Billing address to send physical payment

Hi, you can mail paper checks to Goldman Sachs Bank. Here is their address for payments,

Goldman Sachs Bank, Lockbox 6112, P.O. Box 7247, Philadelphia, PA 19170-6112.

There support representative suggested to me mailing the check on/or around the 20th of every month to insure the check arrives by the end of each month. The Due Date on every account is always the last day of the month.