Test Page The California Guideline Child Support Calculator is based on the same child support legal guidelines used in California courts, and can be used to estimate the amount of child support that may be ordered in your case. The County Child Support Commissioner or Family Law Judge has the final authority to determine the amount of a child support order. This calculator provides only an estimate and is not a guarantee of the amount of child support that will be ordered. Many factors may affect the amount of child support awarded. If you have any questions about the child support guidelines, you should talk with a lawyer or contact a Family Law Facilitator. Guideline Calculator Links Go to Calculator Download the Calculator User Guide Go to Family Law Facilitator List *Email your question about the Guideline Calculator *Please note, this address is only to be used to report technical problems with the website calculator. If you have questions about our programs or your specific case, please contact your local child support agency.