Net Operating Losses

What this topic is

A net operating loss is what you have when a business's deductible expenses exceed its income for the year. The tax code lets that loss travel forward and shelter future profits, so a loss year is not only a hole in the bank account — it is a claim on taxes you would otherwise owe once you recover.

Why it matters

The claim is real but heavily conditioned. A carried-forward loss can generally offset only 80 percent of a later year's taxable income, so a company with enormous losses still writes a check the year it turns profitable. And if ownership changes hands, a separate rule caps how much of the old loss the new owners may use each year — often at a small fraction of what the buyer assumed they were getting.

Who should learn it

Owners and founders who have had a loss year or expect one, buyers pricing a company with losses on its books, and anyone trying to read the deferred tax asset on a balance sheet.

What you will understand

• What actually counts as a net operating loss — and what does not
• The current rules: no carryback, indefinite carryforward, and the 80 percent cap
• Why an ownership change can turn a large loss into a small annual trickle
• How losses behave differently inside a corporation and inside a pass-through

Prerequisites

• Section 179
• LLCs

Common misconception

"We lost money, so we owe no tax." A loss shelters income tax on profits, and only some of them. It does nothing for payroll tax, sales tax, state franchise and gross-receipts taxes, or the 20 percent of future taxable income the cap leaves exposed. Loss-making businesses still owe real money — and the loss itself can quietly stop being usable the day the cap table changes.