How do discounts affect my Shopify transaction fees?

How Discounts Affect Shopify Transaction Fees

Shopify's transaction and payment processing fees are calculated as a percentage of the sale amount plus a fixed per-transaction fee. Because discounts reduce the final sale amount, they also reduce the absolute transaction fee - but this fee reduction is much smaller than the discount cost itself, so it should not factor significantly into discount depth decisions.

Shopify Transaction Fee Structure (2026)

Fee Impact of a 20% Discount Example

• Full price order: $60 → fee (Basic): 2.9% × $60 + $0.30 = $2.04
• 20% discounted order: $48 → fee: 2.9% × $48 + $0.30 = $1.69
• Fee saving from discount: $0.35 saved in fees
• But discount cost: $12 in margin given away
• Conclusion: transaction fee reduction is negligible vs. discount margin cost

The Important Fee Consideration: Volume

While fee reduction per order is minimal, there's a volume consideration: if a discount campaign doubles your order volume, you'll double your total transaction fees. Plan your discount campaign budget to include this incremental processing cost, particularly for BFCM when volume spikes are significant.

Using Shopify Payments (vs. third-party processors) eliminates the additional transaction fee. If you're on Shopify and using PayPal or another third-party gateway, each discounted order also incurs the +1-2% third-party fee, which does affect your blended discount ROI calculation.