Surety bonds and guarantees that power progress in the U.S.
Liberty Mutual Surety provides flexible contract bonds and commercial bond solutions for U.S. businesses and contractors. With experienced underwriters, strong financial backing, responsive service, and renowned value added services, we help clients manage risk and power progress.
Why Liberty Mutual Surety
Liberty Mutual Surety is the largest surety provider in the U.S. and globally. Our experienced U.S. teams partner with brokers and clients to deliver tailored solutions across contract and commercial surety. Supported by in-house claims, legal, and analytics professionals, we identify risk early and help keep projects and business obligations on track.
Capacity
Industry-leading capacity to support large, multi-jurisdictional programs
Broad appetite
Extensive suite of products including all sized transactional, commercial, large-scale contract, and international bonds
Strong broker and client partnerships
Flexible solutions and programs designed to make it easy to work with us
Underwriting expertise
Deep, specialized, and consistent underwriting expertise across all types of bonds and guarantees
Cross-border proficiency
Global Surety underwriting teams focused on reverse-flow, fronted transactions, and complex cross-border structures
Industry Insights
Macroeconomic data, market intelligence, training, and tailored construction consulting that help clients anticipate trends
Liberty Mutual Surety by the numbers
From our financial strength to our local expertise and global reach, Liberty Mutual Surety has the products and capabilities to help your business succeed
#1
Surety and guarantees provider worldwide1
1Based on publicly available data
95th
Fortune 100
based on 2025 revenue
$1.9B
2025 gross written premium
ranking us as the largest U.S. surety, based on SFAA data
60+
Can issue bonds in 60+ countries
Through local Liberty operations or fronting companies
Large contract bonds
For contractors with annual revenue greater than $20 million (up to certain limit)
Explore large contract bonds
Small-to-mid-sized and transactional contract bonds
For contractors with revenue up to $25 million
Learn more about Surety Plus
Subdivision bonds
For residential, commercial, and land developers.
Explore subdivision bonds
Hard-to-place bonds
For contractors who might need collateral, funds administration, or SBA-backed support.
Learn more about Vista
Large commercial surety bonds
For public and private corporations with larger revenues up to $750 million, with significant additional capacity for qualified clients.
Explore large commercial surety bonds
Small-to-mid-sized and transactional commercial surety bonds
For individuals or businesses with revenue up to $50 million (or higher based on bond classification or certain accounts).
Learn more about small-to-mid-sized bonds
Subcontractor default insurance
For general contractors seeking protection from losses caused by subcontractor default.
Explore SDI
All sized bonds for all types of businesses and contractors
Liberty Mutual Surety offers a comprehensive portfolio of contract, commercial, and fidelity bonds to help businesses meet contractual, regulatory, and financial obligations. With solutions for businesses of virtually every size, customers can continue to rely on us as their needs evolve and their businesses grow. Backed by experienced teams, strong capacity, local market knowledge, and global capabilities, we deliver responsive, tailored solutions across markets.
Insights
Find More Resources
Podcast • 12/18/25
Construction risk roundtable
In our construction risk roundtable series, we discuss issues and trends facing the industry and how companies can prepare.
Partner with us
Webinar • 05/01/25
U.S. housing and global macroeconomic trends
Expert panelists discuss the current housing market in the United States and the impact on construction and surety.
Partner with us
Webinar • 03/05/25
Exploring the global risk landscape
Industry experts discuss the interconnectedness of risk around the globe and the future of the surety and construction industries.
Partner with us
Report • 02/20/25
Effectively managing contractor risks
Contractors have faced a variety of risks since COVID-19. Collaborating with their surety has helped mitigate them.
Partner with us
Webinar, podcast • 10/22/24
Dynamics of the Global Surety market
Watch this informative webinar to learn about the differences among surety markets in Europe, Asia, Australia, and Canada.
Partner with us
Webinar • 05/21/24
Elements of contractor distress
Learn more about the warning signs of contractor distress and how a surety and their claims team can help mitigate the risks present for an account.
Partner with us
Learn more
For more information about Liberty Mutual Surety, download our brochure or reach out to your agent or broker.