Under U.S. tax law, there’s no fixed cap on the amount of losses you can carry forward – you can carry forward unlimited losses, indefinitely in many cases, without automatically triggering a tax audit. That said, the IRS limits how much of those losses you can deduct each year, and unusually large or improper loss deductions can still raise red flags if you’re not careful.
Carrying over tax losses can save you huge amounts in future taxes, but you need to know the rules. Below we break down everything you need to know about tax loss carryforwards, including all the different types of losses and their limits, how they work for individuals and businesses, how federal rules differ from state rules, and how to avoid common mistakes that might invite an IRS audit.
- 📖 Key loss types defined: Learn what capital losses, net operating losses (NOLs), passive activity losses, excess business losses, and other carryforward losses are – and why they exist.
- 📊 Carryforward rules unlocked: Understand how long you can carry losses (often indefinitely) and the yearly limits on using them (like the 80% NOL rule or the $3,000 capital loss cap).
- 🏢 Different taxpayers, different rules: See how individuals, small businesses, C corporations, and pass-through entities (like S corps and partnerships) each handle loss carryovers under IRS regulations.
- 🌎 Federal vs. state nuances: Find out how state tax laws may limit or modify loss carryforwards – some states aren’t as generous as the IRS, and rules can vary widely.
- 🚩 Audit-proof your losses: Discover common mistakes that trigger IRS audits (like misusing passive losses or failing to document NOLs) and learn how to avoid red flags when carrying losses forward.
Tax Loss Carryforward 101: Definitions & Key Concepts
Tax loss carryforward means if you can’t use a loss fully on your current year’s tax return, you carry the unused amount forward to future years to deduct against income. Think of it as saving your tax write-offs for later instead of losing them. This concept applies to certain kinds of losses (not personal expenses) that the tax code allows you to roll over into later tax years.
In contrast, a carryback lets you apply a loss to a prior year’s return (sometimes generating a refund). However, under current law, carrybacks are mostly disallowed for individuals and businesses (with a few exceptions), so carrying losses forward is the primary way to get tax value from excess losses.
Why does the IRS let you carry losses forward at all? It’s a matter of fairness and economic policy. Taxable income can fluctuate year to year, especially for businesses and investors. Carryforward provisions ensure that if you have a bad year (big losses) followed by a good year (big profits), you don’t overpay taxes overall.
Loss carryforwards prevent the tax system from penalizing you just because your income swings between years. They allow the tax benefit of a loss to be realized when you do have profits to offset.
Not all losses are treated the same. U.S. tax law has distinct rules for different types of losses, including capital losses (from investments), net operating losses (NOLs) from businesses, passive activity losses (from activities like rentals or partnerships in which you don’t materially participate), and excess business losses for non-corporate taxpayers. Each category has its own limitations on how much loss you can claim each year and how the carryforward works. The table below provides a quick overview of major loss types and their carryforward rules:
| Loss Type | Carryforward Treatment |
|---|---|
| Capital Loss (Individuals) | Deduct up to $3,000 of net capital loss against ordinary income per year; excess losses carry forward indefinitely until used in future years. |
| Capital Loss (C Corporations) | No deduction against ordinary income. Net capital losses can be carried back 3 years and forward 5 years to offset capital gains (unused losses expire after 5 years). |
| Net Operating Loss (NOL) | Can be carried forward indefinitely (no year limit). Each year, NOL use is limited to 80% of taxable income (per current law). Carrybacks generally not allowed (except certain farm or casualty losses). |
| Passive Activity Loss | Suspended passive losses carry forward with no time limit. They become deductible in any future year when you have passive income or when you sell the activity (triggering full use of remaining losses). |
| Excess Business Loss (EBL) | Business losses beyond the annual threshold (e.g. ~$289,000 single / $578,000 joint for 2023) are disallowed currently and carried forward as an NOL to the next year. |
The Federal Playbook: How to Carry Forward Every Type of Tax Loss
Capital Losses – The $3,000 Rule and Unlimited Carryovers
Capital losses occur when you sell investments like stocks or property for less than what you paid (a loss). The tax code distinguishes these from other losses. For individual taxpayers, capital losses can be used to offset your capital gains in full. If you have more losses than gains in a year (a net capital loss), you can deduct up to $3,000 of that net loss against your other income (like wages or interest). This “$3,000 rule” is a per-year cap for individuals ($1,500 if married filing separately).
Any net capital losses beyond $3,000 aren’t lost – they carry forward indefinitely. You’ll use the carried loss in the next year (and beyond) to firstly offset any capital gains, then take up to the $3,000 against ordinary income each year. There’s no expiration for individual capital loss carryovers: you can keep carrying them forward until they’re all used up (or until you die, at which point any unused losses vanish, as they can’t be inherited). Notably, you don’t get to choose not to take the $3,000 deduction in a year – the IRS requires you use as much of the loss as allowed each year.
For example, if you have a $10,000 net capital loss in Year 1 and no gains, you’d deduct $3,000 on that year’s tax return, and carry $7,000 forward. In Year 2, suppose you have a $2,000 capital gain and still carry that $7,000 loss. The loss first wipes out the $2,000 gain completely, and now $5,000 of loss remains; you can deduct $3,000 of that against your other income in Year 2 (meeting the annual limit), leaving $2,000 to carry into Year 3.
C corporations have a different set of rules for capital losses. A corporation cannot deduct net capital losses against ordinary income at all. Instead, a corporate capital loss can only offset capital gains. If a C corporation has a net capital loss in a year, it can carry that loss back 3 years and/or forward up to 5 years, applying it against capital gains in those years. Any corporate capital loss unused after 5 forward years expires permanently.
Also, capital losses do not generate or add to a corporation’s NOL – they’re a separate category. In short, individuals get a small annual deduction for excess investment losses (with unlimited carryforward), whereas corporations must use capital losses within a limited window and only against capital gains.
Net Operating Losses (NOLs) – Carry Forward Unlimited Business Losses (80% Rule)
A net operating loss (NOL) typically arises when a business’s tax-deductible expenses exceed its income for the year, resulting in a negative taxable income. Both individuals (from business activities) and corporations can generate NOLs. For instance, if your small business or rental property had a huge loss that more than offset your other income, you might have an NOL on your personal return.
Under current federal law, NOLs can be carried forward without any fixed year limit – essentially indefinitely – until the loss is used up. However, there’s a key limitation: in any year you use an NOL carryforward, you can only use it to offset up to 80% of that year’s taxable income. This 80% rule (enacted by the 2017 Tax Cuts and Jobs Act) means you can’t completely wipe out your tax bill if you have income; you’ll always pay tax on at least 20% of your taxable income in a carryforward year.
Put simply, you can carry forward unlimited dollars of NOL, but you may need multiple years to fully utilize a very large loss. Example: Your business incurs a $100,000 NOL in Year 1. In Year 2, you have $50,000 of taxable income. You may deduct up to $40,000 of the NOL against that income (80% of $50k), leaving $10,000 of taxable income for Year 2. The remaining $60,000 of the NOL carries into Year 3. If Year 3’s income is $80,000, you could use up to $64,000 of NOL (80% of $80k); since only $60,000 remained, you deduct it all and end up with $20,000 taxable in Year 3. At that point, your NOL is fully utilized. If your NOL were larger, you’d continue carrying it forward further.
Before 2018, tax law allowed NOLs to be carried back 2 years for a refund and forward 20 years (and NOLs could offset 100% of income). Now, for NOLs arising in tax years 2018 and beyond, carrybacks are generally disallowed and the carryforward is indefinite (with the 80% income limitation per year). One special exception: farming NOLs can still be carried back 2 years if the farmer elects. Also, during the COVID-19 pandemic, Congress temporarily suspended the 80% rule and permitted five-year carrybacks for NOLs from 2018-2020 (via the CARES Act), but those temporary provisions have expired. As of today, the standard rule is no carryback, unlimited carryforward, 80%-of-income cap each year.
For individuals, only losses from trade or business activities (or casualty losses in certain cases) contribute to an NOL – personal expenses or capital losses beyond the $3k limit don’t create an NOL. On your tax return, an NOL carryforward is claimed as a deduction (often entered on Schedule 1 of Form 1040 as an “NOL deduction”). The IRS provides worksheets (see IRS Publication 536) to compute your NOL and track carryforwards.
It’s crucial to keep records of how your NOL was calculated and how much remains, because you might be applying this loss many years into the future. Large corporations likewise must track NOL carryforwards (often in footnotes of financial statements) and also be mindful of an extra rule – IRC Section 382 – which can limit NOL usage if the corporation undergoes an ownership change (typically when more than 50% of the company’s stock is sold or restructured). Section 382 essentially caps how much NOL a corporation can use per year after a change in control, to prevent trafficking in loss corporations.
Passive Activity Losses – The Waiting Game to Use Your Losses
Passive activity losses come from business or investment ventures in which you’re not actively involved. Common examples are rental real estate losses or losses from limited partnerships where you’re a silent investor. The IRS (under IRC §469) generally disallows passive losses in the current year beyond passive income. In other words, you can only deduct passive losses up to the amount of passive income you have (passive income might include rent, or income from other ventures in which you don’t materially participate). If you have more passive losses than passive income, the excess loss is suspended and carries forward to future years.
There’s no dollar limit or time limit on how long passive losses can carry forward – they remain on your tax records until you can use them. When can you use a suspended passive loss? Either when you have passive income in a later year (then the carryforward loss is allowed up to the amount of that passive income), or when you sell or fully dispose of the activity that generated the loss. Upon a full disposition to an unrelated party, all the accumulated passive losses from that activity become deductible in that year, even against non-passive income. This means, for example, if you’ve been carrying rental property losses for years, you can take all those losses when you sell the rental property outright.
A special exception for rental real estate: if you actively participate in your rental (a lower bar than “material” participation) and your income is under $100,000, you can deduct up to $25,000 of rental losses per year against other income. This $25k allowance phases out between $100k and $150k of modified adjusted gross income. Any disallowed rental losses beyond that still carry forward. Also note, before the passive loss rules kick in, you must have sufficient at-risk basis in the activity (under IRC §465). Losses beyond your investment (for example, losses funded by certain non-recourse loans) are also suspended until you invest more or the activity earns profit.
The key with passive losses is patience – you might accumulate losses on paper for years, but they’re not gone. Keep track of them (typically on Form 8582 for individuals) so you can benefit when circumstances allow. Taxpayers who qualify as real estate professionals (meeting specific IRS time tests) can treat rental losses as non-passive (fully deductible); but short of that status, most rental losses get deferred. The silver lining is that when your passive investments finally pay off or are sold, those past losses will unlock and provide a significant tax break in that year.
Excess Business Losses – When Big Losses Get Capped and Carried Over
The Excess Business Loss (EBL) rule is a newer limitation (first enacted in 2018, effective mainly from 2021 onward) that targets very large business losses claimed by individuals and other non-corporate taxpayers. An “excess” business loss is the amount by which your total business deductions exceed your total gross income from business, beyond a threshold amount. For 2023, this threshold is $578,000 for a married joint filer or $289,000 for a single filer (these amounts adjust annually for inflation). In practical terms, if you’re a non-corporate taxpayer (for example, a sole proprietor, partner, or S corp shareholder) and you incur a huge business loss, you can only deduct up to that threshold against your other income that year. Any loss amount above the threshold is disallowed in the current year.
What happens to the disallowed excess loss? It doesn’t vanish – it converts into a net operating loss (NOL) carryforward for the next tax year. Essentially, the EBL limitation delays the use of part of your loss. The following year, that carried-forward amount is treated as an NOL (subject to the 80% income limitation when used). For example, suppose a single filer has a $1 million loss from a business in 2023 and also has $500,000 of other income (salary, investments). The EBL threshold for single filers is ~$289,000, so they can use $289,000 of the business loss to offset other income in 2023. The remaining $711,000 of loss is disallowed for 2023. That $711,000 is carried forward as an NOL into 2024. In 2024, it can offset up to 80% of taxable income each year going forward (per the NOL rules).
The excess business loss limitation is scheduled to apply at least through tax year 2028 (Congress extended it beyond its original 2025 sunset). It’s important to note that this limitation applies after other loss limitations. So, for example, if you have a partnership loss, you first apply basis and at-risk limits, then passive loss limits, and then the EBL cap at the very end. Only non-corporate taxpayers are subject to EBL rules – C corporations can use business losses freely (they just create NOLs without this extra cap). High-income individuals, especially those with multiple pass-through businesses, should be mindful of the EBL rules when doing tax planning, as they might not be able to deduct an unlimited loss in the year it occurs. EBL disallowed amounts will show up on Form 461 and flow into your NOL calculation for the next year.
Carryforward Rules for Individuals, Pass-Throughs, and Corporations
Individual Taxpayers & Sole Proprietors
For individuals filing Form 1040 (including sole proprietors who report business income on Schedule C or farmers on Schedule F), loss carryforwards come into play in a few ways. As discussed, individuals can have capital loss carryovers if their investment losses exceed gains (limited to $3,000 deduction per year). They might also generate an NOL if their business losses, rental losses, or other allowable deductions outweigh their income. In practice, a sole proprietor with a significant business loss could end up with a personal NOL that they carry forward. Likewise, a landlord with rental losses might carry those forward under the passive activity rules if they can’t use them currently.
One thing individual taxpayers should watch out for is the hobby loss trap. If you run an activity that continually loses money (like a side business that hasn’t shown a profit in years), the IRS might reclassify it as a not-for-profit hobby rather than a business. Hobby losses are not deductible beyond hobby income – meaning you can’t carry forward hobby losses at all. The general safe harbor is that if an activity shows a profit in at least 3 out of 5 years (or 2 out of 7 years for horse breeding farms), it is presumed to be a bona fide business. Otherwise, you may have to prove your profit motive to claim losses. So while there’s no hard limit to carrying forward legitimate business losses, an individual who reports years of losses should be prepared to substantiate that they are running a real business (to avoid losing deductions in an audit).
Individual taxpayers claim carryforwards on their returns as follows: capital loss carryovers are reported on Schedule D each year (the form will have you compute and apply your carryforward automatically). NOL carryforwards are taken as a deduction on the face of Form 1040 (specifically Schedule 1) – you’d typically include a statement or Form 1045 worksheet showing the NOL calculation. Passive loss carryforwards for rentals and other activities are tracked on Form 8582 and related worksheets until they’re allowed. It’s crucial for individuals to keep prior year tax documents, worksheets, or tax software records that detail any carryforward amounts. That way, you don’t forget to use them (and you have proof of the losses if the IRS questions them).
Pass-Through Entities (S Corps & Partnerships)
Pass-through entities like S corporations, partnerships, and LLCs (taxed as partnerships or S corps) don’t pay tax themselves – instead, profits and losses “pass through” to the owners’ personal tax returns (Form 1040). This means the entity doesn’t generally carry losses forward; the losses flow to the owners each year. However, owners face a few additional hurdles before they can use those losses. First, an owner’s loss deduction is limited by their basis in the entity (basically how much they’ve invested or left in the business). If the pass-through allocates a loss larger than your basis, the excess loss is suspended at the owner level until you restore basis (say by contributing more capital or the company earning future profits). That suspended loss is essentially a carryforward for you as the owner, not for the entity.
Next, the at-risk rules (IRC §465) require that you actually have money or property “at risk” in the business for a loss to be deductible. If part of your loss is from borrowed funds for which you aren’t personally liable, for example, you might not be at risk and that portion of loss is deferred. After at-risk, the passive activity loss rules may apply if you’re not active in the business. A passive loss from a partnership or S corp is treated just like any passive loss – you carry it forward until passive income or disposal allows it (as explained earlier).
Only after clearing basis, at-risk, and passive tests does a pass-through loss actually deduct on your return. At that point, if your total losses are extremely large, the excess business loss (EBL) limit might still cap how much you can use in one year (with any remainder becoming an NOL forward). The bottom line: pass-through losses can and do carry forward, but the carryforward typically occurs on the owner’s side of the equation, not on the business’s tax return. Each year, your K-1 from the entity will show the share of loss, and any suspended losses are tracked via forms (like Form 6198 for at-risk or your own records for basis limitations). As an owner, be diligent in tracking your basis and any suspended losses so that when you eventually have basis/income to use them, you don’t miss out.
C Corporations (Regular Corporations)
C corporations (regular taxable corporations) use loss carryforwards a bit differently because the corporation itself is the taxpayer. A corporation that incurs a net operating loss keeps that NOL on its own books to carry forward against future corporate taxable income. Under the current federal rules, corporate NOLs also enjoy indefinite carryforward and are subject to the same 80% of taxable income limitation per year. (Before 2018, corporations could carry NOLs back 2 years and forward 20 years, but now carrybacks are eliminated for most, aligning corporate and individual NOL rules.)
One major consideration for corporations is the potential application of IRC §382 if there’s an ownership change. If more than 50% of the company’s ownership changes hands (for example, if a corporation is bought out by another company or new investors), the amount of NOL carryforward the corporation can use each year after the change may be severely limited. The allowable annual NOL usage is generally computed based on the value of the company at the time of change multiplied by a federal interest rate (which yields a modest yearly allowance). This prevents profitable companies from buying loss corporations just to use their NOLs. Corporate taxpayers need to plan around §382 if they anticipate equity shifts – otherwise, they might carry forward a large NOL but only be able to use a small fraction each year.
For corporate capital losses, as noted earlier, they can’t offset ordinary income and have a 3-year carryback/5-year carryforward window. Corporations must file for refunds if carrying back a capital loss to prior years with gains, or keep track of carryforwards for use against future capital gains. If a corporation is part of a consolidated group (filing a consolidated return with affiliates), special rules determine how NOLs and capital loss carryforwards are shared or limited among the group members. Additionally, unlike individuals, corporations are not subject to passive activity loss limitations in the same way. (Closely held C corporations do have some passive loss restrictions, but many corporations either materially participate in their operations or are structured differently, making it a less common issue.) The absence of an EBL limit for corporations means a C corp with a giant loss can fully convert it to an NOL without the extra cap – though again, §382 can curb its usage if ownership shifts.
In summary, corporations can carry forward losses to shield future profits from tax, and there’s no absolute dollar limit to how much. But they must navigate the technical rules like §382 and keep an eye on the calendar for capital loss expirations. Many large companies strategically use NOL carryforwards (disclosed in their financial statements) to minimize taxes for years – a practice completely legal under the tax code, as long as the losses are bona fide.
State-by-State Nuances: How States Treat Loss Carryforwards
State income tax laws often have their own twist on loss carryforwards. While many states start their tax calculations with federal taxable income, they don’t always adopt all federal rules on losses. The result is that your available loss carryforwards for state tax purposes might differ from what you have federally.
A primary difference is the carryforward period. The IRS now allows NOLs to carry forward indefinitely, but not all states updated their laws to match. Some states still impose a fixed carryforward limit (for example, 20 years was a common limit following the old federal rule). A few states have even shorter carryforward periods or require losses to be used within a certain timeframe. On the flip side, a handful of states allow indefinite carryforwards like federal law.
Many states also disallow carrybacks even when the federal law used to allow them. So typically, you won’t get to carry a loss back for a state refund unless the state specifically permits it (and most don’t, especially post-TCJA). For instance, when the CARES Act temporarily allowed federal NOL carrybacks in 2020, numerous states chose to decouple and did not allow those carrybacks for state taxes.
Another nuance is how much of the loss you can use each year at the state level. Some states impose their own version of the 80% limitation or other caps. For example, Pennsylvania historically capped corporate NOL usage to a percentage of taxable income (40% in some years, gradually rising to 80%). This meant even if a Pennsylvania company had huge NOLs, it still had to pay tax on a portion of its income. California, in times of budget crisis, has temporarily suspended the use of NOL carryforwards for certain years or for certain high-income taxpayers (forcing companies and individuals to delay using their losses until the suspension lifted). These sorts of measures mean you have to track your losses separately for state purposes.
States may also have unique rules regarding who can use the loss. If you earned a loss in a state where you had business operations but later you stop filing in that state, you often can’t use that old loss against income earned in another state. Some states require continuity of filing or “nexus” in the loss year and the carryforward year. Additionally, if a company changes its business form or undergoes a merger, the state might not respect the carryforward (similar to how §382 limits things federally, some states have their own change-in-ownership provisions or may outright disallow carryovers in a reorganization).
It’s critical to consult your specific state’s tax code or a CPA for state loss rules. For instance, New York generally conforms to federal NOL rules for corporate taxes but has certain adjustments and requires that the company be subject to the same tax (franchise tax vs. bank tax, etc.) in the loss year and carryforward year. New Jersey caps NOL carryforwards at 20 years for corporation business tax. Illinois and Massachusetts have 20-year limits as well. Some states without income tax (like Texas or Florida for individuals) make the issue moot on the personal side, but their corporate taxes (Texas’s franchise tax or Florida’s corporate income tax) may have their own NOL provisions. The bottom line: after handling your federal loss carryforward, always check your state’s treatment – you might have less time or different limits on using losses for state taxes.
For example, here are a few state-specific loss carryforward policies:
| State | Loss Carryforward Highlights |
|---|---|
| California | Generally follows federal: no carryback, indefinite carryforward with 80% limit. However, CA temporarily suspended NOL deductions for high-income taxpayers in 2020-2022 (budget-related). Capital losses mirror federal $3k rule. |
| Pennsylvania | Limits corporate NOL usage to a percentage of taxable income (e.g., 40%, stepping up to 80% in coming years). No carryback. Historically had both a percentage cap and a flat cap (the flat dollar cap was struck down by courts as unconstitutional). |
| New York (Corp) | Conforms to federal NOL rules (no carryback, and allows indefinite carryforward for losses after federal conformity date). However, loss carryovers can only be used within the same tax regime. For example, if a corporation was taxed under a special bank tax in the loss year but under the general corporate franchise tax in the carryforward year, the NOL might not be usable. |
| Illinois | Allows NOL carryforward up to 20 years for corporate taxes (no indefinite carryforward if the state hasn’t adopted the TCJA change). No NOL carrybacks. Individuals generally use federal AGI as a starting point, so their state taxable income already reflects federal NOL usage limitations. |
IRS Red Flags: Can Big Loss Carryforwards Trigger an Audit?
A common concern is whether carrying forward large losses will draw unwanted attention from the IRS. There is no specific dollar amount of loss that automatically triggers an audit. The IRS doesn’t have a rule like “audit anyone with over $X in carryforwards.” In fact, loss carryforwards are a normal part of tax law and many large businesses (and individuals) legitimately use them.
However, certain scenarios can raise red flags. The IRS uses a scoring system to identify returns for audit, and extreme or unusual entries can increase your score. For example, if you report very high income in one year but pay almost no tax because you’re using a massive NOL carryforward, that might stand out for review. Consistently reporting business losses year after year is another trigger – as mentioned, the IRS may suspect a hobby or improper expense deductions if a Schedule C business never shows a profit. Large Schedule C losses that offset hefty W-2 income can be a red flag, especially if the business activity sounds like it could be personal enjoyment (e.g., breeding horses, expensive hobbies).
Another area of scrutiny is rental real estate losses. By default these are passive, so if someone with a high income is deducting large rental losses annually, it’s often because they claimed real estate professional status to avoid the passive loss limits. The IRS knows this is a common grey area and may audit to verify that the taxpayer actually qualifies (since the hours requirements are strict). Similarly, if you claim the special $25,000 rental loss allowance but your income is just above the phase-out range, the IRS might double-check the calculation.
Carryback claims (when they were allowed or in special cases) tend to draw IRS review more than carryforwards, because a carryback usually means you’re requesting a refund from a prior year. Large refund claims get attention. While carrybacks are mostly gone now, corporations that carry back capital losses or any taxpayer carrying back a farming NOL should ensure the claim is airtight.
Crucially, if you do everything by the book – document your losses, file the proper forms, and follow the rules – using loss carryforwards should not by itself cause you trouble. The IRS might inquire if something looks off, but you won’t be penalized for simply having big losses as long as they’re legitimate. To be safe, maintain records proving the origin of your losses (e.g. prior year tax returns, K-1s, receipts). If you have an NOL from several years ago, keep the worksheets showing how it was calculated. That way, if the IRS ever asks, you can substantiate that yes, you really did incur those losses and you’re entitled to the deductions.
Avoid These Common Mistakes
- Mixing up loss types: Don’t assume all losses are the same. For example, a capital loss is handled differently from a business operating loss. Know which bucket your loss falls into so you apply the correct rules (e.g., don’t try to deduct more than $3k of capital losses against salary).
- Forgetting to carry the loss forward: It sounds obvious, but it happens – especially when switching tax preparers or software. Keep track of any carryforward on your last year’s return, and make sure it’s entered on the next year’s return. If you don’t claim a carryforward, you might lose its benefit forever.
- Not keeping documentation: Years later, the IRS could ask you to prove that big NOL you’re using is legit. A common mistake is failing to save prior-year returns, worksheets (like NOL computations), or original proof of losses (receipts, ledgers). Without evidence, the IRS can disallow the carryforward (as happened in Tax Court to a taxpayer who claimed multi-million-dollar NOLs without records). Keep a paper trail!
- Hobby loss and passive traps: As mentioned, claiming business or rental losses that you’re not entitled to is a mistake that can backfire. Don’t try to deduct hobby expenses as if they were business losses. And if passive loss rules or the EBL limit apply, don’t ignore them – you can’t “force” a deduction that’s not allowed. Eventually, you’ll use the loss when permitted.
- Ignoring state differences: Another mistake is assuming your state taxes will honor the same carryforward amount or timing as your federal. Many filers accidentally take a loss on a state return that wasn’t allowed (maybe the state requires an add-back or had suspended NOL usage). Always adjust your state return for any decoupling from federal law. For instance, if your state disallows the NOL this year due to a suspension, make sure you don’t deduct it – carry it forward per state rules.
Pros and Cons of Loss Carryforwards
Using tax loss carryforwards can be extremely beneficial, but it also comes with some downsides to be aware of. Here’s a quick look at the pros and cons:
| Pros | Cons |
|---|---|
| Saves you money on future taxes by reducing taxable income in profitable years. | Tax relief is delayed – you might wait years to fully use a large loss (no immediate refund unless a carryback is allowed). |
| Prevents losses from going to waste (you eventually get to deduct them instead of losing the benefit). | Some losses can expire if not used in time (e.g. corporate capital losses after 5 years, or carryforwards lost if a business closes or you die). |
| Smooths out volatility – evens out your tax bills between boom and bust years. | Requires careful recordkeeping and calculations each year; carryforwards add complexity to tax filings and risk of errors. |
| Encourages investment and risk-taking (tax-wise) since you know a bad year’s losses will still help you later. | Future tax law changes or lower tax rates could erode the value of your deferred losses (they may be worth less in the future). |
Lessons from the Courts: Notable Loss Carryforward Cases
- Libson Shops v. Koehler (U.S. Supreme Court, 1957): A seminal case where the Supreme Court denied a corporation the use of an NOL after a merger because the loss didn’t stem from the same business that generated the profits. This case led to the principle that NOLs can’t be freely transferred between different businesses (a concept later embodied in tax code provisions like §382).
- United States v. Foster Lumber Co. (U.S. Supreme Court, 1977): Clarified how NOL carrybacks interact with capital gains. The Supreme Court ruled that when carrying back an NOL to a year with both ordinary income and capital gains, the NOL first offsets ordinary income (not capital gains), thus preserving capital gains for potential capital loss carryovers. This prevented taxpayers from effectively getting a double benefit from one loss.
- Amos v. Commissioner (T.C. Memo 2022-109): In this Tax Court case, a taxpayer claimed over $4 million of NOL carryforward deductions decades after the losses occurred. The court disallowed the deductions because she couldn’t adequately prove the original losses from years earlier (her own prior tax returns weren’t enough evidence). This case underscores the need to keep thorough records of losses if you plan to carry them forward far into the future.
- Villanueva v. Commissioner (T.C. Memo 2022-27): The taxpayer attempted to claim a large loss carryforward from a real estate foreclosure that had actually occurred years earlier. The Tax Court denied it, partly because the loss properly belonged to an earlier year and the taxpayer failed to file the required statement explaining the NOL carryforward. It highlights that you must claim losses in the correct year and follow procedures (like attaching the NOL computation statement) to preserve the carryforward.
- Multiple “hobby loss” cases (various years): The Tax Court has a long history of upholding the IRS’s denial of losses for activities deemed not-for-profit. For example, in cases involving horse breeding, yachting, or other recreational endeavors, if the taxpayer couldn’t demonstrate a genuine profit motive, losses were not allowed beyond income – meaning no carryforward either. These cases serve as warnings: if you want your losses to be deductible (and carryforwardable), run your venture in a businesslike manner and try to earn profit.
Frequently Asked Questions (FAQ)
Q: How many years can I carry forward a tax loss?
A: Most losses can be carried forward indefinitely under current federal law (no expiration). A notable exception is corporate capital losses, which expire after 5 carryforward years.
Q: Is there a limit to how much loss I can deduct each year?
A: Yes, by category. Net operating losses can offset up to 80% of taxable income in a year. For individuals, net capital loss is capped at $3,000 per year against ordinary income (the rest carries over).
Q: Will a big loss carryforward trigger an IRS audit?
A: Not by itself. There’s no automatic audit threshold for losses. Only if the losses look suspicious (e.g., no profit motive or misapplication of rules) would they draw scrutiny.
Q: Can I choose not to use a loss carryforward this year and save it for later?
A: Generally, no. If you have an available carryforward and taxable income, you’re required to use the loss (up to the allowed limit). You can’t arbitrarily defer it to a later year.
Q: Can I carry my losses back to prior years for a refund?
A: In most cases, no. After 2017, carrybacks were eliminated for NOLs (except certain farm losses) and for individuals’ capital losses. You typically can only carry losses forward, not back.
Q: Do states allow the same loss carryforwards as the IRS?
A: It varies by state. Some conform to federal rules, but others limit carryforward years or amounts. Always check state-specific rules – you may have less time or different limits at the state level.
Q: What happens to unused loss carryforwards if I die?
A: They expire. Personal tax loss carryforwards end with the taxpayer’s death – they can’t be transferred to heirs. (In a corporation, NOLs remain with the company, but not with the individual owners.)
Q: When can I use the passive losses I’ve been carrying forward?
A: You can use passive activity losses once you have passive income to absorb them, or when you sell the activity that generated the losses. Upon sale/disposition, all suspended losses from that activity become deductible.
Q: How many years can my business lose money before the IRS questions it?
A: There’s no strict year limit. However, showing profit in at least 3 out of 5 years (2 out of 7 for horse activities) is a guideline. Sustained losses beyond that could invite hobby-loss scrutiny.
Q: How do I actually claim a carryforward on my tax return?
A: Use the right tax forms. For example, report a capital loss carryover on Schedule D, or claim an NOL carryforward on Form 1040 (Schedule 1) with an attached worksheet of your NOL calculation.