If you’re a parent going through a divorce, separation, or a paternity case, child support is probably one of your biggest questions. How much will it actually be? How does Tennessee calculate that number? What happens if the other parent lives out of state or doesn’t have a job? This guide covers it all, from how the calculation works to where to go for official state resources.
This guide is part of our bigger guide to family law in Tennessee, so if you want the larger picture of how child support fits in with everything, that’s a good place to start.
Have questions about child support? Call us at Call us at (931)245-5060, and we’ll walk you through your situation.
Child support is money one parent pays the other to help cover the cost of raising their children, whether the parents were ever married or not. It’s meant to cover a pretty wide range of costs.
Housing and everyday living expenses.
Food and clothing.
Healthcare costs, including insurance premiums and out-of-pocket medical expenses.
Childcare, if a parent needs it to work.
Education-related costs, in some cases.
Extracurricular activities and other costs tied to raising the child.
As Part of a Divorce
Worked out alongside property division and custody.
Through a Paternity Case
Once legal fatherhood is established.
It can also be set up through a standalone child support petition, filed independently of any divorce or paternity case.
Tennessee uses what’s called the Income Shares Model. The basic idea: your child should get roughly the same percentage of parental income they would’ve gotten if the parents were still together. So instead of just looking at one parent’s income, the court looks at both.
This starts with gross income (wages, self-employment income, bonuses, and other sources) and adjusts it for other factors such as other child support already being paid.
Tennessee’s official schedule gives a baseline support amount based on the combined income and the number of children involved.
Each parent’s share of the obligation is based on their percentage of the combined income, so a parent earning 60% of the household’s combined income is generally responsible for 60% of the support obligation.
This is a built-in floor meant to make sure a lower-income parent isn’t left without enough to cover their own basic needs after paying support.
Tennessee’s guidelines include specific adjustments for parents with very low income, so the calculation doesn’t produce an unrealistic obligation for someone who genuinely can’t afford it.
The Basic Child Support Obligation, or BCSO, is the starting number that comes straight off Tennessee’s income schedule based on the parents’ combined income and the number of kids involved. Think of it as the baseline, before anything else gets factored in.
It doesn’t yet account for parenting time, health insurance, or childcare, those come later.
Tennessee’s schedule maps specific combined income ranges to specific baseline amounts, rather than using a flat percentage across all incomes.
Once the BCSO is set, each parent’s share is based on their percentage of the combined income.
Parenting time, health insurance premiums, childcare costs, and other factors get layered on top of the BCSO to arrive at the final support amount.
In short, the BCSO answers “what’s the baseline for a family with this income and this many children,” and everything else in the calculation adjusts that baseline to fit the actual situation.
The BCSO is just the starting point. A number of things can push the final number up or down.
The more overnights a parent has with the children, the more that will lower their support obligation, since they’re covering more day-to-day costs directly. Tennessee has a specific “extraordinary parenting time” adjustment.
Whoever pays for the child’s health insurance usually gets a credit for the cost of that coverage in the calculation.
Work-related childcare expenses generally get added to the obligation and split between the parents based on income share.
If a parent is already legally responsible for other children, whether from a previous relationship or a later one, that can adjust their income available for this support obligation.
Significant educational or medical costs beyond the basics can be added on top of the standard calculation.
In some cases, a court can deviate from the standard calculation entirely if following it strictly would be unfair given the specific facts, though this requires the court to explain its reasoning in writing.
Seeing the math laid out with real numbers can make this easier to follow. Here’s a simplified, hypothetical example, note that the exact figures below are just for illustration, not the actual current Tennessee schedule, since those figures should always be confirmed against the official guidelines or with an attorney.
Combined monthly income: $6,000
Parent A’s share: $4,000 ÷ $6,000 = about 67%
Parent B’s share: $2,000 ÷ $6,000 = about 33%
Hypothetical BCSO from the schedule: let’s say $900 a month for one child at this income level
Parent A’s portion of the BCSO: 67% × $900 = about $600
Parent B’s portion of the BCSO: 33% × $900 = about $300
Now add in a couple of real-world adjustments: childcare costs of $400 a month, split the same way — Parent A owes about $268, Parent B owes about $132. Health insurance premium: Parent B pays $150 a month for the child’s coverage, so Parent B gets a $150 credit against what they owe.
If Parent B is the one paying support (say Parent A is the primary residential parent), Parent B’s total might look like: $300 (BCSO share) + $132 (childcare share) − $150 (insurance credit) = about $282 a month, before any further adjustments for parenting time or other expenses.
This is obviously a simplified version, real calculations also factor in parenting time credits, other children a parent supports, and any extraordinary expenses, but it shows the basic shape of how the numbers move through the formula.
Not really, not in the sense of a hard dollar cap that applies to every family. Here’s how it actually works.
Within the Standard Schedule
For most families, combined income falls within the range covered by Tennessee’s official schedule, and the BCSO comes straight from that table.
Above the Schedule’s Top Range
Once a family’s combined income goes above the highest level the schedule covers, the guidelines don’t produce an automatic number anymore. Court discretion kicks in, but it still has to be justified.
For example, if two parents have a combined monthly income of $6,000, that likely falls squarely within the standard schedule, and the BCSO comes right off the table. But if that combined income were instead $50,000 a month, well above what the schedule is built to cover, a judge would have much more room to decide what’s actually reasonable for that child, rather than mechanically applying the standard formula. Again, these numbers are just for illustration, the real cutoff point is set by Tennessee’s official schedule, which is worth checking directly or through an attorney.
Tennessee reviews and updates its child support guidelines periodically, which is actually required under federal law every few years. These periodic reviews typically look at whether the income schedule still reflects the actual cost of raising children at different income levels, whether the self-support reserve and low-income adjustments still make sense, how extraordinary expenses (educational, medical, special needs) are defined and handled, and how parenting time adjustments are calculated.
Because guideline updates and legal changes can happen, and this guide reflects our understanding when it was written, the best way to get the current, exact rules is to check directly with the Tennessee Department of Human Services’ Child Support Services page or talk with an attorney who can confirm what’s currently in effect for your situation.
There’s no way to get out of child support you actually owe, and trying to dodge it, like hiding income or quitting a job on purpose, tends to backfire badly in court. But there are legitimate ways the guideline calculation can come out lower, and it’s worth understanding them instead of guessing.
Making sure your income is calculated accurately, not overstated.
Getting credit for parenting time you actually have.
Getting credit for health insurance premiums you’re paying for the child.
Making sure deductions you’re entitled to, like support for other children, are properly accounted for.
The honest answer is that the number should reflect your real financial picture and your real involvement with your child, not a strategy to minimize what you owe. An attorney can make sure the calculation is done correctly and fairly.
These costs get layered on top of the Basic Child Support Obligation, and each type is handled a bit differently.
Think daycare or after-school care so a parent can work. These costs generally get added on top of the BCSO and split between the parents based on their share of combined income.
Whoever’s paying for the child’s health insurance coverage typically gets credit for that cost in the calculation.
The costs insurance doesn’t cover, co-pays, deductibles, and out-of-pocket costs, are usually split proportionally between the parents based on income share.
Ongoing costs like monthly insurance premiums usually get built into the regular support calculation, while one-time or unpredictable medical expenses are often handled as they come up.
Yes, Tennessee’s guidelines allow for additional support beyond the base calculation when a child has significant educational or special needs expenses. Common examples include:
Private school tuition, when it’s consistent with what the family would have chosen or afforded together.
Tutoring or academic support, for a child who needs extra help.
Special needs therapy or services, like speech, occupational, or physical therapy.
Costs tied to a disability, including specialized equipment or care.
Significant extracurricular costs, in some cases, if they’re substantial and reasonable.
These additions aren’t automatic. Getting them included usually means showing the court why the expense is reasonable and necessary, and how it fits the family’s circumstances, but the guidelines do leave room for them when the facts support it.
Yes. All states, including Tennessee, follow a law called the Uniform Interstate Family Support Act (UIFSA), which lets child support orders be enforced across state lines. State child support agencies work together on these cases, so a move doesn’t give a parent a way to stop paying.
Wage garnishment, deducting support directly from the paying parent’s paycheck, even if their employer is in another state.
Tax refund interception, both federal and state refunds can be intercepted to cover past-due support.
Driver’s license and professional license suspension, in cases of significant non-payment.
Passport denial, for parents with substantial arrears.
Liens on property, placed on real estate or other assets.
Registering the order in the other state, so that state’s courts and agencies can help enforce it directly.
Because UIFSA standardizes how states cooperate, a parent generally can’t avoid their obligation just by crossing state lines.
Not exactly, courts can’t force someone into a specific job. But if a parent is voluntarily unemployed or underemployed, meaning they could be working but aren’t, or are working well below their real capability, Tennessee courts can “impute” income to them. That means the court calculates support based on what that parent could reasonably be earning, rather than what they’re actually making right now.
To figure out what income to impute, courts typically look at:
What the parent has earned in past jobs.
What kind of work their background qualifies them for.
Whether there are legitimate health limitations affecting their ability to work.
What similar jobs actually pay in the area where the parent lives.
Any professional qualifications that affect earning potential.
Courts look differently at someone who was laid off versus someone who quit specifically to reduce support.
So while the court won’t literally hand someone a job, it also won’t let a parent avoid their obligation just by choosing not to work.
Here’s roughly what setting up child support looks like, step by step.
If the parents were never married, paternity generally needs to be legally established before a support order can be entered.
This can happen as part of a divorce, a paternity case, or through a standalone petition.
Both parents typically need to provide income documentation so the guideline calculation can be run accurately.
Using Tennessee’s Income Shares guidelines, the court (or the parents, if they agree) works out the Basic Child Support Obligation and adjusts it for parenting time, insurance, childcare, and other factors.
Once the amount is agreed on or decided by a judge, it gets entered as an official court order.
A lot of child support gets collected through automatic withholding straight from the paying parent’s paycheck.
If either parent’s income or situation changes significantly down the road, either parent can request a modification of the existing order.
Child support often comes up alongside other family law matters, depending on your situation.
For the bigger picture →
If your child support case is tied to an ongoing or past divorce →
Since custody and parenting time directly affect how support gets calculated →
For updating an existing support order →
At Dahl Family Law, we help parents across Middle Tennessee establish, calculate, enforce, and modify child support, making sure the numbers reflect what’s actually fair and accurate for your family.
Getting the numbers right matters, whether you’re paying or receiving support. At Dahl Family Law, we bring:
A clear, accurate approach to running Tennessee’s Income Shares calculation for your specific situation.
Experience handling imputed income disputes when a parent is voluntarily unemployed or underemployed.
Comfort with interstate enforcement issues when a parent lives outside Tennessee.
A straightforward, honest read on what your case is actually likely to look like, before you’re surprised by a number.
Not entirely on their own. Even when parents agree, Tennessee courts still generally review the agreement against the guideline calculation to make sure it's fair to the child, and significant deviations usually need to be explained and justified to the court.
Tennessee has several enforcement tools, including wage garnishment, tax refund interception, driver's license suspension, and, in serious cases, contempt of court, which can include fines or jail time.
Generally, yes, though it can extend a bit longer if the child is still in high school. Specific circumstances, like a child with disabilities, can also affect when support obligations end.
Sometimes, but it's risky without documentation. Paying directly without a paper trail can make it hard to prove payments were actually made, which is part of why using the state's payment system or another documented method is usually recommended, even between parents who get along.
Whether you’re setting up support for the first time, trying to enforce an order, or dealing with a parent who’s not paying, having the right guidance makes a real difference.
Dahl Family Law provides representation in a wide range of family law matters, including:
This guide is intended for general informational purposes only and does not constitute legal advice. Child support cases are fact-specific, and outcomes depend on the details of your situation. Please consult with a licensed Tennessee family law attorney, or the Tennessee Department of Human Services, regarding your specific circumstances.
