Well you have 6 months to correct it with no cost, if it was an error on the state. If it was a "spelling error" (hint hint), contact your issuing coounty and they will have you print out a form, you fill it out correctly and everything is reissued. If you have decided that now she looks like an Annie and not a Sarah then you pay for that. If the child is less than 6 months old, still contact the county of birth and they will talk you through their web site. You print off the form, fill it out, sumit it with the fee and they change it reissuing everything. If the child is more than 6 moths old, then there is another form to fill out and a bigger fee to pay. Yo then have to get the new birth certificate and then contact social security for a new card (similar to when you got married). Now if you are changing the child's last name, you then have to apply for legal court action. Many times this can just be done based on the situation with a circut court process and you pay the money and have both/ three (in the case of a step-parent) parents sign off. The I guess to answer your question; the situation is different depending on what you are changing and the reason why. Does it involvee paternity or just as simple as Sara with an "H" instead of without.