The FBA Profit Calculator
that runs 100% offline —
your data never leaves your computer.
One HTML file you double-click — no internet, no cloud, no login.
Every fee calculation runs locally, so your sourcing costs and margins
stay on your machine. 2026 fee tables, US + DE.
✓ Instant download · ✓ No account required after purchase · ✓ Works on Windows, Mac, Linux
Common questions.
Yes, completely. The tool is a single HTML file with all fee data, libraries (PapaParse for CSV, Excel export logic), and UI code bundled inline. There are zero CDN links, zero fetch() calls, zero external requests — verified by automated Playwright browser tests that confirm 0 network requests when the tool is used. Enable airplane mode and it works identically.
The tool includes the full 2026 fee schedule: January 15, 2026 fulfillment fee changes, the 3.5% US fuel & logistics surcharge (active from April 17, 2026), and the 1.5% DE surcharge. All 34 US and 32 DE referral fee categories including tiered categories (Jewelry, Apparel, Watches, Baby, Grocery, Beauty, etc.) are included. When Amazon updates fees again, we'll release an updated version — Gumroad customers get updates included.
The bulk import is limited only by your browser's memory. In practice, 500 products calculate in under a second. The tool includes a CSV template with 8 example products (different size tiers, profit levels, and one deliberate loss product) so you can test the format immediately.
Yes. The marketplace toggle switches between US (amazon.com) and DE (amazon.de) fee tables, currencies ($ vs €), and UI language (English vs German) simultaneously. Both marketplaces have complete referral fee category lists and correct fulfillment fee logic — US uses the standard/bulky/extra-large tier system, DE uses the parcel size system (SmallParcel1 through LargeParcel2).
For each product: size tier (from dimensions + weight), fulfillment fee (including fuel surcharge if active), referral fee (flat or tiered by category), net profit (price minus all costs), margin %, and break-even price. Optional inputs: ACoS / ad spend %, monthly storage fee, SIPP toggle for bulky items. All live-updated on every keystroke.
We update the tool and push a new version to Gumroad. Everyone who purchased gets the update at no extra cost — Gumroad notifies you by email. The fee tables are clearly labeled with their effective date so you always know what version you're running.
Stop paying monthly for a spreadsheet.
One file. Every FBA fee. Both marketplaces. $26 once.
Disclaimer:
This tool is provided as a decision-support aid for Amazon FBA sellers. All calculations are based on publicly available fee schedules and are for informational purposes only. Results are estimates and may not reflect actual Amazon fees, which can change at any time without notice. You are solely responsible for any business or financial decisions made based on this tool's output. Smart Local Tools accepts no liability for errors, omissions, or any outcomes resulting from the use of this calculator.
Go Deeper
Everything about FBA profits —
in one place.
Three focused guides that cover the questions sellers ask most.
