CCQ, r. 10 - Tariff of duties respecting acts of civil status, change of name or of designation of sex and substitution of the usual given name

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7. Where a person requests, in a single application, that his or her surname be changed and that the new surname be assigned to his or her minor children, the duties prescribed in section 6 are increased by $25 per child.
O.C. 1593-93, s. 7.