Key Highlights

  • Unbundled Business auto coverage—where Liability, collision, and comprehensive policies are split—has seen premiums rise 12% in 2026, per Amwins experts.
  • Retailers now negotiate directly with insurers like Nationwide (Nasdaq: NTRS) to soften hard-market sticker shock for clients.
  • Bundling commercial vehicle insurance with general liability can cut costs by up to 20%, according to RI Insurance Group.
  • The Business Auto Coverage Form (BACF) remains the standard template, though insurers increasingly tailor endorsements.
  • Harvard’s Risk Management &Amp; Audit Services offers pre-negotiated terms for compliant fleet insurance via its affiliated programs.

The rising cost of unbundled business auto coverage

Unbundled business auto coverage—where commercial auto liability, collision, and comprehensive policies are purchased separately—has emerged as a pain point for mid-sized enterprises in 2026. Industry data from Amwins Group, a specialist wholesale broker, shows that standalone commercial auto premiums have climbed 12% year-over-year, outpacing broader property-and-casualty Inflation of 7.8%. The divergence reflects insurers’ heightened exposure to repair costs, litigation trends, and Underwriting losses in the segment; collision claims alone have risen 9% in frequency since 2024, driven by expensive electric vehicle parts and labor shortages in collision repair shops. Meanwhile, the Business Auto Coverage Form (BACF)—the industry standard template used by 85% of U.S. insurers—has failed to keep pace with these cost pressures, leaving gaps in coverage that insureds often discover only after a claim.

Whilst the hard market has eroded pricing power for buyers, it has also created opportunities for sophisticated procurement strategies. Companies like Nationwide (NASDAQ: NTRS) and Travelers Companies (NYSE: TRV) have responded by introducing tiered underwriting programs that reward fleets with telematics-based safety scores or multi-year claims histories. Yet the very fragmentation of unbundled policies complicates risk assessment: insurers often price liability, physical damage, and hired-non-owned auto exposures independently, leading to misaligned incentives and coverage overlaps. Harvard’s Risk Management & Audit Services has attempted to mitigate this via pre-negotiated master programs for its affiliated renters and fleet operators, though uptake remains limited outside niche sectors.

Why bundling is regaining favor

The pendulum is swinging back toward bundled coverage as a hedge against Volatility. Data from RI Insurance Group indicates that businesses combining commercial auto with general liability, workers’ compensation, or umbrella policies can secure discounts of 15–20% relative to unbundled equivalents. The rationale is twofold: insurers gain broader visibility into a client’s risk profile, while policyholders benefit from simplified administration and reduced premium leakage from gaps in coverage. Nationwide’s commercial auto division, for instance, now offers a “fleet protection package” that bundles liability limits with collision waivers and hired-auto endorsements for clients with at least five vehicles. The approach mirrors broader trends in commercial insurance, where 62% of mid-market buyers now opt for multi-line bundles—up from 51% in 2021, per a 2026 survey by the Insurance Information Institute (III).

Yet bundling is not a panacea. Insurers like Amwins warn that poorly structured bundles can obscure underlying pricing inefficiencies—particularly when carriers layer administrative fees or restrict endorsements. Retail insurance Brokers, who intermediate between buyers and underwriters, have thus become critical in negotiating favorable terms. By aggregating quotes across carriers and leveraging Volume discounts, brokers can offset up to 8% of the hard-market premium increases that unbundled buyers face. The dynamic underscores the growing role of intermediaries in an era of fragmented risk transfer.

The role of the Business Auto Coverage Form in pricing

At the heart of unbundled commercial auto underwriting lies the Business Auto Coverage Form (BACF), a 25-page template published by ISO (a Verisk Analytics (NASDAQ: VRSK) Subsidiary) that standardizes how insurers define coverages, exclusions, and limits. While the BACF provides a common language for liability and physical damage exposures, its rigidity has become a liability in a market where vehicle technology and usage patterns evolve rapidly. For example, the rise of ride-sharing and delivery gig work has prompted insurers to add endorsements for “non-owned autos” or “contingent liability,” yet these are often priced as separate line items—defeating the purpose of standardization.

The form’s limitations are most acute for fleets operating electric vehicles (EVs). Insurers are grappling with EV-specific risks—such as battery degradation claims or specialized repair networks—yet the BACF lacks explicit provisions for these scenarios. Travelers Companies (NYSE: TRV) has responded by developing proprietary EV endorsements, but this further fragments the market and complicates price comparisons for unbundled buyers. Industry analysts at the Insurance Information Institute (III) note that while the BACF remains the default, insurers are increasingly supplementing it with manuscript endorsements, creating a patchwork of coverage that undermines the form’s original intent.

Negotiation tactics for unbundled buyers

For businesses determined to pursue unbundled coverage—whether for tax optimization, risk specialization, or regulatory reasons—experts recommend a three-pronged approach: benchmarking, bundling Leverage, and claims-driven discounts. Harvard’s Risk Management & Audit Services, for instance, provides benchmarking tools that compare a fleet’s loss ratios against peers in its sector, enabling targeted negotiations with underwriters.

Yet the most potent lever may be the claims history itself. Insurers like Nationwide (NASDAQ: NTRS) now tie renewal pricing to a fleet’s three-year claims frequency, offering discounts of up to 15% for those with no at-fault incidents. The caveat? A single large loss can erase years of savings, underscoring the importance of risk mitigation. Retail brokers play a pivotal role here, acting as intermediaries to highlight safety initiatives—such as dashcam adoption or driver scorecards—that might not be visible to underwriters. The strategy reflects a broader shift in commercial auto underwriting: from passive pricing to active risk management.

The outlook for commercial auto insurance in a fragmented market

Looking ahead, the commercial auto insurance market appears poised for further bifurcation. On one side, large fleets with sophisticated risk management programs will continue to unbundle coverage, leveraging data and scale to secure favorable terms. On the other, small and mid-sized enterprises will gravitate toward bundles as a means of cost control and simplicity. The divergence is already evident in underwriting appetites: while Nationwide and Travelers (NYSE: TRV) are expanding their fleet programs, regional carriers and surplus lines insurers are filling gaps for niche risks—such as high-mileage delivery vans or specialized construction equipment—at higher price points.

Regulatory scrutiny is also intensifying. State insurance departments in California, Texas, and Florida have launched probes into commercial auto pricing practices, particularly around telematics-based underwriting and the use of Credit scores in rating. The investigations risk delaying rate filings and adding administrative costs, which could further tighten underwriting cycles. Meanwhile, the rise of autonomous vehicle testing fleets—such as those operated by Waymo (NASDAQ: GOOGL) or Cruise (a GM (NYSE: GM) subsidiary)—hints at longer-term disruptions to traditional auto insurance models, though mass-market adoption remains years away.