Colorado divorce laws: no-fault, maintenance formula & property division

Colorado divorce laws at a glance

Colorado's divorce statutes sit in Title 14, Article 10 of the Colorado Revised Statutes, collectively known as the Uniform Dissolution of Marriage Act. The table below summarizes the rules that matter most when you are deciding how and when to file.

A few of these rules deserve a closer look, especially if you are early in the process or deciding whether Colorado is the right state to file in. The rest of this guide walks through each one so you know exactly what to expect.

No-fault grounds and dissolution terminology

Colorado is a pure no-fault state. The only ground for ending a marriage is that the marriage is irretrievably broken, meaning there is no reasonable chance the two of you will reconcile. You do not have to prove adultery, cruelty, abandonment, or any other kind of wrongdoing to get divorced. You also cannot use fault to get a bigger share of property or a better maintenance award, because Colorado courts are prohibited from considering marital misconduct when dividing assets.

Most people call the process "divorce," but Colorado courts and forms use the phrase dissolution of marriage. The petition you file is called a Petition for Dissolution of Marriage (form JDF 1101), and the final order is called a Decree of Dissolution of Marriage. The terminology change is more than cosmetic. It signals that Colorado treats the end of a marriage as an administrative, forward-looking process rather than a lawsuit where one spouse has to be declared "guilty."

Because the grounds are so simple, contested divorces in Colorado rarely fight about whether the marriage should end. The real disputes are about money and children, which is where the rest of the statutes come in.

Residency, jurisdiction, and the 91-day rule

Colorado courts can only dissolve a marriage if they have jurisdiction. That requires one spouse to have been a legal resident of Colorado for at least 91 days before filing. If you both just moved here, you will need to wait out the 91 days before the court can accept your petition.

The 91-day residency rule for spouses

Only one of you has to meet the 91-day rule. If you moved to Denver last month but your spouse has lived in Boulder for five years, you can file right now. Residency means physical presence in Colorado with an intent to stay. Courts accept driver's licenses, voter registration, lease agreements, utility bills, or employment records as proof. Short absences for work, vacation, or military deployment do not reset the clock.

The 91-day waiting period after filing

Even if you and your spouse agree on every issue, Colorado law requires the court to wait 91 days from the date of service (or the date of a joint petition) before entering a Decree of Dissolution. This is often called a "cooling-off period," though nothing requires you to attempt reconciliation. Most amicable dissolutions finalize in three to five months; contested cases often run nine months to more than a year.

The 182-day rule for children

If you have minor children, Colorado must also be their "home state" under the Uniform Child Custody Jurisdiction and Enforcement Act, which means the children must have lived in Colorado for at least 182 days before filing, or since birth. A Colorado court can still dissolve your marriage if this rule is not met, but it may not have the power to issue custody or child support orders, and those pieces may have to be handled in another state.

The Colorado spousal maintenance formula

Colorado is one of a small group of states that gives judges a statutory formula to calculate spousal maintenance, which is the Colorado legal term for alimony. The formula took effect on January 1, 2014 and was designed to reduce the wide variation in maintenance awards across different judicial districts. Before then, awards in similar cases could look very different depending on which judge heard the matter.

Two important things to understand up front. First, the formula is advisory, not mandatory. Judges can deviate from the formula based on the statutory factors if the result would be unfair. Second, the formula only applies if the marriage lasted at least three years and the couple's combined adjusted gross annual income is $240,000 or less. Above that threshold, judges decide maintenance based on the full list of statutory factors without a formula.

How the amount is calculated

The core calculation takes 40% of the higher earner's monthly adjusted gross income and subtracts 50% of the lower earner's monthly adjusted gross income. Because maintenance is no longer tax-deductible for divorces finalized on or after January 1, 2019, Colorado applies a tax-neutrality multiplier to that result:

There is also a hard cap: the recipient's maintenance plus their own income cannot exceed 40% of the couple's combined monthly adjusted gross income.

How the duration is calculated

The formula for how long maintenance lasts is a percentage of the length of the marriage. At 36 months of marriage (3 years), the advisory term is 31% of the marriage length, or roughly 11 months. The percentage climbs gradually (about 0.165 points per additional month of marriage) until it reaches 50% at 150 months (12.5 years). For marriages longer than 20 years, the court may order a specific term or indefinite maintenance, but the term cannot be less than the guideline term for a 20-year marriage without specific findings.

For a deeper walk-through, see our article on how alimony is determined in a Colorado divorce.

Equitable distribution of property and debts

Colorado is an equitable distribution state, not a community property state. "Equitable" means fair, which is not always the same as equal. In practice, most Colorado judges do divide the marital estate close to 50/50, but they are allowed to split it 55/45, 60/40, or some other ratio if the facts of your case call for it.

Marital property versus separate property

The first step in any property division is sorting out what is marital and what is separate. Marital property is everything either spouse acquired during the marriage, regardless of whose name is on the title. Separate property belongs to one spouse only and is not divided. Colorado law recognizes four types of separate property:

• Property one spouse owned before the marriage
• Property received during the marriage as a gift or inheritance
• Property received in exchange for separate property (and properly traced)
• Property acquired after a decree of legal separation or excluded by a valid agreement, such as a prenup

The appreciation trap

Here is where Colorado surprises a lot of people: any increase in value of separate property during the marriage is treated as marital property. If you owned a house worth $300,000 on your wedding day and it is now worth $500,000, the $200,000 of appreciation is marital and subject to division. The same rule applies to retirement accounts, investment portfolios, and businesses that were separate at the start of the marriage. Learn more in our guide to separate property in a Colorado divorce.

What factors the court considers

When judges divide the marital estate, Colorado law directs them to consider four main factors: each spouse's contribution to acquiring the property (including homemaking), the value of each spouse's separate property, the economic circumstances of each spouse at the time of division, and any changes in the value of separate property or depletion for marital purposes. Marital misconduct is explicitly off the table.

Most Colorado couples resolve property division through a written Separation Agreement (form JDF 1115) rather than fighting it out at a permanent orders hearing. If you reach an agreement, the judge reviews it for fairness and typically signs off without a trial.

Parental responsibilities and child support

Colorado replaced the word "custody" with allocation of parental responsibilities, which is split into decision-making (legal custody) and parenting time (physical custody). Courts allocate both in the best interests of the child, using factors such as the child's relationship with each parent, the child's adjustment to home and school, the mental and physical health of everyone involved, and each parent's ability to encourage the child's relationship with the other parent.

Shared decision-making is the default, but courts can give one parent sole decision-making authority (or split authority by topic, such as medical versus educational) when it fits the family's situation. Our article on shared, split, and sole custody in Colorado walks through the different arrangements in more detail.

Child support is calculated using a statewide income-shares formula that considers both parents' gross incomes, the number of overnights each parent has, and the costs of health insurance, childcare, and extraordinary expenses. The Colorado Judicial Branch provides an official online child support calculator so parents can estimate their own numbers before negotiating.

If your case includes children, Colorado also requires both parents to complete an approved parenting class before the dissolution is finalized in most judicial districts.

Frequently asked questions about Colorado divorce laws

Official Colorado court resources

The links below go directly to Colorado government and court sources for forms, statutes, and self-help instructions.

• Colorado Judicial Branch: Divorce & Legal Separation Self-Help Center
• Colorado Judicial Branch: Family Law Forms (JDF)
• Colorado Revised Statutes, Title 14 (Domestic Matters)
• Colorado Legal Help Center: Divorce Information
• Colorado Family Court Facilitator Program
• Colorado Attorney General: Family Support Registry

References & further reading

Sources cited in this article and recommended for further reading.

1. 1. FindLaw. "Colorado Revised Statutes Title 14, Section 14-10-114". Full text of Colorado's spousal maintenance statute, including the advisory guidelines and statutory factors. FindLaw, updated January 2025. Accessed April 2026.
2. 2. Colorado Judicial Branch. "Divorce or Legal Separation". Official self-help center page covering residency, filing procedures, and required forms for Colorado dissolutions. Colorado Judicial Branch, 2025. Accessed April 2026.
3. 3. Justia. "Colorado Revised Statutes Section 14-10-114 (2024)". Current codified text of the Colorado maintenance statute with amendment history. Justia, 2024. Accessed April 2026.
4. 4. Colorado Judicial Branch. "Spousal/Partner Maintenance Advisement Pursuant to C.R.S. §14-10-114". Official court form and calculation worksheet used in Colorado dissolution cases. Colorado Judicial Branch, July 2024. Accessed April 2026.
5. 5. Hello Divorce. "Separate Property in a Colorado Divorce". Hello Divorce guide on how Colorado classifies and protects separate property in a dissolution. hellodivorce.com. Accessed April 2026.
6. 6. Hello Divorce. "How Is Alimony Determined in a Colorado Divorce?". A deeper look at the Colorado maintenance formula, statutory factors, and common deviation scenarios. hellodivorce.com. Accessed April 2026.
7. 7. Hello Divorce. "Understanding Shared, Split, and Sole Care of a Child in Colorado". Overview of how Colorado allocates parental responsibilities and the different custody arrangements available. hellodivorce.com. Accessed April 2026.