Unique needs, specialized products

As the world’s largest surety, we help contractors and businesses of all sizes access the surety bonds they need to thrive. We’ll work with you across a range of industry sectors and global markets on projects of all sizes.

With Liberty Mutual, every surety solution is backed by the financial strength and stability of a Fortune 100 global carrier.

  • Helping construction clients discover new possibilitiesHelping construction clients discover new possibilities

By the numbers

Liberty Mutual Surety is rated A2, (Good) by Moody’s, A (Excellent), by A.M. Best Company, and A (Strong), by Standard & Poor’s.

largest surety in the U.S.

(Based on 2022 SFAA DWP)


largest global surety

(based on available global GWP and NEP data)

billion Treasury listing

contractors we bond on the ENR Top 100

(Based on 2022 data)

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Our dedicated teams of surety claims professionals are committed to managing bonded obligations efficiently.

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Global ranking based on available Gross Written Premium and Net Written Premium; U.S. ranking based on 2019 Net Earned Premium

This website is intended to be informational. Descriptions are provided only as a summary outline of the products and services available and are not intended to be comprehensive and do not constitute an offer to sell or a solicitation. The products and services described may not be available in all states or jurisdictions. See your policy, service contract, or program documentation for actual terms, conditions, and exclusions. Any inquiries regarding the subject matter set forth herein should be directed through licensed insurance professionals.

Coverage and insurance are provided and underwritten by Liberty Mutual Insurance Company or its affiliates or subsidiaries. When we offer insurance products, we will state clearly which insurer will underwrite the policy. Some policies may be placed with a surplus lines insurer. Surplus lines insurers generally do not participate in state guaranty funds and coverage may only be obtained through duly licensed surplus lines brokers.