Which US insurance carriers actually run on Guidewire PolicyCenter (2026 roster).

TL;DR

• 50+ US carriers publicly run on Guidewire PolicyCenter as of 2026, including national writers (Nationwide, American Family, Liberty Mutual, Zurich North America), regional mutuals (Donegal, EMC, Hanover, West Bend, Cincinnati, Vermont Mutual), state-farm-bureau carriers (Texas FB, Idaho FB, Mountain West FB, Kentucky FB, Southern FB), specialty writers (Westfield Specialty, AXA XL, HSB, Argo, Everest, Skyward Specialty), workers-comp specialists (CopperPoint, MEMIC, HEMIC, FCCI), and faith-based / education insurers (Brotherhood Mutual, Horace Mann, Federated, Philadelphia, Armed Forces Insurance).
• This is a working roster — Guidewire doesn't publish a single canonical customer list. We pull from press releases, All-Star Class announcements (Guidewire's annual customer recognition), and case studies on guidewire.com.
• The roster is a useful signal of platform consolidation: any vendor shipping into US P&C policy admin in 2026 is shipping into a Guidewire-dominant context.
• For competitor / alternative vendors (Duck Creek, Insurity, Majesco, EIS, OneShield, Sapiens, BriteCore, Socotra, Instec), the relevant question is whether the long tail of carriers we haven't yet documented is genuinely greenfield or already on Guidewire.

The 2026 carrier roster

Carriers below are sourced individually on the tool card for Guidewire PolicyCenter, each with primary-source URLs visible in the registry.

National + tier-1 P&C writers

• Nationwide
• American Family
• Liberty Mutual
• Zurich North America
• Hanover
• AF Group
• Sompo US
• Argo
• Everest
• HSB (Hartford Steam Boiler)

Regional mutuals + state farm bureau carriers

• Texas Farm Bureau
• Idaho Farm Bureau
• Kentucky Farm Bureau
• Southern Farm Bureau
• Mountain West Farm Bureau
• Donegal
• EMC Insurance
• West Bend Mutual
• Vermont Mutual
• Franklin Mutual
• Grinnell Mutual
• Builders Mutual
• Cincinnati Insurance
• Federated Mutual

Specialty + commercial-lines

• AXA XL
• Brotherhood Mutual
• Federated Insurance
• Heritage Insurance
• Horace Mann
• Westfield Specialty
• Philadelphia Insurance
• American Modern (Munich Re)
• FICOH (Hawaii)
• Slide Insurance
• TWIA (Texas Windstorm)
• Velocity Risk Underwriters
• Canal Insurance
• Capital Insurance Group
• FCCI Insurance
• Innovated Holdings
• Columbia Insurance Group
• United Fire Group
• Golden Bear

Workers' compensation specialists

• CopperPoint
• MEMIC (Maine Employers Mutual)
• HEMIC (Hawaii Employer Mutual)
• LWCC (Louisiana Workers Compensation)

Other

• Armed Forces Insurance
• Amerisure
• Alfa Insurance

Why no single canonical source

Guidewire's customer disclosure pattern is unusual:

• No public customer page lists every named carrier. Even guidewire.com's customers section rotates a curated subset.
• The All-Star Class announcement (a yearly recognition published as a blog post) names ~25-30 customers each year — but it's recognition, not a roster, and not all years are equally complete.
• Customer case studies on guidewire.com carry the heaviest disclosure detail per carrier but are scattered across the site.
• Press releases disclose new go-lives and major migrations; these are the strongest evidence that a carrier runs PolicyCenter in production today.

Phidea's approach: aggregate every public source into a single named-carrier list with primary-source citations. The list reflects what's been disclosed, not what's actually the case — there are likely 100+ additional US carriers running PolicyCenter that haven't been named publicly.

What the roster tells us about US P&C tech

Three structural reads:

1. Multi-line platform consolidation is real. PolicyCenter handles personal auto, homeowners, commercial multi-line, workers comp, and specialty. The same platform stitches a tier-1 national writer (Nationwide), a state farm bureau (Texas FB), a workers-comp specialist (MEMIC), and a coastal-property writer (TWIA). That's unusual breadth for a policy-admin platform.

2. Mutuals over-index in the All-Star Class. A disproportionate share of the 50+ named carriers are mutuals or state-farm-bureau carriers. The plausible reading: Guidewire's go-to-market in the mid-market mutual segment is more disclosed-friendly than the tier-1 national segment, where carriers prefer to keep tech-stack relationships private. A non-disclosed roster of large nationals likely runs alongside.

3. Workers comp has a distinct pattern. CopperPoint, MEMIC, HEMIC, and LWCC are state-affiliated or single-state-focused workers-comp writers. Guidewire's penetration of this niche is meaningful and mostly invisible from generalist coverage of the carrier-tech market.

Adjacent vendors and competitive positioning

For carriers evaluating PolicyCenter against alternatives, the comparable platforms with smaller-but-public US-carrier rosters are:

• Duck Creek Claims — 12 named US carriers including GEICO, Pacific Specialty, FCCI, West Bend, Society Insurance, Skyward Specialty, Shelter, GAINSCO, FBL Financial, Hagerty.
• Majesco — life + P&C; 8 named US carriers.
• Insurity — 8 named US carriers.
• Sapiens — global; thinner US-named-carrier disclosure.
• EIS Group, OneShield, Socotra, BriteCore, Instec — smaller named US-carrier counts but growing.

The pattern across these: PolicyCenter has roughly 5-10x the publicly-disclosed US-carrier count of any single competitor. That's not necessarily 5-10x the actual deployment count — the disclosure-disparity is partly a reporting artefact — but the public signal is consistent with PolicyCenter being the modal choice for new US P&C policy-admin deployments.

How we built this list

Phidea’s carrier × vendor matrix is built from 600+ named-carrier-deployment records across 128 tracked tools. For Guidewire PolicyCenter specifically, we sourced 50+ US carriers across:

• Guidewire's 2024 + 2025 All-Star Class announcement blog posts.
• guidewire.com customer case studies (per-carrier stories with verifiable URLs).
• BusinessWire and NewsDesk press releases announcing new go-lives.
• Trade-press coverage in Carrier Management, Digital Insurance, and Insurance Journal.

Every carrier on the matrix card for Guidewire PolicyCenter has a primary-source URL. We update the list as new go-lives are publicly announced.

What's not on this list

Three categories of carrier deployment that exist but aren't named here:

• Non-disclosed deployments at large nationals. Likely 30-50 additional carriers, all of whom either don't reference their tech stack publicly or have specific NDAs covering Guidewire.
• In-flight migrations not yet announced. Carriers in the early implementation phase don't publicise until the deployment is operational.
• International deployments. This roster is US-specific; Guidewire's UK, EU, Asia-Pacific carrier lists are separate.

If you're aware of a US carrier on PolicyCenter that's not in this list (and the relationship has been disclosed publicly somewhere), the Guidewire PolicyCenter tool card is where corrections land.