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IRS Form 1139 – Fillable PDF

  1. Country USA
  2. Language English
  3. Activity Taxes
  4. Department Internal Revenue Service
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IRS Form 1139 – Fillable PDF

IRS Form 1139, Computation of Decrease in Tax, is used by corporations that have a net operating loss (NOL) carryback or other tax benefit that reduces the tax liability for a prior year. Filling out this form accurately can result in a significant refund.

What Is IRS Form 1139?

Form 1139 calculates the amount of tax reduction a corporation can claim for a previous tax year. It is typically filed with the original return or an amended return for the year being reduced.

How to Complete Form 1139 Online

With Formize’s fillable PDF, you can complete the form directly in your browser—no need for a separate PDF editor. Follow the simple steps in the How‑To section below.

Common Mistakes to Avoid

  • Entering the wrong tax year—double‑check the year you are reducing.
  • Mis‑calculating the NOL amount—use the worksheet attached to the form.
  • Leaving required fields blank—Formize will highlight missing data before you submit.

Download the Fillable PDF

Click the Fill out this form button on this page to launch the Formize PDF Filler. The fillable version of Form 1139 will load automatically.

Where to Get Help

If you need assistance, consult the IRS instructions that accompany Form 1139 or speak with a qualified tax professional. The Formize platform also provides tooltips for each field to guide you through the process.

FAQ
  • What is the purpose of IRS Form 1139?

    Form 1139 is used to calculate a corporation’s reduction in tax liability for a prior year, typically due to a net operating loss carryback.

  • Can I file Form 1139 electronically?

    Yes. After completing the fillable PDF with Formize, you can save the file and submit it electronically through the IRS e‑file system or attach it to an electronic return.

  • Do I need a tax professional to fill out Form 1139?

    While a professional can help with complex calculations, the Formize filler provides step‑by‑step guidance and tooltips, making it possible to complete the form yourself.

  • Is there a deadline for filing Form 1139?

    Form 1139 must be filed with the original or amended return for the year you are reducing. Generally, this follows the regular corporate tax filing deadline, including extensions.

  • What if I make a mistake after submitting?

    If an error is discovered, file an amended return (Form 1120‑X) and include a corrected Form 1139.

  • Is the PDF download free?

    Yes. The fillable PDF for Form 1139 is provided at no cost via the Formize platform.

HOW TO

How to fill out Form 1139 for free, online in 5 easy steps:

  1. 1
    Click the Fill‑out Button
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  2. 2
    Wait for the Filler to Load
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  3. 3
    Enter Your Information
    Fill each highlighted field with the required data. Tooltips provide guidance for each line.
  4. 4
    Validate and Review
    Click the "Validate" button. Formize will flag any missing or inconsistent entries.
  5. 5
    Save or Submit
    When all fields are complete, download the finished PDF or print it for mailing to the IRS.
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ABOUT

Internal Revenue Service (IRS) Forms

Form 1139 is one of the official tax forms used in the United States to report income, claim deductions and credits, calculate tax liability, and fulfill other tax-related obligations. The IRS is the federal agency responsible for administering and enforcing the internal revenue laws in the United States.

Here are some examples of Internal Revenue Service forms:

Form 1040: This is the primary individual income tax return form used by most taxpayers. It is used to report various types of income, claim deductions and credits, calculate tax liability, and determine whether a taxpayer owes additional tax or is entitled to a refund.

Form 1099: There are different variations of Form 1099, such as 1099-MISC, 1099-INT, 1099-DIV, etc. These forms are used to report income received by individuals or businesses from various sources other than employment, such as self-employment income, interest income, dividend income, and rental income.

Form W-2: This form is used by employers to report wages paid to employees and the taxes withheld from their pay. Employees use the information on Form W-2 to complete their individual tax returns.

Form 941: Employers use this form to report employment taxes, including federal income tax withheld, Social Security tax, and Medicare tax, for their employees.

Form 1065: This form is used by partnerships to report their income, deductions, and tax liability. Partnerships themselves do not pay income tax; instead, the partners report their share of partnership income on their individual tax returns.

Form 1120: This is the corporate income tax return form used by C corporations to report their income, deductions, and tax liability.

Form 990: This form is used by tax-exempt organizations, such as nonprofits and charities, to report their financial information, activities, and compliance with tax laws.

Form 8862: This form is used by taxpayers who previously claimed the Earned Income Tax Credit (EITC) but had it disallowed, and now want to claim it again.

These are just a few examples of the numerous IRS forms that exist to fulfill various tax-related obligations. The specific forms required for an individual or business depend on their unique circumstances, income sources, and deductions. It's advisable to consult the official website of the Internal Revenue Service (www.irs.gov) or seek professional tax advice to obtain accurate and up-to-date information regarding the specific IRS forms relevant to your tax situation.

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