Net Operating Losses in 2025: 80% of Taxable Income Cap and No Carrybacks—Using Form 1045/1040-X Smartly

Net Operating Losses (NOLs) arise when a taxpayer’s deductible expenses exceed taxable income in a given year. In prior years, taxpayers often relied on NOL carrybacks to recoup prior-year taxes quickly. However, under the Tax Cuts and Jobs Act (TCJA) and subsequent IRS guidance, carrybacks are no longer allowed for most individual taxpayers. Instead, NOLs can only be carried forward, subject to the 80% of taxable income limitation. This rule will remain in effect for 2025 and beyond.

📌 Key NOL Rules for 2025

• 80% Cap: NOL carryforwards can only offset up to 80% of taxable income in a future year.
• No Carrybacks: With limited exceptions (like farming losses or certain casualty losses), taxpayers cannot carry back NOLs to prior tax years.
• Indefinite Carryforward: NOLs can be carried forward indefinitely until fully used.
• Separate Tracking: Post-2017 and pre-2018 NOLs must be tracked separately due to different rules.

📑 Using Form 1045 and Form 1040-X

While carrybacks are largely eliminated, Form 1045 (Application for Tentative Refund) and Form 1040-X (Amended U.S. Individual Income Tax Return) remain powerful tools for taxpayers to adjust filings strategically. Here’s how:

• Form 1045: Previously used to carry back NOLs and obtain quick refunds. In 2025, its role is limited but can still be used for other refundable claims, including credits and certain disaster-related relief.
• Form 1040-X: Taxpayers can file an amended return to properly apply NOL carryforwards, correct reporting errors, or take advantage of new IRS guidance or Rev. Proc. updates from the IRS newsroom.

Both forms are essential for taxpayers seeking timely refunds, even in the absence of traditional carrybacks.

📊 Example of NOL Application

💡 Tax Planning Strategies

• Plan income recognition carefully to maximize NOL usage.
• Track NOLs separately by year to avoid IRS disputes.
• Consider bunching deductions in one year to generate a larger NOL.
• Use Form 1040-X if IRS releases new Rev. Proc. or guidance impacting NOL reporting.