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One Inc vs OneShield Software — Policy administration for US insurance, 2026.

One Inc (16 named carriers) and OneShield Software (5 named carriers) both sit at the policy administration layer. Zero customer overlap in the public roster — they are addressing different segments of the same stack layer.

Last verified 2026-04-22 · methodology

TL;DR

  • One Inc has 16 publicly-named carrier deployments; OneShield Software has 5. Both at the policy administration layer.
  • Zero customer overlap in the public roster. One Inc and OneShield Software are addressing different carriers within the same stack layer.
  • Both classified modern on Phidea's generation axis.
  • Both private-equity ownership.
  • Analyst coverage: 1 firm cover both, 0 only One Inc, 0 only OneShield Software.

Customer overlap

BucketCount
Named on One Inc only16
Named on OneShield Software only5
Named on both0
of which US-named on at least one side0

Only on One Inc

  • Arbella Insurance Group (US)
  • GoAuto Insurance (US)
  • Mutual Benefit Group (US)
  • The Philadelphia Contributionship (US)
  • MAPFRE Insurance (US)
  • Mountain West Farm Bureau (US)
  • Penn National Insurance (US)
  • Virginia Farm Bureau Insurance (US)
  • Columbia Insurance Group (US)
  • Brethren Mutual (US)
  • Grange Insurance (US)
  • National Indemnity Company (US)
  • …and 4 more on the vendor card.

Only on OneShield Software

  • Privilege Underwriters Reciprocal Exchange (PURE) (US)
  • HAI Group (US)
  • Accident Insurance Company (AIC) (US)
  • Forrest T. Jones & Company (US)
  • Falcon Risk Services (US)

Counts derived from 22sourced carrier-deployment entries across both vendor cards. Aggregate-only statements (e.g. “16 of the top 20”) excluded.

Stack position

One Inc
Generation
modern
Stack layer
Policy administration
Founded
2012
Lines
auto, home, commercial, life
Replaces
paper check disbursement, generic payment gateway
OneShield Software
Generation
modern
Stack layer
Policy administration
Founded
1999
Lines
auto, home, commercial, workers-comp, specialty

Ownership and corporate context

One Inc
Type
private-equity
Parent
Great Hill Partners (with Nordic Capital co-investor since 2024)
Acquired
2020

Source: One Inc

OneShield Software
Type
private-equity
Parent
Parker-led search fund; Bain Capital Credit and Pacific Lake Partners anchor investors
Acquired
2020

Source: Bain Capital

Carrier-segment specialization

One Inc — geographic split

  • US
    16

OneShield Software — geographic split

  • US
    5

Analyst coverage differential

Both covered by
  • Celent · One Inc (2025: Behind the Wheel of Trust: How Auto Claims Shape Customer Loyalty (One Inc ClaimsPay commissioned Celent research)) · OneShield Software (2024: OneShield Software — vendor directory and VendorMatch solutions)

Recent news (last 12 months)

No news items in the last 12 months for either tool.

Sourced limitations

One Inc
  • One Inc is a US-only insurance payments network; there is no documented European or UK carrier footprint, and pricing/terms are not publicly disclosed — carriers procure via direct sales rather than self-serve onboarding that generalist processors (Stripe, Adyen) offer.
    Source: One Inc
  • The platform depends heavily on banking and wallet partners (J.P. Morgan Payments, U.S. Bank, PayPal/Venmo, Apple Pay, Google Pay) for rails; carriers adopting One Inc inherit this dependency stack rather than running direct processor relationships.
    Source: Business Wire
OneShield Software
  • Smaller systems-integrator ecosystem than the tier-1 P&C cores. The implementation-partner bench for OneShield is narrower than the Guidewire and Duck Creek ecosystems; carriers needing specific tier-1 reinsurance or global-treaty surfaces will typically still choose Guidewire.
    Source: Celent
  • Customer mix skews toward MGAs, specialty carriers, and workers' comp writers by design. The named roster does not include top-10 national P&C carriers; OneShield Market Solutions specifically targets MGAs with sub-$100M GWP — a segment Guidewire does not economically serve.
    Source: Celent

Limitations published on Phidea are sourced to the underlying citation and reflect what is publicly named — not an exhaustive list. Consult the vendor card for the full record.

Frequently asked

Do any carriers run both One Inc and OneShield Software?
Not in Phidea's public roster. Across 21 sourced carrier-deployment entries on both vendor cards, zero carriers appear on both. The two tools are addressing different carriers within the same stack layer.
Who owns One Inc and OneShield Software?
One Inc is PE-owned (Great Hill Partners (with Nordic Capital co-investor since 2024)). OneShield Software is PE-owned (Parker-led search fund; Bain Capital Credit and Pacific Lake Partners anchor investors).
Which has more named US carriers?
One Inc has the larger publicly-named US roster: One Inc 16, OneShield Software 6. Public-roster size is a coverage signal, not a quality signal — vendors with stronger NDAs may have larger actual US footprints than the public count shows.
Where are these tools positioned in the insurance stack?
Both sit at the policy administration layer. One Inc replaces paper check disbursement, generic payment gateway; OneShield Software operates as a standalone vendor.

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