Use our FREE online Arizona alimony calculator to determine spousal maintenance costs in AZ. ✓ Instant. Maintenance, or spousal support, is crucial when major life changes occur within family dynamics.Use our Texas maintenance calculator. This calculator is for statewide use. Does Texas Have an Alimony Calculator? Unlike with child support, Texas doesn't have a formula for calculating spousal maintenance. Once the spouses' gross incomes, ages, and marriage length have been entered into the Arizona Maintenance Calculator, click the "Calculate Alimony" button. Get an estimate for alimony payments and duration. Get an idea on how much money a month you can expect to pay, and for how you can expect to pay it. Our Texas Alimony Calculator helps provide an estimate of the spousal maintenance you might receive or be required to pay based on your unique circumstances.