We are committed to making it easy for you to do business with us. That includes offering our customers several different options for paying premiums, including online, mail and phone options.
Please note that National Marine Underwriter invoices are sent from the OneBeacon Insurance Group billing office.
You may pay your premium online through the OneBeacon Insurance Group customer website. To do this, please visit the website, register your policy using the information found on your invoice, then, log in to pay your premium. Pay online
Checks made payable to OneBeacon Insurance Group and remittance forms from your invoice may be sent to:
National Marine Underwriters
P.O. Box 371871
Pittsburgh, PA 15250-7871
Please include your policy number on the check. Checks must be received by the due date. Please allow 7 days for processing.
To make a payment by phone, please call our OneBeacon payment department at 877.624.7775 (Weekdays 8:00am – 5:00pm)