Expense Costs by Platform

Updated July 2026 ยท Expense & Profit Calculator

Overview

Not every cost applies to every platform. This article explains which Expense Costs appear on which platforms so you know exactly what's being factored into each profit calculation.

Shared Platform Costs

Some costs are the same regardless of which platform you're selling on. These appear under Shared Platform Costs and apply across all platforms:

  • COGS (Cost of Goods Sold)

Platform-Specific Expense Costs

The following table shows which Expense Costs apply to each platform:

Expense Cost Group Shopify Amazon Faire TikTok Shop
COGS Total COGS Shared Shared Shared Shared
Labor Total Fulfillment โœ“ โœ“ โœ“ โœ“
Packaging Cost Total Fulfillment โœ“ โœ“ โœ“ โœ“
Shipping Cost to Customer Total Fulfillment โœ“ โœ“ โœ“ โœ“
Customer Service Total Fulfillment โœ“ โœ“ โœ“ โœ“
Handling Fee Total Fulfillment โœ“ โœ“ โœ“ โœ“
Tax Total Tax โœ“ โœ“ โœ“ โœ“
Miscellaneous Cost No Group โœ“ โœ“ โœ“ โœ“
Shopify Payment Fees Total Platform Fees โœ“ - - -
3rd-Party Payment Fees Total Platform Fees โœ“ - - -
Payment Processing Fees Total Platform Fees - - โœ“ -
Commission Fees Total Platform Fees - - โœ“ -
Marketplace Referral Fee Total Platform Fees - - - โœ“
Amazon Referral Fees Total Platform Fees - โœ“ - -
FBA Fulfillment Fees Total Platform Fees - โœ“ - -
Closing Fees Total Platform Fees - โœ“ - -
FBA Storage Fee Total Platform Fees - โœ“ - -

Where Platform Fees Come From

Platform fees aren't sourced the same way on every platform:

  • Shopify and Faire - you configure these fees yourself in Platform Settings, entering a percentage and/or a fixed amount for each fee. The calculator uses those values.
  • Amazon - the Referral, FBA Fulfillment, Closing, and FBA Storage fees are synced automatically from Amazon (fee estimates from Amazon's API, plus the monthly storage report). You don't enter them by hand.
  • TikTok Shop - the Marketplace Referral Fee is calculated automatically from the product's TikTok category, so it isn't entered manually either.

To review or adjust the fees you control, go to Platform Settings.

Custom Costs and Platforms

The table above lists the predefined Expense Costs. You can also create your own Expense Costs - and when you do, you choose which platforms each one applies to using Assign to Platforms. Custom costs can be moved between Expense Groups at any time with Reassign Expense Cost. For the full walkthrough on creating and managing your own costs and groups, see "Creating and Managing Custom Expense Groups & Costs."

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