Billing Information

Send payments to:
Knowland Group
PO Box 347710
Pittsburgh, PA  15251-4710

Use a credit card or ACH payment and follow the link below:
Use your personal user ID and password to complete your payment.
*Online pay is available only if paying in US Dollars or CAD Dollars.

Use a credit card or ACH payment and call the following number:

For information on payment via wire transfer, please contact or 302-645-9777.

Payments in Other Currencies

For payments that are not in US Dollars, please email us for options at

Billing Inquiries

For questions on your invoice, payments, or account balances, please contact the accounting department at 302-645-9777 or

Customer Service

For questions on your contract or for service issues, please contact Client Care at 410-860-2270 or