ROI Estimator Skill

Every "should we spend on this?" decision needs a defensible number. This skill estimates the return — ROI %, payback period, and a simple NPV that accounts for the time value of money — from costs and expected benefits, with the assumptions stated and a sensitivity check, so a business case survives the first sceptical question instead of collapsing.

Required Inputs

Ask for these only if they aren't already provided:

• Costs — upfront cost, and any ongoing/recurring cost (per period).
• Benefits — the expected gain per period (revenue uplift, cost saved, time saved × loaded rate). Quantify; if it's an estimate, say so.
• Time horizon — over how many periods to evaluate (e.g. 3 years).
• Discount rate — for NPV (default ~10%); state it.

Output Format

ROI: [investment]