Solid and dependable

Originally founded in 1893, Nationale Borg is now part of Liberty Mutual Insurance Group. In business since 1912 and headquartered in Boston, Massachusetts, Liberty Mutual is the fith largest global property and casualty insurer based on 2018 gross written premium. Liberty Mutual also ranks 75th on the Fortune 100 list of largest corporations in the United States based on 2018 revenue. As of December 31, 2018, Liberty Mutual had $ 41.6 billion in annual consolidated revenue.
Liberty Mutual employs nearly 50,000 people in 30 countries and economies around the world. Liberty Mutual offers a wide range of insurance products and services, including personal automobile, homeowners, specialty lines, reinsurance, commercial multiple-peril, workers compensation, commercial automobile, general liability, surety, and commercial property.

While we finalize the regulatory process to obtain approval for the transfer of all of Nationale Borg’s guarantees from AmTrust International Underwriters DAC (AIU DAC) to Liberty Mutual Insurance Europe SE (LMIE), all existing and new guarantees are still underwritten by AIU DAC, which is rated A- by A.M. Best. However, all guarantees are 100% reinsured by LMIE, which is rated A (Strong) by Standard & Poor’s.

Once the regulatory process is completed, which is expected in the spring of 2020, all guarantees will be transfered to the A rated paper of LMIE.


As a member of the International Credit Insurance and Surety Association (ICISA), the Panamerican Surety Association (PASA) and the Surety and Fidelity Association of America (SFAA) we have access to a worldwide network of foreign correspondents. We also work with a variety of banks across the world to service you worldwide.