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financial-calculator

financial-calculator

github.com/dkyazzentwatwaData & databases124503 installsUpdated 29w ago
Repository

About financial-calculator

financial-calculator is a skill for performing deterministic financial calculations with scripts, rather than ad hoc spreadsheet math. It covers loans, investments, retirement projections, and risk scenarios, with an emphasis on stating assumptions and treating results as calculations rather than personal advice.

Key features

  1. 01Loan and mortgage calculations
  2. 02Investment growth and savings goals
  3. 03NPV, IRR, and payback analysis
  4. 04Retirement and withdrawal projections
  5. 05Monte Carlo-style risk scenarios

Use cases

  1. 01Estimate loan or mortgage payments
  2. 02Evaluate investment returns and payback
  3. 03Project retirement withdrawals under stated assumptions

Install

Copy the command and run it in a terminal.

$npx skills add https://github.com/dkyazzentwatwa/chatgpt-skills --skill financial-calculator

After installing, type/financial-calculatorin Claude Code to confirm it loaded.

Bundled files

References and scripts installed along with SKILL.md.

agents/
openai.yaml
scripts/
financial_calc.py
requirements.txt

Details

From the project README

Financial Calculator

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.

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