# Financial Calculator

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

- Skill: `dkyazzentwatwa/financial-calculator` (Agent Skill, multi-file: 4 files)
- Install (CLI): `npx skillmds@latest add dkyazzentwatwa/financial-calculator`
- Raw SKILL.md: https://api.skillmd.com/api/skills/dkyazzentwatwa/financial-calculator/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: dkyazzentwatwa (https://skillmd.com/u/dkyazzentwatwa)
- Updated: 2026-09-09
- Page: https://skillmd.com/skills/dkyazzentwatwa/financial-calculator

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# 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.