Buying a Car As A Business: Due Diligence Checklist & Red Flags (2026)

Red flag: MRR is flat or declining over the last 6 months, and churn exceeds 3.5% monthly without a clear seasonal pattern, indicating client dissatisfaction or a commoditized offer.

Ask: Provide a 24-month breakdown of MRR by month, showing new clients, churned clients, and net change. What percentage of clients are on monthly maintenance plans vs. one-time setup fees?

Red flag: CAC payback exceeds 12 months, or CAC has doubled year-over-year with no corresponding increase in lifetime value (LTV), signaling deteriorating unit economics.

Ask: How do you calculate CAC by channel (Google Ads, organic, referral)? What is the average time to recover CAC from a new client’s gross margin, and has it been increasing?

Red flag: Top 3 clients represent more than 30% of recurring revenue, and none are under long-term contracts. LTV:CAC ratio below 3:1 suggests the business is not sustainably scalable.

Ask: Show the top 10 clients by revenue. What percentage of total recurring revenue do the top 3 represent? How do you compute LTV, and what assumptions do you use for churn and discount rate?

Red flag: Chargeback ratio exceeds 0.9% of transactions, or you find a pattern of complaints about title errors that required refunds, indicating weak operational controls.

Ask: Pull the last 36 months of refund requests, credit card chargebacks, and any formal complaints to state consumer protection agencies. Are there seasonal spikes or recurring underlying issues?

Red flag: Seller cannot produce clean tax returns or admits to aggressive personal vehicle write-offs through the same entity, exposing you to audit risk and credibility issues with clients.

Ask: Provide filed tax returns and sales tax returns for the last three years, along with proof of payroll tax deposits. Are the entity’s own business vehicle deductions in order?

Red flag: Onboarding is almost entirely manual, relying on one staff member’s memory. Average time exceeds 15 business days because of rework or incomplete client documents.

Ask: Walk me through exactly how a client is onboarded from lead to first registration. How many handoffs, which software tools, and what is the average calendar days to completing the first title transfer?

Red flag: Error rate above 4% of monthly filings, or any occurrence where a client received a ticket because the business failed to register the vehicle on time, opening liability.

Ask: Provide the last 12 months of title-error logs. How many filings required correction, and what was the root cause? What is the cost per error in staff time and DMV penalties?

Red flag: Only the seller holds the required notary or processor license, and no other employee is cross-trained. The business can’t operate legally without the seller for even one day.

Ask: Which employees hold notary commissions, DMV third-party processor certifications, or accounting credentials? Are there written procedures for every routine filing scenario across multiple states?

Red flag: Client records are stored in a shared Google Drive or unencrypted local hard drive with no access controls. A breach would trigger state data-breach notification laws and potential lawsuits.

Ask: What CRM and document management system stores client SSNs, driver’s license scans, and title documents? Is data encrypted at rest and in transit? Show me the cybersecurity policy and last penetration test.

Red flag: Average email response time exceeds 24 business hours, or online reviews complain about being unable to reach anyone during critical DMV deadlines, indicating understaffing.

Ask: Share phone system reports and email support ticket metrics for the last quarter. What is the average first-response time, resolution time, and service-level agreement (SLA) promise to clients?

Red flag: Core keyword volume has declined more than 20% year-over-year, and there is no offsetting growth in adjacent terms like ‘LLC car deduction,’ suggesting the niche is cooling.

Ask: Using Google Keyword Planner and Search Console, show exact-match search volume trends for ‘buying a car as a business’ and related long-tail terms over the last 3 years. Is demand growing or shrinking?

Red flag: More than 70% of new clients come from a single channel (e.g., Google Ads) and cost-per-conversion on that channel is volatile and outside your control. A small algorithm change could cripple growth.

Ask: For the last 12 months, what percentage of new paying clients came from Google organic, Google paid, social media, CPA/accountant referrals, dealership partnerships, and all other? How has the mix shifted?

Red flag: Several well-funded competitors with CPA staff are undercutting price by 30% and have higher review volumes. The business responds by discounting, eroding margins without a clear moat.

Ask: Who are your top 3 direct competitors, and how do your service, pricing, and Google reviews compare? Show a win/loss log for the last 6 months: why did you lose deals?

Red flag: Over 60% of new revenue is concentrated in the January–March tax season, with negative operating cash flow in summer months, making post-close liquidity for the buyer extremely tight.

Ask: Plot new client starts by month for 24 months. What percentage of annual revenue is booked between December and March? How does this affect cash flow and staffing needs?

Red flag: ARPU is stagnant at a flat monthly fee for years, and attempts to introduce add-ons resulted in client complaints, indicating the client base views the service as purely transactional.

Ask: Show ARPU trend over last 24 months. Have you successfully upsold any ancillary services (e.g., annual compliance reviews, multi-vehicle packages, insurance referral commissions)? If so, what is the attach rate?

Red flag: Domain registration is in the seller’s personal name and email, and there is no written assignment or transfer history. The seller cannot prove the business entity owns the domain.

Ask: Is the business an LLC, S-Corp, or sole proprietorship? Which assets does the entity own (domain, phone number, CRM data, trademarks), and are they clearly assigned in the operating agreement?

Red flag: No signed agreement exists for a significant portion of clients, or the contract includes guarantees of specific tax deductions, exposing the business post-close to misrepresentation claims.

Ask: Provide a copy of the standard client contract. Does it include a clear disclaimer that the business is not providing legal or tax advice? Are there mandatory arbitration and limitation-of-liability clauses?

Red flag: A key state license has lapsed, or the business operates in a state that prohibits third-party titling for compensation without a dealer or attorney license, making the core service illegal there.

Ask: In which states does the business file titles, and what specific state licenses or registrations (e.g., a vehicle registration service license, notary public, or business license) are required? Show current, active certificates for each.

Red flag: All partnership agreements are verbal or contain a clause that automatically terminates upon sale. Seller is unwilling to introduce you to partners until after the deal closes.

Ask: Show all signed agreements with dealership groups, CPA firms, or affiliate partners. Do the agreements contain a ‘change of control’ clause requiring consent? Will you facilitate an introduction and consent process prior to close?

Red flag: No trademark filed, and seller plans to keep a ‘consulting’ practice that effectively serves the same customer type, or the seller’s spouse runs a competing tax-filing service that cross-refers.

Ask: Is the business name and logo trademarked? Will you sign a 3-year, nationwide non-compete and non-solicit as part of the sale? Is there any risk the seller’s spouse or relative operates a similar service?

Red flag: Seller insists on a silent transition with no direct introduction, expecting clients to stay based on automated billing. Past data shows a 25% churn spike in the first 60 days after any ownership change.

Ask: How will we jointly announce the ownership change, and on what timeline? Will you record a warm introduction video and send a co-branded email? What is the expected retention rate based on past transitions?

Red flag: No employee is willing to commit; two critical staff members have given verbal notice and plan to leave within 30 days of closing, taking irreplaceable institutional knowledge.

Ask: Are key employees (especially the senior title processor and client success lead) willing to sign 12-month employment agreements contingent on the sale? What are their current salaries and any deferred compensation promises?

Red flag: Seller uses a single personal login for all digital assets and is unwilling to grant admin access until after final payment, preventing you from verifying historical campaign data.

Ask: Outline the exact steps to transfer Google Analytics, Google Ads manager account, Search Console, domain registration, CRM, phone number, and social media profiles. Will you provide full admin access during due diligence?

Red flag: Seller offers only ‘email support for 30 days’ with no structured curriculum. Reviews indicate clients call the seller directly for tax advice even after the sale, undermining your authority.

Ask: How many hours of in-person or video training will you provide post-close over what number of weeks? Specifically, will you train on the tax logic, state-specific DMV nuances, and client handling scripts?

Red flag: Seller insists on 100% cash at close with zero holdback, despite a client base with annual contracts only and no historical retention guarantee. This transfers all churn risk to the buyer.

Ask: Given the reliance on client retention, are you open to a holdback or earnout based on MRR retained after 12 months? What percentage of the purchase price are you willing to defer subject to retention targets?