Does Adultery Affect Divorce in Colorado? 2026 Legal Guide to Infidelity Impact

Adultery does not directly affect divorce outcomes in Colorado because the state operates under a pure no-fault divorce system. Under C.R.S. § 14-10-106, the only legal ground for dissolution of marriage is that the marriage is "irretrievably broken," and courts cannot consider marital misconduct when granting a divorce, dividing property, or awarding spousal maintenance. However, adultery may indirectly impact your divorce through the economic misconduct exception—if your spouse spent marital funds on an affair, the court can adjust property division to compensate for dissipated assets. Colorado courts evaluate 12 statutory factors for maintenance and focus solely on the child's best interests for custody, making a cheating spouse's behavior largely irrelevant unless it directly harmed the children or the marital estate.

How Colorado's No-Fault Divorce Law Treats Adultery

Colorado courts cannot consider adultery when granting a divorce or determining financial outcomes because the state adopted pure no-fault divorce in 1971 through the Uniform Dissolution of Marriage Act. Under C.R.S. § 14-10-106, the sole ground for divorce is that the marriage is "irretrievably broken," which eliminates any need to prove fault such as adultery, cruelty, desertion, or abandonment. This makes Colorado one of approximately 17 states that are purely no-fault jurisdictions where fault-based grounds simply do not exist as a legal option.

The practical effect of this law means that proving your spouse committed adultery during your marriage provides no legal advantage in Colorado divorce proceedings. You cannot use infidelity to obtain a divorce faster, secure more favorable property division, receive higher spousal maintenance, or gain preferential custody arrangements. The court will not hear testimony about your spouse's affair when deciding these issues unless the affair involved economic misconduct that depleted marital assets.

Colorado's legislature made this deliberate choice to reduce conflict in divorce proceedings and focus on equitable resolution rather than assigning blame. The case In re Marriage of Jorgenson, 143 P.3d 1169 (Colo. App. 2006), reinforces that marital misconduct is irrelevant in the division of assets under Colorado law. Whether one spouse was faithful and the other was not, the court applies the same statutory factors to divide property, calculate maintenance, and allocate parental responsibilities.

Adultery and Property Division in Colorado: The Economic Misconduct Exception

Colorado divides marital property equitably—not equally—without regard to marital misconduct under C.R.S. § 14-10-113, meaning a cheating spouse receives the same property division consideration as a faithful spouse. However, Colorado courts recognize a critical distinction between "marital fault" (adultery itself) and "economic fault" (financial misconduct), and economic fault can significantly impact how property is divided. If your spouse spent $50,000 of marital funds on hotels, gifts, travel, and entertainment for an affair partner, the court can credit you that amount when dividing the remaining marital estate.

Under Colorado law, dissipation of assets occurs when one spouse intentionally wastes marital property for a non-marital purpose during the breakdown of the marriage. Common examples of affair-related dissipation include:

• Luxury gifts purchased for an affair partner using joint accounts
• Hotel and travel expenses for secret trips with a paramour
• Cash withdrawals used to fund an extramarital relationship
• Credit card debt accumulated for affair-related spending
• Rental payments for a second residence shared with an affair partner

The leading Colorado case on this issue, In re Marriage of Finer, 920 P.2d 325 (Colo. App. 1996), established that dissipated assets are valued at the time they were misused. This means if your spouse spent $30,000 on an affair two years before filing for divorce, you may be entitled to a $15,000 credit (representing your 50% share of those marital funds) when dividing the remaining property.

To prove dissipation in a Colorado adultery divorce, the accusing spouse must demonstrate that:

1. The expenditure occurred during the marriage breakdown
2. The spending was for a non-marital purpose
3. The amount was excessive and not condoned by the other spouse

Once you establish these elements, the burden shifts to your spouse to prove the expenses were legitimate marital expenditures. Courts have broad discretion to adjust property division or even order transfer of separate property to compensate for proven dissipation.

Does Adultery Affect Alimony in Colorado?

Adultery has zero impact on spousal maintenance awards in Colorado because the state's no-fault framework explicitly excludes marital misconduct from maintenance calculations. Under C.R.S. § 14-10-114, courts determine maintenance based solely on financial factors using an advisory guideline formula, and a spouse's infidelity cannot increase or decrease the support amount. The only exception involves economic dissipation—if affair spending reduced the marital estate, this may indirectly affect maintenance by altering the property division analysis.

Colorado uses a specific formula for calculating spousal maintenance when combined gross income is $240,000 or less and the marriage lasted at least 3 years:

Before awarding maintenance, Colorado courts must first find that the requesting spouse:

• Lacks sufficient property to meet reasonable needs
• Cannot support themselves through appropriate employment
• Needs financial assistance during retraining or education
• Serves as custodian of a child whose circumstances make outside employment inappropriate

The 12 statutory factors courts consider under C.R.S. § 14-10-114(3)(a) include each spouse's financial resources, lifestyle during the marriage, distribution of marital property, both parties' income and employment, duration of marriage, age and health conditions, and contribution to the other spouse's career. Notably absent from this list is any reference to marital misconduct or adultery.

How Adultery Affects Child Custody in Colorado

Adultery typically has no effect on child custody determinations in Colorado because the state's best interests standard under C.R.S. § 14-10-124 focuses on the parent-child relationship rather than marital behavior. The statute explicitly states that "the court shall not consider conduct of a party that does not affect that party's relationship to the child." A spouse who commits adultery is not automatically considered a bad parent, and infidelity alone cannot reduce parenting time or decision-making responsibilities.

Colorado courts prioritize the child's safety and physical, mental, and emotional well-being when allocating parental responsibilities. The factors courts consider include:

• The wishes of both parents regarding parenting time
• The child's wishes if sufficiently mature to express reasoned preferences
• The child's interaction and relationships with parents, siblings, and other significant persons
• The child's adjustment to home, school, and community
• The mental and physical health of all parties involved
• Each parent's ability to encourage the child's relationship with the other parent
• The proximity of parents' residences to each other
• Each parent's ability to place the child's needs above their own

However, adultery may affect custody in limited circumstances where the affair directly harmed the children:

• If a parent exposed children to inappropriate behavior with an affair partner
• If a parent prioritized the affair over the children's care and supervision
• If a parent introduced an affair partner who poses a safety risk to the children
• If the affair resulted in domestic violence, substance abuse, or child neglect

In these situations, the adultery itself is not the issue—rather, the parent's conduct that endangered or negatively impacted the children becomes relevant. Courts will restrict parenting time only if it would "endanger the child's physical health or significantly impair the child's emotional development" under C.R.S. § 14-10-129.

Proving Economic Dissipation in a Colorado Adultery Divorce

Proving your spouse dissipated marital assets on an affair requires specific documentation showing when, how much, and on what they spent marital funds. Colorado courts take dissipation claims seriously because they directly impact equitable distribution, but you must establish a clear paper trail connecting the spending to the extramarital relationship. Forensic accountants report that affair-related dissipation averages between $10,000 and $100,000 in contested Colorado divorces where one spouse maintained a long-term extramarital relationship.

Evidence commonly used to prove affair-related dissipation includes:

The timing of dissipation matters significantly in Colorado. Courts are most likely to credit dissipation claims when the spending occurred:

• After the marriage began experiencing serious problems
• During a separation period before filing
• After one spouse filed for divorce
• When the spending spouse anticipated divorce proceedings

Spending that occurred early in a long-term affair may be harder to recover if the marriage continued normally for years afterward, as it may appear that the innocent spouse implicitly condoned the expenditures. However, hidden spending that was only discovered during divorce proceedings can be claimed regardless of when it occurred because the innocent spouse had no opportunity to object.

Criminal Status of Adultery in Colorado

Adultery is not a crime in Colorado, and you cannot face arrest, prosecution, or any criminal penalties for engaging in an extramarital affair. Colorado repealed its criminal adultery statute, joining the majority of states that treat adultery as a private matter between spouses rather than a criminal offense. This means law enforcement will not investigate adultery, and prosecutors cannot bring charges regardless of how flagrant or public the affair may have been.

The decriminalization of adultery reinforces Colorado's no-fault divorce philosophy by treating marital infidelity as a personal and civil matter rather than a criminal one. While adultery can certainly destroy marriages and cause emotional devastation, the legal consequences in Colorado are limited to:

• Potential economic dissipation claims in property division
• Possible custody implications if children were harmed
• Private consequences such as loss of trust and relationship damage

Unlike states that retain criminal adultery statutes (which are rarely enforced), Colorado spouses cannot threaten criminal prosecution as leverage in divorce negotiations, and private investigators' findings about an affair have no criminal relevance.

Timeline and Costs for Adultery Divorce in Colorado

Divorce proceedings in Colorado take a minimum of 91 days from the date of service, regardless of whether adultery is involved, with the median duration being approximately 6 months for uncontested cases. Contested divorces involving dissipation claims related to an affair can extend proceedings to 12-18 months or longer, particularly if forensic accounting is required to trace spending patterns. The mandatory 91-day waiting period under C.R.S. § 14-10-106 cannot be waived even if both parties agree to immediate dissolution.

As of January 2025, the filing fee for divorce in Colorado is $230, increased by the Colorado Legislature under House Bill 2024-1286. Additional costs include the $116 response fee if your spouse files a formal answer and $35-$80 for service of process depending on delivery method. Verify current fees with your local clerk before filing.

Dissipation claims add significant expense to divorce proceedings because they require:

• Detailed financial discovery and document production
• Expert testimony from forensic accountants
• Extended court hearings to present evidence
• Potentially multiple depositions to establish spending patterns

Many Colorado family law attorneys charge $300-$450 per hour, with the median cost of a contested divorce reaching $28,000 or more when complex asset issues are involved.

Residency Requirements for Filing in Colorado

At least one spouse must have been a Colorado resident for a minimum of 91 days before filing for divorce under C.R.S. § 14-10-106(1)(a)(I). This residency requirement establishes Colorado's jurisdiction over your marriage dissolution regardless of where you were married. Physical presence in Colorado with intent to make it your permanent home satisfies this requirement, and temporary absences for work, vacation, or military deployment do not interrupt the 91-day period if you maintain Colorado as your primary residence.

Additional residency considerations include:

• Child custody jurisdiction requires the child to have lived in Colorado for at least 182 consecutive days (approximately 6 months) under C.R.S. § 14-13-201
• If both spouses recently moved to Colorado, you must wait until one spouse establishes 91 days of residency
• Military personnel stationed in Colorado may establish residency for divorce purposes
• Courts may require proof of residency through driver's licenses, voter registration, lease agreements, or utility bills

Protecting Yourself During an Adultery Divorce in Colorado

Discovering a spouse's affair often triggers emotional decisions that can hurt your divorce case, so protecting yourself requires strategic thinking about finances, evidence, and legal representation. Colorado's no-fault system means the affair itself provides no legal advantage, but economic dissipation can be valuable if properly documented. Taking the right steps immediately after discovering infidelity can preserve your rights and maximize your share of marital assets.

Immediate steps to protect yourself:

1. Consult a Colorado family law attorney before taking any action—many offer free initial consultations
2. Gather copies of all financial records including bank statements, credit cards, tax returns, and investment accounts
3. Document any spending you suspect relates to the affair with dates, amounts, and descriptions
4. Open an individual bank account in your name only for essential expenses
5. Change passwords on personal accounts and devices to prevent monitoring
6. Do not move out of the marital home without legal advice—this can affect custody
7. Avoid discussing the affair on social media or with mutual friends who might testify
8. Do not confront your spouse about specific evidence until advised by your attorney
9. Consider credit monitoring to detect new accounts or unusual activity
10. Keep a journal of your spouse's behavior that affects the children, if applicable

What to avoid:

• Do not destroy financial records or hide assets—this constitutes economic misconduct
• Do not empty joint accounts or make large withdrawals without legal advice
• Do not engage in retaliatory behavior or your own affair
• Do not discuss strategy with your children or use them to gather information
• Do not sign any documents your spouse presents without attorney review

FAQs About Adultery and Divorce in Colorado