Buyer's Guide · Convenience Stores
10 ways sellers inflate a convenience store's P&L
A convenience store's P&L has traps a gas station's doesn't: lottery sales booked as revenue when only the 5 to 7% commission is real, shrinkage that never makes the books, and franchise royalties charged on gross profit that quietly vanish from the expenses. Here are the 10 most common c-store P&L tricks, and exactly how to catch each one.
A convenience store looks simple from the counter and complicated on paper: thousands of SKUs, several income streams (merchandise, tobacco, lottery, food service, ATM) each with a different margin, and a lot of cash moving through the register. That mix is exactly what makes a c-store P&L easy to shape. These are the ten places where the shaping happens, and the cross-check that catches each one.
1.Booking lottery sales as revenue
The trick: The P&L counts every lottery ticket sold as store revenue. It isn't: the store only keeps the state commission, typically 5 to 7% of lottery volume. $100,000 in tickets is roughly $5,000 to $7,000 of real income.
How to catch it: Find the lottery line and divide it by the lottery sales volume from the state lottery commission's records. If the P&L is carrying anywhere near the full ticket volume as revenue, both the revenue and the margins are fiction.
2.Ringing personal purchases through the POS
The trick: Family groceries and personal purchases get rung up as sales, quietly padding inside revenue.
How to catch it: Overall gross margin should land around 25 to 35%. Reconcile claimed sales against the distributor purchase invoices: you can't sell merchandise you never bought. A margin that drifts above the category mix's ceiling is a padding signal.
3.Shrinkage that never makes the books
The trick: Theft and spoilage quietly disappear from the P&L, making the store look tighter-run than it is.
How to catch it: Shrink at a convenience store typically runs 1 to 3% of revenue. A P&L showing none doesn't mean there isn't any; it means it's hidden. Ask for the inventory variance reports and the seller's actual shrink rate.
4.Dressing up a tobacco-dependent store
The trick: Tobacco carries thin margins (15 to 20%) and a regulatory headwind, so a store leaning hard on it gets presented as a diversified retailer.
How to catch it: Request a 3-year revenue breakdown by category. If one category (usually tobacco) is more than about 60% of revenue, you're buying concentration risk, and a declining trend in that category is the single most important line to see.
5.Making the franchise royalty disappear
The trick: The store is clearly branded, but no royalty or franchise fee appears anywhere on the P&L, which flatters the bottom line.
How to catch it: C-store royalties are charged on gross profit, not revenue. A store doing $1.5M at a 28% margin has about $420,000 of gross profit; a 7% royalty is roughly $29,000 a year that must show up as an expense. Branded store, no royalty line: ask where it's hiding, and read the franchise agreement's actual rates.
6.Running on free family labor
The trick: The counter is staffed by unpaid family, so the labor line looks tiny and the profit looks big.
How to catch it: Labor excluding the owner typically runs 8 to 15% of revenue at a c-store, higher than a gas station because everything happens inside. If the P&L is far below that, normalize to market wages before you price the deal: you will have to pay real staff.
7.Overstating the prepared-food program
The trick: Prepared food is the highest-margin category in the store (50 to 65%), which makes it the most tempting line to inflate.
How to catch it: Ask for POS-level daily sales reports for food service. Then sanity-check the blend: if food is really that big a share of sales, the store's overall gross margin should reflect it. Claimed mix and blended margin have to agree.
8.Hinting at unverifiable cash
The trick: “The register does a lot more in cash than the books show.” The wink invites you to pay for income the IRS never saw.
How to catch it: Price only what's provable. Compare the P&L to the federal tax return for the same year, and tie both to 12 months of bank deposits. If it's not documented anywhere, it doesn't exist for valuation, and unreported cash can be a liability you inherit.
9.Suspiciously round numbers in the wrong places
The trick: Sales or cost-of-goods land on the same tidy figure month after month: exactly $40,000, twelve times in a row.
How to catch it: Know which lines are allowed to be round. Fixed costs (rent, salaried wages) legitimately repeat to the dollar. Variable lines (sales, COGS) never do: weather, paydays, and seasons move them. Identical round variable numbers point to fabrication.
10.Mixing in income that won't transfer
The trick: ATM income, a sweetheart supplier rebate, or a side arrangement gets baked into the earnings, but none of it automatically survives the sale.
How to catch it: Separate transferable income from personal arrangements. ATM income (typically $200 to $500 a month) should be contractual and continuing; the lottery terminal usually belongs to the state commission, not the store; and one-time vendor rebates booked as recurring revenue are padding, not earnings.
Let BizScore catch them for you
Upload the seller's P&L, tax returns, and bank statements. BizScore reconciles all three, recomputes SDE, and flags the inflated categories and missing expenses above, each one backed by the exact document it came from.
Frequently asked
- Is lottery money revenue for a convenience store?
- Only the commission, typically 5 to 7% of ticket volume. Booking gross lottery sales as store revenue is the single biggest c-store P&L distortion: it inflates revenue massively while the real income is a small commission line.
- What's a normal shrink rate for a convenience store?
- Typically 1 to 3% of revenue. A P&L that shows no shrinkage at all usually means it's hidden in cost-of-goods or simply left off, not that the store has zero theft and spoilage.
- How are convenience-store franchise fees calculated?
- On gross profit (revenue minus cost of goods), not on revenue. Typical royalties run mid-single digits to low double digits depending on the brand and contract. A clearly branded store with no royalty expense anywhere on the P&L is a red flag.
- Can software catch this?
- The math-heavy parts, yes. BizScore reconciles the P&L against the tax returns and bank deposits, recomputes SDE, and flags category-margin mismatches like a lottery line that's really ticket volume, each backed by the document it came from.
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About this guide
BizScore is built by first-time business buyers — people who watched someone close to them lose their life savings on a deal that looked clean on a spreadsheet and fell apart in the documents the seller never volunteered. That experience is why these guides exist, and why every BizScore report cites the exact document behind each finding.
Where the numbers come from: the benchmark ranges in our guides — SDE multiples, expense ratios, typical timelines — are widely-used industry rules of thumb, cross-checked against the analytical benchmarks BizScore applies inside its reports. Dollar figures such as a ~$15,000 quality-of-earnings review or a $5,000 deal attorney are representative of what buyers typically pay, not quotes; actual costs and multiples vary by deal. We review these figures periodically — last updated July 2026.
BizScore is an information service — think of it as a Carfax for a small business — not a CPA, an attorney, or financial advice. Use it to decide where to spend your professional dollars, and bring in a qualified professional before you sign anything.
This guide is general education, not a formal business appraisal or financial, legal, or tax advice. Every deal is different. Verify against the actual documents and talk to a qualified professional before you sign anything.