Shipping margin is the difference between what you charge customers for shipping and what it actually costs you to ship their order. A positive shipping margin means shipping generates profit; a negative one means it costs you money.
Shipping margin is the difference between what you charge customers for shipping and what it actually costs you to ship their order. A positive shipping margin means shipping generates profit; a negative one means it costs you money.
Shipping Margin = Shipping Revenue − Shipping Cost Many ecommerce sellers overlook shipping as a profit lever. If you charge £5 for shipping but it costs £3.50, you earn £1.50 per order in shipping margin. Conversely, offering free shipping when it costs you £5 per order creates a hidden £5 cost that eats into product margins. Shipping margin should be tracked separately because it significantly affects per-order profitability, especially for stores with low average order values.
Shipping Margin = Shipping Revenue − Shipping Cost You charge £4.99 flat-rate shipping. Your actual shipping cost averages £3.20 per order. Your shipping margin is £4.99 − £3.20 = £1.79 per order. Over 500 orders per month, that is £895 in additional margin from shipping alone.
Shipping is often the largest overlooked variable cost in ecommerce. Stores offering free shipping without accounting for it in product pricing can silently lose thousands per month. Tracking shipping margin ensures your delivery strategy supports profitability.
Offering free shipping without building the cost into product prices
Using a flat shipping rate that loses money on heavy or distant orders
Not renegotiating carrier rates as order volume increases
StoreLyst tracks shipping revenue and actual shipping costs per order, showing your true shipping margin. You can quickly identify whether your shipping strategy is making or losing money.
Learn more about COGS Management →Free shipping can increase conversion rates, but only if you account for the cost. Build shipping costs into your product prices or set a free shipping threshold that increases AOV enough to absorb the cost. Never offer free shipping without doing the maths.
With free shipping, your shipping revenue is zero, so your shipping margin equals the negative of your shipping cost. If shipping costs you £4 per order, your shipping margin is -£4. This cost must be absorbed by your product margins.
Breaking even on shipping (zero margin) is the minimum target. Many stores aim for a small positive margin of £1–2 per order. If you offer free shipping, ensure your product margins are high enough to absorb the full shipping cost.
Negotiate volume discounts with carriers, use lighter packaging, compare rates across multiple carriers, and consider regional shipping zones. Setting minimum order thresholds for free shipping also helps by spreading the cost across larger orders.
Stop calculating in spreadsheets. Get real-time shipping margin tracking for your Shopify store.