Financial Calculator

SkillCommerce & finance

Run loan, investment, NPV, retirement, savings, and risk calculations with schedules and charts. Use for deterministic financial modeling tasks.

Instructions available. Your AI can read the instructions. Execution depends on the setup they require.

Add ahel to your AI once: Claude, ChatGPT, Cursor, Claude Code or Codex. Then ask it to use this.

Then ask your AI: use the Financial Calculator skill

What this skill tells your AI

The instructions your AI receives, as published by dkyazzentwatwa/chatgpt-skills in financial-calculator/SKILL.md and read by ahel’s review.

Use deterministic calculations instead of ad hoc spreadsheet math when the user needs precise financial outputs.

Use This For

  • Loan and mortgage math
  • Investment growth and savings goals
  • NPV, IRR, and payback analysis
  • Retirement projections and withdrawal planning
  • Monte Carlo style risk scenarios

Workflow

  1. Confirm units and assumptions first: rates, compounding, time horizon, taxes, and inflation.
  2. Use scripts/financial_calc.py as the source of truth for the computation.
  3. Return both the answer and the assumptions that materially drive it.

Guardrails

  • Treat outputs as calculations, not personalized financial advice.
  • Surface simplifying assumptions and scenario sensitivity.

Signals

GitHub stars
108
Forks
22
Last commit
Apr 2026

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Item type
skill
Key
financial-calculator-dkyazzentwatwa
Source
github.com/dkyazzentwatwa/chatgpt-skills