Key Takeaways
- Form 1045 requests quick tax refunds from carrybacks.
- Processes refunds within 90 days, faster than amended returns.
- Used for NOL, business credit, and claim of right adjustments.
- Must be filed separately within one year of tax event.
What is Form 1045?
Form 1045, known as the Application for Tentative Refund, is an IRS document used by individuals, estates, or trusts to quickly request a refund for overpaid taxes resulting from carrybacks of net operating losses or business credits. It offers a faster alternative to filing amended returns by typically processing refunds within 90 days.
This form is essential when you've experienced adjustments like net operating loss carrybacks or claims under IRC section 1341(b)(1), helping recover taxes paid in prior years efficiently.
Key Characteristics
Form 1045 streamlines tax refund requests with these main features:
- Quick Processing: The IRS aims to process refunds within 90 days, much faster than amended returns.
- Eligible Adjustments: Includes net operating loss (NOL) carrybacks, unused general business credits, and net section 1256 contracts losses.
- Separate Filing: Must be mailed separately and cannot be attached to the original tax return.
- One-Year Deadline: Generally must be filed within one year after the end of the tax year when the loss or credit occurred.
- Tentative Refund: Refunds are issued tentatively and may be subject to later adjustments or audits.
How It Works
To use Form 1045, you compute your net operating loss or other qualifying adjustments, then apply these amounts to prior tax years to claim a refund. The process involves recalculating your tax liability for up to three preceding years, reducing taxable income accordingly.
The form includes Schedule A for NOL computation and sections to detail decreases in tax for each carryback year. Once completed and signed, you mail the form with supporting documentation to the IRS service center. Tax software often assists with this process by automating calculations and data entry.
Examples and Use Cases
Form 1045 is particularly useful in scenarios involving significant business losses or credit carrybacks. Here are some examples:
- Airlines: Companies like Delta that experience fluctuating earnings may use NOL carrybacks to offset prior profitable years.
- Investors: Those managing portfolios with futures contracts might encounter net section 1256 contracts losses eligible for carryback claims.
- Taxpayers with Capital Losses: Individuals with large capital loss carryovers can benefit from filing Form 1045 to expedite refunds.
Important Considerations
Filing Form 1045 requires timely action within the allowed one-year window and accurate computation of carrybacks. Since refunds are tentative, keep thorough records as adjustments may follow.
Understanding related financial concepts like fair market value can assist in precise reporting. For broader investment insights, consider exploring guides such as best low-cost index funds to optimize your portfolio alongside tax planning.
Final Words
Form 1045 offers a faster route to reclaiming certain tax overpayments through carrybacks, making it a valuable tool for eligible taxpayers. Review your prior tax years for potential net operating losses or credits, then consider filing this form to expedite your refund.
Frequently Asked Questions
Form 1045 is an IRS application for a tentative refund, allowing individuals, estates, or trusts to quickly request a refund for taxes paid in prior years due to specific carrybacks or adjustments like net operating losses or general business credits.
Taxpayers who have a net operating loss, unused general business credit, net section 1256 contracts loss, or an overpayment due to a claim of right adjustment can file Form 1045 to request a tentative refund for prior tax years.
Form 1045 provides a faster way to get a tentative refund, typically processed within 90 days, whereas amended returns like Form 1040-X or 1041-X take several months. However, Form 1045 refunds are tentative and may be adjusted after further review.
You must file Form 1045 within one year after the end of the tax year in which the loss, credit, or adjustment occurred to qualify for a tentative refund.
No, Form 1045 cannot be attached to your original tax return. It must be filed separately, mailed in its own envelope to the IRS.
You'll need prior-year tax data including taxable income before carryback, adjustments like net capital loss deductions, and details of any net operating losses or credits. Schedule A is used to compute the NOL carryback and related tax decreases.
Yes, taxpayers can choose direct deposit for faster receipt of their tentative refund when filing Form 1045.
Many tax software programs automate Form 1045 preparation by pulling data from prior returns and guiding you through NOL computations and carrybacks, making the process easier and more accurate.


