How TrueFactor's Rate Data Works

Data Source: SERFF Regulatory Filings

Every number on TrueFactor traces back to a rate filing submitted through SERFF — the System for Electronic Rates and Forms Filing — operated by the National Association of Insurance Commissioners (NAIC). When an insurance carrier wants to change its rates in any state, it files the complete rate structure with that state's Department of Insurance through SERFF. These filings are public regulatory records.

SERFF filings contain the actual pricing components that determine consumer premiums: base rates for each coverage line, territorial rating factors for every ZIP code, vehicle symbol tables, driver classification factors, discount and surcharge schedules, increased limit factors, and the rating algorithm that combines them. This is the same data that carriers use internally to price policies — submitted to regulators as part of the rate approval process.

For a detailed explanation of SERFF filings and what they contain, see our guide: How SERFF Rate Filings Work.

Data Collection

TrueFactor collects rate filing data directly from state Department of Insurance public records and SERFF Filing Access. We monitor filing activity across all 50 states and process new filings as they are approved (in prior approval states) or filed (in file-and-use states).

Our collection covers personal auto insurance filings from major carriers. The set of monitored carriers is expanding continuously, with current coverage including the largest writers by premium volume in each state — carriers like GEICO, State Farm, Progressive, Allstate, USAA, Liberty Mutual, Farmers, Nationwide, and regional carriers that hold significant market share in specific states.

Data Processing

Raw SERFF filings are PDF documents — often 50 to 500 pages of actuarial tables, factor schedules, and rating formulas. Converting these documents into structured, queryable data is the core technical challenge.

TrueFactor uses AI-powered document processing to extract rate structures from filing PDFs. The extraction pipeline identifies and parses:

• Base rate tables by coverage line (Bodily Injury, Property Damage, Comprehensive, Collision, Uninsured Motorist)
• Territorial rating factors mapped to ZIP codes
• Vehicle symbol assignments by make, model, and year
• Driver classification factor tables
• Discount and surcharge schedules
• Overall rate change percentages and effective dates

Extracted data is validated through multiple methods: cross-referencing against the carrier's rating sample (a worked example included in most filings), comparison with prior filings to verify continuity, and validation against live carrier quotes where available. Our target is 95%+ parse confidence across all extracted data points.

Coverage

TrueFactor currently focuses on personal auto insurance — the largest personal lines segment by premium volume and the line most frequently searched by consumers. Our coverage includes:

• States: All 50 states, with filing data going back to 2019 for most carriers and states.
• Carriers: Major national carriers and significant regional carriers, representing the majority of personal auto premium written in each state.
• Data points: Over 3.2 million individual rate data points across carrier, state, ZIP code, coverage line, and time period dimensions.
• ZIP codes: ZIP-code-level territorial factors for states where we have extracted territory tables — including granular coverage across California (2,593+ ZIP codes), Texas, Florida, and other major markets.

Coverage is expanding to additional carriers, additional lines of business (homeowners, renters), and deeper historical data.

Data Freshness

Unlike data providers that update on annual or semi-annual cycles, TrueFactor processes filings as they are approved by state regulators. This means rate changes appear in our data within days or weeks of regulatory approval — not months later.

The practical difference: when GEICO files a 6.9% rate increase in California and it is approved by the CDI, that change appears in TrueFactor's data as soon as we process the approved filing. On comparison sites using Quadrant data, the same change might not appear for months, depending on Quadrant's update cycle.

Each data point in TrueFactor is tagged with the filing ID, filing date, approval date, and effective date — so you always know exactly which regulatory filing a number comes from and when it took effect.

Transparency

Every number on TrueFactor is traceable to a specific public regulatory filing. This is a fundamental difference from proprietary data providers whose methodology is opaque. Our approach:

• Rate data is sourced exclusively from public regulatory filings — no proprietary modeling, no estimated projections.
• Filing references (carrier, state, filing ID, dates) are preserved and available for verification.
• Rate change calculations are derived directly from consecutive filings — the before-and-after comparison of filed rate structures.
• The underlying SERFF filings are public records that anyone can access independently to verify our data.

We believe rate data should be auditable. If a number on TrueFactor does not match what you see in the regulatory filing, we want to know about it.

What We Don't Do

Clarity about what TrueFactor does not do is as important as understanding what we do:

• We do not model hypothetical premiums for sample profiles. We present the actual filed rate structures — base rates, factors, and algorithms — as they appear in regulatory filings. When we show premiums, they are calculated using the filed rating algorithm with specified inputs, not estimated from averaged data.
• We do not provide insurance quotes. TrueFactor is a rate intelligence platform, not an insurance marketplace. The rates we show are filed rates — the rates carriers have submitted to regulators. Your actual premium will depend on your specific underwriting characteristics and the carrier's real-time rating system.
• We do not sell leads or participate in affiliate marketing. Our revenue comes from enterprise data licensing (API and flat file delivery), not from referral fees or advertising.
• We do not guarantee rate accuracy for individual consumers. Filed rates represent the carrier's approved rate structure, but individual premiums are subject to underwriting decisions, tier placement, and factors that may not be fully captured in the public filing.