What is a tentative refund?
John Thompson
Published Feb 28, 2026
Form 1045 can be disputed by the IRS or the taxpaying entity after the refund is processed, which is why it is labeled as a tentative refund. In contrast, the information and claims made on Forms 1040X and 1041 are assumed by all parties to be correct and final.
How long do you have to file Form 1045?
within 1 year
Generally, you must file Form 1045 within 1 year after the end of the year in which an NOL, unused credit, net section 1256 contracts loss, or claim of right adjustment arose.
Who must file form 8886?
Any taxpayer, including an individual, trust, estate, partnership, S corporation, or other corporation, that participates in a reportable transaction and is required to file a federal tax return or information return must file Form 8886.
Can you file Form 1045 application for tentative refund?
Who Can File Form 1045: Application for Tentative Refund? Individuals, estates, and trusts can file Form 1045: Application for Tentative Refund instead of using Form 1040-X for individuals or using Form 1041 for estates or trusts. Form 1045 is used to file for a quick tax refund, while Forms 1040X and 1041 are not processed as quickly.
What do you need to know about Form 1045?
An individual, estate, or trust files Form 1045 to apply for a quick tax refund resulting from: The carryback of an NOL. The carryback of an unused general business credit. The carryback of a net section 1256 contracts loss.
Where to enter loss amount on Form 1045?
Complete the questions at the top of the form. Enter the loss amount (as a positive number) from Line 25 of Form 1045 Schedule A-NOL on Line 10 in the “After carryback” column for the earliest year the loss is being carried back.
When to file Form 1045 for NOL year?
Generally, you must file Form 1045 on or after the date you file your tax return for the NOL year, but not later than one year after the end of the NOL year. If the last day of the NOL year falls on a Saturday, Sunday, or holiday, the form will be considered timely if postmarked on the next business day.
