You can obtain assistance in completing the Payment Estimator from your county's Family Law Facilitator or a family law attorney. Permanent Spousal Support is different.There is no formula the parties can rely on to determine what an appropriate amount of support should be. If child support is an issue, spousal support is calculated after child support is calculated. Our free California spousal support calculator helps you easily estimate your potential spousal support payments. Quick, easy, and accurate. 15.3 of the Divorce Act and the equivalent provincial law provisions. Temporary spousal support is a relatively simple formula that looks at income and child support obligations of the party required to pay. Is the calculation for child support same as the spousal support? Family Code Section 4055 details a complicated algebraic formula for the Court to use in arriving at a child support amount.