After a notarial act or certificate is drawn, the notarisation will then require the application of either an apostille or a legalisation if it to be used overseas. The purpose of the apostille is to convey to the foreign authority that the notarial seal and signature that features on the notarial act is genuine and authentic. The purpose of the legalisation is to convey to the overseas authority that the apostille is genuine and authentic.
The effect of the Hague Convention on the international use of notarised documents has simplified this process in some case: states who have signed the Convention no longer require the process of legalisation. Those who have not signed the Convention, on the other hand, will still require the notarised documents to be legalised before they can be accepted as good evidence in the foreign jurisdiction.
The costs and fees associated with obtaining an apostille or legalisation is a matter for the authority that grants the apostille or legalisation; the notary public will not have any bearing on how much the legalisation or apostille will cost and these expenses will have to be born by the client. If the client so wishes, he may take it upon himself to ensure that his documents receive the correct treatment after notarisation, however the public notary can extend his services to make the necessary arrangements.