Notebook 04 / Supply & purchasing
Compare an early-pay discount with a simple funding cost for bringing payment forward.
02 / Live working sheet
Owner’s next step Have the budget owner confirm available cash before using the discount.
Calculations and exports run on this device.
03 / Calculation notes
Uses a 365-day simple rate on the discounted payment. Currency, taxes, compound interest and liquidity constraints are excluded.
Worked example
Indicative net saving · €77.96
04 / Original adaptation
A person reviews the output and handles exceptions before buying. Independent application for purchasing administrator teams. The figures are editable examples created for this worksheet.
Greg Isenberg · 13 Businesses for the Age of AI ↗JB Codex / Optional paid help
Map one repetitive job, agree its inputs and approval point, run an example and hand over a tested template. External systems are scoped separately. Your enquiry goes to JB Codex for review.
€149 one-time pilot after scope agreement
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