Non-Profit Information

The Municipal Management Association of Southern California Inc. has received determination from the Internal Revenue Service that it qualifies as a non-profit corporation. MMASC has been determined to be a 501(c)(6) which means that contributions to MMASC are not deductible as a qualifying charity. In certain cases, membership and other fees may be tax deductible as qualifying business expenses, but in all cases, MMASC recommends that you seek the advice of a tax professional for any questions.

As required by law, MMASC's Application for Non-Profit Status (IRS 1024) and Determination letter are available here for public viewing.


If your jurisdiction requires a W-9 or similar document for its records, a properly filled out and signed W-9 is available below. Please be advised we do not fill out any W-9s, or substitute W-9s, sent to us in the mail.