IRS Form 1045: How to apply for a Net Operating Loss (NOL) deduction?

Get to know how you can apply for the Net Operating Loss deductions

Modified on:
April 28, 2025 5:50 pm

The Internal Revenue Service (IRS) offers taxpayers with tools for reducing the economic cost of business loss through the Application for Tentative Refund Form 1045. Through the form, trusts, estates, and individuals are facilitated to advance refund claims of net operating loss (NOL) carrybacks, general business credits not utilized, or other specified adjustments. By filing Form 1045, taxpayers are able to carry over prior-year tax liability, thereby enhancing cash flow in periods of economic downturn. The following is a step-by-step explanation of eligibility requirements, calculating methods, and procedural requirements in obtaining the maximum possible benefits through NOL deduction.

Eligibility for filing form 1045

Form 1045 is reserved for qualifying taxpayers who qualify to obtain quick refunds in one of four situations: (1) NOL carrybacks, (2) carrybacks of general business credits not used, (3) section 1256 contract net losses, or (4) claim-of-right overpayments. The qualifying parties are individuals, C corporations, estates, and trusts but not partnerships, S corporations, and regulated investment companies. For NOLs that occur in tax years ending after 2020, the Tax Cuts and Jobs Act (TCJA) generally limits carrybacks to allow only indefinite carryforwards-with limited carrybacks for agricultural losses and some insurance company NOLs.

Calculating net operating losses

An NOL occurs when the deductible expenses of a taxpayer are more than gross income, as adjusted according to the provisions in IRS Publication 536. For individuals, nonbusiness deductions (such as personal exemptions, medical costs) may not be more than nonbusiness income, and capital losses are capped at capital gains. Corporations have to make adjustments for dividends-received deductions and foreign-derived intangible income exclusions. For instance, a single proprietorship with $100,000 gross income and $150,000 business deductions would carry a $50,000 NOL if no nonbusiness deductions exceed nonbusiness income.

Carryback and carryforward procedures

2018–2020 NOLs can be carried back for five years or carried forward unlimited years, providing flexibility to maximize tax liability decrease. Taxpayers must carry back losses to the first available year, and then to subsequent years until the NOL is depleted. Post-2020 NOLs typically have indefinite carryforwards, with the exception of farm losses, which still have a two-year carryback. Waiver of a carryback necessitates an official IRS notice so that the NOL is carried forward in full to future years.

Procedural guide to filing form 1045

  • Step 1: Taxpayers will then calculate the NOL on Worksheet 1 of Publication 536, subject to adjustments for nonbusiness income, capital gain, and disallowed deductions. Supporting records are amended returns and the loss year return.
  • Step 2: The form has four parts, and Schedule B (Pages 3–4) is where one reports an NOL carryback. Taxpayers mark the pre-carryback taxable income in Column 1 (third prior year) and the NOL deduction in Column 2. The refundable portion is the differential between original liability and the adjusted taxable income. For instance, where an NOL of $50,000 for 2023 is carried back to 2020 (original taxable income: $80,000), the adjusted income for 2020 will be $30,000, bringing about a refund based on differential of tax rates.
  • Step 3: Submit Form 1045 within one year of the end of the NOL year, processing within 90 days as a rule. Accelerated refunds depend on correct completion of all schedules, especially Schedule B, which shows year-by-year use of NOLs.

Common pitfalls and strategic considerations

NOL miscalculations frequently result from forgetting modification rules. For example, not restricting nonbusiness deductions to nonbusiness income or inappropriately applying capital loss limits can inflate the NOL inaccurately. Taxpayers also need to ensure that carrybacks are within TCJA limitations, since post-2020 NOLs (other than farming losses) cannot be used to offset earlier-year incomes. Advance consultation with tax professionals is recommended to deal with intricate situations, such as multi-year carryovers or changes in filing status.

IRS Form 1045 is a valuable resource for taxpayers and corporations that need to have liquidity in the form of tax refunds because of NOL carrybacks. By complying with computational rules, filing requirements, and legislative changes, taxpayers can take advantage of the use of this provision to eradicate financial pressure.

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Jack Nimi
Jack Nimihttps://polifinus.com/author/jack-n/
Nimi Jack is a graduate on Business Administration and Mass Communication studies. His academic background has equipped him with a robust understanding of both business principles and effective communication strategies, which he has effectively utilized in his professional career. He is also an author with two short stories published under Afroconomy Books.

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