This calculation is for information purposes only and is not intended as a substitute for obtaining legal advice! Our tool will calculate how much spousal support a judge may order.Complete the fields to calculate and estimate. This Virginia alimony calculator calculates Virginia maintenance using the Fairfax County alimony formula. Calculating Debt Payoff. If you have unpaid child support debt, you can figure out how long it will take to pay it off with our Arrears Payoff Calculator. To obtain a divorce in Virginia, either you or your spouse must be a resident of Virginia for at least six months prior to filing for divorce. This guide explains how spousal support works in Virginia and outlines how courts calculate it. Find out how much you'll pay in Virginia state income taxes given your annual income. Customize using your filing status, deductions, exemptions and more.