Colorado uses an advisory guideline formula to calculate spousal maintenance (the state's legal term for alimony) under C.R.S. § 14-10-114. The formula applies when the parties' combined annual adjusted gross income is $240,000 or less. For qualifying couples, the advisory maintenance amount equals 40% of the higher earner's monthly adjusted gross income minus 50% of the lower earner's monthly adjusted gross income, reduced by a 75% or 80% multiplier depending on combined income level. Duration ranges from 11 months for a 3-year marriage to indefinite terms for marriages exceeding 20 years. Colorado courts retain full discretion to deviate from these guidelines based on 16 statutory factors, including a new domestic violence factor effective August 6, 2025 under SB25-116.
Key Facts
| Category | Details |
|---|---|
| Filing Fee | $230 (petition); $116 (response). As of January 2025. Verify with your local clerk. |
| Waiting Period | 91 days from date of service (C.R.S. § 14-10-106) |
| Residency Requirement | 91 days domiciled in Colorado before filing |
| Grounds | No-fault only (irretrievable breakdown of the marriage) |
| Property Division | Equitable distribution |
| Governing Statute | C.R.S. § 14-10-114 |
| Income Cap for Guidelines | $240,000 combined annual adjusted gross income |
| Tax Treatment | Not deductible by payor; not taxable to recipient (post-2018 TCJA) |
How the Colorado Alimony Calculator Formula Works
Colorado's alimony calculator formula produces a specific monthly dollar amount based on each spouse's adjusted gross income. Under C.R.S. § 14-10-114(3)(b)(I), the base calculation is 40% of the higher earner's monthly adjusted gross income minus 50% of the lower earner's monthly adjusted gross income. A post-tax multiplier of 75% applies when combined monthly income exceeds $10,000, and 80% applies when combined monthly income is $10,000 or below. The result is capped so the recipient cannot receive more than 40% of the combined monthly adjusted gross income.
This advisory formula applies only when the parties' combined annual adjusted gross income is $240,000 or less ($20,000 per month). The $240,000 cap was reduced from $360,000 by HB18-1385, which took effect on August 8, 2018, to account for the elimination of the federal tax deduction under the Tax Cuts and Jobs Act.
For couples earning above the $240,000 combined threshold, Colorado courts exercise full discretion. There is no formula for high-income cases. Judges evaluate the 16 statutory factors listed in C.R.S. § 14-10-114(3)(c) and determine an amount that reflects the marital standard of living, each party's earning capacity, and the equitable distribution of marital property.
Step-by-Step Calculation Example
Consider a Colorado divorce where Spouse A earns $10,000 per month and Spouse B earns $3,000 per month. The combined monthly income is $13,000, which is below the $20,000 monthly cap. Because the combined income exceeds $10,000 per month, the 75% multiplier applies.
- Calculate 40% of the higher earner's income: $10,000 x 0.40 = $4,000
- Calculate 50% of the lower earner's income: $3,000 x 0.50 = $1,500
- Subtract: $4,000 - $1,500 = $2,500 (base amount)
- Apply the 75% multiplier: $2,500 x 0.75 = $1,875 per month
- Verify the 40% cap: $1,875 is 14.4% of combined income ($13,000), which is below the 40% cap
The advisory spousal maintenance amount in this example is $1,875 per month. Courts can deviate from this figure based on statutory factors, but the advisory amount serves as the starting point for negotiation and judicial determination in approximately 80% of Colorado divorce cases where maintenance is at issue.
How Long Does Alimony Last in Colorado
Colorado's advisory maintenance duration ranges from approximately 11 months for a 3-year marriage to 120 months (10 years) for a 20-year marriage, with indefinite terms possible for marriages exceeding 20 years. Under C.R.S. § 14-10-114(3)(b)(II)(B), the duration multiplier starts at 31% of the marriage length in months at the 36-month mark and increases by 0.165 percentage points per additional month of marriage until it caps at 50% at 150 months (12.5 years).
| Marriage Length | Duration Multiplier | Advisory Maintenance Duration |
|---|---|---|
| 3 years (36 months) | 31% | ~11 months |
| 5 years (60 months) | 35% | ~21 months |
| 7 years (84 months) | 39% | ~33 months |
| 10 years (120 months) | 45% | ~54 months (4.5 years) |
| 12.5 years (150 months) | 50% | 75 months (6.25 years) |
| 15 years (180 months) | 50% | 90 months (7.5 years) |
| 20 years (240 months) | 50% | 120 months (10 years) |
| Over 20 years | Court discretion | Indefinite term possible |
For marriages lasting more than 20 years, the court may award maintenance for a specified or indefinite term under C.R.S. § 14-10-114. The court cannot set a term shorter than 120 months (the 20-year guideline amount) without making specific written findings justifying the reduction. For marriages under 3 years, the advisory duration guidelines do not apply, but the court retains discretion to award maintenance based on the statutory factors.
Types of Spousal Maintenance in Colorado
Colorado recognizes six distinct types of spousal maintenance, each serving a different purpose under C.R.S. § 14-10-114. Temporary maintenance is the most frequently ordered type during pending proceedings, while rehabilitative maintenance is the most commonly awarded type in final divorce decrees. Permanent or indefinite maintenance is reserved for marriages exceeding 20 years or cases involving disability or advanced age.
- Temporary Maintenance: Paid during the divorce proceedings to maintain financial stability until the court enters a final decree. Temporary maintenance terminates automatically when the divorce is finalized and a permanent order is entered.
- Rehabilitative Maintenance: Short-term support designed to help a spouse gain education, job training, or work experience needed for financial independence. Colorado courts favor rehabilitative maintenance as the preferred approach in most cases.
- Durational Maintenance: Support for a fixed period after divorce, calculated using the advisory duration guidelines. The term is based on the length of the marriage and cannot exceed the advisory guideline duration without specific findings.
- Indefinite or Long-Term Maintenance: Typically awarded for marriages exceeding 20 years, or when a spouse cannot become self-sufficient due to age, disability, or chronic health conditions. Indefinite maintenance continues until death, remarriage, or court modification.
- Reimbursement Maintenance: Compensation for a spouse who financially supported the other spouse's education, professional training, or career advancement during the marriage. The amount reflects the supporting spouse's contributions and sacrifices.
- Contractual Maintenance: Agreed upon by the parties in a separation agreement rather than ordered by the court. Contractual maintenance may have different modification and termination rules than court-ordered maintenance, depending on the agreement's terms.
Factors Courts Consider When Calculating Alimony in Colorado
Colorado courts evaluate 16 statutory factors under C.R.S. § 14-10-114(3)(c) when determining whether to deviate from the advisory alimony calculator guidelines. Before reaching these factors, the court must first find that the requesting spouse lacks sufficient property to meet reasonable needs and is unable to support themselves through appropriate employment. The 2025 amendment (SB25-116, effective August 6, 2025) added domestic violence as a factor, bringing the total to 16.
The financial resources of both spouses form the foundation of any maintenance analysis. Courts examine each party's actual and potential income from all sources, including employment, investments, retirement accounts, and rental income. The marital standard of living establishes the baseline for reasonable needs. Colorado courts consider whether either spouse reduced their income or career development during the marriage to serve as a homemaker or primary caregiver.
The duration of the marriage carries significant weight. Marriages lasting 3 to 20 years fall within the advisory guideline range, while marriages exceeding 20 years may warrant indefinite maintenance. The age and health of both parties affect the court's assessment of each spouse's ability to become self-supporting. Significant economic contributions to the marriage, such as funding a spouse's professional degree or paying down the other spouse's premarital debts, also factor into the analysis.
The property division outcome directly impacts maintenance. Under C.R.S. § 14-10-114(3)(c), if one spouse receives a larger share of marital property in lieu of maintenance, the court may reduce or eliminate the maintenance award. This interplay between property division and maintenance is a critical negotiation point in Colorado divorces, particularly for couples with significant real estate, retirement accounts, or business interests.
New Domestic Violence Factor (2025)
SB25-116, signed on May 19, 2025, and effective August 6, 2025, requires Colorado courts to consider whether either spouse has engaged in domestic violence, coercive control, economic abuse, litigation abuse, emotional abuse, physical abuse, or unlawful sexual behavior. This law also extends the disclosure window for protective or restraining orders from 2 years to 5 years prior to filing. The amendment prevents abusers from receiving maintenance funded by their victims and applies to the estimated 15-30% of Colorado divorces involving domestic violence.
Tax Treatment of Alimony in Colorado
Spousal maintenance payments in Colorado are not tax-deductible for the payor and not taxable income for the recipient for all divorce agreements executed after December 31, 2018. This federal rule, established by the Tax Cuts and Jobs Act (TCJA), eliminated the longstanding deduction that allowed paying spouses to reduce their taxable income by the amount of alimony paid. Colorado adjusted its advisory formula in 2018 through HB18-1385 to account for this change.
The 75% and 80% multipliers in the Colorado alimony calculator formula exist specifically because of the TCJA. Before 2019, the payor could deduct maintenance payments, effectively sharing the tax burden with the federal government. Without that deduction, the legislature reduced advisory amounts by 20-25% to prevent payors from bearing the full pre-TCJA maintenance burden on an after-tax basis. Combined monthly income at or below $10,000 uses the 80% multiplier; combined monthly income above $10,000 uses the 75% multiplier.
Divorce agreements executed on or before December 31, 2018, retain the old tax treatment: deductible to the payor, taxable to the recipient. This grandfathering provision applies unless the agreement is later modified and the modification specifically opts into the new tax rules. Colorado courts must consider the tax consequences of maintenance under C.R.S. § 14-10-114(3)(c) and may adjust the advisory amount to equitably allocate the tax burden between the parties.
Modifying or Terminating Alimony in Colorado
Colorado courts can modify or terminate spousal maintenance when there is a substantial and continuing change in circumstances under C.R.S. § 14-10-122. Common grounds for modification include a significant change in either party's income (typically 10% or more), the recipient spouse's cohabitation with a new partner, retirement of the paying spouse, or a serious change in health status. The party seeking modification bears the burden of proving the changed circumstances.
Spousal maintenance automatically terminates upon the death of either party or the remarriage of the recipient spouse under Colorado law. Cohabitation does not automatically terminate maintenance, but it can serve as grounds for modification or termination if the court finds that the recipient's financial needs have decreased as a result. Colorado courts examine the financial impact of the cohabitation rather than applying a blanket termination rule.
Contractual maintenance, agreed upon in a separation agreement, may have different modification rules. If the separation agreement specifies that maintenance is non-modifiable, the court generally cannot change the amount or duration regardless of changed circumstances. Parties negotiating separation agreements should carefully consider whether to include or waive modification rights, as this decision can have significant long-term financial consequences.
Filing for Divorce in Colorado: Residency and Process
Colorado requires at least one spouse to have been domiciled in the state for a minimum of 91 days immediately before filing a petition for dissolution of marriage under C.R.S. § 14-10-106(1)(a)(I). Physical presence combined with the intent to make Colorado a permanent home satisfies this requirement. Temporary absences for work, vacation, or military deployment do not interrupt the 91-day residency count.
The filing fee for a Colorado divorce petition is $230 as of January 2025, with an additional $116 required for the responding spouse's filing. Joint petitions (co-petitions) require only the single $230 fee. Fee waivers are available for parties who qualify based on income. Service of process typically costs an additional $50 to $75, bringing total initial costs to approximately $296 to $421 depending on the filing method. As of March 2026, verify current fees with your local clerk of court.
Colorado imposes a mandatory 91-day waiting period from the date of service before the court can enter a final decree under C.R.S. § 14-10-106(1)(a)(III). No exceptions or judicial waivers exist for this waiting period. Uncontested divorces with full agreement on all issues, including maintenance, can be finalized shortly after the 91-day period expires. Contested divorces involving disputes over spousal support, property division, or parenting responsibilities typically take 9 to 14 months from filing to final decree.
Contested vs. Uncontested Divorce: Cost and Timeline Comparison
The total cost and duration of a Colorado divorce depend primarily on whether the parties agree on spousal maintenance and other key issues. Uncontested divorces where both spouses agree on maintenance terms, property division, and parenting can be completed for as little as $500 to $2,500 in total costs. Contested divorces requiring litigation over maintenance calculations can cost $15,000 to $50,000 or more per party, with complex high-income cases exceeding $100,000.
| Factor | Uncontested Divorce | Contested Divorce |
|---|---|---|
| Filing Fees | $230 - $346 | $230 - $346 |
| Attorney Fees | $500 - $2,000 | $10,000 - $50,000+ |
| Expert Witnesses | Rarely needed | $2,000 - $10,000 (vocational, financial) |
| Timeline | 3 - 5 months | 9 - 18 months |
| Maintenance Calculation | Advisory guidelines accepted | Full litigation of statutory factors |
| Total Estimated Cost | $500 - $2,500 | $15,000 - $100,000+ |
Using a spousal support calculator to estimate the advisory maintenance amount before negotiations begin can help parties reach agreement faster. When both spouses understand the likely range of maintenance under the Colorado formula, settlement becomes more achievable. Mediation is another cost-effective option, with Colorado mediators typically charging $200 to $400 per hour for sessions lasting 2 to 8 hours.
Frequently Asked Questions
How is alimony calculated in Colorado?
Colorado calculates advisory maintenance using a formula under C.R.S. § 14-10-114: 40% of the higher earner's monthly adjusted gross income minus 50% of the lower earner's monthly income, multiplied by 75% (or 80% if combined monthly income is $10,000 or below). The formula applies when combined annual income is $240,000 or less.
How long does alimony last in Colorado?
Advisory maintenance duration ranges from 11 months for a 3-year marriage to 120 months for a 20-year marriage under C.R.S. § 14-10-114(3)(b)(II)(B). The multiplier starts at 31% of the marriage length at 36 months and caps at 50% at 150 months (12.5 years). Marriages over 20 years may receive indefinite maintenance.
Is alimony taxable in Colorado?
Spousal maintenance is not tax-deductible for the payor and not taxable income for the recipient under the Tax Cuts and Jobs Act for all divorce agreements executed after December 31, 2018. Colorado adjusted its advisory formula with 75% and 80% multipliers through HB18-1385 to account for the elimination of the federal tax deduction.
Can alimony be modified in Colorado?
Colorado courts can modify maintenance when there is a substantial and continuing change in circumstances under C.R.S. § 14-10-122. Common grounds include a 10% or greater change in income, the recipient's cohabitation, the payor's retirement, or a serious health change. Contractual maintenance may be non-modifiable if the separation agreement specifies.
What is the income cap for the Colorado alimony formula?
The Colorado advisory maintenance formula applies only when the parties' combined annual adjusted gross income is $240,000 or less ($20,000 per month). This cap was reduced from $360,000 in 2018 by HB18-1385. For couples earning above $240,000, courts have full discretion to determine maintenance based on the 16 statutory factors.
Does cohabitation end alimony in Colorado?
Cohabitation does not automatically terminate spousal maintenance in Colorado. However, it can serve as grounds for modification or termination under C.R.S. § 14-10-122 if the paying spouse proves the recipient's financial needs have decreased. Courts examine the economic impact of cohabitation rather than applying a blanket termination rule.
How does domestic violence affect alimony in Colorado?
SB25-116, effective August 6, 2025, requires Colorado courts to consider domestic violence, coercive control, economic abuse, and litigation abuse when determining spousal maintenance. The law extends the protective order disclosure window from 2 to 5 years and prevents abusers from receiving maintenance funded by their victims. An estimated 15-30% of Colorado divorces involve domestic violence.
What are the residency requirements for divorce in Colorado?
Colorado requires at least one spouse to have been domiciled in the state for a minimum of 91 days immediately before filing under C.R.S. § 14-10-106(1)(a)(I). A mandatory 91-day waiting period runs from the date of service before the court can finalize the divorce. No judicial waivers exist for this waiting period.
How much does it cost to file for divorce in Colorado?
The filing fee for a Colorado divorce petition is $230 as of January 2025 (HB 2024-1286). The responding spouse pays $116 to file a response. Joint petitions require only the $230 fee. Service of process adds $50 to $75. Fee waivers are available for qualifying low-income parties. As of March 2026, verify current fees with your local clerk.
What happens if our income exceeds $240,000?
When the parties' combined annual adjusted gross income exceeds $240,000, the Colorado advisory maintenance formula does not apply. Courts exercise full discretion based on the 16 statutory factors in C.R.S. § 14-10-114(3)(c), including marital standard of living, each party's earning capacity, property division, age, health, and contributions to the marriage.