Know your real profit on
Amazon, Walmart & eBay
Choose Your Selling Marketplace
Explore dedicated fee and profit calculation hubs tailored to each platform
Amazon Marketplace
FBA profit, referral fees, inbound placement, ACoS, and 1P Vendor tools.
Walmart Marketplace
WFS vs Self-Ship, category referral price breaks, and storage fee solvers.
eBay Marketplace
Final Value Fees (FVF), eBay Store subscription break-even, and promoted ads.
Why Marketplace Sellers Trust Our Tools
Designed specifically to solve complex fee calculations without hidden costs
Built on current 2026 fees
Marketplace fee schedules change multiple times per year. Every rate in our suite is updated and completely visible, editable, and transparent.
Every fee, not just the obvious ones
Inbound placement fees, low-inventory-level surcharges, and aged-inventory penalties that basic calculators ignore are fully modeled here.
Free and instant
No signups, no credit card trials, and no account authorization required. Results calculate instantaneously right inside your browser as you type.
Built by marketplace operators
Created by active e-commerce brand managers who run multi-channel accounts daily, not a generic software template.
Built for Every E-Commerce Business Model
Tailored tools whether you sell private label, arbitrage, or 1P Vendor Central
Private-Label FBA
Model product margins, FBA size tiers, and target PPC ACoS bids.
Walmart WFS Sellers
Compare WFS fulfillment fees vs self-ship freight costs.
eBay Resellers
Calculate category FVF, store discounts, and promoted ad caps.
Agencies & Consultants
Audit client catalog profitability and PPC break-even limits.
Amazon 1P Vendors
Audit Vendor Central Net PPM %, chargebacks, and co-op terms.
How It Works in 3 Simple Steps
Fast, accurate profit modeling in under 30 seconds
Pick your marketplace
Select Amazon, Walmart, or eBay to automatically load official 2026 fee schedules and category rules.
Enter your numbers
Input retail selling price, unit manufacturing COGS, shipping expenses, and optional advertising targets.
See true profit & break-even
Get immediate net profit figures, margin percentages, ROI ratios, break-even prices, and exportable reports.
What Changed in 2026 Fee Schedules?
Marketplaces introduced critical fee modifications that directly impact seller margins. Our suite models all new rules:
Updated split-shipment rules. Calculate minimal split vs Amazon-optimized receiving center fees.
Evaluates historical 30-day and 90-day supply ratios to identify ASIN fee risk.
Models new-seller promotional savings up to 75% off standard category referral rates.
Most Popular Calculators
Top-used tools across Amazon, Walmart, and eBay
FBA Profit Calculator
Full per-unit net profit accounting for referral fees, FBA size tiers, storage, and COGS.
ACoS Calculator
Calculate Advertising Cost of Sale (ACoS %) and Cost Per Acquisition (CPA) targets.
Amazon Referral Fee Calculator
Lookup official 2026 category referral fee percentages, price breaks, and minimums.
Walmart Profit Calculator
Model WFS fulfillment vs self-ship profit across 30 Walmart categories.
eBay Final Value Fee (FVF)
Calculate exact Final Value Fees, store subscription discounts, and per-order fees.
Break-Even ACoS Calculator
Determine the maximum ACoS limit your product can tolerate before incurring losses.
Transparent Pricing for Every E-Commerce Business
Marketplace selling shouldn't require guessing at complex fee structures. We believe accurate, fast, and transparent fee calculators should be freely available to every seller — from first-time entrepreneurs to 8-figure brand operators.
Frequently Asked Questions
Everything you need to know about our free marketplace calculators