Rates are set by fiscal year, effective October 1 each year. Find current rates in the continental United States ("CONUS Rates").
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.
The following can claim a net operating loss:
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.
The most common reason for an NOL is a loss from operating a business.
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:
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.
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.
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.
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.
If you carry back your NOL, you can use either:
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.