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Loading...
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Margin
💵
Profit / Sale
$0
Enter details below
📊
Margin
0%
🏷️
Marketplace Fees
$0
0% of price
📦
Your Costs
$0
No costs
Product Details
Enter costs to see true profit
Default Marketplace Fees: Listing $0.20 · Transaction 6.5% · Processing 3%+$0.25 · Ads 12-15%
💡 Smart Insights
Actionable tips for your product
Fee Breakdown
| Fee / Cost | Amount |
|---|
Where Every Dollar Goes
Monthly Projections
Profit at different sales volumes
5/day
$0
$0 rev
10/day
$0
$0 rev
25/day
$0
$0 rev
🎯 Profit Goal Calculator
How many sales to hit your income target?
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Sales/Day
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Sales/Month
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Monthly Revenue
Income Milestones
What each income level requires at your current profit
Price Scenario Comparison
Same costs, three different prices
Monthly Revenue at 10 Sales/Day
Bulk Analyzer
Compare margins across your catalog
| Product | Price | Material | Pkg | Ship | Fees | Profit | Margin |
|---|
Revenue Breakdown
Where every dollar goes
Margin at Different Prices
See how pricing affects your margin
Monthly Profit by Volume
At your current profit per sale
Fee Composition
Relative size of each fee
Seller Profit Analysis Report
CreatorSystemLab ·
Summary
Fee Breakdown
Revenue Projections
CreatorSystemLab · Your data never leaves this device.
📖
How To Use This Tool
Everything you need to know to get the most out of your Seller Fee & Profit Calculator Pro
🚀 Getting Started
1
Open in Your Browser
Double-click the HTML file, or right-click → Open With → Chrome, Safari, Firefox, or Edge. That's it — the tool loads instantly.
2
Enter Your Product Details
On the Calculator tab, enter your selling price, material costs, packaging, and shipping. Your profit updates instantly as you type.
3
Explore All 6 Views
Use the sidebar menu to switch between Calculator, Profit Goals, Price Scenarios, Bulk Analyzer, Charts, and Print Report.
4
Save Your Data
Click 💾 Save in the top bar. Your data saves to your browser and will be there next time you open the file.
✨ Features Guide
🌙
Dark / Light Mode
Click the sun/moon icon in the top bar
💱
Currency Selector
USD, GBP, EUR, AUD, CAD — use the dropdown in the top bar
🎯
Profit Goals
Enter a monthly income target → see daily sales needed
⚖️
Price Scenarios
Enter 3 different prices → compare profit side by side
📦
Bulk Analyzer
Add multiple products → compare margins across your catalog
🖨️
Print Report
Click Print to export a professional PDF summary
🏆
Margin Tiers
Bronze (<25%) → Silver (25-40%) → Gold (40-60%) → Platinum (60%+)
🏷️ Marketplace Fees Explained (2026)
Listing Fee — $0.20
Charged per listing, every 4 months on renewal
Transaction Fee — 6.5%
Applied to sale price + shipping charged to buyer
Payment Processing — 3% + $0.25
Payment processing fee on every transaction
Offsite Ads — 12% or 15%
Only on sales from marketplace offsite ads. 15% if under $10K/yr, 12% if over. Set to 0 if not applicable.
🔧 Troubleshooting
File won't open?
Right-click the .html file → Open With → choose your web browser. Don't open with Word, Excel, or text editors.
See code instead of the tool?
You're opening in a text editor. Right-click → Open With → your web browser instead.
Data disappeared?
Click 💾 Save before closing. Data saves to your browser's storage. Clearing browser cache erases saved data.
Looks odd on phone?
This tool is optimized for desktop/laptop. It works on mobile but best on a bigger screen.
Multiple computers?
Copy the file to any computer. Each browser saves its own data separately.
Need internet?
No. Works 100% offline after download. Fonts load from Google but fall back to system fonts if offline.
🔒 Your data never leaves your device. Everything runs locally in your browser. No accounts, no tracking, no cloud. 100% private.