E-commerce Profit Calculator
Work out your net profit per sale after product cost, marketplace fees, shipping and ad spend.
Your results
Calculation breakdown
- Net profit
- Selling price − Product cost − Marketplace fee − Shipping − Ad spend
- Net margin
- (Net profit ÷ Selling price) × 100
Worked example
A $50 product with $15 cost, $6 fee, $8 shipping and $4 ad spend leaves $17 net profit, a 34% margin.
Assumptions
- Enter GST-exclusive figures for a consistent comparison.
- Ad spend should be allocated per unit sold, not total campaign spend.
- This is a per-sale estimate, not a full business profit and loss.
How this calculator works
This calculator subtracts product cost, marketplace fees, shipping and advertising cost from your selling price to reveal true profit per unit. Use it to check whether a product is actually worthwhile once every cost is accounted for.
Frequently asked questions
What costs should I include?
Include your product cost, any marketplace or payment fees, shipping you pay, and advertising spend attributable to the sale.
Does this include GST?
No, enter GST-exclusive figures, or use the GST-Inclusive E-commerce Pricing calculator for GST-inclusive pricing.
Why is my margin lower than expected?
Marketplace fees and ad spend often add up to more than sellers expect — check each cost individually to find where margin is being lost.
Editorial review and responsibility
Reviewed by the CalcAussie editorial team on 21 September 2026. Review scope: Method, Australian terminology, material assumptions, source links and user-facing limitations.
Calculator results remain estimates based on the figures entered. Check material decisions against current official information and report a suspected error so it can be reproduced and corrected.
Results are estimates only and are not financial, tax, legal or credit advice.