A one-time cost is a business expense that arises from a discrete event outside normal operations and is not expected to repeat. The legal fees to incorporate a company, a severance package after a layoff, the settlement of a lawsuit, or the purchase of a major piece of equipment all fit. These charges land on the books in a single period and can distort profit figures badly enough that separating them from ordinary operating expenses is essential to understanding how a business actually performs.
What Separates a One-Time Cost From a Recurring Expense
Federal accounting regulations describe these items as “unusual in nature and infrequent in occurrence.”1eCFR. 18 CFR 367.8 – Extraordinary Items A restructuring charge, a legal settlement, or a one-time equipment purchase qualifies because it stems from a specific event rather than the predictable rhythm of running the business.
Recurring expenses are the opposite: rent, payroll, utilities, insurance premiums, raw materials. They show up month after month, they are predictable enough to budget for, and they are directly tied to keeping products moving and doors open. The distinction matters because folding a $2 million lawsuit settlement into normal operating costs would make the company look far less profitable than it actually is on an ongoing basis.
One terminology note. You may still see one-time costs called “extraordinary items.” The Financial Accounting Standards Board eliminated that formal classification from U.S. GAAP in 2015. Companies can no longer present extraordinary items as a separate line on the income statement. The costs still exist; they are disclosed within the notes to the financial statements or flagged by management as non-recurring, rather than given a special accounting label.
Common Examples
One-time costs cluster around a few predictable business events: starting up, growing, restructuring, and dealing with legal problems. Recognizing the underlying event is the fastest way to classify the expense correctly.
Startup and Formation Costs
Launching a business creates a burst of spending that never repeats. Filing fees for articles of incorporation, legal costs for drafting bylaws or operating agreements, and state registration charges are all one-time outlays. So is the initial investment in a brand identity (logo design, trademark registration) and the purchase of specialized equipment needed to begin operations.
Restructuring and Exit Costs
When a company reorganizes, closes a facility, or lays off a segment of its workforce, the associated expenses are one-time charges. Severance packages, lease termination penalties, and costs to decommission or relocate equipment all fall here. Accounting standards require the liability to be recognized when the obligation actually arises, not simply when management commits to a plan.
Growth and Expansion Costs
Entering a new market or acquiring another company generates expenses that fall outside normal operations. Fees paid to consultants, accountants, and attorneys for acquisition due diligence are one-time. Large-scale product launch campaigns in a new region and the implementation of major enterprise software also qualify when they represent discrete projects rather than ongoing subscription fees.
Legal Settlements and Penalties
Settling a lawsuit, paying a regulatory fine, or resolving a contract dispute produces a one-time expense. These can be enormous relative to normal operations, which is exactly why analysts strip them out when evaluating core profitability. The tax treatment depends heavily on whether the payment is punitive or compensatory, covered further down.
Expense Now or Capitalize and Depreciate
How a one-time cost hits the financial statements comes down to a single question: does the expenditure create a long-term asset that will benefit the company in future periods? Under GAAP, expenditures providing future economic benefit must be capitalized; those that do not are expensed immediately.2AICPA & CIMA. To Capitalize, or Not: That Is the Question
Immediate Expensing
Costs that leave no lasting asset behind are recognized in full on the income statement during the period they are incurred. Severance pay, obsolete inventory write-downs, and legal defense fees are all expensed immediately. The full amount reduces pre-tax income in that period. A $500,000 restructuring charge cuts the current quarter’s pre-tax profit by the full $500,000, making that quarter’s results look worse than the company’s normal earning power.
Capitalization and Depreciation
When a one-time expenditure creates something the business will use for years, the cost is recorded on the balance sheet as an asset and expensed gradually over its useful life through depreciation or amortization. A company buying a $100,000 piece of production machinery with a ten-year useful life would record roughly $10,000 in depreciation expense each year rather than absorbing the full hit in year one. This matches the expense to the periods that benefit from the asset.
The Cloud Software Wrinkle
Enterprise software gets its own rules. If a company buys or licenses software it can run on its own servers, the implementation costs are capitalized like any other long-term asset. But if the software is accessed through a cloud hosting arrangement, updated FASB guidance requires a different treatment: hosting fees are expensed as incurred, while implementation costs (configuration, customization, data migration) are capitalized as a separate deferred cost and amortized over the term of the hosting contract.3Financial Accounting Standards Board. Accounting Standards Update 2018-15 A cloud ERP that costs hundreds of thousands to implement may not create a traditional software asset on the balance sheet at all.
The De Minimis Safe Harbor
Not every one-time purchase justifies the bookkeeping overhead of capitalization. The IRS allows businesses to elect a de minimis safe harbor letting them expense tangible property purchases below a set threshold per invoice or per item. Businesses with audited financial statements can expense items up to $5,000 each; those without audited statements can expense up to $2,500 each. It is useful for smaller purchases like office furniture or a replacement part that technically have a useful life beyond one year but are not worth tracking as depreciable assets.
Tax Deductibility
Accounting treatment and tax treatment are not the same thing. A one-time cost that shows up on the income statement may or may not be deductible on the tax return, and the rules vary by category.
Startup and Organizational Costs
Costs incurred to create a business entity are capital expenditures and cannot simply be deducted in full in year one. A corporation can deduct up to $5,000 in organizational expenditures in the year it begins business, but that allowance phases out dollar-for-dollar once total organizational costs exceed $50,000, and disappears entirely at $55,000.4Office of the Law Revision Counsel. 26 USC 248 – Organizational Expenditures Any amount beyond the immediate deduction must be amortized over 180 months (15 years), beginning with the month the business starts active operations.
A parallel rule under Section 195 lets businesses deduct up to $5,000 in startup costs (market research, employee training, pre-launch advertising) with the same $50,000 phase-out, amortizing the rest over 180 months.5Internal Revenue Service. Publication 535 – Business Expenses The phase-outs for startup costs and organizational costs apply separately, so a new corporation could potentially deduct up to $10,000 in its first year if both categories stay under $50,000.
Repairs Versus Improvements
A one-time expenditure to fix or upgrade property forces an IRS classification question that trips up many owners. Repairs that restore property to normal operating condition are deductible in the year paid. Improvements must be capitalized and depreciated. The IRS uses three tests to distinguish them: whether the work is a betterment (materially increases capacity, quality, or output), a restoration (replaces a major component or rebuilds something to like-new condition), or an adaptation (converts property to a new or different use).6eCFR. 26 CFR 1.263(a)-3 – Amounts Paid to Improve Tangible Property If the expenditure meets any one of the three, you capitalize. If it meets none, you deduct as a repair.
Government Fines and Penalties
The tax code draws a hard line here. No deduction is allowed for any amount paid to a government entity in connection with a law violation or an investigation into a potential violation. An environmental fine, a regulatory penalty, or a criminal restitution payment cannot be deducted and cannot be capitalized. There is a narrow exception for amounts specifically identified in a court order or settlement agreement as restitution for actual harm or as payment to come into compliance with the law, but the taxpayer must prove the payment genuinely serves that purpose, not just that the settlement document labels it that way.7Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses – Section: (f)(2) Exception for Amounts Constituting Restitution
Sexual Harassment Settlements With Nondisclosure Agreements
Since 2018, the tax code has denied any deduction for settlement payments or attorney fees related to sexual harassment or sexual abuse when the settlement includes a nondisclosure agreement.8Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses – Section: (q) Payments Related to Sexual Harassment and Sexual Abuse The rule applies to both the company paying the settlement and to attorney fees on both sides. Removing the confidentiality clause preserves deductibility, which creates a real pressure point in negotiations that did not exist before the Tax Cuts and Jobs Act.
Why Classification Matters Beyond Bookkeeping
Business Valuation
If you sell a business, one-time costs stop being an accounting curiosity. Buyers value companies as a multiple of adjusted earnings (often called adjusted EBITDA), and the seller’s job during due diligence is to identify every legitimate non-recurring expense that can be “added back” to reported profits. Every dollar of add-back gets multiplied by the valuation multiple, sometimes 3x to 6x or more depending on the industry.
Common add-backs include one-time legal fees, executive severance, relocation costs, large software implementations, major equipment write-offs, and discretionary owner expenses like personal vehicles or family salaries for non-working roles. Buyers will hire a third-party accounting firm to prepare a Quality of Earnings report that scrutinizes every proposed add-back. Expenses that recur every two or three years, even irregularly, rarely survive that scrutiny.
SEC Rules on Non-GAAP Earnings
Publicly traded companies routinely report “adjusted” or “non-GAAP” earnings that strip out one-time charges. The SEC regulates this under Regulation G, which requires any company disclosing a non-GAAP measure to also present the most directly comparable GAAP measure alongside it, with a quantitative reconciliation showing exactly what was excluded and why.9eCFR. 17 CFR Part 244 – Regulation G
The SEC has said a non-GAAP measure is misleading if it excludes “normal, recurring, cash operating expenses necessary to operate a registrant’s business.” Staff considers an expense recurring if it “occurs repeatedly or occasionally, including at irregular intervals.” A company cannot label a cost as one-time simply because it did not happen last quarter. The SEC also watches for asymmetry: stripping out one-time losses while keeping one-time gains can violate Regulation G.10SEC.gov. Non-GAAP Financial Measures For investors, the practical takeaway is skepticism. When a company excludes a “one-time” restructuring charge for the third year running, it is not one-time by any reasonable definition.
Forecasting and Budgeting
When analysts use historical results to forecast future performance, they “normalize” past results by removing one-time charges. If last year’s income statement includes a $1 million legal settlement, plugging that number straight into a trend analysis would understate the company’s earning power going forward. The catch is judgment. Removing genuinely non-recurring costs sharpens the picture; removing costs that actually do recur produces an overly optimistic one. Honest classification matters more than the math.