How this estimate is calculated
The tool follows the structure of Florida's guidelines: it combines both parents' monthly net incomes, looks up the basic support obligation in the statutory schedule (§ 61.30(6), which runs from $800 to $10,000 of combined net income, with statutory percentages applied above $10,000), and allocates that obligation in proportion to each parent's share of combined income. When each parent has at least 20% of the year's overnights — 73 nights — it applies the substantial time-sharing "gross-up": the obligation is multiplied by 1.5, cross-multiplied by each parent's overnight percentages, and offset.
What it deliberately leaves out
Net income itself (the statute's list of deductions from gross), child care and health insurance add-ons, retroactive support, deviations, and imputed income for a voluntarily underemployed parent. Any of these can move the real number substantially — which is why the estimate is a starting point for a conversation, not a figure to write into an agreement. For the full picture, read the child support practice page, then have Shelley run the exact calculation.