Delaware Child Support Calculator
Estimate your child support obligations in Delaware using the income shares model. Understand how support is calculated, what factors matter, and what to expect. Updated for 2026.
Delaware uses the Melson Formula, a variation of the Income Shares model, for calculating child support. The Melson Formula is unique to Delaware and accounts for: (1) a self-support allowance for each parent before determining income available for support; (2) the children's primary support needs based on both parents' combined adjusted income; and (3) a Standard of Living Adjustment (SOLA) that allows children to benefit from parents' higher income after basic needs are met. Form 509 is the official worksheet. The formula considers both parents' net incomes after allowable deductions, health insurance premiums, and childcare costs.
Official Delaware calculator →Estimate Your Child Support
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Get Started with Divorce.aiWhat Goes Into the Delaware 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 Delaware 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 Delaware'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 Delaware child support worksheet based on your financial information. Accurate and court-ready.
Modifying Child Support in Delaware
Child support orders are not permanent. You can request a modification when there is a substantial change in circumstances. Common reasons include: