Membership Payment

See the instructions below for joining or renewing membership as an individual or with a group. 

Individual Membership

Individual Membership with Credit Card

Use this option to join/renew your personal membership only (MATSOL website login required). To join/renew membership for someone else, follow instructions for the Group Membership with Credit Card or contact [email protected] for assistance. 

1. Log into the MATSOL website or create a new account: Individual Membership with Credit Card Payment
2. Complete the online form and pay by credit card. 
3. Membership actives immediately. Watch for a confirmation email from MATSOL. 

Individual Membership with Purchase Order or Check

RENEWING MEMBERS: If you received a membership renewal invoice from MATSOL:

1. Download and/or print the invoice from MATSOL. If needed, the invoice can be sent to your business office for payment. 
2. Watch for an email from MATSOL with confirmation of your membership and payment. Please allow 1-2 weeks for processing memberships with PO or Check payment. You can disregard any automated renewal reminders you receive while MATSOL is processing your payment. 

NEW & RENEWING MEMBERS: If you are a new member or did not receive a membership renewal invoice: 

1. Print the PDF Membership Form: MATSOL Membership Application 2023-24.pdf. Print and mail it with a check or PO or email it with a PO to [email protected]. 
2. Watch for an email from MATSOL with confirmation of your membership and payment. Please allow 1-2 weeks for processing memberships with PO or Check payment. 

Send payment to MATSOL:

• PO Payment: Email the signed purchase order to [email protected]
• Check payment: Mail the check to MATSOL, 160 Alewife Brook Parkway #1201, Cambridge MA 02138.

Group Membership

Group Membership with Purchase Order, Credit Card, or Check

1. Download and complete the Group Membership Form (Excel file).
2. Return the completed form to MATSOL at [email protected].
3. Watch for email from MATSOL with an invoice. 
4. Send payment:
1. PO Payment: Email the signed purchase order to [email protected]
2. Check Payment: Mail the check to MATSOL, 160 Alewife Brook Parkway #1201, Cambridge MA 02138
3. Credit Card Payment: Pay the invoice online with a credit card.
5. MATSOL will send a confirmation to each individual member with instructions for activating membership.