Free Florida alimony calculator to estimate annual alimony payments and monthly alimony payments. North Carolina doesn't provide a formula for calculating postseparation support or alimony.Our alimony calculator will provide you with a basic support calculation for the following states or formulas. There isn't a specific formula for calculating alimony in North Carolina, and the calculator above should be considered a rough estimate. Learn about the types of alimony available in Florida and how judges decide which type to award, how much the payments should be, and how long they'll last. 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. Learn how to calculate alimony in Florida. Calculate your potential alimony payments in Sourcetable with ease. The State of Florida doesn't have a mathematical formula for making alimony calculations.