Who can use Form 1045?

Individuals, estates, and trusts that have a net operating loss, an unused general business credit, or a Section 1256 contracts loss that can be carried back to a prior tax year.

Do I need to file Form 1045 before filing an amended return?

Yes. Form 1045 requests a tentative refund before you file an amended return (Form 1040‑X). It speeds up the refund process.

Can I file Form 1045 electronically?

The IRS does not accept an electronic filing for Form 1045, but you can complete the PDF online with Formize, save it, and mail the printed copy.

How far back can I carry an NOL?

Generally, you can carry an NOL back up to two years (or up to 20 years for certain farming losses) unless special relief applies.

What supporting documents are required?

Attach Form 172 for NOL calculations, Form 3800 for unused general business credits, and Form 6781 plus Schedule D for Section 1256 losses.

Is there a filing fee for Form 1045?

No. Form 1045 is free to file; you only pay any postage required to mail the completed form.

What if I make a mistake on the form?

Correct the error, sign again, and resend the corrected form. The IRS may reject the submission if required fields are incomplete or inaccurate.

How long does it take to receive a tentative refund?

The IRS typically processes a Form 1045 within 30 days, but processing times can vary based on workload.

IRS Form 1045 – Fillable PDF for Tentative Refund

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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.

Instructions

Form 1045 Instructions - Instructions for Form 1045, Application for Tentative Refund

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FAQ

Who can use Form 1045?
Individuals, estates, and trusts that have a net operating loss, an unused general business credit, or a Section 1256 contracts loss that can be carried back to a prior tax year.
Do I need to file Form 1045 before filing an amended return?
Yes. Form 1045 requests a tentative refund before you file an amended return (Form 1040‑X). It speeds up the refund process.
Can I file Form 1045 electronically?
The IRS does not accept an electronic filing for Form 1045, but you can complete the PDF online with Formize, save it, and mail the printed copy.
How far back can I carry an NOL?
Generally, you can carry an NOL back up to two years (or up to 20 years for certain farming losses) unless special relief applies.
What supporting documents are required?
Attach Form 172 for NOL calculations, Form 3800 for unused general business credits, and Form 6781 plus Schedule D for Section 1256 losses.
Is there a filing fee for Form 1045?
No. Form 1045 is free to file; you only pay any postage required to mail the completed form.
What if I make a mistake on the form?
Correct the error, sign again, and resend the corrected form. The IRS may reject the submission if required fields are incomplete or inaccurate.
How long does it take to receive a tentative refund?
The IRS typically processes a Form 1045 within 30 days, but processing times can vary based on workload.

HOW TO

How to fill out IRS Form 1045 for free, online in 5 easy steps:

1
Click the Fill‑out Button
Press the “Fill out this form” button on the page. The Formize PDF Filler app will open the official Form 1045 PDF.
2
Wait for the Filler to Load
Give the app a few seconds to load all interactive fields. No download or extra software is required.
3
Enter Your Information
Complete each required field – taxpayer name, SSN, loss amounts, carry‑back years, and signatures. The filler validates entries in real time.
4
Review and Save
Double‑check all numbers, then click “Save” to generate a completed PDF. You can download, print, or email the file directly from Formize.
5
Submit to the IRS
Mail the completed Form 1045 to the address listed in the instructions, or submit it with any required supporting schedules.

ABOUT

Tax forms

IRS Form 1045 is one of Tax forms that are documents used to report income, deductions, and tax liability to the relevant tax authority. These forms are an essential part of the tax filing process and are used to ensure individuals and businesses comply with tax laws and accurately calculate their tax obligations.

The specific tax forms required can vary depending on factors such as an individual's filing status, sources of income, and the country's tax laws. However, here are some common types of tax forms:

Individual Income Tax Forms: These forms, such as the 1040 series in the United States, are used by individuals to report their income, claim deductions and credits, and calculate their tax liability.

Business Tax Forms: Businesses, including sole proprietorships, partnerships, corporations, and self-employed individuals, may have to file various forms to report their income, expenses, and taxes owed. Examples include Schedule C (Profit or Loss from Business) and Form 1120 (U.S. Corporation Income Tax Return).

Employment Tax Forms: Employers are required to report employee wages and withhold and remit payroll taxes. Forms such as W-2 (Wage and Tax Statement) and 941 (Employer's Quarterly Federal Tax Return) are used for this purpose.

Investment and Retirement Account Forms: These forms are used to report investment income, capital gains, and losses, as well as contributions and distributions from retirement accounts. Examples include Form 1099-DIV (Dividends and Distributions) and Form 5498 (IRA Contribution Information).

Estate and Gift Tax Forms: When a person passes away or makes significant gifts, specific forms such as Form 706 (United States Estate (and Generation-Skipping Transfer) Tax Return) and Form 709 (United States Gift (and Generation-Skipping Transfer) Tax Return) are used to report and calculate any applicable estate or gift taxes.

It is important to note that tax laws and forms can change over time, so individuals and businesses should consult the relevant tax authority or seek professional tax advice to ensure compliance with the current requirements.

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