Child Support in Tennessee: How Much Will You Owe?

Quick answer: it depends on both parents' incomes, how many children you have, and the parenting schedule. The calculator on this page turns those numbers into a real guideline estimate in about a minute. It is an educational estimate, not legal advice, and the judge always sets the final amount. FamilyCourtHelp.com is a self-help resource, not a law firm.

Wondering how much child support you will owe or receive in Tennessee? The state uses one formula everywhere, so the same math applies in every county. This page explains how it works, lets you run a live estimate, and links to a dedicated page for each county at the bottom.

Tennessee follows the Income Shares model under Tenn. Comp. R. & Regs. 1240-02-04. The court combines both parents' monthly gross incomes, looks up the basic support obligation on the state's guideline schedule for that income level and number of children, then prorates the obligation between the parents according to each parent's percentage share of the combined income.

What counts as income? Tennessee runs the formula on gross income, meaning income before taxes come out. Gross income from all sources including wages, self-employment, bonuses, commissions, severance, pensions, retirement, Social Security, workers' compensation, unemployment, and significant gifts.

Parenting time matters directly in Tennessee: the number of overnights each parent has changes the math itself. Tennessee uses a parenting-time variable that adjusts the basic support obligation based on the number of overnights each parent has with the child. The guideline schedule under Tenn. Comp. R. & Regs. 1240-02-04 starts from a standard arrangement, and a shared-care formula applies when both parents have substantial parenting time. More overnights for the parent paying support generally lowers the obligation, while fewer overnights can raise it. The on-page calculator is only an estimate, so confirm your overnight count and number on the official Tennessee worksheet.

When does it end? Tennessee child support generally ends at age 18 or upon high school graduation, whichever is later, but not past age 19. Continuing support for disabled adult children is available.

Can the amount change later? File a petition in juvenile, chancery, or circuit court, or request review through DHS. A 15% variance creates a presumption of substantial and material change.

If payments fall behind, Tennessee has real enforcement tools. Tennessee DHS enforces through immediate income withholding, tax intercept, license suspension, lien filings, credit reporting, and contempt referrals.

Child support cases in Tennessee are generally handled through the state's Circuit Court, and Tennessee Department of Human Services, Child Support Services runs the state's child support services program. Forms and local practice can vary, so confirm the current details with your local court or the agency.

The calculator on this page is the same live engine behind our full Child Support Calculator. Enter both incomes, the number of children, and the overnight split, and the estimate updates instantly. The full calculator page adds extras like health insurance, child care costs, and saved scenarios.

Bottom line for Tennessee: the guideline number comes from incomes, children, and parenting time. Run the estimate on this page, keep your paperwork honest and complete, and let the court confirm the final amount.

Frequently asked questions

How much child support will I owe in Tennessee?

There is no flat amount. Tennessee uses the Income Shares model under Tenn. Comp. R. & Regs. 1240-02-04, so the number depends on both parents' incomes, the number of children, and the parenting schedule. The calculator on this page gives you a guideline estimate, and the court sets the final amount.

When does child support end in Tennessee?

Age 18, or upon graduation from high school not past age 19, whichever is later.

Can the child support amount be changed later in Tennessee?

Usually yes, when circumstances change enough. A 15% change between the existing order and a new guideline calculation creates a presumption of substantial and material change (7.5% for low-income obligors).

Who handles child support cases in Tennessee?

Cases are generally heard in the state's Circuit Court, and Tennessee Department of Human Services, Child Support Services handles services like locating parents, establishing orders, and collecting payments.