To calculate fulfillment cost per order, add up every fulfillment cost for a month (storage, receiving, pick and pack, packaging, shipping, returns and any fixed fees or minimums), then divide by the number of orders shipped that month. Count shipping in the total: it is usually the largest single cost.
Most brands know their pick and pack rate but not their true cost per order. Once storage, minimum fees, packaging, shipping and returns are added, the real number is often much higher than the headline rate. This guide gives you the fulfillment cost per order formula, a worked example and the levers that bring the number down.
What is fulfillment cost per order?
Fulfillment cost per order is the total cost of getting one order from your warehouse shelf to your customer’s door. It is the number that tells you whether each sale actually makes money, and it is the fairest way to compare an in-house warehouse with a third-party logistics (3PL) provider, or one 3PL with another.
It should include every cost that exists because you hold and ship stock:
- Storage: pallet, shelf or bin fees, spread across the orders shipped that month.
- Receiving: unloading, counting and putting away incoming stock.
- Pick and pack: the per-order fee plus any per-item fee for extra units.
- Packaging: boxes, satchels, void fill and inserts.
- Shipping: the carrier cost, including fuel and other surcharges.
- Returns: processing, inspection and restocking.
- Fixed fees: account management, software, monthly minimums, or for an in-house warehouse: rent, wages, equipment and insurance.
Keep marketing and customer acquisition costs out of it. Mixing them in hides operational problems.
How do I calculate fulfillment cost per order?
Use a full month of data so storage, minimums and wages are captured properly, then follow these steps:
- Pick the period. One calendar month is easiest, matched to your 3PL invoice.
- Add the variable costs. Pick and pack, packaging, shipping, receiving and returns for that month.
- Add the fixed costs. Storage, account or software fees and any top-up to a monthly minimum. In-house, include rent, salaries, equipment leases, utilities and insurance.
- Count the orders. Use customer orders shipped, not parcels. If one order ships in two parcels, it still counts as one order, with both parcels’ costs included.
- Divide. Total cost ÷ orders shipped = fulfillment cost per order.
| Cost line (one month) | Example amount |
|---|---|
| Storage (40 pallets) | A$1,400 |
| Receiving | A$300 |
| Pick and pack (2,000 orders) | A$5,000 |
| Packaging | A$1,100 |
| Shipping | A$18,000 |
| Returns and other fees | A$700 |
| Total | A$26,500 |
| Cost per order (÷ 2,000) | A$13.25 |
These figures are illustrative. Your own numbers will depend on product size, order profile and where your customers are. To model your own, try our 3PL cost calculator.
Calculate it separately without shipping as well. Cost per order before shipping shows how efficient the warehouse is; cost per order including shipping shows what each sale really costs you.
When we priced five 3PLs against the same six months of real orders for an apparel brand, total annual cost ranged from about A$260,000 to A$334,000: a 28% gap on identical orders. Shipping was 60–67% of each 3PL’s total, so carrier rates moved cost per order far more than storage or pick and pack rates did.
What pushes cost per order up?
- Oversized packaging. Carriers charge on actual or volumetric weight, whichever is higher. A box that is too big can push a parcel into a higher price band. See how volumetric weight works.
- Picking errors. Every wrong order costs a second pick, a second parcel and often a return.
- Slow-moving stock. Storage keeps charging for products that rarely sell, and some 3PLs add long-term storage fees.
- Monthly minimums. In a quiet month you pay the minimum regardless of volume, so cost per order spikes.
- Returns. Each return adds handling and often a second shipping cost.
- Surcharges and extras. Fuel levies, peak surcharges, kitting and special labelling. Our guide to hidden 3PL costs covers the common ones.
How can I reduce my cost per order?
- Get shipping right first. Because it is usually the biggest cost, compare carrier rates by zone and weight band, not just the warehouse rate card.
- Right-size packaging. Use the smallest box or satchel that protects the product.
- Clear slow stock. Discount, bundle or return slow-moving products to cut storage.
- Raise units per order. Bundles and free-shipping thresholds spread the fixed per-order cost across more items.
- Check the pricing model. If minimums or fixed fees dominate, a different 3PL pricing model may suit your volume better.
- Re-quote regularly. Compare 3PLs on your real order data at least every two years, or when volume changes sharply.
Frequently asked questions
What is a good fulfillment cost per order?
There is no single benchmark. It depends on product size, weight, units per order and where your customers are. A better test is to compare your cost per order against quotes from several 3PLs priced on your own order data, and to track it month by month.
Should shipping be included in fulfillment cost per order?
Yes, track both. Cost per order before shipping measures warehouse efficiency; including shipping shows the true cost of each sale, which is what matters for pricing and margins.
How do I calculate cost per order for an in-house warehouse?
Use the same formula, but include rent, wages, equipment, software, utilities and insurance as fixed costs. Many in-house operations underestimate their cost because these overheads sit in different budgets.
How often should I recalculate fulfillment cost per order?
Monthly. Seasonal peaks, quiet months below a minimum and carrier price rises all change the number, so a single annual figure can hide problems.
Is a lower pick and pack rate always cheaper?
No. A low pick and pack rate can sit alongside higher shipping rates, minimums or surcharges. Compare total cost per order, not individual rates.
Want to know your real cost per order with a 3PL?
Warenous prices pre-screened 3PLs against your actual orders and shows you the total cost of each option, for free.
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