Texas notaries can submit a renewal application up to 3 months before their commission expires.
If your commission expires, you must reapply as a new applicant. There is no grace period for performing notarial acts after expiration.
To renew your notary commission, you must submit a new application, pay the renewal fee, and obtain a new surety bond.
The renewal process is essentially the same as applying for a new commission, including submitting the application, obtaining a surety bond, and paying the fees.
In Texas, a notary public commission is valid for 4 years, and you must renew it before it expires.