# What is eCommerce P&L?

What is eCommerce P&L? A financial report detailing all of a store's revenue and expenses.

## How it works in practice

A P&L is the financial-health 'movie.' A balance sheet is a photo (a moment in time). A P&L is motion (over a period). Without a P&L, you manage by feel. With one, you manage by facts. Every store owner needs a monthly P&L.

## Related metrics

- Net Profit Margin — derived from the P&L
- Gross Margin — a line item in the P&L
- COGS — a gross cost line in the P&L
- Cash Flow — complements the P&L

## Common misconception

'A P&L is accounting for accountants.' A simple eCommerce P&L: Revenue - COGS - Variable Marketing - Fixed Costs = Net Profit. 10 lines. A store owner who never checks the monthly P&L is flying blind. 30 minutes/month gives full business awareness.

## How to fix it

No P&L? Build one now: (1) revenue — from GA4 or your platform, (2) COGS — from supplier invoices, (3) marketing — from ad platforms, (4) salaries + rent + platform fees, (5) = net profit. You don't need accounting software — you need Excel. Basic version: 1 hour.

## Real-world example

Cosmetics store: revenue $70K/month, never built a P&L. Built one for the first time: COGS $24K, marketing $17K, salaries $10K, fees $5K, rent $2K = expenses $58K. Net: $12K (16%). Discovered marketing was 25% of revenue — above target. Cut $3.4K — net rose to $15K.

## Where to start

A monthly P&L is not optional. Set a 'P&L Day' — the 5th of every month, half an hour, summarizing the prior month. After 3 months, you'll know which decisions affect the bottom line.

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Category: Finance · From the [Jimmy OS KPI Glossary](https://jimmy-os.com/glossary/kpi.md) · Source page: https://jimmy-os.com/glossary/kpi/ecommerce-p-l