Selling a Gas Station: How the Sale Is Taxed, Piece by Piece

Why a gas station sale has more ordinary income than most real estate

Most commercial buildings are depreciated straight line over 39 years, so their sale produces a 25% layer and then ordinary long-term gain. A station building is different. The tax code puts any Section 1250 property that is a retail motor fuels outlet in the 15-year class, whether or not it also sells food and convenience items (IRC 168(e)(3)(E)(iii)). Fifteen-year property uses the 150% declining balance method, and it is eligible for bonus depreciation, which P.L. 119-21 made permanent at 100% for property acquired after January 19, 2025.

That fast write-off is great while you own the station. At sale, the depreciation you took above what straight line would have allowed is "additional depreciation," and IRC 1250(a) taxes it as ordinary income (100% applicable percentage for nonresidential property, 2026 law). Only the straight-line portion gets the 25% cap.

Does your building pass the retail motor fuels outlet test?

The 15-year class is not automatic for every c-store with pumps. Real property counts as a retail motor fuels outlet if it is used to a substantial extent to sell petroleum at retail and meets any one of three tests (IRS Publication 946, 2025 edition):

• The building is 1,400 square feet or smaller.
• 50% or more of the gross revenue from the property comes from petroleum sales (Pub. 946, 2025).
• 50% or more of the floor space is devoted to petroleum marketing (Pub. 946, 2025).

A large travel center whose store, food service and car wash outsell fuel, inside a big building, can fail all three and fall back to 39-year straight line. Ask your CPA which method the returns used, because it changes how much of your building gain is ordinary. Separately, asset class 57.1 in Publication 946 puts service station buildings, petroleum marketing land improvements and car wash buildings in the 15-year class, while class 57.0 puts Section 1245 petroleum marketing equipment such as dispensers in the 5-year class.

The allocation: land, building, tanks, equipment, inventory, goodwill

Buyer and seller split the price under IRC 1060 and each files Form 8594. For a station the lines usually are:

Fuel and merchandise usually transfer at cost by a count on closing day, so they add little gain. The exception is a station on the LIFO method: inventory sold at today's cost against old LIFO layers produces ordinary income equal to the reserve. Inventory also cannot be reported on the installment method (IRC 453(b)(2)(B)). Our purchase price allocation analysis shows how to defend the split.

Underground storage tanks, escrows and indemnities

The tanks are where gas station deals stall. Federal rules in 40 CFR Part 280 require owners of petroleum tanks at marketing facilities to show financial responsibility of at least $1 million per occurrence (40 CFR 280.93, current rule). Buyers and lenders order environmental reports and often ask the seller to fund an escrow or holdback for cleanup, or to sign an indemnity that survives closing.

• Escrow or holdback. Price money you cannot reach until a condition clears. Depending on the escrow's restrictions, the gain on it may be reported when it is released rather than at closing; have your CPA review the escrow agreement before signing.
• Indemnity paid later. If you pay cleanup costs after the sale because of your indemnity, the payment generally relates back to the capital gain sale. Under Arrowsmith v. Commissioner (1952), a later payment tied to an earlier capital transaction takes the character of that transaction, so it is usually a capital loss rather than an ordinary deduction.
• Tanks in a 1031. The regulations list oil and gas storage tanks as inherently permanent structures, so they are real property for a 1031 (Treas. Reg. 1.1031(a)-3(a)(2)(ii)(C)). Dispensers, coolers and the business are not. More in our 1031 exchange analysis.

Branded supply agreements and the dealer side

Most branded stations buy fuel under a supply agreement with a refiner or jobber. The agreement typically gives the supplier approval rights or a right of first refusal on a sale, sets a remaining term the buyer must assume, and may require repayment of the unearned part of image, rebranding or volume incentive money if you sell or debrand early. How you booked those incentives when you got them decides whether a repayment is a deduction or a cost of the sale, so ask your CPA before you price the deal.

Termination and non-renewal of motor fuel franchises are governed by the Petroleum Marketing Practices Act. A buyer who wants to switch brands may push the cost of buying out the agreement onto you through price. If you sell the real estate but keep the business, or lease the site to an operator, see sale-leaseback for how that splits the gain.

Carrying a note: what the installment method can and cannot spread

Seller financing is common for stations because bank lenders discount environmental risk. The installment method spreads the long-term gain, but it does not spread recapture: every dollar of Section 1245 and Section 1250 ordinary recapture is taxed in the year of sale even if you receive only the down payment (IRC 453(i)), and the 25% gain is reported before the lower-taxed gain (Treas. Reg. 1.453-12).

In the second example the 4-year note brings the total tax caused by the sale to $568,701 compared with $622,701 for cash, a difference of $54,000, because most of the long-term gain lands in lower brackets. Most of the tax still falls in 2026, so size the down payment to cover it. Protect the note with a first-position deed of trust on the site, a UCC lien on equipment, a personal guarantee from the buyer's owners and a covenant to keep the tanks compliant. See our installment sale of a business analysis and recapture in an installment sale.

Owner-operators and the 3.8% tax

If you work the station, the gain on business assets is generally outside the 3.8% net investment income tax because you materially participate (IRC 1411(c)(1)(A)(iii), thresholds fixed in statute). That is why both examples show no NIIT. If you lease the site to a dealer instead, the real estate gain is investment income and the 3.8% applies above $250,000 of joint modified AGI. Georgia taxes the gain at a flat 4.99% for 2026 (HB 463), so the Georgia page and the residency change analysis are worth a read before closing. To see your station's allocation, note and 1031 options side by side, get the Big Sale Tax Analysis.

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