Buying a Taco Truck: Due Diligence Checklist & Red Flags (2026)

Red flag: Sales logs that don't reconcile with food-purchase records, bank deposits, or POS reports; large, unexplained spikes in revenue.

Ask: Can you provide daily sales logs for the last 12 months and walk me through how cash is counted, recorded, and deposited at the end of each shift?

Red flag: Tax returns show far less net income than the SDE claim on the P&L; large personal expenses run through the business.

Ask: Will you share three years of complete business tax returns and explain every add-back you're claiming to arrive at Sellers Discretionary Earnings?

Red flag: Food cost running above 35-40% of sales without a clear reason, or invoices that don't match menu volumes.

Ask: What has your average monthly food cost percentage been over the last year, and can I review supplier invoices to verify?

Red flag: Fees that suddenly jump or that are about to expire without a renewal path in the buyer's name.

Ask: Show me the last 12 months of commissary kitchen receipts, health permit fees, and any recurring event/festival fees—and what are the terms for renewal or transfer?

Red flag: Repair costs consistently high or erratic, indicating an unreliable vehicle; no maintenance logs kept.

Ask: Can I see a log of all mechanical and equipment repairs for the truck, generator, and kitchen appliances for the last two years, and the associated receipts?

Red flag: Engine or generator needing a rebuild, high mileage (>150k on a gas chassis), or failed emission tests.

Ask: What is the year, make, model, mileage of the truck, and when was the last major service on the engine, transmission, and food-service generator?

Red flag: Griddle, fryer, or refrigeration units past their service life, with frequent breakdowns; no records of hood vent cleaning or fire suppression certifications.

Ask: Provide the purchase date, service history, and next-scheduled maintenance for every major on-board appliance—and when was the hood and fire suppression system last inspected and tagged?

Red flag: Pattern of repeat or critical violations; a current 'B' or 'C' letter grade posted; unresolved pest or temperature issues.

Ask: May I review the last 3 years of health department inspection reports and see any plan-correction letters you received?

Red flag: Agreement is non-transferable or the commissary is unwilling to accept a new operator, or the fee is set to rise steeply.

Ask: Is the commissary license in the business's name and explicitly assignable, and will you introduce me to the commissary manager before closing?

Red flag: Cook is planning to leave immediately after sale, no one else knows the recipes, or all labor is paid under the table.

Ask: Who are the key employees, are they W-2 or 1099, and will each of them commit to staying on for at least 90 days after the sale in writing?

Red flag: Best lunch spot is a handshake deal; primary parking spot is at risk because the property is being sold; event bookings are verbal only.

Ask: For your three most profitable locations, show me the written agreements, parking permits, or event contracts, and what is the contract period and renewal process?

Red flag: Yelp or Google rating below 4.0 with a pattern of recent negative reviews mentioning food quality or cleanliness; social media followers are low or inactive.

Ask: What is the average star rating across review platforms, how many followers do you have on Instagram/Facebook, and can I see the last month of direct-message and comment engagement?

Red flag: Three other taco trucks operate on the same block or same event rotation, indicating a price war or oversaturation.

Ask: Map out where your direct competitors serve, and tell me how you differentiate—what percentage of your customers are repeat, and why do they choose you?

Red flag: Business name and logo are not trademarked, or the seller has used a name that infringes on another registered mark.

Ask: Do you own a registered trademark or a state-level DBA for the truck's name and logo, and will all rights transfer to the buyer?

Red flag: Permits are in the seller's personal name, not the business, and the local health department requires a new owner to start from scratch.

Ask: Will the city health department and the local vending authority transfer the existing permits and grades to a new owner without a significant gap in operations, and what is the exact process?

Red flag: Lease explicitly forbids assignment or sublease; commissary demands a new long-term lease at a higher rate for a new operator.

Ask: Is the commissary lease fully assignable to a new business entity, and will the terms—including rent and prep-hour schedule—remain the same for at least 12 months?

Red flag: Title shows a loan payoff amount larger than the truck's value, or there is an undisclosed mechanic's lien or fleet-lease obligation.

Ask: Is the truck's title free and clear of all liens, and can you provide a recent Carfax/vehicle history report and a clear title before closing?

Red flag: Inadequate commercial auto and general liability coverage; a history of claims that will spike premiums for a new owner.

Ask: What are the current coverage limits for auto liability, general liability, and workers' comp, and can the insurer confirm the policy is transferable with a clean loss-run history?

Red flag: Outstanding lawsuits, including slip-and-fall claims at serving locations, or the LLC is not in good standing with the state.

Ask: Are there any past or pending lawsuits against the business, and will you provide a certificate of good standing for the selling entity?

Red flag: Seller refuses to offer any meaningful training or wants to stay less than two weeks.

Ask: Will you commit to at least four weeks of full-time on-site training, including introducing me to regular customers and event organizers?

Red flag: No plan to announce the sale to key contacts; seller intends to start a competing concept nearby.

Ask: How will you formally introduce the new owner to office managers, security guards, and event coordinators at each regular stop, and will you sign a non-compete for a reasonable radius?

Red flag: Recipes exist only in the cook's head; spice blends are a secret that seller won't share.

Ask: Can you provide a written recipe book with exact measurements for your ten best-selling items, and will you train me or my cook on prep procedures before close?

Red flag: Food-sourcing relationships are personal accounts that will close when the seller leaves, causing immediate supply disruptions.

Ask: Will you introduce me to your meat, produce, and packaging suppliers, and can we get letters that all accounts will continue under our new entity?