Appreciation of premarital and inherited assets in Colorado Appreciation of premarital and inherited assets in Colorado

The inherited brokerage account is separate at its value on the date of receipt; a decade of market gains is marital. The premarital house is separate at its date-of-marriage equity; the Front Range run-up since is marital. The gifted ranch, the family limited partnership units, the premarital company: same structure, asset by asset. In a twenty-year Colorado marriage holding appreciating assets, the marital claim on appreciation routinely exceeds the original separate value several times over. Both spouses should understand that arithmetic before either takes a position.

Every appreciation claim needs a starting value and a current value. The current value is ordinary valuation work. The starting value, what the asset was worth at the marriage or at receipt, often two decades ago, is where these cases are won and lost, because it usually must be reconstructed: old account statements, tax returns, gift and estate tax filings, contemporaneous appraisals done for financing, industry data, retrospective expert valuation. Every dollar added to the starting value is a dollar removed from the marital claim, and vice versa. The spouse who organizes this evidence first tends to control the negotiation.

Colorado distinguishes trust interests that are property, vested remainders and defined rights, from mere expectancies, purely discretionary interests where a trustee controls everything. The instrument’s language decides which side of the line an interest falls on, and drafting choices made a generation ago determine today’s exposure. Even non-property interests are not invisible: distribution histories inform maintenance and child support as economic circumstances. Families with layered trust structures should have the instruments read early, by counsel who knows what Balanson made of them.

One thing, reliably: a marital agreement. A well-drafted prenuptial or postnuptial agreement under Colorado’s Uniform Premarital and Marital Agreements Act can keep separate property and its growth separate, overriding the default rule. After the fact, the tools are narrower: meticulous records that at least fix the starting values, and valuation advocacy that keeps the marital claim honestly measured. Tracing protects the principal. Only contract protects the growth.