
Guarantees that power global progress in the Netherlands
The team at Liberty Mutual Surety, formerly Nationale Borg, has been the surety provider for many leading companies in the Netherlands and Belgium for over 130 years. As the largest non-bank surety provider, we help our clients do business quickly and efficiently to expand their markets.
We have the capability, experience, and resources to support every type of business in providing guarantees to their local, national, and multinational clients.

Global, market-leading solutions
Liberty Mutual Surety’s broad issuance capacities and expertise mean we respond effectively to the guarantee needs of businesses operating both domestically and internationally.
Our underwriters recognize that with changing business environments, fast and flexible access to guarantees is vital to our customers’ success. We pride ourselves on our deep market knowledge and industry expertise, which allow us to deliver superior customer service and develop long-term relationships.
By the numbers



Why choose a guarantee from Liberty Mutual Surety?
With our bonds and guarantees, your clients receive the certainty they seek, while you continue to focus on your core business. We operate globally, but provide tailored advice with our local expertise.
- Tailored solutions
As a market leader, we leverage our years of experience and knowledge to provide a suitable solution that alleviates your concerns and protects your reputation, both in the Netherlands and beyond.
- Reliable partner
We are your long-term partner, with over 130 years of history proving that we will always be there for you. Our S&P ‘A’ rating demonstrates that your clients and partners can rely on Liberty Mutual Surety.
- Additional source of financing
Our guarantees create additional financing capacity, alongside the credit from your bank. This offers more financial options and flexibility, especially when it comes to optimizing your (extra) working capital.

