Multi-Platform Profit Calculator

What Is the Multi-Platform Profit Calculator?

This free multi-platform profit calculator lets you compare net profit across five major ecommerce platforms — Amazon FBA, eBay, Etsy, Shopify, and TikTok Shop — using a single set of product inputs. Instead of visiting five different calculators, enter your sale price, product cost, and shipping cost once, and instantly see a side-by-side comparison of total fees, net revenue, net profit, and profit margin for each platform.

Each platform charges fees differently: some bundle payment processing into their commission (like eBay's 13.25% all-in Final Value Fee), while others charge it separately (like Etsy's 6.5% + 3% + $0.25). Shopify charges the lowest per-transaction rate at 2.9% + $0.30 but requires self-fulfillment. Amazon FBA charges the highest all-in fees but handles storage, picking, packing, and shipping for you. This calculator breaks all of that down in one view.

How to Use This Calculator

Follow these steps to find your most profitable selling platform:

1. Enter your Sale Price — the price customers pay on the platform (before fees)
2. Enter your Product Cost — your cost of goods sold (COGS)
3. Enter Shipping to Buyer — cost to ship the product to your customer (set to $0 for free shipping)
4. Enter Ad Spend per Sale — your average advertising cost attributed to each sale ($0 for organic traffic)
5. Adjust Platform Settings — select your Amazon category (affects referral fee), FBA fulfillment cost, eBay category, TikTok category, and Shopify plan
6. Read the Results — the green "best profit" badge highlights the highest-profit platform for your numbers

The calculator updates instantly as you adjust any input, so you can experiment with different price points or product costs to see how each platform responds.

Platform Fee Breakdown (2026)

Understanding each platform's fee structure helps you interpret the calculator results:

Real-World Example

Which Platform Is Right for You?

Fee comparison is only one factor. Here's a practical framework for choosing:

Choose Amazon FBA if...

• You want Amazon's 300M+ active buyers and Prime shipping benefits
• You're okay paying a premium for FBA's storage, picking, packing, and 2-day delivery
• You sell products in competitive categories where visibility on Amazon matters
• You want to focus on sourcing and marketing rather than logistics

Choose eBay if...

• You're reselling used, vintage, or collectible items
• You want an all-in fee that includes payment processing at a reasonable rate
• You sell across categories where eBay's buyer base (collectors, deal seekers) overlaps with your products
• You have existing inventory and want a simple fee structure

Choose Etsy if...

• You sell handmade, vintage, or craft products
• You want built-in marketplace traffic from buyers searching for unique items
• Your products command higher margins and can absorb the 10.3% effective fee
• You value Etsy's brand as a destination for creative goods

Choose Shopify if...

• You want full control over your brand, customer data, and checkout experience
• You're willing to handle or outsource fulfillment yourself
• You sell at volume where the 2.9% rate significantly outpaces marketplace fees
• You want to build a long-term brand rather than rely on a marketplace

Choose TikTok Shop if...

• You sell fashion, beauty, or products with strong visual appeal
• You want to tap into TikTok's viral content ecosystem and younger demographic
• You're willing to create content to drive organic traffic
• You can handle fulfillment yourself or through TikTok Fulfillment Service (TFS)

Frequently Asked Questions

Which selling platform gives the highest profit margin?

It depends on your product and fulfillment method. Generally, Shopify (self-fulfilled) has the lowest fees at 2.9% + $0.30 per transaction. TikTok Shop has the lowest category commissions (2–8%) but adds payment processing. Etsy is competitive for handmade goods. Amazon FBA has the highest all-in fees because fulfillment is included. Use this calculator with your actual numbers to find your best platform.

How do I calculate profit margin across different selling platforms?

Profit Margin = (Net Revenue − Product Cost − Shipping to Buyer − Ad Spend) ÷ Sale Price × 100. Each platform deducts different fees from the sale price. This calculator handles all fee structures automatically: Amazon FBA (referral + fulfillment + closing), eBay (Final Value Fee 13.25% all-in), Etsy (6.5% + payment processing), Shopify (2.9% + $0.30 + plan cost/unit), TikTok Shop (commission + payment processing). Enter your numbers once and compare all five platforms side by side.

What are Amazon FBA fees compared to eBay fees?

Amazon FBA all-in fees typically run 17–40% of sale price depending on category and weight. This includes referral (6–17%), fulfillment ($3.22–$6.50/unit), storage ($0.78–$2.40/cu ft), and closing fees ($1.80). eBay under Managed Payments charges 13.25% for most categories — and that includes payment processing. For a $50 product, Amazon FBA might cost $12–18 in total fees while eBay costs ~$6.63. eBay wins on fees alone for most categories.

Is selling on Etsy cheaper than selling on Shopify?

For individual sales, Etsy is often cheaper than Shopify at low volume: Etsy charges ~10.3% effective rate (6.5% + 3% + $0.25 on a $50 sale). Shopify charges ~3.5% per transaction plus your monthly plan. At 200+ sales/month, Shopify's per-transaction rate (2.9%) and unlimited listings can make it cheaper than Etsy's $0.20 listing fee × 200 = $40/month. For a $50 sale, Etsy costs ~$5.15 while Shopify Basic costs ~$1.75 in transaction fees alone.

Which platform has the lowest fees for fashion sellers?

For fashion sellers: TikTok Shop charges 2% commission — the lowest of any major platform. Etsy charges 6.5% transaction + payment processing (~10.3% effective). Amazon FBA for clothing charges 17% referral fee + fulfillment costs (can reach 30–40% all-in). eBay Fashion category charges 12.35% Final Value Fee. Shopify's 2.9% + $0.30 per transaction is competitive but requires self-fulfillment. TikTok Shop and Shopify offer the best margins for fashion sellers who handle their own shipping.

How accurate are these profit calculations?

The calculator uses official 2026 fee schedules from each platform. Results are estimates — actual fees may vary slightly due to promotions, currency conversion, or seller tier discounts. For critical business decisions, verify with each platform's current fee documentation and consider additional costs like returns, refunds, packaging, and your time.