IRS Form 1045 – Fillable PDF for Tentative Refund

Form 1045, Application for Tentative Refund, lets individuals, estates, and trusts claim a fast refund when they have a net operating loss (NOL), an unused general business credit, or a Section 1256 contracts loss that can be carried back to a prior tax year. Instead of mailing a paper form, you can complete the official PDF instantly with Formize’s online PDF filler.

What Is Form 1045?

This two‑page IRS form is used to request a tentative refund before filing an amended return. It is ideal when you need to:

• Carry back a net operating loss to a previous year.
• Carry back an unused general business credit.
• Carry back a net Section 1256 contracts loss.

How to Fill the Form Online with Formize

Formize turns the static PDF into a fully interactive, fillable document. Follow the simple steps below – no PDF editor required.

Common Mistakes to Avoid

• Leaving required fields blank: Every line marked with an asterisk must be completed, otherwise the IRS will reject the application.
• Mismatching tax years: Verify that the carry‑back year(s) you select match the year of the loss or credit.
• Incorrect signatures: Both spouses must sign on joint returns; estates and trusts need the authorized representative’s signature.
• Failing to attach supporting schedules: Attach Form 172 for NOL calculations, Form 3800 for business credits, and Form 6781 for Section 1256 losses.

Download the Fillable PDF

Click the button below to open the official IRS Form 1045 PDF in the Formize filler. The document is fully searchable, auto‑saves, and can be exported as a completed PDF ready for mailing.