The Excess Business Loss Limit Isn't Going Away: The IRA Extends Section 461(l) Through 2028

Key takeaways

• IRC § 461(l) limits the amount of business losses that non-corporate taxpayers can deduct in a single year — excess losses are not permanently lost but must be carried forward as net operating loss carryforwards.
• For 2022, the threshold is $270,000 for single filers and $540,000 for married-filing-jointly (indexed annually for inflation). Business losses above these amounts become NOL carryforwards.
• The TCJA had set § 461(l) to expire after 2025. The Inflation Reduction Act, signed August 16, 2022, extended the limitation through taxable years ending before January 1, 2029.
• The practical result for owners who projected that large current losses would offset ordinary income: those projections must be revised.

What section 461(l) actually limits

Section 461(l) applies to non-corporate taxpayers — individuals, trusts, and estates — who have net business losses exceeding the annual threshold. The limitation aggregates business income and loss items across all trades or businesses, offsets them against each other, and then compares the net against the threshold.

Business losses above the threshold are "excess business losses" and are added to the taxpayer's net operating loss carryforward rather than deducted against non-business income (such as wages, interest, dividends, or capital gains) in the current year.

The 2022 thresholds — $270,000 single / $540,000 married filing jointly — are reported on Form 461 and attached to the individual return.

Who this affects and how

The limitation is most significant for:

Owners of pass-through businesses with large current-year losses. A partnership or S corporation with an operating loss that flows through to a partner or shareholder is subject to the limitation at the individual level after applying at-risk and passive-activity rules. A partner receiving a $1 million distributive loss share may deduct only the threshold amount against other income in the current year — the excess becomes an NOL.

Real estate investors with large depreciation or cost-segregation deductions. Real estate activities that produce losses through accelerated depreciation or bonus depreciation are frequently subject to § 461(l) even when the investor materially participates and has escaped passive-loss limitations.

Private investors with large current-year loss events. A business disposition, casualty loss, or accelerated write-off that produces a large loss in a single year hits the § 461(l) ceiling — the loss does not vanish, but the tax-rate benefit of taking it currently is deferred.

The extension: what it means for planning

Prior to the Inflation Reduction Act, § 461(l) was set to expire after December 31, 2025. The anticipated expiration was built into planning assumptions for some taxpayers who expected to benefit from large business losses in 2026 or 2027.

The IRA's extension through 2028 eliminates that expectation. Business losses exceeding the threshold will remain limited through taxable years ending before January 1, 2029.

The carryforward is not permanent loss. The excess business loss that becomes an NOL carryforward is carried forward indefinitely under the post-2017 NOL rules — it is not forfeited. But it can only offset 80% of taxable income in any subsequent year, it does not carry back, and it sits dormant until there is income to absorb it. The time value of the deferred deduction is the real cost.

Estimated payments should reflect the limitation. Pass-through owners whose annual loss often exceeds the § 461(l) threshold but who have been estimating taxes as though a full deduction were available need to recalibrate. The timing of loss recognition, and the mix between business and non-business income in a given year, should be modeled quarterly.

Tax structuring around § 461(l) has limits. Some practitioners have explored whether shifting loss activity into C corporation structures avoids the limitation — § 461(l) applies only to non-corporate taxpayers. That analysis is fact-specific and involves tradeoffs that include the C corporation's separate tax rate, the loss of flow-through treatment for future income, and the potential for double taxation. Structural changes motivated primarily by § 461(l) avoidance require thorough analysis before execution.

The interaction with other loss limitation rules

Section 461(l) operates after the at-risk rules (§ 465) and passive activity loss rules (§ 469). A loss that survives those limitations is then measured against the § 461(l) ceiling. All three layers must be analyzed in sequence — a loss can clear at-risk and passive activity tests and still be an excess business loss for § 461(l) purposes.

Bottom line

The legislative tailwind that would have eliminated § 461(l) after 2025 is gone. The limitation runs through 2028, and planning that assumed otherwise must be updated. For owners with recurring large business losses, the carryforward mechanics preserve value but defer it — and the deferral cost compounds in higher-rate environments.