Tennessee Child Support Calculator
Estimate your child support obligations in Tennessee using the income shares model. Understand how support is calculated, what factors matter, and what to expect. Updated for 2026.
Tennessee uses the Income Shares Model, which presumes both parents contribute to financial support of the child in proportion to their respective adjusted gross incomes. The Basic Child Support Obligation (BCSO) is determined by combining both parents' adjusted gross incomes and referencing the Child Support Schedule for the number of children. Deviations are allowed for extraordinary expenses. Governed by Tennessee Department of Human Services Guidelines under T.C.A. § 36-5-101.
Official Tennessee calculator →Estimate Your Child Support
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Get Started with Divorce.aiWhat Goes Into the Tennessee Calculation?
Income
Both parents' gross income from all sources:
Deductions
Allowable deductions that may reduce gross income:
Adjustments
Additional factors that can adjust the base support amount:
Get your full financial picture
Divorce.ai's income and expense tracker helps you accurately report your finances for the Tennessee child support worksheet.
How the Income shares Model Works
Determine Combined Income
Add both parents' adjusted gross income together to get the combined income figure.
Look Up Base Obligation
Using Tennessee's guidelines table, find the base child support amount for your combined income and number of children.
Prorate Between Parents
Each parent's share is proportional to their income. If Parent A earns 60% of the combined income, they are responsible for 60% of the obligation.
Apply Adjustments
Add or subtract adjustments for healthcare, childcare, shared parenting time, and extraordinary expenses.
Complete your child support worksheet
Divorce.ai auto-fills the Tennessee child support worksheet based on your financial information. Accurate and court-ready.
Modifying Child Support in Tennessee
Child support orders are not permanent. You can request a modification when there is a substantial change in circumstances. Common reasons include: