You can obtain assistance in completing the Payment Estimator from your county's Family Law Facilitator or a family law attorney. This California alimony calculator calculates California maintenance using the California county alimony formulas.Maintenance, or spousal support, is crucial when major life changes occur within family dynamics. Use our California maintenance calculator. See how parenting time affects the total. An alimony calculator can provide a rough estimate of potential alimony obligations in California. Estimate your spousal and child support, and division of assets and debts. An indepth look at how child support is calculated in California, including the formula, factors, and legal nuances. To estimate the amount of child support that may be ordered in your case, you can use the state's official Child Support Guideline Calculator. Courts in California look to Family Code for factors.