What it means
The category is deliberately broad. It includes disposal gains, insurance recoveries, bargain purchase gains on a cheap acquisition, tax settlements, restructuring costs, impairments and litigation outcomes, any of which can be large enough to swing a reported result.
What unites them is that they say very little about the profitability of next year's trading. The reason to care is comparability.
A company whose reported pre-tax profit jumps 20% may have grown underlying profit by only 10% because a property sale made up the difference, and paying a higher multiple for that reported growth would be an expensive error. Underlying and like-for-like figures exist precisely to remove this noise.
There is an asymmetry worth watching for. Management is usually enthusiastic about excluding one-time losses from adjusted earnings and noticeably quieter about excluding one-time gains, which is how adjusted profit drifts permanently above statutory profit.
A quick sanity check is to ask whether the same adjustment would have been made if the sign were reversed. Accounting standards no longer permit a separate extraordinary items line in most frameworks, so these amounts are folded into ordinary income and expense categories and explained in the notes.
That means you have to read the notes and segment disclosure rather than expecting a tidy line on the face of the income statement. UK and international reporting often uses the word exceptional for the same idea.
Tax and cash treatment vary item by item. A disposal gain may be partly sheltered by capital allowances, while a settlement may be fully deductible, so the after-tax effect rarely matches the headline number.
Checking the cash flow statement shows which items moved money and which were purely accounting entries.
In practice
Real-world examples.
Example
A food processor suffers a fire and receives $6,500,000 from its insurer against $4,000,000 of clean-up and replacement costs. The net $2,500,000 gain lifts reported profit but tells shareholders nothing about how the factories are trading.
Example
A hotel group sells a city centre site for $40,000,000 against a book value of $26,000,000, recording a $14,000,000 gain. The gain masks a 3% decline in trading profit at the remaining hotels, which only appears in the segment note.
Example
A pharmaceutical company pays $18,000,000 to settle a patent dispute and excludes it from adjusted earnings per share. The cash left the business all the same, and the cash flow statement shows operating cash falling well below adjusted profit.
Formula
Calculation
Underlying pre-tax profit = reported pre-tax profit - net one-time gains + net one-time losses
A distribution group reports pre-tax profit of $60,000,000. The notes disclose a $12,000,000 gain on selling a depot, a $4,000,000 legal settlement and a $3,000,000 impairment of software.
Net one-time effect = $12,000,000 - $4,000,000 - $3,000,000 = $5,000,000 of net gain.
Underlying pre-tax profit = $60,000,000 - $5,000,000 = $55,000,000.
The prior year's pre-tax profit was $50,000,000 with no one-time items at all. Reported growth therefore looks like ($60,000,000 - $50,000,000) / $50,000,000 = 20%, while underlying growth is ($55,000,000 - $50,000,000) / $50,000,000 = 10%. Half the apparent improvement came from selling a depot that can only be sold once.Case study
Seen in the real world.
The following is illustrative and the company is invented. Larkfield Distribution, a fictional regional wholesaler, reported pre-tax profit of $34,000,000, which included a $9,000,000 gain on selling a surplus warehouse and $2,000,000 of restructuring costs. The net one-time effect was a $7,000,000 gain, so underlying pre-tax profit was $27,000,000 against $26,000,000 the previous year, growth of under 4%.
The management bonus scheme was tied to reported pre-tax profit, which had risen 31% from the previous year's reported $26,000,000, so the scheme paid out in full. The remuneration committee, reviewing the outcome, concluded that a one-off property sale had triggered a bonus that trading performance did not justify.
For the following year the committee redefined the target as underlying pre-tax profit, with one-time items identified by the audit committee rather than by management. The change cost nothing to implement and removed an incentive to sell assets in order to hit a number.
Watch out
Common mistakes.
- Stripping out one-time losses while quietly keeping one-time gains, which produces an adjusted profit figure that systematically flatters the business.
- Assuming an item labelled exceptional in the accounts is automatically outside normal trading, when the label reflects management judgement rather than a hard rule.
- Comparing this year's adjusted profit with last year's statutory profit, which mixes two different measures and produces a meaningless growth rate.
Questions
People also ask.
What is the difference between a one-time item and a one-time charge?
A charge is always a cost, whereas an item can be either a gain or a loss, so the adjustment can go in either direction.
Are extraordinary items the same thing?
Not quite, because the formal extraordinary items category has been removed from most accounting frameworks, so unusual amounts now sit within ordinary income and expense lines and are explained in the notes.
How many one-time items are too many?
If unusual amounts appear in most years, treat them as a normal cost of running that particular business and build an average into your forecasts.
From the founder's library
Take it further with the book.
Build your financial confidence beyond this definition. Shihan's full-length guide, Accounting Fundamentals, takes the same plain-English approach and turns it into a complete, practical playbook for non-finance managers, business owners and students - with chapter-end quiz answers and presentation slides included.
25% off with code MMHQ25, applied at checkout. Priced in USD - checkout may show the equivalent in your local currency.
View the book and save 25%Related