A Change in Your First Name or Last Name Only The CRA does not accept changes of name by email or online, not even in the My Account platform. If you are only changing your first name or last name, you need to call 1-800-959-8281 to advise the CRA of your name change.
If you change your name soon after you file your annual tax return, then you can inform the IRS of the EIN number change name through a signed notification, similar to a sole proprietorship.
By Form. To change your address with the IRS, you may complete a Form 8822, Change of Address (For Individual, Gift, Estate, or Generation-Skipping Transfer Tax Returns) and/or a Form 8822-B, Change of Address or Responsible Party ? Business and send them to the address shown on the forms.
Whether you file Form SS-5 at your local Social Security office or by mail, you'll need to provide documents to support your legal name change, such as an original or certified copy of your marriage certificate. For more information, go to IRS.gov.
Line 1 - Name If submitting this W-9 as an individual, you should enter the name shown on your tax return. If you have changed your last name without informing the Social Security Administration (SSA), enter your first name, the last name as shown on your Social Security card and your new last name.