Before you sign, verify fleet condition, DOT safety ratings, customer concentration, and driver compliance to avoid costly surprises after close.
Acquiring a lower middle market trucking company involves risks that go well beyond standard business due diligence. Hidden fleet maintenance costs, poor CSA scores, concentrated shipper relationships, and non-compliant driver files can turn a promising deal into a cash drain within months of closing. This checklist walks buyers through the five critical due diligence categories specific to small carrier acquisitions in the $1M–$5M revenue range, helping you assess true business value, identify deal-killers early, and negotiate from a position of informed confidence.
Evaluate the age, condition, and true replacement cost of all revenue-generating equipment before finalizing your offer.
Obtain full fleet inventory with VINs, mileage, year, and current market valuations for all trucks and trailers.
Equipment is the core asset; inaccurate inventory inflates purchase price and hides near-term capex needs.
Red flag: Seller cannot produce titles or lists vehicles with liens not disclosed in the purchase agreement.
Review maintenance logs and service records for each vehicle over the past 24 months.
Deferred maintenance indicates hidden costs you will inherit immediately after close.
Red flag: Logs are missing, incomplete, or show patterns of skipped preventive maintenance intervals.
Commission independent third-party mechanical inspections on all trucks above 500,000 miles.
High-mileage trucks may require engine overhauls or full replacement within 12–18 months of acquisition.
Red flag: Seller resists independent inspections or restricts access to specific vehicles in the fleet.
Model a 3-year capex schedule projecting replacement and major repair costs for the entire fleet.
Unmodeled capex destroys post-acquisition cash flow and distorts your effective purchase multiple.
Red flag: Projected fleet replacement costs exceed 20% of purchase price within the first 24 months post-close.
Assess the carrier's safety record, CSA scores, and open violations to gauge regulatory liability and insurability.
Pull the carrier's FMCSA Safety Measurement System (SMS) scores across all BASICs categories.
Elevated CSA scores signal systemic safety issues and can trigger federal interventions post-close.
Red flag: Any BASIC category is in alert status or the carrier has received a Warning Letter from FMCSA.
Verify current DOT safety rating and review the full history of roadside inspections and violations.
A conditional or unsatisfactory DOT rating makes the carrier nearly uninsurable and unlendable.
Red flag: Carrier holds a conditional or unsatisfactory DOT safety rating with no active remediation plan.
Review all accident reports, cargo claims, and litigation filed against the carrier in the past 5 years.
Unresolved claims and litigation create post-close liability exposure not reflected in current financials.
Red flag: Multiple at-fault accidents, pending lawsuits, or unresolved cargo claims exceed $50,000 in aggregate.
Confirm DOT operating authority is active, transferable, and free of pending revocations or suspensions.
Interrupted operating authority halts revenue immediately and can void existing shipper contracts.
Red flag: Operating authority has lapsed, is under review, or carries conditions that restrict freight lanes.
Analyze the shipper base, freight lane consistency, and contract terms to assess revenue stability post-close.
Request a full customer revenue report for the past 36 months broken down by shipper and lane.
Revenue concentration in one or two shippers creates catastrophic downside risk if they churn post-close.
Red flag: A single customer represents more than 30% of total revenue with no long-term contract in place.
Review all active shipper contracts for assignment clauses, termination rights, and rate structures.
Contracts with change-of-control clauses may allow shippers to exit immediately upon acquisition.
Red flag: Key shipper contracts contain change-of-control provisions with no assignment consent secured.
Interview top three shippers to assess relationship strength and intent to continue post-acquisition.
Shipper loyalty often rests with the owner personally, not the business entity being sold.
Red flag: Shippers are unaware of the pending sale or express reluctance to continue under new ownership.
Analyze freight lane consistency, seasonal patterns, and spot versus contract revenue mix.
High spot market dependency creates volatile revenue that is difficult to underwrite in your acquisition model.
Red flag: More than 40% of trailing revenue is derived from spot loads with no contracted freight baseline.
Audit driver compliance, turnover trends, and employment structure to evaluate operational continuity risk.
Review complete driver qualification files including CDL records, MVR checks, and drug test logs.
Non-compliant driver files expose you to FMCSA penalties and invalidate insurance coverage.
Red flag: Driver files are incomplete, MVRs are outdated, or pre-employment drug screens are missing.
Analyze driver turnover rates over the past 24 months and document reasons for departures.
High turnover signals systemic compensation or culture issues that will persist under new ownership.
Red flag: Annual driver turnover exceeds 50% or multiple drivers have given notice upon hearing of the sale.
Clarify employment classification for all drivers — W-2 employee versus independent contractor (1099).
Misclassified drivers create significant tax liability, benefits exposure, and regulatory penalties post-close.
Red flag: Drivers classified as independent contractors fail IRS or DOL economic reality tests for true independence.
Determine whether any drivers are unionized or if there are active labor grievances or organizing efforts.
Union contracts or organizing activity can materially increase labor costs and restrict operational flexibility.
Red flag: Active union organizing, pending grievances, or undisclosed collective bargaining agreements exist.
Validate true business cash flow by scrutinizing financials, owner add-backs, and fuel and insurance cost structures.
Obtain 3 years of CPA-compiled or reviewed financials plus trailing 12-month management statements.
Incomplete or cash-basis records obscure true profitability and make SBA underwriting impossible.
Red flag: Only tax returns are available with no supporting financials, or returns show significant unexplained losses.
Identify and document all owner add-backs including personal vehicle expenses, family payroll, and perks.
Inflated add-backs overstate EBITDA and result in overpaying on a multiple basis.
Red flag: Add-backs exceed 15% of stated EBITDA without clear documentation and third-party verification.
Analyze fuel surcharge pass-through mechanisms and verify they are embedded in shipper contracts.
Carriers absorbing fuel costs without pass-through mechanisms face severe margin compression during price spikes.
Red flag: No fuel surcharge mechanism exists and fuel represents more than 30% of total operating expenses.
Review insurance policies, workers' compensation claims history, and renewal terms with current broker.
Trucking insurance is highly claims-sensitive; a poor loss history can make coverage unaffordable post-close.
Red flag: Loss ratios above 65%, multiple large cargo claims, or insurer non-renewal notices in the past 3 years.
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DOT safety rating and CSA scores are the single most critical items. A conditional or unsatisfactory DOT rating can make the carrier uninsurable and ineligible for SBA financing, effectively making the business impossible to operate or fund post-close. Pull FMCSA SMS data on every carrier you evaluate before investing time in any other diligence.
Commission independent third-party mechanical inspections on all trucks, especially those over 500,000 miles, and build a 3-year capex model projecting engine overhauls and full replacements. If near-term capex exceeds 20% of the purchase price within 24 months, renegotiate the deal price downward or require the seller to address deferred maintenance before close.
Review all shipper contracts for change-of-control and assignment clauses, then conduct direct conversations with the top three shippers before close. Confirm they are aware of the transaction and willing to continue under new ownership. Consider structuring an earnout tied to freight revenue retention over 12–24 months post-close to align seller incentives with relationship continuity.
Yes, trucking company acquisitions are SBA 7(a) eligible. Lenders will require 3 years of CPA-compiled or reviewed financial statements, a complete fleet inventory with valuations, and a clean DOT safety record. Tax returns alone are typically insufficient for underwriting. Ensure the seller has separated personal expenses from business financials and documented all owner add-backs clearly before approaching SBA lenders.
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