Child support law does not stand still. In 2025, a meaningful wave of states is revisiting the formulas used to calculate how much one parent owes the other each month — and the changes are more significant than a routine cost-of-living tweak. Whether you currently pay or receive support, understanding what is shifting and why can help you prepare before a modification hearing lands on your calendar.
The Move Toward the Income Shares Model
Historically, many states used a "percentage of income" model, where child support was set as a fixed percentage of the paying parent's income regardless of what the receiving parent earns. That approach is increasingly seen as outdated. The income shares model — already used by roughly 40 states — combines both parents' incomes to estimate what the couple would have spent on the child had the family stayed together, then divides that obligation proportionally.
Several states that previously used the percentage model are now moving to income shares through legislative action. The practical effect: in households where the receiving parent earns a solid income, the paying parent's obligation may decrease. Conversely, if the receiving parent earns very little, orders could increase. Courts view this as a more honest reflection of shared financial responsibility.
Remote Work Is Complicating Income Calculations
The widespread shift to remote work has created a new wrinkle in support calculations. A parent who relocated from a high-cost city to a lower-cost state while keeping the same salary now presents a genuine question: should support be calculated on the income itself, or adjusted for the parent's new cost of living? Courts are landing in different places on this, and several states are adding guidance to their statutes.
Remote work also makes it easier for some parents to obscure income by blending personal and business expenses through freelance arrangements. Family law attorneys report a rise in discovery disputes around home-office deductions and business write-offs that reduce reported income on tax returns.
How Gig Economy Income Is Being Treated
Gig work — driving for rideshare platforms, delivering packages, freelancing on project platforms — creates irregular income that does not fit neatly into a pay stub. Updated guidelines in several states now instruct courts to average gig income over 12 to 24 months rather than using a single month's earnings, which can swing dramatically. Some states are also requiring gig workers to submit platform earnings summaries directly, since these are harder to manipulate than self-reported income.
If you or your co-parent earns gig income, expect closer scrutiny going forward. Courts are getting more sophisticated about platform-generated income statements, and the trend is toward counting all consistent earnings regardless of their source.
What to Do If Your State's Guidelines Change
A change in state guidelines does not automatically modify your existing order. You typically must file a formal modification request and show either that a significant change in circumstances exists or that the current order deviates from the new guidelines by a set threshold — often 15 to 20 percent. Check your state's family court self-help resources, and if the deviation is meaningful, consider consulting a family law attorney before filing.
Keeping track of income documentation, support payment history, and expense records is essential when a modification is on the horizon. CoParent.Help (https://www.coparent.help) gives both parents a shared, organized space to log payments, store documents, and communicate clearly — so you walk into any court or mediation session with your records already in order.
Source: CoParent.Help
