FL-390 is a California family court form used when a party wants to request a simplified modification of an existing child support, spousal support, or partner support order. The simplified modification process is available in cases where support amounts can be adjusted quickly using updated financial information—typically when circumstances have changed in ways that clearly affect the existing support order. FL-390 provides a streamlined way to ask the court to modify support without filing a full Request for Order (FL-300) or going through a more complex process.

The form allows the requesting party to notify the court and the other party that they are seeking a modification based on a change in circumstances, such as loss of employment, a new job, significant change in income, change in timeshare, or new support obligations. FL-390 also allows a parent receiving public assistance or the Local Child Support Agency (LCSA) to request a modification when required by law. This simplified motion is designed to be faster and more efficient when support adjustments can be made without extensive litigation.

FL-390 requires the party to include updated financial information, usually through an Income and Expense Declaration (FL-150) or, in some cases, the simplified Financial Statement (FL-155). This information helps the court recalculate guideline support based on current incomes, health insurance costs, childcare costs, and parenting time. By using FL-390, the court can review new financial data and modify the support order in a straightforward and predictable way.

The form also acts as a notice of motion, meaning it sets a hearing date and informs the other party of when and where the request will be heard. The other party must be properly served and has the right to respond, typically using forms such as FL-320 or updated financial declarations. The simplified modification procedure still requires proper notice and an opportunity for both parties to present information, ensuring the process is fair even though it is streamlined.

In summary, FL-390 is a valuable tool for parties seeking a faster, less complicated way to modify support orders in California. It is designed for situations where support changes can be determined largely through updated financial information and guideline calculations. When completed accurately and supported with current financial disclosures, FL-390 helps the court efficiently adjust support to reflect real-life changes in circumstances.