In Colorado, the court is required to consider the contribution of each spouse to the acquisition of the marital property.
As a practical matter, in this day and age, the courts generally seek to effectuate a 50/50 division of the marital estate, this is not always the case and not legally required. An extreme example of this involved a case with an elderly homeowner Spouse who owned a home for many years and a much younger Wife. The Husband had added the Wife to the title and thus transformed this asset from Separate to marital property. The court was upheld by the Court of Appeals in awarding 90% of the value of the home to the husband based on his greater contribution to acquisition of the asset. So while an asset may become marital, it doesn’t mean that it will necessarily be divided 50/50. In re marriage of Stumpf, 832 P.2d 845 (Colo. App. 1996).