[header] How to become a notary in texas [title] Be 18 years of age or older. [step] You can only become a notary public in texas if you are at least eighteen years of age. Proof of your age is provided by your birth certificate. 
[substeps] Get a copy of your birth certificate. If you don't already have one, you might have to write, call, or (e) mail a form and fee to the office of vital records in the city, town or county where you were born.