limited excess losses after TCJA took effect. Other states may not have updated their rules, leaving taxpayers to apply older limits or consult complex guidance. For a multi-state business, one state might allow a full deduction while another disallows the excess.

Some states also have their own net operating loss provisions. For example, California disallows an unlimited NOL carryover and limits most NOLs to 80% of income for 2022 and later. Illinois and other states have enacted their own NOL caps. Thus a taxpayer could see a bigger loss carryforward on the federal return than on a state return, or vice versa. If your business operates in multiple states, each jurisdiction could treat the carryforward differently. Always check your state’s rules for NOL and loss carryforwards to avoid surprises.

Bottom line: federal law ensures excess business losses carry forward as NOLs, but state laws vary. Some states simply allow the full loss as a carryforward; others impose additional limits or add back disallowed amounts. For any given year, your state taxable income might be higher or lower than federal depending on its conformity. In practice, always adjust for your state’s conformity date and any NOL rules when handling carryforwards on your state return.

Common Pitfalls: Mistakes to Avoid

📝 Not filing the right forms. If your business losses exceed the limit, you must report it on IRS Form 461. Failing to attach or properly complete Form 461 can cause you to forfeit your carryforward. Always include this form if your combined business losses might exceed the threshold that year.
🔄 Mixing up EBL vs. regular loss. Only the excess portion of your loss is carried forward as an NOL. If your total loss is below the threshold, no excess applies at all. Some taxpayers mistakenly treat their entire loss as an NOL or ignore the threshold. Always remember: you only defer the amount above the limit.
📉 Ignoring other limits. Apply the at-risk (Sec. 465) and passive-activity (Sec. 469) loss rules first. If a loss is already limited by those rules, it changes your EBL outcome. Overlooking them can either inflate your excess or omit allowed losses. Always apply at-risk and passive-loss limits before computing any EBL.
💰 Overlooking the 80% cap. An NOL (including one from an EBL) can offset only up to 80% of income in a carryforward year. Don’t assume it will wipe out all income. Plan your future taxable income knowing the loss can only reduce 80% of it.
🏛️ Neglecting state rules. State tax law may not mirror the federal rule. Some states allow full loss deductions or have their own limits. Always verify your state’s treatment of loss carryforwards to avoid surprises. In practice, many accountants recommend a state-specific review whenever large losses are involved.
🚫 Overlooking business classification. If an activity isn’t truly a “trade or business,” you cannot use those losses for EBL. For example, hobby losses are never deductible, and personal casualty losses follow separate rules. Make sure only bona fide business deductions go on Form 461.
📅 Mixing tax years. The EBL threshold and rules apply to the tax year of the loss. You cannot retroactively apply a threshold from another year. Always use the threshold in effect for the year you incurred the loss, then carry it forward accordingly.

Carryforward Scenarios: Practical Examples

Below are a few scenarios illustrating how carryforwards work:

Scenario	Outcome
Single filer, $300K business loss (2023): A sole proprietor reports $300,000 of business loss and no other business income in 2023. The 2023 EBL threshold (single filer) is $289,000, so $11,000 is excess. That $11,000 is disallowed and carried forward.	The taxpayer adds $11,000 to next year’s NOL carryforward. In a future year, that $11K can offset taxable income (up to 80% of it) under the NOL rules.
Married couple, $600K loss (2023): A married couple (joint return) has $600,000 of combined business loss. The 2023 threshold for joint filers is $578,000, so $22,000 is excess. That $22,000 is not deducted in 2023 and becomes an NOL carryforward.	The couple adds $22,000 to their NOL carryforward. In later years, they can use that $22K to reduce taxable income (subject to the 80% limit).
Loss below threshold (2024): A single taxpayer has a $200,000 business loss in 2024 and no other business income. The 2024 threshold is about $305,000, so $0 is excess. All $200,000 is deductible in 2024 (subject to passive/at-risk rules).	No excess loss exists, so nothing carries forward. The taxpayer deducts the full $200K in 2024 as allowed.

These examples show only the portion of the loss beyond the threshold is deferred. If your total loss is under the limit, you use it immediately.

For example, imagine a single taxpayer with $120,000 in wages and $400,000 in business loss in 2023. Their net business loss is $400K, and the $289K threshold leaves $111K as excess. They can use $289K of loss to offset income (wiping out the $120K wages), but the remaining $111K is deferred. That $111K then appears as an NOL carryforward on their 2024 return and will offset future income (subject to 80% of income) in years ahead.

Comparing Tax Rules: EBL vs Other Loss Limits

Excess business losses tie into the net operating loss (NOL) framework but have their own twist. An EBL is not an additional deduction – it’s simply the portion of your business loss that exceeds the threshold. Before TCJA, many losses could offset any other income (subject to passive/at-risk limits). Now, EBL and all NOLs are carried forward with an 80% cap on offset. Essentially, any deferred loss (including an EBL) becomes a standard NOL under the tax code.

Other deductions operate separately. For example, the qualified-business-income (QBI) deduction (Sec. 199A) is calculated after taxable income, so it does not reduce your EBL calculation. A large QBI deduction won’t help you avoid an EBL – it simply lowers tax after you compute income. Similarly, capital losses follow their own rules (generally up to $3,000/year against ordinary income) and are not part of the EBL test. Passive-activity losses (e.g. from rental properties) have their usual limits first; any remaining active loss then enters the EBL calculation.

For example, imagine you have $100K of rental losses (passive) and $200K of active business losses. First, you apply the passive-loss rules (which might limit some of the rental loss). Then the remaining active business loss (or the combination) is measured against the EBL threshold. This shows that different limits layer on top of each other. Changes in tax law can affect how these interact. For instance, TCJA added both the EBL limit and the QBI deduction, meaning you apply EBL to your pre-tax income, and then compute QBI on the remainder.

Before 2018, net operating losses could often be carried back to prior years for a refund. Under the current rules (post-2017), including for EBL, losses can only be carried forward (carrybacks are generally disallowed). This delay means more tax is paid upfront. For example, a large startup loss might have generated a refund under old law, but now it only reduces future taxes. One more distinction: the EBL rule applies only to non-corporate taxpayers. C corporations are not subject to Section 461(l). They simply use the corporate NOL rules (80% limit, no separate loss threshold). S corporations and partnerships pass losses to owners, and each owner applies the EBL limit on their personal return with their share of the loss.

Planning Tips for Loss Carryforwards

Because excess business losses can affect taxes over multiple years, proactive planning can help. Here are some tips:

Monitor losses vs. threshold. Keep track of your business profit or loss as year-end approaches. If you’re near the limit, consider whether you can delay or accelerate deductions or income. For example, postponing a large purchase or recognizing additional revenue might keep your loss under the cap for that year.
Track carryforwards carefully. Each year’s excess loss becomes an NOL carryforward. Use a spreadsheet or the IRS NOL worksheet to record how much loss remains. This ensures you apply it properly in future years.
Time your income. Use large carryforwards in high-income years, because an NOL can offset up to 80% of income. In a low-income year, the loss just continues to roll forward.
Coordinate deductions. Beware of triggering EBL with big deductions. For example, 100% bonus depreciation on equipment can create huge losses. If an EBL would result, you might opt for slower depreciation or Section 179 expensing instead.
Consider filing status. Married filing jointly provides a double threshold. Filing separately gives each spouse only the single limit. If one spouse has large losses and the other does not, filing jointly could allow a bigger immediate deduction.
Coordinate with K-1 reporting. If you’re a partner or S-corp shareholder, your excess loss is based on your share of the loss reported on your K-1. Verify that the partnership or S-corp reported losses correctly on your Schedule E. You must include your share of loss on Form 461 to determine your EBL.
Know your entity structure. If you operate through a partnership, LLC, or S-corp, the EBL limit applies to you individually. The entity itself doesn’t file Form 461; instead, use the loss from your Schedule K-1 on your personal return’s Form 461. Don’t overlook combining all K-1 losses on your Form 461 calculation.
Keep an eye on deadlines. Because EBL carryforwards depend on current-year losses, file your returns on time or with an extension if needed. If you miss a deadline, you could lose the opportunity to claim an EBL carryforward properly.
Estimate future usage. Model out how your carryforward will apply. For instance, if you carry $100K forward and expect $80K profit next year, remember you can only use $64K (80% of $80K), leaving $36K still carried. Planning for multi-year usage avoids surprises.
Review law changes annually. Tax laws evolve. For example, Congress extended the EBL limit through 2028. Keep updated: if the threshold or rules change, revisit your carryforward strategy and calculations.
Consult a professional. The rules can be complex. An accountant can run scenarios and suggest strategies (like timing or structuring) to optimize how losses are used. Proper planning doesn’t remove the EBL, but it ensures you don’t leave deductions on the table in any year.

Glossary: Key Tax Terms

Excess Business Loss (EBL): The portion of a business loss above the IRS threshold. Only the excess portion is deferred and carried forward.
Net Operating Loss (NOL): A loss carryforward (post-2017) that offsets up to 80% of future income. Any disallowed EBL becomes part of your NOL carryforward.
At-Risk Rules (Sec. 465): Limits losses to the amount the taxpayer has at risk in the business. Apply these rules before determining EBL.
Passive Activity Loss Rules (Sec. 469): Limits losses from activities where you do not materially participate (such as rental real estate). Apply these before calculating EBL.
Form 461: The IRS form individuals use to calculate excess business loss. It totals income/loss from all businesses and compares it to the threshold.
TCJA (Tax Cuts and Jobs Act, 2017): The law that introduced the EBL limit (Sec. 461(l)). It created the initial thresholds and rules starting in 2018.
CARES Act (2020): Suspended the EBL limit for tax years 2018–2020. In those years, taxpayers effectively faced no EBL cap.
Inflation Reduction Act (2022): Extended the EBL provisions through 2028. It did not change the rules themselves, only the expiration date.
Carryforward vs. Carryback: Carryforward means applying a loss to future-year income; carryback means applying it to prior-year income. Under current law, EBL carryforwards are carried forward only (carrybacks are disallowed).
Hobby vs. Business: Losses from a personal hobby are not deductible and do not count. Only losses from a bona fide trade or business count toward EBL and NOL calculations.
Net business loss: The result of subtracting total business income from total business deductions. This combined loss is tested against the EBL threshold. If it is negative and its absolute value exceeds the threshold, the difference is the excess business loss.

Pros	Cons
Ensures business losses retain value: any excess loss will eventually offset future income.	Limits current deductions: businesses with large losses cannot deduct the excess immediately, which can hurt cash flow.
Prevents abusive tax planning: pass-through owners cannot instantly use unlimited losses to wipe out other income.	Added complexity: calculating EBL requires IRS Form 461 and careful tracking of losses and thresholds.
Integrated into existing NOL system: excess losses feed into the general NOL carryforward mechanism.	Carryforward is restricted: an NOL (including an EBL) can only offset up to 80% of income each year, delaying some tax benefit.

FAQs

Q: Can I carry forward my excess business loss?
A: Yes. Any disallowed excess loss is treated as a net operating loss carryforward, so you can use it against future taxable income (subject to the 80% income limit).
Q: Did the CARES Act eliminate the excess business loss limit permanently?
A: No. The CARES Act only suspended the limit for 2018–2020. After 2020 the limit returned, and under current law it continues through 2028.
Q: Are C corporations subject to the excess business loss limit?
A: No. The EBL limit applies only to non-corporate taxpayers (individuals, partnerships, S corps). C corporations use the standard NOL rules and are not affected by Section 461(l).
Q: Do state tax rules always follow the federal excess loss carryforward?
A: No. States vary widely. Some automatically adopt federal changes, while others do not or have their own rules. Always check your state’s law for loss carryforwards.
Q: Is an excess business loss the same as a regular net operating loss?
A: No. An excess business loss is just the portion of a business loss above the threshold; it becomes part of your NOL. After that, it follows the standard NOL rules (up to 80% of income).
Q: Can a real estate professional avoid the excess loss limit?
A: No. Real estate professional status affects passive-loss rules but does not exempt you from the EBL threshold. Excess losses still carry forward normally.
Q: Do capital losses count toward the excess business loss threshold?
A: No. Capital losses follow their own rules (up to $3,000 per year against ordinary income) and are not included in the EBL calculation.
Q: Is the excess business loss threshold adjusted for inflation?
A: Yes. The IRS updates the threshold each year. For example, it was $270K/$540K in 2022, $289K/$578K in 2023, and $305K/$610K in 2024 (single/joint filers).
Q: Is the excess loss limitation permanent?
A: No. It was originally set to expire after 2025, but Congress extended it through 2028. Any further extension would require new legislation.
Q: Are trust or estate business losses subject to the excess-loss rule?
A: Yes. Trusts and estates are non-corporate taxpayers. If a trust has excess business losses, it applies the same rules (Form 461 and NOL carryforward) as an individual.
Q: Does filing status affect the EBL threshold?
A: Yes. Married couples filing jointly share a higher threshold. If you file married filing separately, each spouse generally uses the single-filer threshold for their losses.
Q: How do partnerships and S corporations handle excess losses?
A: The entity itself doesn’t apply the EBL limit. Instead, each partner or shareholder takes their share of the business loss on a K-1 and applies the limit on their own return. Any excess in their share becomes their personal NOL carryforward.
Q: Will the excess business loss rules end after 2028?
A: The current rule is set to expire after 2028. If Congress does nothing, post-2028 losses wouldn’t be limited by EBL. Any carryforwards from before 2029 would revert to standard NOL treatment after the sunset.
Q: If a loss is limited by multiple rules, how is it reported?
A: You apply at-risk and passive-activity limits first. The remaining loss (if any) is then compared to the EBL threshold. Your Form 461 will reflect the final excess after all those prior limits.
Q: What if my business loss exactly equals the threshold?
A: If your net loss equals the threshold, then there is no excess (0). You can deduct the full loss (subject to any other rules) in that year, and nothing carries forward under EBL.
Q: How do I apply EBL if I have multiple businesses?
A: You combine all your businesses’ income and losses on Form 461. In other words, EBL treats them as one combined business. Only the total net loss is compared to the threshold.