Significant Accounting Policies

12 Months Ended

Dec. 31, 2025

Accounting Policies [Abstract]

Significant Accounting Policies

Significant Accounting Policies

PRINCIPLES OF CONSOLIDATION – These consolidated financial statements were prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) and include the accounts of Murphy USA Inc. and its subsidiaries for all periods presented. All significant intercompany accounts and transactions within the consolidated financial statements have been eliminated.

REVENUE RECOGNITION – Revenue is recognized when obligations under the terms of a contract with our customers are satisfied; generally, this occurs with the transfer of control of our petroleum products, convenience merchandise, Renewable Identification Numbers ("RINs") and other assets to our third-party customers. Revenue is measured as the amounts of consideration we expect to receive in exchange for transferring goods or providing services. Excise and sales taxes that we collect where we have determined we are the principal in the transaction have been recorded as revenue on a jurisdiction-by-jurisdiction basis.

The Company enters into buy/sell and similar arrangements when petroleum products are held at one location but are needed at a different location. The Company often pays or receives funds related to the buy/sell

arrangement based on location or quality differences. The Company accounts for such transactions as non-monetary exchanges under existing accounting guidance and typically reports these on a net basis in its Consolidated Statements of Income. See Note 3 "Revenues" for additional information.

SHIPPING AND HANDLING COSTS – Costs incurred for the shipping and handling of motor fuel are included in Petroleum product cost of goods sold in the Consolidated Statements of Income. Costs incurred for the shipping and handling of convenience store merchandise are included in Merchandise cost of goods sold in the Consolidated Statements of Income.

TAXES COLLECTED FROM CUSTOMERS AND REMITTED TO GOVERNMENTAL AUTHORITIES – Excise and other taxes collected on sales of refined products and remitted to governmental agencies are included in Operating Revenues and Operating Expenses in the Consolidated Statements of Income. Excise taxes on petroleum products collected and remitted were $2.4 billion in 2025, $2.3 billion in 2024, and $2.3 billion in 2023.

CASH EQUIVALENTS – Short-term investments, which include governmental securities, money market funds and other instruments with governmental securities as collateral, that have a maturity of three months or less from the date of purchase are classified as cash equivalents.

MARKETABLE SECURITIES – The Company considers highly liquid treasury notes, corporate debt securities, and other funds with original maturities of more than three months to be marketable securities. Securities with less than one year to maturity are included in short-term marketable securities, and all other securities are classified as long-term marketable securities. Marketable securities are classified as held-to-maturity when the Company has both the positive intent and ability to hold the securities to maturity and are carried at amortized cost. Marketable securities are classified as available-for-sale when the Company does not have the intent to hold securities to maturity to allow flexibility in response to liquidity needs and are carried at fair value. The Company records securities at fair value on its consolidated balance sheets, with unrealized gains and losses reported as a component of accumulated other comprehensive income (loss). See Note 5 "Marketable Securities" and Note 17 "Assets and Liabilities Measured at Fair Value" for additional information on our policy and the fair value measurement of the Company's marketable securities.

ACCOUNTS RECEIVABLE – The Company’s accounts receivable are recorded at the invoiced amount and do not bear interest. The accounts receivable primarily consists of amounts owed to the Company from credit card companies and by customers for wholesale sales of refined petroleum products. The allowance for doubtful accounts is the Company’s best estimate of the amount of probable credit losses on these receivables. The Company reviews this allowance for adequacy at least quarterly and bases its assessment on a combination of current information about its customers and historical write-off experience. Any trade accounts receivable balances written off are charged against the allowance for doubtful accounts. The Company has not experienced any significant credit-related losses in the past three years.

INVENTORIES – Inventories of petroleum products are valued at the lower of cost, generally applied on a last-in, first-out (“LIFO”) basis, or market. Any increments to LIFO inventory volumes are valued based on the first purchase price for these volumes during the year. Merchandise inventories held for resale are generally valued at average cost. Materials and supplies are valued at the lower of average cost or net realizable value.

VENDOR ALLOWANCES AND REBATES – Murphy USA receives payments for vendor allowances, volume rebates and other related payments from various suppliers of its convenience store merchandise. Vendor allowances for price markdowns are credited to merchandise cost of goods sold during the period the related markdown is recognized. Volume rebates of merchandise are recorded as reductions to merchandise cost of goods sold when the merchandise qualifying for the rebate is sold. Slotting and stocking allowances received from a vendor are recorded as a reduction to cost of sales over the period covered by the agreement.

BUSINESS COMBINATIONS – The Company accounts for business combinations under the purchase method of accounting. The purchase price of an acquisition is measured as the aggregate of the fair value of the consideration transferred. The purchase price is allocated to the fair values of the tangible and intangible assets acquired and liabilities assumed, with any excess recorded as goodwill. These fair value determinations

require judgment and may involve the use of significant estimates and assumptions. The purchase price allocation may be provisional during a measurement period of up to one year to provide reasonable time to obtain the information necessary to identify and measure the assets acquired and liabilities assumed. Any such measurement period adjustments are recognized in the period in which the adjustment amount is determined. Transaction costs associated with the acquisition are expensed as incurred.

PROPERTY, PLANT AND EQUIPMENT – Additions to property, plant and equipment, including renewals and betterments, are capitalized and recorded at cost. Certain marketing facilities are primarily depreciated using the composite straight-line method with depreciable lives ranging from 3 to 25 years. Gasoline stores, improvements to gasoline stores and other assets are depreciated over 3 to 50 years by individual unit on the straight-line method. The Company capitalizes interest costs as a component of construction in progress on individually significant projects based on the weighted-average interest rates incurred on its long-term borrowings. Total interest cost capitalized was $4.4 million in 2025, $4.2 million in 2024 and $2.4 million in 2023.

The Company has undertaken like-kind exchange ("LKE") transactions under the federal tax code in an effort to acquire and sell real property in a tax-efficient manner. The Company generally enters into forward transactions, in which property is sold and the proceeds are reinvested by acquiring similar property; and reverse transactions, in which property is acquired and similar property is subsequently sold. A qualified LKE intermediary is used to facilitate these LKE transactions. Proceeds from forward LKE transactions are held by the intermediary and are classified as restricted cash on the Company's balance sheet because the funds must be reinvested in similar properties. If the acquisition of suitable LKE properties is not completed within 180 days of the sale of the Company-owned property, the proceeds are distributed to the Company by the intermediary and are reclassified as available cash and applicable income taxes are determined. An exchange accommodation titleholder, a type of variable interest entity, is used to facilitate reverse like-kind exchanges. The acquired assets are held by the exchange accommodation titleholder until the exchange transactions are complete. If the Company determines that it is the primary beneficiary of the exchange accommodation titleholder, the replacement assets held by the exchange accommodation titleholder are consolidated and recorded in Property, Plant and Equipment on the Consolidated Balance Sheets. The unspent proceeds that are held in trust with the intermediary are recorded as noncurrent assets in the Consolidated Balance Sheet as the cash was restricted for the acquisition of similar properties. At December 31, 2025 and 2024, the Company had no open LKE transactions with an intermediary.

GOODWILL AND INTANGIBLE ASSETS – Goodwill represents the excess of the aggregate of the consideration transferred over the net assets acquired and liabilities assumed and is tested annually for impairment, or more frequently if there are indicators of potential impairment. Acquired finite-lived intangible assets are amortized on a straight-line basis over their estimated useful lives, and are reviewed for impairment when events or circumstances indicate that the asset group to which the intangible assets belong might be impaired. The Company revises the estimated remaining useful life of these assets when events or changes in circumstances warrant a revision. If the Company revises the useful life, the unamortized balance is amortized over the useful life on a prospective basis. See Note 7 "Goodwill and Intangible Assets" for additional information.

IMPAIRMENT OF ASSETS – Long-lived assets, which include property and equipment and finite-lived assets, are tested for recoverability whenever events or changes in circumstances indicate that the carrying amount of the asset may not be recoverable. Indefinite-lived intangible assets are tested annually. A long-lived asset is not recoverable if its carrying amount exceeds the sum of the undiscounted cash flows expected to result from its use and eventual disposition. If a long-lived asset is not recoverable, an impairment loss is recognized for the amount by which the carrying amount of the long-lived asset exceeds its fair value, with fair value determined based on discounted estimated net cash flows or other appropriate methods. In 2025, the Company recognized impairment charges of $5.3 million, $8.2 million in 2024, and no impairment charges in 2023.

ASSET RETIREMENT OBLIGATIONS – The Company records a liability for asset retirement obligations (“ARO”) equal to the fair value of the estimated cost to retire an asset. The ARO liability is initially recorded in the period in which the obligation meets the definition of a liability, which is generally when the asset is placed in service. The ARO liability is estimated using existing regulatory requirements and anticipated future inflation

rates. When the liability is initially recorded, the Company increases the carrying amount of the related long-lived asset by an amount equal to the original liability. The liability is increased over time to reflect the change in its present value, and the capitalized cost is depreciated over the useful life of the related long-lived asset. The Company reevaluates the adequacy of its recorded ARO liability at least annually. Actual costs of asset retirements such as dismantling service stores and site restoration are charged against the related liability. Any difference between costs incurred upon settlement of an asset retirement obligation and the recorded liability is recognized as a gain or loss in the Company’s Consolidated Statements of Income.

ENVIRONMENTAL LIABILITIES – A liability for environmental matters is established when it is probable that an environmental obligation exists and the cost can be reasonably estimated. If there is a range of reasonably estimated costs, the most likely amount will be recorded, or if no amount is most likely, the minimum of the range is used. Related expenditures are charged against the liability. Environmental remediation liabilities have not been discounted for the time value of future expected payments. Environmental expenditures that have future economic benefit are capitalized.

INCOME TAXES – The Company accounts for income taxes using the asset and liability method. Under this method, income taxes are provided for amounts currently payable and for amounts deferred as tax assets and liabilities based on differences between the financial statement carrying amounts and the tax bases of existing assets and liabilities. Deferred income taxes are measured using the enacted tax rates that are assumed will be in effect when the differences reverse. The Company routinely assesses the realizability of deferred tax assets based on available positive and negative evidence including assumptions of future taxable income, tax planning strategies and other pertinent factors.  A deferred tax asset valuation allowance is recorded when evidence indicates that it is more likely than not that all or a portion of these deferred tax assets will not be realized in a future period.  The accounting principles for income tax uncertainties permit recognition of income tax benefits only when they are more likely than not to be realized.  

The Company has elected to classify any interest expense and penalties related to the underpayment of income taxes in Income tax expense in the Consolidated Statements of Income.

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES – The fair value of a derivative instrument is recognized as an asset or liability in the Company’s Consolidated Balance Sheets. Upon entering into a derivative contract, the Company may designate the derivative as either a fair value hedge or a cash flow hedge, or decide that the contract is not a hedge, and therefore, recognize changes in the fair value of the contract in earnings. The Company documents the relationship between the derivative instrument designated as a hedge and the hedged items as well as its objective for risk management and strategy for use of the hedging instrument to manage the risk. Derivative instruments designated as fair value or cash flow hedges are linked to specific assets and liabilities or to specific firm commitments or forecasted transactions. The Company assesses at inception and on an ongoing basis whether a derivative instrument accounted for as a hedge is highly effective in offsetting changes in the fair value or cash flows of the hedged item. A derivative that is not a highly effective hedge does not qualify for hedge accounting. The change in the fair value of a qualifying fair value hedge is recorded in earnings along with the gain or loss on the hedged item. The effective portion of the change in the fair value of a qualifying cash flow hedge is recorded in Accumulated other comprehensive income (AOCI) in the Consolidated Balance Sheets until the hedged item is recognized currently in earnings. If a derivative instrument no longer qualifies as a cash flow hedge and the underlying forecasted transaction is no longer probable of occurring, hedge accounting is discontinued and the gain or loss recorded in AOCI is recognized immediately in earnings. If a hedge is de-designated, hedge accounting will no longer apply and from that time the gain and losses will be recognized in earnings and any accumulated amounts in other comprehensive income will be amortized to earnings over the remaining life of the underlying instrument. See Note 14 "Financial Instruments and Risk Management" and Note 17 "Assets and Liabilities Measured at Fair Value" for further information about the Company’s derivatives.

STOCK-BASED COMPENSATION – The fair value of awarded stock options, restricted stock, restricted stock units and performance stock units is determined based on a combination of management assumptions for awards issued. The Company uses the Black-Scholes option pricing model for computing the fair value of stock options. The primary assumptions made by management included the expected life of the stock option award and the expected volatility of the Company’s common stock prices. The Company uses both historical data and current information to support its assumptions. Stock option expense is recognized on a straight-line basis over

the requisite service period of three years. The Company uses a Monte Carlo valuation model to determine the fair value of performance-based stock units that are based on performance compared against a peer group and the related expense is recognized over the three-year requisite service period. Management estimates the number of all awards that will not vest and adjusts its compensation expense accordingly. Differences between estimated and actual vested amounts are accounted for as an adjustment to expense when known. See Note 12 "Incentive Plans" for a discussion of the basis of allocation of such costs.

USE OF ESTIMATES – In preparing the financial statements of the Company in conformity with U.S. GAAP, management has made a number of estimates and assumptions related to the reporting of assets, liabilities, revenues, and expenses and the disclosure of contingent assets and liabilities. Actual results may differ from the estimates. On an ongoing basis, we review our estimates based on currently available information. Changes in facts and circumstances may result in revised estimates.