How is alimony calculated in North Carolina? North Carolina doesn't provide a formula for calculating postseparation support or alimony.There isn't a specific formula for calculating alimony in North Carolina, and the calculator above should be considered a rough estimate. Our alimony calculator will provide you with a basic support calculation for the following states or formulas. Estimate your PA alimony quickly with our easy-to-use calculator. Get accurate results in just a few clicks. 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. Find out how alimony is calculated in Pennsylvania and what factors the court considers when deciding spousal support awards. The following calculator provides an estimate of a potential alimony award in the State of North Carolina.