How Much Do Gas Station Owners Make?

Why revenue is the wrong number here

Fuel revenue passes through the business at a very small spread. A site selling 100,000 gallons a month at $3.40 books $4.1 million of annual revenue, but if gross margin is 25 cents and card interchange takes 8 of it, fuel contributes roughly $204,000 of gross profit for the entire year — before a single employee is paid. Compare that to a store doing $70,000 a month of inside sales at 32% margin, which contributes about $269,000. The store is the business; the pumps are the traffic driver.

This is why owner earnings are quoted as SDE — seller’s discretionary earnings, and why you should insist on seeing fuel gross profit and inside gross profit as separate lines. Any listing that quotes only revenue and a multiple is asking you not to look. Our gas station valuation guide covers how those two profit streams are typically multiplied differently.

Earnings by format

• Branded dealer, small store. SDE of roughly $50,000–$100,000. Brand traffic and credit program support, offset by a supply agreement that fixes your wholesale price and often mandates image upgrades on a schedule. Read the remaining term before you price it.
• Unbranded independent. SDE of roughly $60,000–$140,000. Wider fuel margin because you buy on the rack, but you carry the price-volatility risk and get no brand-driven traffic. Works best where the site already owns its local demand.
• C-store-led site with foodservice. SDE of roughly $150,000–$300,000+. Prepared food, coffee programs, and a strong beverage set carry margins fuel cannot approach. Also the most operationally demanding — this is a retail food business with pumps attached.
• Site with attached car wash or repair bays. Add roughly $30,000–$120,000 of SDE depending on format and condition. Evaluate the ancillary business on its own terms; see car wash owner income for the wash side.

The cost structure

• Credit card interchange: 6–10 cents per gallon equivalent. The largest single deduction from fuel margin, and it scales with pump price — when fuel prices rise, your card cost rises and your net margin compresses.
• Labor: 8–14% of gross profit at a clerk-staffed site, far higher with foodservice. Most sites run staffed hours the owner does not personally cover; if the seller works 60 hours a week, restate that at market wage.
• Rent or ground lease: 0–20% of gross profit. Frequently absent because the seller owns the parcel. If you are buying the business only, insert market rent before comparing to any other listing.
• Shrink and inventory loss: 1–3% of inside sales. Cigarettes and beer are the concentration points. A site with no cycle-count discipline is losing more than it reports.
• Maintenance, dispensers, and compliance: $10,000–$40,000 a year. Dispenser payment-terminal upgrades, canopy and lighting, leak-detection testing, and tank monitoring are recurring, not optional.

Worked example: a mid-volume branded site

A branded site pumps 95,000 gallons a month at a 24-cent gross margin, losing 8 cents to interchange — about $182,000 of net fuel gross profit a year. The store does $62,000 a month at 31% margin, or roughly $231,000, plus $26,000 of lottery and ATM commissions. Total gross profit: about $439,000. Against that, staffing runs $168,000, utilities $38,000, maintenance and compliance $27,000, insurance $16,000, and admin, bank fees, and supplies another $34,000 — leaving roughly $156,000. The seller owns the land and books no rent; insert a $60,000 market ground rent and the comparable, financeable figure is closer to $96,000. That is the number to price on if the real estate is not in the deal.

The earnings claims to discount

• A fuel margin quoted before card fees. The single most common overstatement in the category. Ask for cents-per-gallon net of interchange, by month, for three years.
• Gallons presented as the headline metric. Volume without margin tells you nothing about earnings. A high-gallon site in a price war can earn less than a quiet one.
• Inside sales that include lottery gross rather than commission. You keep the commission, typically around 5–6% of ticket sales. Booking the full ticket value as revenue inflates both sales and apparent margin.
• No rent line on an owner-occupied parcel. Same distortion as every real-estate-heavy small business. Normalize it first.
• Silence on tank age and environmental records. Underground storage tanks are the category’s defining liability. No Phase I, no deal — and a Phase II if anything is flagged.

Reconcile every figure to three years of filed tax returns, to the fuel supplier’s own delivery invoices, and to the point-of-sale system’s department-level reports. Our due diligence checklist lists the documents to request, and red flags when buying a business covers what a seller’s reluctance to produce them usually means.

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