Can you tell me a bit more about what you are trying to do?
Is it a case you need to obtain an Employer Identification Number (EIN), or is it purely locating your current one? The Merchant ID and EIN are the same, they are just called different names by different authorities.
Or if you are you needing to update your EIN within your store for tax reasons, do you see a banner within the admin? In order to update tax details, we require federal documentation to support the change. This can be in the form of a Signed and dated W9, SS4, or a CP 575 form. The documentation should include your EIN, address, and legal business name.
Let me know if you need any additional help with this, and I can advise of the most accurate way to obtain this information.
(I see you on different posts on here, you’re just the guy I was hoping would reply!)
To further clarify the Merchant ID (MID) number on the Texas Application for Sales Tax Permit and/or Use Tax Permit doesn’t appear to be the same as the IRS EIN number as I entered this number above already and judging from the question asked by the form, it states the MID is assigned by processer. Which Shopify is the processor of payments by credit card etc. See screenshot below
AP-201 Texas Application for Texas Sales and Use Tax Permit
This looks to be the one associated with your payment gateway, and as a result, Shopify may be able to provide this for you which will require access to your account. Please visit The Help Center and log in to your account to create a support request.
Once logged in, search for a topic to try to assist you with this query, and you will see the option to continue to get to the live support teams below these topics.
Advise the team that you require your Merchant ID number, and they will be able to provide this for you, my friend.