Capabilities
MarginIQ turns a raw cost sheet into a ranked margin ledger. Enter your product costs, sale price and platform — it computes the true per-unit contribution after fees, shipping and returns, then flags the items that look profitable but quietly drain your margin. Works for e-commerce products, freelance day rates, and side-by-side comparisons.
True margin engine
Contribution after platform fees (Etsy, Shopify, Amazon FBA, eBay, TikTok), freight, and return rate — not just price minus cost.
Use: catch loss-making bestsellers before they drain your cash.
Break-even solver
Back-solves the minimum sale price to hit a target margin, accounting for all costs and fees.
Use: set floor prices before a promotion or marketplace deal.
Batch & export
Process multiple SKUs at once and export the full ranked ledger to CSV in one click.
Use: weekly margin review across your entire catalogue.
Freelance rate calculator
Switch to freelance mode to calculate effective day rates after taxes, downtime, and platform cuts.
Use: quote confidently without underselling your time.
Comparator
Compare up to 4 scenarios side-by-side — pricing strategies, platform choices, or cost structures.
Use: decide which marketplace gives you the best net return.
Local history
Every calculation is saved locally in your browser. Revisit past analyses without re-entering data.
Use: track how margin on a product evolved over time.
How it works
Out: net margin €, margin %, break-even price
Benefit: one true number per SKU, per platform
Out: ranked ledger sorted by margin contribution
Benefit: full catalogue overview in seconds
Out: minimum viable sale price
Benefit: safe floor price before any promotion
Out: effective net hourly and annual income
Benefit: quote with confidence, never undersell
.html file. Open locally — no upload, no telemetry, data never leaves your device.
Screenshots
E-commerce margin calculator — Shopify, Etsy, Amazon FBA
Platform comparator — net margin ranked across all marketplaces
Batch SKU ledger ranked by margin contributionFAQ
Nowhere. MarginIQ is a single HTML file that runs entirely in your browser. No account, no upload, no server — your numbers never leave the device. Local history is saved to your browser’s localStorage only.
Etsy, Shopify (native payment), Amazon FBA, eBay, TikTok Shop, and direct sales. Platform fees are editable, so you can adjust for any marketplace or custom commission structure.
Yes. Once downloaded it needs no internet connection. Open the file on a plane, in a warehouse, anywhere. There are no CDN calls or external dependencies.
Yes. Switch to Freelance mode to calculate your effective day rate after taxes, downtime, and platform fees. The comparator lets you run up to 4 scenarios side-by-side.
A single self-contained .html file (84 KB), lifetime access to every future version, and no subscription. Download it, save it anywhere, share it with your team.