Worksheets to calculate guideline amounts of maintenance and child support. Optional tools to help with calculations are below.Specific factors are determined in calculating spousal support in New York including income of both parties and the duration of marriage. New York law requires courts to use a statutory formula to calculate a suggested amount of temporary support. This Pennsylvania alimony calculator calculates Pennsylvania maintenance using Pennsylvania alimony formula. Our tool will calculate how much spousal support a judge may order. Complete the fields to calculate and estimate. Find out how alimony is calculated in Pennsylvania and what factors the court considers when deciding spousal support awards. You will receive 30 percent of the difference between your income and your spouse's income minus child support. To calculate alimony or spousal support you will need the following information: Your gross yearly income.