This article and video explain spousal maintenance (alimony) in Washington State. They also explain undifferentiated family support.The following calculator provides an estimate of a potential alimony award in the State of Washington. Spousal support, spousal maintenance, or alimony—how much will you owe your ex after your Washington State divorce, or how much will they owe you? Each state has guidelines to calculate spousal support. However, they are generally just that – guidelines. 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 about the basics of alimony and spousal support, how the new Tax Cuts and Jobs Act will affect payments, and understand key alimony terms. You should keep in mind that this free online calculator only considers employment income and can only do simple calculations.