California removes cost as a barrier to voting, and the notarial fee is one of the costs it removes. A notary may charge nothing for notarizing a signature on a vote by mail ballot identification envelope or on any other official election document — the fee is not reduced, it is prohibited entirely. The same principle appears elsewhere in the fee schedule for veterans' benefit applications, where no fee may be charged either, and the pattern is worth recognising: certain categories of document are exempt because charging for them would burden access to a public right or benefit. The prohibition covers the notarial fee specifically and admits no workaround, so a travel charge framed as a way to recover the cost of going to the voter would defeat the exemption's purpose. The notary still performs the act properly in every other respect — appearance, identification, journal entry — and simply records no fee.