Tax Dependency and the “Proportional Income” Rule
A common misconception in divorce is that the “custodial parent” (the one with whom the child lives most of the time) automatically gets the tax deduction. While this may be the IRS default, Colorado law (C.R.S. § 14-10-115(12)) operates differently.
1. The Colorado Standard: Proportionate Income
In Colorado, the court allocates tax dependency exemptions based on each parent’s percentage of the total combined income, rather than where the child sleeps.
2. Practical Examples
| Scenario | Financial Breakdown | Tax Allocation |
|---|---|---|
| Equal Income | Mom and Dad both earn $50,000. | Parents typically alternate years (e.g., Mom even years, Dad odd years). |
| Disparate Income | Mom earns $75,000 (75%); Dad earns $25,000 (25%). | Mom claims the child for 3 consecutive years, and Dad claims for 1 year. |
3. The “Child Support” Condition
The right to claim a child is not absolute. Under Colorado law, a parent can only exercise their allocated tax year if they are current on their child support obligations.
- If the paying parent is in arrears (behind on payments) for that tax year, the other parent may be entitled to claim the child instead, regardless of the court-ordered rotation.
4. Modifications
Like child support itself, the allocation of tax exemptions is not permanent. If there is a substantial and continuing change in circumstances—such as a significant raise for one parent or a job loss for the other—either party can petition the court to modify the tax rotation to reflect the new income proportions.
Key Takeaway for Parents
Because Colorado law deviates from standard IRS procedures, it is essential to have a specific “Tax Allocation” clause in your Separation Agreement. This ensures both parties are clear on the rotation and the conditions required to claim the child.