A creator discount reduces an order's contribution by lowering the revenue available to cover product, fulfillment, shipping, returns and creator costs. Calculate both a kept-order outcome and a returned-order outcome, weight them by the expected return rate, then subtract the creator's fixed fee per order. A discount can leave positive contribution while still failing your target.
The worksheet below compares three hypothetical offers for the same $80 item. It separates what the customer saves from what the merchant spends. All dollar amounts are illustrative USD, not merchant results or platform prices.
Set the contribution boundary
For this decision, contribution means revenue left after the order-related costs listed here, plus an allocation of the fixed creator fee. It still has to cover overhead and profit. It is not a cash-flow forecast: recovered inventory has value, but does not put refunded money back in the bank.
Start with one product, one shipping destination and one payment method. Exclude sales tax collected for remittance from revenue. Add any taxes or duties your business bears as costs. Repeat the calculation for materially different baskets or destinations rather than using one average that conceals expensive orders.
Modash's ecommerce affiliate guide identifies product price and margin as inputs to commission design. Here, hold the commission rate constant so you can see how changing the customer offer changes contribution. For choosing that rate, use the separate guide to setting commission terms around your business.
Define the assumptions before comparing offers
These assumptions apply to all three hypothetical offers:
| Input | Assumption |
|---|---|
| Item price before discounts | $80 |
| Landed product cost | $32 |
| Pick, pack and packaging | $3 per shipped order |
| Outbound carrier cost | $7 per shipped order |
| Payment processing | 3% of item payment plus customer shipping, plus $0.30 |
| Creator commission | 10% of discounted item revenue, excluding shipping and tax |
| Fully returned orders | 10% of shipped orders |
| Return label and handling | $8 per returned order |
| Inventory value recovered | $24 per returned order |
| Fixed creator fee | $600 across 100 shipped orders |
Assume every return receives a full refund of the item payment and any customer-paid shipping. The commission reverses in full under the hypothetical creator agreement. Processing fees, outbound postage and fulfillment costs remain spent. There are no exchanges, partial returns, cancellations, chargebacks or other campaign costs in this example.
The $24 recovery is the assumed value returned to usable inventory from a $32 product cost. It leaves an $8 product loss. Do not count the item's $80 retail price as recovered inventory value, or count both the recovery and a future sale's revenue in this order.
Your inputs may differ. Shopify's refund guidance separates refunds, shipping refunds and restocking. It also says Shopify Payments credit card fees are not returned when an order is refunded. The worksheet's processing rate is invented for the example; replace it with your actual charges.
Commission reversal is an agreement assumption, not a universal platform rule. If you cannot recover commission on returns, leave that cost in the returned-order calculation. Use the returns reconciliation guide to align the payout record with the agreed terms.
Compare the three customer offers
Offer A gives 10% off and charges the customer $5 for shipping. Offer B keeps the full item price and includes shipping. Offer C gives 20% off and includes shipping. Each pays the same 10% creator commission.
| Per-order amount | A: 10% off | B: shipping included | C: 20% off + shipping |
|---|---|---|---|
| Item payment | $72.00 | $80.00 | $64.00 |
| Customer shipping payment | $5.00 | $0.00 | $0.00 |
| Shipping subsidy on a kept order | $2.00 | $7.00 | $7.00 |
| Processing fee | $2.61 | $2.70 | $2.22 |
| Commission on a kept order | $7.20 | $8.00 | $6.40 |
| Kept-order contribution | $25.19 | $27.30 | $13.38 |
| Returned-order contribution | -$28.61 | -$28.70 | -$28.22 |
| Expected contribution before fixed fee | $19.81 | $21.70 | $9.22 |
| Fixed creator fee allocation | $6.00 | $6.00 | $6.00 |
| Expected contribution after fixed fee | $13.81 | $15.70 | $3.22 |
The shipping subsidy row explains the offer; it is not another cost to subtract. The calculations already include customer shipping revenue and the full $7 carrier cost.
For Offer A, a kept order contributes:
$72 item payment + $5 shipping payment
- $32 product - $3 fulfillment - $7 carrier
- $2.61 processing - $7.20 commission
= $25.19A fully returned order contributes:
$0 retained customer revenue
- ($32 product cost - $24 inventory recovered)
- $3 fulfillment - $7 outbound carrier
- $2.61 processing - $8 return costs
= -$28.61Weight those outcomes before allocating the fixed fee:
90% × $25.19 + 10% × (-$28.61) = $19.81
$600 fixed creator fee / 100 shipped orders = $6.00
$19.81 - $6.00 = $13.81 expected contribution per shipped orderOffer B leaves the most contribution under these assumptions. That does not tell you which offer customers will choose more often. Offer C needs enough additional orders to offset its lower contribution per order.
Make the volume comparison without moving the fee twice
At 100 shipped orders, Offer B produces $2,170 before the $600 fixed fee, leaving $1,570. To match that result, Offer C needs about 236 shipped orders:
Required orders = ($1,570 target contribution + $600 fixed fee) / $9.22
= 235.36, rounded up to 236This assumes the same return rate, basket, costs and fixed fee at the higher volume. Extra creator deliverables or fulfillment surcharges would change the answer. Do not divide $15.70 by $3.22 to estimate the required order ratio: those figures each allocate the fixed fee over only 100 orders.
Treat additional sales as a hypothesis to test. Code-attributed orders alone do not establish how many customers would have bought without the promotion. Keep uncertain repeat-purchase value outside the first-order calculation until you have evidence for it.
Stress-test the return rate and the checkout price
With a hypothetical 20% full-return rate instead of 10%, contribution after the same $6 fee allocation becomes $8.43 for A, $10.10 for B and negative $0.94 for C. That change makes Offer C lose money before overhead at 100 shipped orders.
Also test inventory recovery. If returned products have no usable value, replace $24 with zero. At a 10% return rate, that reduces expected contribution by another $2.40 per shipped order.
Finally, make sure the worksheet uses the price customers can receive. Shopify's discount-combination guidance allows eligible product or order discounts to combine with free shipping when configured. Product discounts apply before order discounts, and shipping discounts apply last. Eligibility and checkout restrictions still apply.
Include any permitted welcome or loyalty discount in a separate scenario. For the actual test journey, follow the mobile creator-offer checkout checklist.
Set an offer approval rule
Before sending the creator brief, record:
- The minimum contribution required per shipped order, after expected returns and the fixed fee allocation.
- The shipping destinations, products and discount combinations covered by that approval.
- The order-volume assumption and the lowest volume at which the campaign remains acceptable.
- Who will replace estimated returns, processing charges and commissions with settled figures.
Keep offer eligibility and the creator's paid relationship clear in the brief. For endorsements affecting U.S. consumers, FTC staff guidance calls for disclosure of financial relationships and other material connections, placed with the endorsement where people can notice it. Other jurisdictions may impose different requirements.
Choose one real basket now. Fill in its carrier quote, product cost, refund behavior and creator payment terms. Approve the offer only after its downside scenario meets your contribution floor, or record the specific loss budget you are prepared to fund.
