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What's My Margin?

Profit calculators for UK sellers

Pick the one that matches where you sell. Each uses that platform's fee structure with editable example rates — none is connected to your account, and all run in your browser for free.

Shopify plan break-even

Basic vs Grow or Grow vs Advanced: the order volume where a lower card rate covers a higher subscription.

General profit calculator

Any channel. Target-margin pricing and saved, comparable scenarios.

Wholesale margin check

Sell-in to shelf price using margins, not markups.