# Unit economics: CAC, LTV, payback (/finance--unit-economics)

/finance--unit-economics is a Claude Code skill in the Business section. Calculates contribution margin, CAC, payback and LTV:CAC from your numbers, with sensitivity tables showing which lever matters most.

- Web version: https://skills.sgomez.dev/en/s/finance--unit-economics
- Section: [Business](https://skills.sgomez.dev/en/business.md)
- Author: Santiago Gómez de la Torre
- License: MIT
- Source: https://github.com/sgomez-dev/claude-skills/blob/main/skills/finance/unit-economics.md
- Updated 10 Jul 2026

## How to ask for it

- `/finance--unit-economics calculate contribution margin per customer`
- `/finance--unit-economics I need to know how many months to pay back CAC`
- `/finance--unit-economics run a sensitivity analysis on our LTV:CAC ratio`

## Install

macOS · Linux:

```
curl -fsSL https://raw.githubusercontent.com/sgomez-dev/claude-skills/main/install.sh | bash
```

Windows:

```
irm https://raw.githubusercontent.com/sgomez-dev/claude-skills/main/install.ps1 | iex
```

Claude Code plugin:

```
/plugin marketplace add sgomez-dev/claude-skills
/plugin install finance-skills@claude-skills-collection
```

## Permissions

- Reads: `*.csv`, `*.json`, `*.md`
- Writes: `unit_economics_*.md`, `unit_economics_*.csv`
- Runs: —
- Network: No
- Destructive: No

## Author's description

Unit economics: contribution margin, CAC payback, LTV:CAC with sensitivity

- [How we review this](https://skills.sgomez.dev/en/methodology.md)