Maintenance, or spousal support, is critical when a major life change occurs within family dynamics. Use our Colorado maintenance calculator.This Colorado alimony calculator makes Colorado maintenance calculations using the Colorado alimony formula. This calculator is intended to be used only as a general tool to estimate potential splits and payments. Complete the fields below and press calculate to estimate alimony. The figures presented are based on legal California alimony guidelines. Maintenance, or spousal support, is important when a major life change occurs within family dynamics. Use our maintenance calculator today. This California alimony calculator calculates California maintenance using the California county alimony formulas. Colorado courts take 40 percent of the divorcing couple's combined monthly adjusted gross income (AGI) and subtract the lowerearning spouse's monthly AGI.