Insurance Rate Data Providers Compared: Quadrant, Verisk, SERFF & More

The Insurance Rate Data Landscape

Insurance rate data is not a single market — it is a fragmented ecosystem of providers serving different needs. Carriers need competitive intelligence. Publishers need comparison content. Regulators need compliance verification. Consumers need accurate pricing information. Each of these use cases is served by different data providers with different methodologies, coverage areas, and access models.

This guide provides a factual comparison of the major insurance rate data providers, covering what each one does, who uses it, and the tradeoffs involved. The goal is not to rank them — each serves a different purpose — but to make the landscape legible for anyone evaluating their options.

Provider Comparison at a Glance

Quadrant Information Services

What it is: A private data company (founded 1991, acquired by Worklyn Partners) that collects rate filings from state regulators, models premiums for standardized driver profiles, and licenses the resulting rate sets to publishers and carriers.

Who uses it: Bankrate, NerdWallet, The Zebra, Forbes Advisor, LendingTree, ValuePenguin, US News, Insurify, and numerous insurance carriers for competitive analysis.

Strengths: Broad coverage (~20,000 rate sets across multiple lines), established industry presence, integrated products (AxcelRate, MapSight, MarketBuilder). Quadrant has been the default rate data provider for the comparison industry for over 30 years.

Limitations: Modeled premiums rather than actual filed rates. Proprietary methodology that is not publicly auditable. Update cadence that lags behind filing approval dates. Desktop-first delivery (AxcelRate .NET application) that does not align with modern API-native workflows. Recent PE acquisition introduces uncertainty about future investment and pricing.

For a deeper analysis: Quadrant Information Services Explained

Verisk / ISO

What it is: Verisk Analytics (NYSE: VRSK) is a data analytics company serving the insurance industry. Its ISO (Insurance Services Office) division produces advisory rates and loss cost data that serve as reference points for carrier pricing. Verisk also provides statistical data, actuarial analysis, and predictive modeling.

Who uses it: Primarily insurance carriers, particularly smaller and mid-size carriers that use ISO advisory rates as a starting point for their own rate development. ISO data is deeply embedded in the insurance regulatory process — many state filings reference ISO loss costs as a baseline.

Strengths: Industry-standard loss cost data, regulatory acceptance, deep actuarial expertise, comprehensive P&C coverage. ISO's statistical agent role gives it access to aggregate industry loss data that no other provider can match.

Limitations: Advisory rates and loss costs are industry aggregates, not carrier-specific competitive intelligence. They tell you what the industry average suggests rates should be — not what any specific carrier is actually charging. Not designed for consumer-facing rate comparisons or publisher use cases. Expensive enterprise licensing.

S&P Global Market Intelligence

What it is: S&P Global's insurance analytics platform aggregates statutory financial filings (Annual Statements, Quarterly Statements) that carriers file with state regulators. It provides market share data, loss ratios, premium volume, expense ratios, and other financial metrics at the company and state level.

Who uses it: Insurance company executives, investors, analysts, reinsurers, and consultants who need financial performance data rather than rate-level pricing data.

Strengths: Standardized financial data across the entire P&C industry. Good for market share analysis, financial benchmarking, and M&A due diligence. Data is based on regulatory filings (statutory reporting), providing an authoritative foundation.

Limitations: This is financial data, not rate data. S&P Global tells you that GEICO wrote $4.2 billion in California auto premium — it does not tell you what GEICO charges for a 35-year-old driver in ZIP code 90210. Not useful for rate comparisons, competitive pricing analysis, or consumer-facing applications. Quarterly reporting cadence means data is inherently backward-looking.

LexisNexis InsurQuote

What it is: LexisNexis Risk Solutions offers InsurQuote, a platform that aggregates real-time insurance quotes by connecting directly to carrier rating APIs. Unlike other providers on this list, InsurQuote produces actual quoted premiums — not modeled estimates or historical filings.

Who uses it: Insurance comparison platforms, lead generation companies, and some carriers that want real-time competitive quote data.

Strengths: Real-time quotes reflecting actual carrier pricing, including all applicable discounts, surcharges, and tier placements for a specific consumer profile. The most accurate representation of what a consumer would actually pay.

Limitations: Requires carrier API integrations, which limits coverage to participating carriers. Not all carriers make their rating APIs available through aggregation platforms. Quote data is consumer-specific and transient — it tells you what one driver would pay right now, but does not provide the underlying rate structure or historical filing context. Licensed platform with significant integration costs.

SERFF Filing Access

What it is: SERFF (System for Electronic Rates and Forms Filing) is the NAIC's platform where carriers submit rate filings to state regulators. SERFF Filing Access is the public interface for viewing these filings. It is the primary source of truth for insurance rate data in the United States — every rate change approved by state regulators is documented here.

Who uses it: Regulators, actuaries, compliance officers, data companies (including Quadrant and TrueFactor), and occasionally insurance professionals doing manual competitive research.

Strengths: Free access. Complete coverage of all P&C filings since approximately 2014. Fully transparent — the actual regulatory documents, not processed or modeled derivatives. Authoritative — this is the data that defines what carriers are legally allowed to charge.

Limitations: Filings are PDF documents containing dense actuarial tables. Extracting structured data from these PDFs requires significant technical effort — manual extraction is slow, and automated extraction requires sophisticated document processing capabilities. There is no API, no structured data format, and no built-in comparison functionality. The data is comprehensive but raw.

TrueFactor

What it is: TrueFactor processes SERFF regulatory filings into structured, queryable rate intelligence. Rather than modeling premiums for sample profiles, TrueFactor extracts the actual filed rate structures — territory factors, vehicle symbols, rate algorithms, discount tables — and makes them comparable and trackable over time.

Who uses it: Insurance carriers seeking competitive intelligence, fleet management companies needing rate validation, and consumers exploring rate data by state, carrier, and ZIP code.

Strengths: Primary-source data with full transparency to the underlying regulatory filings. Updated as filings are approved — not on an annual cycle. Preserves the granularity of filed rate structures rather than compressing them into modeled averages. Modern delivery via web platform and API. Free consumer access to rate comparisons and rate change history.

Limitations: Currently focused on personal auto insurance, with coverage expanding to additional lines. Newer entrant without Quadrant's 30+ years of publisher relationships. Enterprise API and data delivery are the primary revenue model — consumer tools are a funnel, not the core business.

Choosing the Right Data Source

The right data source depends entirely on what you need the data for:

• Publishing rate comparisons for consumers? Quadrant has been the default choice, though the limitations of modeled averages are worth considering. TrueFactor's filed-rate approach offers an alternative with more granularity and transparency.
• Carrier competitive intelligence? SERFF filings provide the most complete picture. TrueFactor and Quadrant both process these filings — TrueFactor preserving the filed structures, Quadrant modeling premiums from them.
• Financial analysis and market share? S&P Global Market Intelligence is the standard.
• Real-time quoted premiums for specific consumers? LexisNexis InsurQuote, assuming the carrier participates.
• Advisory rates and industry-aggregate loss costs? Verisk/ISO remains the industry standard.

The insurance data landscape is not a winner-take-all market. Different providers serve different purposes. But for anyone who cares about the accuracy, freshness, and transparency of rate-level competitive data, understanding the differences matters.

Explore TrueFactor's rate comparison data to see how primary-source filing data compares to published averages, or read our methodology page for details on how we process SERFF filings.

See also: Where Insurance Rate Comparisons Get Their Data | Quadrant Information Services Explained