Tex. Gov't. Code Ann. § 406.024 sets out the maximum fees a Notary Public, or their employer, may charge for notary public services. A Notary Public who charges more than the maximum set out below subjects the notary to possible criminal prosecution and suspension or revocation of the notary’s notary public commission by the Secretary of State's office.
notarytraining.sos.texas.gov/notaryfees
Mobile notaries travel to provide courtesy notary services in the customer’s home, place of business, or other location of choice. The fee schedule for mobile services is determined by the notary and is in addition to the maximum state fees in the above link.