Changing a Parenting Plan in Tennessee: What a “Material Change in Circumstances” Really Means

Disclaimer: This post is for general informational purposes only and does not constitute legal advice. If you or someone you know is facing a family law matter, consult a licensed Tennessee attorney immediately.

The parenting plan a court enters at the end of a custody case is built around the family as it exists on that day. Children grow, parents change jobs and move, school schedules shift, and an arrangement that fit a four-year-old often makes no sense for a teenager.

When that happens, parents frequently assume they can simply work out a new schedule between themselves, or that the plan is more of a guideline than a rule. A Tennessee parenting plan is a court order, and changing it requires going back to court and meeting a specific legal standard.

That standard is the material change in circumstances test, and Tennessee law in T.C.A. § 36-6-101 actually applies two versions of it depending on what a parent is trying to change. Asking the court to change which parent is the primary residential parent is a heavier lift than asking the court to adjust the residential schedule, and knowing which standard applies to your situation tells you a great deal about how hard the case will be.

Here is how the two standards work and what they mean for a parent who needs a plan to change.

A Parenting Plan Is a Court Order, Not a Suggestion

The starting point is that the existing plan stays in force until a court replaces it. Parents are free to cooperate and deviate informally when life requires it, but those informal arrangements are not enforceable, and a parent who has been allowing extra time can stop at any moment and fall back on the order. If parents agree on a permanent change, they still have to put it in a modified plan and have the court approve it, because only a court order can actually change a court order. Relying on a handshake agreement leaves both parents exposed, which is why even agreed changes are worth formalizing.

Two Different Standards Under T.C.A. § 36-6-101

The single most useful thing to understand about modification is that Tennessee treats a change to the residential schedule differently from a change to the primary residential parent. Both changes start from the same statutory test, a material change of circumstance proven by a preponderance of the evidence, and neither one requires proof that the child faces a substantial risk of harm. In practice, though, the bar for moving the primary residential parent designation is considerably higher than the bar for adjusting the schedule, and the reasons for that difference are worth understanding before filing anything.

Standard 1: Changing the residential schedule

When a parent wants to adjust the residential parenting schedule, meaning how the child’s time is divided without changing who the primary residential parent is, T.C.A. § 36-6-101(a)(2)(C) sets a relatively low bar.

The parent has to prove, by a preponderance of the evidence, a material change of circumstance affecting the child’s best interest, and the statute makes a point of saying that this does not require a showing of a substantial risk of harm to the child. The statute gives examples of what can count, including significant changes in the child’s needs over time such as those that come with age, significant changes in a parent’s living or working conditions that meaningfully affect parenting, a parent’s failure to follow the existing plan, or other circumstances that make the current plan no longer in the child’s best interest.

Tennessee courts and statutory amendments make clear that a parent does not have to prove that the change was something nobody could have anticipated when the original plan was entered. The natural fact that a child gets older, or that a parent’s work schedule shifts, can be enough in some circumstances.

Standard 2: Changing the primary residential parent

Asking the court to change who the primary residential parent is, which is what most people mean when they talk about changing custody, is governed by T.C.A. § 36-6-101(a)(2)(B). The statutory language tracks the residential schedule standard closely: the parent has to prove a material change of circumstance by a preponderance of the evidence.

A material change can include a parent’s failure to adhere to the parenting plan, and the statute does not require a showing of substantial risk of harm here either. The difference between the two shows up in how Tennessee courts apply them. Because moving the primary residential parent designation is a far greater disruption to a child’s stability than adjusting a schedule, courts treat it as a higher bar and look for a genuinely significant change rather than the ordinary adjustments that come with raising a child.

Some examples that meet this bar include, but are not limited to, failures to adhere to the parenting plan or an order of custody and visitation, or circumstances that make the parenting plan no longer in the best interest of the child.

The Two-Step Process for Changing Residential Schedule

Under Standard 1, the court requires a parent to show that there has been a material change in circumstances and it is in the best interest of the child that the residential schedule be modified.

The Court first decides whether the parent has proven a material change in circumstances under the right subsection. If the answer is no, the inquiry ends and the existing plan stays in place. Only if the parent clears that first step does the court move to the second, where it reapplies the best interest factors in T.C.A. § 36-6-106 to decide what modified arrangement actually serves the child. A strong story about a material change is not enough on its own; the proposed change still has to be the one that fits the child’s best interest.

What this means if you are considering a modification

The practical takeaway is to be precise about what you are actually asking for. A parent who needs the weeknight schedule adjusted because the child started high school and has new activities is working under the lower schedule-modification standard and has a realistic path. A parent who wants to become or modify the primary residential parent is taking on the heavier burden and needs to be ready to show a substantial change, not just ordinary friction. Framing the request correctly from the start, and gathering evidence aimed at the standard that actually applies, is what separates a modification that succeeds from one that gets dismissed at the first step.

Frequently Asked Questions About Modifying a Parenting Plan in Tennessee

How often can a parenting plan be modified in Tennessee?

There is no fixed waiting period or limit on how often a plan can be modified, but every modification requires proving a material change in circumstances under T.C.A. § 36-6-101. A court will not revisit a plan simply because time has passed or because a parent is unhappy with it, so the practical limit is whether something has actually changed since the last order.

Is it easier to change the schedule than to change custody?

Generally, yes. Both standards use the same material-change test and neither one requires showing a substantial risk of harm, but Tennessee courts apply a much lower threshold to adjusting the residential schedule under T.C.A. § 36-6-101(a)(2)(C) than to changing the primary residential parent under subsection (a)(2)(B). The right starting point is identifying which of the two you actually need to change.

Does the other parent have to agree to a modification?

No. If the other parent agrees, the parents can submit a modified plan for the court’s approval, which is faster and less expensive. If the other parent does not agree, the parent seeking the change can still petition the court and prove a material change in circumstances and that the modification serves the child’s best interest.

Can I modify the plan if the other parent keeps violating it?

Possibly. The statute identifies a parent’s failure to adhere to the parenting plan as a circumstance that can support a finding of material change under T.C.A. § 36-6-101. Persistent violations are worth documenting, because a clear record of what happened and when is far more persuasive to a court than a general complaint that the other parent does not follow the plan.

Will my child getting older justify a change by itself?

Changes tied to a child’s age can count toward a material change in the residential schedule, because the statute specifically lists significant changes in the child’s needs over time, including those relating to age. Whether age alone is enough depends on how much the child’s needs have actually shifted; a court is looking for a meaningful change in circumstances, not simply the passage of birthdays.

Do we have to go back to court if both parents agree to a change?

Yes, if you want the change to be enforceable. An informal agreement between parents does not alter the existing court order, and either parent can revert to the original plan at any time. To make an agreed change binding, the parents must submit a modified parenting plan, and the court must approve it.

The Stakes Are Higher Than Most People Realize

A parenting plan governs the day-to-day life of a family for years, and the difference between the two modification standards often decides whether a case is worth filing at all. Parents who misjudge which standard applies, or who try to change the plan informally and assume it will hold, can lose time and ground that is hard to recover. Getting clear early about what you are asking the court to do, and what you will have to prove to get it, is the foundation of a modification that actually works.

Carolanne King (Partner) and Marissa Knight (Associate) are both attorneys at Freeman & Fuson in Nashville, Tennessee, handling divorce, custody, and parenting plan modifications across Middle Tennessee. If you need to change an existing parenting plan or are facing a petition to modify yours, call our office at (615) 298-7272.

This article is intended for general informational purposes and is not legal advice. Every situation is different. Please consult an attorney regarding your specific circumstances.