How Tennessee Calculates What Parents Owe

Tennessee Bases Support on Combined Parental Income

Child support in Tennessee is not calculated using a flat percentage or a simple guess. Under Tennessee Code Annotated Section 36-5-101, the state uses an income shares model, which combines both parents’ adjusted gross incomes, looks up a basic child support obligation on a statutory schedule based on that combined income and the number of children, and then divides that obligation proportionally based on each parent’s share of the total. Tennessee Department of Human Services rules work alongside the statute to fill in the details of exactly how each step of the worksheet gets calculated.

Why This Model Differs From a Simple Percentage

The underlying idea behind the income shares model is that a child should receive the same proportion of parental income they would have received if both parents lived in the same household. This means the calculation is not just about the paying parent’s income in isolation. A parent earning a smaller share of the combined household income generally owes a smaller share of the support obligation, while a parent earning the larger share carries the larger portion, regardless of which parent has primary custody. This approach differs sharply from states that calculate support based solely on the non-custodial parent’s income, since Tennessee looks at both parents’ financial pictures together from the start.

What Counts as Income Under the Guidelines

Tennessee defines income broadly for child support purposes, which can genuinely surprise parents who assume that only a regular paycheck counts toward the calculation. Categories that typically factor into the calculation include:

• Wages, salaries, commissions, bonuses, and any overtime pay earned during a typical work year
• Self-employment income calculated after allowable business expenses have been deducted from gross receipts
• Social Security benefits, pensions, and any retirement account distributions received during the year
• Rental income, capital gains, dividends, and other similar investment income earned throughout the year

A Franklin child support lawyer can help make sure all sources of income are properly documented and accounted for from the start, since omitting even one category can meaningfully skew the final support figure.

How Parenting Time Adjusts the Final Number

The basic obligation calculated from the schedule is not always the final number a parent pays. The team at Patterson Bray PLLC works through how parenting time credits, health insurance premiums, and work-related childcare costs each adjust the guideline amount, since these adjustments can shift the final support figure meaningfully in either direction depending on the specifics of a parenting plan. A parent who exercises significantly more overnight parenting time than the guideline formula anticipates can see a meaningful reduction in their calculated obligation as a result.

Why a Deviation From the Guidelines Sometimes Makes Sense

Tennessee treats the guideline calculation as a rebuttable presumption, meaning courts generally follow it unless a party shows that doing so would be unjust or inappropriate given the specific facts of the case. A Franklin child support lawyer can help identify circumstances, such as extraordinary medical or educational expenses, that might justify asking a court to deviate from the standard guideline amount. Courts do not grant these deviations lightly, so building a documented case for one takes more than simply asserting that the guideline number feels too high or too low.

Making Sure the Calculation Reflects Reality

Because the income shares model depends so heavily on accurate income figures from both parents, a support order built on incomplete or outdated financial information can end up unfair to one side or the other for years until it is modified. Reviewing both parents’ full financial picture carefully before a number is finalized helps avoid having to revisit the calculation later, once a parent’s true income becomes clear after the fact.

If you are working through a child support matter in Franklin, speak with our team about how the guidelines might apply to your specific situation.