This calculator is for statewide use. The calculator below can provide you with an estimate as to how a court may handle alimony.Complete the fields below and press calculate to estimate alimony. The figures presented are based on legal California alimony guidelines. This California alimony calculator calculates California maintenance using the California county alimony formulas. Use our FREE online Arizona alimony calculator to determine spousal maintenance costs in AZ. ✓ Instant. Learn how to calculate alimony with factors, formulas, and statespecific guidelines. Understand earning power, marriage length, and more. Under the Maricopa County formula, the maintenance amount is equal to the payor spouse's income minus the recipient spouse's income. You may also be aware that the Maricopa County marriage duration factor can be used to determine spousal support in Arizona.