# Break Even Calculator Ecommerce

> Calculate ecommerce break-even thresholds using price, cost, shipping, ad spend, and overhead assumptions so operators can make launch and scale decisions with clearer downside limits.

- Skill: `leooooooow/break-even-calculator-ecommerce` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add leooooooow/break-even-calculator-ecommerce`
- Raw SKILL.md: https://api.skillmd.com/api/skills/leooooooow/break-even-calculator-ecommerce/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: Leooooooow (https://skillmd.com/u/leooooooow)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/leooooooow/break-even-calculator-ecommerce

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# Break-even Calculator Ecommerce

Calculate the real no-loss line before deciding whether to launch harder, discount harder, or scale paid traffic.

## Use when

- You need a break-even view before launching or scaling a product
- A team is changing price, discount, bundle, or free-shipping policy
- Paid acquisition is growing but true profitability is unclear
- Margin pressure is increasing and you need a decision baseline fast

## Do not use when

- You need full accounting, tax treatment, or cash-flow modeling
- Core inputs are missing and nobody can provide reasonable assumptions
- The task is valuation, forecasting, or board-level finance reporting
- You only want gross revenue math without cost realism

## Inputs

- selling price
- COGS / unit cost
- shipping, packaging, pick-pack, processing fees
- payment fees / platform fees / marketplace fees
- discount assumptions
- refund / return drag assumptions if known
- ad spend, CPA, CAC, or target ROAS inputs
- fixed overhead if relevant to the decision

## Workflow

1. Separate variable cost from fixed cost.
2. Calculate contribution margin per order.
3. Estimate break-even units, break-even CPA, and/or break-even ROAS.
4. Show how pricing or shipping policy changes move the threshold.
5. Highlight the cost inputs that most strongly pressure profitability.
6. Translate the math into a launch / hold / scale decision lens.

## Output

1. Core assumptions table
2. Break-even results
3. Key thresholds: units, CPA, ROAS, margin floor
4. Sensitivity notes
5. Recommended decision framing

## Quality bar

- Math must be explicit and reviewable
- Variable vs fixed costs must stay separate
- Output must support action, not just produce one number
- Assumptions with low confidence must be labeled clearly
- Results should help a team avoid fake-profit decisions

## What better looks like

Better output does more than say “your break-even is X.”
It helps decide what to do next:
- whether the offer is viable
- how much ad room exists
- whether discounting breaks the model
- which cost lever matters most
- whether the business is near scale-ready or still too fragile

## Resource

See `references/output-template.md`.