Payment Instructions

To process a payment for an invoice from CAIS, please enter any policy number reflected on the statement and click the payment button below. On the following page, you will have the option to pay multiple invoices for the same association. To do so, select the radio button that allows you to make a payment for the total amount due on the account. 

Your policy number is located on your invoice. Click to view an example image of the invoice.


When you click the button below, you will be redirected to our third-party billing site to enter your payment information. If you need assistance, please call CAIS at (888) 833-4158. Thank you for your business! 

Notice: Our billing address changed on 04/08/22 for standard mail and for overnight mail. CAIS Billing statements now include the new lockbox address starting from this date. Mail delivered to the prior addresses for regular mail and for overnight mail will be forwarded for several months.


New lockbox address for payments sent through standard US mail:


P.O. Box 986532 – Dept #0127

Boston, MA 02298-6532


New address for payments sent with overnight delivery:

CAIS- Billing Management Services


320 Libbey Industrial Parkway, Suite 500

Weymouth, MA 02189