October 04, 2023

How to Pay Your MSC Invoice

You'll receive a PDF invoice via email from MSC. On this invoice, you can find the Invoice Number and Client Number in the top right corner. You'll need these numbers to fill out the online bill pay form.

Your invoice will look like this:



The MSC online bill pay page will look like this:




Additionally, if you need a W9 from MSC, we conveniently attach it to the end of every PDF invoice.

If you need support, please reach out to our team using the form on this page: https://www.costsegs.com/client-portal.