Business Deductions

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Net Operating Loss (NOL)


Understanding net operating losses can be confusing. For example:
  • What is a net operating loss?
  • Who can claim a net operating loss (NOL)?
  • What can create an NOL?
  • How do you know if you have a net operating loss (NOL)?
  • When can you use an NOL?
  • How is an NOL computed?
  • How do you claim an NOL?

What is a Net Operating Loss?

Here's how IRS publication 536 describes an NOL:

If your deductions for the year are more than your income for the year, you may have a net operating loss (NOL). An NOL year is the year in which an NOL occurs. You can use an NOL by deducting it from your income in another year or years.

Who Can Claim a Net Operating Loss?

The following can claim a net operating loss:

  • Individuals (you don't have to operating a business)
  • Sole proprietors
  • Owners of pass through entities
    • Partners of a partnership
    • Members of a limited liability company
    • Shareholders of an S corporation
  • C corporations
    • If a C corporation converts to an S corporation, any NOL carryovers it had at the time of conversion cannot be used. They can only be used if the S corporation goes back to being a C corporation.

Pass-through entities such as a Partnerships and S corporations, generally cannot use an NOL at the entity level. The individuals who own these entities use their separate share of entity's income and deductions to figure their own NOL on their individual income tax return.

What Can Create an NOL?

To have an NOL, your loss must generally be caused by deductions from your:
  • Trade or business
  • Casualty and theft losses resulting from a federally declared disaster
  • Moving expenses (not deductible for most taxpayers for 2018 through 2025)
  • Rental property

The most common reason for an NOL is a loss from operating a business.

How Do You Know If You Have a Net Operating Loss (NOL)?

You may have an NOL if a negative number appears in the following cases:
  • Individuals: You subtract your standard deduction or itemized deductions from your adjusted gross income (AGI).
  • Estates and trusts: You combine taxable income, charitable deductions, income distribution deduction, and exemption amounts from your Form 1041.

Simply ending up with a negative number doesn't necessarily mean you have an NOL. There are rules that limit what you can deduct when figuring an NOL. For example, certain items are not allowed when figuring an NOL, such as:

  • Capital losses in excess of capital gains.
  • The section 1202 exclusion of the gain from the sale or exchange of qualified small business stock.
  • Nonbusiness deductions in excess of nonbusiness income.
  • The NOL deduction.
  • The section 199A deduction for qualified business income. To determine whether you have an NOL, you must first complete your tax return.

When Can You Use an NOL

The year in which an NOL occurs is called the NOL year. Generally, if you have an NOL for a tax year ending in 2020, you may carry back the entire amount of the NOL 5 years before the NOL year (the carryback period), and carry forward any remaining NOL indefinitely (the carryforward period). You may elect to waive the carryback period and simply carry the NOL forward.

Caution - Farming Losses!

If you previously carried back farming losses for 2 years and limited those losses to 80% of taxable income (before any NOL deduction) of the carryback year, you must now carry back the losses 5 years without the 80% limitation. You may need to amend your returns for which you had already filed a claim for refund.

If you end up with an NOL, the next step is to determine whether you want to carry it back or waive the carryback period and carry it forward.

Waiving the carryback period:

If you don't want to carry back your NOL, then you can carry it forward indefinitely until it's fully absorbed. To make this choice, attach a statement to your original return, filed by the due date (including extensions), for the NOL year. This statement must show that you are choosing to waive the carryback period under section 172(b)(3).

If you filed your original return on time but did not file a statement with it, you can make this choice on an amended return filed within 6 months of the due date of the return (excluding extensions). Attach a statement to your amended return and write: "Filed pursuant to section 301.9100-2" at the top of the statement.

Once you choose to waive the carryback period it is generally irrevocable. If you choose to waive the carryback for more than one NOL, you must make a separate choice and attach a separate statement for each NOL year.

Caution! If you do not file this statement on time, you cannot waive the carryback period.

How Is An NOL Computed?

You can use Form 1045, Schedule A—NOL to figure an NOL.

You can also use the worksheet in IRS Publication 536 to compute an NOL.

How do you claim an NOL?

If you carry back your NOL, you can use either:

  • Form 1045. Application for Tentative Refund
  • Form 1040-X, Amended U.S. Individual Income Tax Return

Form 1045 gets you a faster refund, but you have a shorter time to file it. In addition, you can use Form 1045 to apply an NOL to all carryback years, whereas, if you use Form 1040-X, you must use a separate Form 1040-X for each carryback year to which you apply the NOL.

Avoid costly penalties!

Use the IRS Online Tax Calendar
to check filing and deposit deadlines.