In 2026, spousal maintenance can usually be modified only when there are changed circumstances that are substantial and continuing, and the court evaluates fairness under the statute. Common qualifying changes include a major income shift, long term disability, or a significant change in financial needs that is not temporary. Short term fluctuations, voluntary underemployment, or choices that look like avoidance can be harder to use as a basis for modification. Colorado’s maintenance statute also lays out factors and guideline concepts the court may consider when setting or adjusting maintenance. The timing of a modification request matters because courts generally modify future installments rather than rewriting the past. A maintenance attorney can help you present credible financial documentation and avoid arguments that the change is self-created or short lived.