How do I assume a married name or resume a maiden name?
If you are married, you don’t have to change your last name legally — which means changing your birth certificate. You can simply assume your spouse’s last name, or combine both of your last names into a hyphenated last name.
The benefit of assuming a married name instead of doing a legal name change is that it does not change your last name on your birth certificate.
Later, if you wish to use your own last name again, or maiden name, it is already on your birth certificate and you won’t have to pay to change it back.
There is no cost to assume or resume your last name.