No calculator needed. Here is the whole comparison, in the founder's own example.
A developer constructing a 10-lot subdivision with approximately $250,000 of eligible public fees can have those costs paid through INSITE rather than paying them upfront.
The amount is secured by the property's Special Tax and paid through the county property tax roll over the term. This preserves working capital for land development and home construction while reducing reliance on higher-cost construction capital.
Paying fees yourself on that project: $250,000 in cash at permit, roughly 18 months before your first closing. Through INSITE: fees we pay on your behalf at the permit counter, and your day-one cash into fees is zero. Deal costs are paid on the property tax bill.
Your project runs on your jurisdiction's posted fee schedule, not the example. School fees are excluded from the program at launch. Figures shown are founder estimates for illustration; rates and final numbers are set at term sheet.