Domain-Specific Financial Calculators: Breakeven, Profitability & Stress Testing

The agricultural brokerage’s core value proposition to farmers is financial analysis: calculating cost of production, projecting profitability across crop years, and stress-testing marketing positions against hypothetical price scenarios. The legacy system’s calculators suffered from incorrect decimal handling (typing 1000 displayed as 999.99), rigid cost-entry fields that didn’t match real-world workflows, and no ability to perform “what-if” scenario analysis. PDF reports generated from these calculators were poorly formatted, often spilling onto unnecessary second pages with broken layouts.

We rebuilt the entire calculator suite with domain-accurate formulas and a modern, interactive UX:

Breakeven Calculator: Dynamic cost item rows (equipment, inputs, land, labor, insurance) with the ability to add custom line items. APH (Actual Production History) auto-populates from operations questionnaire data, eliminating redundant data entry. Hauling costs calculate in cents-per-bushel, drying shrink uses cents-per-point, and interest auto-calculates using the 9-month industry-standard formula from the original Grain Basis methodology. Clone functionality allows managers to quickly create crop-year variations.

Profitability Calculator with Stress Testing: A full “What-If Analysis” panel where managers enter hypothetical futures prices, basis adjustments (including negatives like -0.25), and additional sales. The system recalculates everything in real time, showing current vs. projected side-by-side comparisons for gross revenue, net profit per acre, per crop, and per bushel. Green/red color coding indicates whether a scenario helps or hurts, with a dollar impact summary. Closed options positions (P&L) automatically flow into profitability calculations.

Marketing Plan (“How Am I Doing”): Calculates percent sold for current and prior crop years, bushels remaining to market, and weighted average price across all sales. Data flows automatically from questionnaires through breakeven into the marketing plan and finally into profitability — no re-entry required.

PDF Reports: All 6 report types were redesigned with professional layouts using the WeasyPrint engine. Reports fit cleanly on single pages with proper branding, comma-formatted dollar amounts, and aligned columns. PDF download buttons are available on every relevant screen.