How do I calculate how much each order actually contributes?
Contribution per order is what is left of one sale after the costs that only exist because that order happened, and this worked example shows the exact steps.
Most small sellers know their selling price and their product cost. Fewer know what one order really leaves in their pocket. That number is called contribution, and it is the most useful figure you can have before you start thinking about rent, salaries or ads.
What contribution means
Contribution is the money one order brings in, minus every cost that was created by that specific order. If the order never happened, those costs would not exist. It is the amount each order contributes towards your fixed costs and, after those are covered, towards your profit.
Fixed costs are different. Your monthly tool subscription, your studio rent or a part-time helper's salary do not change when one more parcel goes out, so they stay out of this calculation.
A worked example
Say you sell a printed kurta set for Rs 800. Here is what that single order costs you (illustrative numbers, use your own).
- Product cost, meaning fabric, stitching and tags, Rs 450
- Shipping you pay to send it, Rs 70
- Packing, meaning the mailer bag, tissue and a thank-you card, Rs 30
- Payment fee, say 2 percent of Rs 800, Rs 16
Add the order-linked costs: 450 + 70 + 30 + 16 = Rs 566.
Now subtract from the price: 800 - 566 = Rs 234.
So every order of this kurta set contributes Rs 234. If you sell 100 of them in a month, that is Rs 23,400 available to pay your fixed costs. Whatever remains after those fixed costs is your real profit.
Why not just use the product cost?
If you only subtract the Rs 450 product cost, you see Rs 350 and feel comfortable. The trouble is that Rs 116 of the real cost has vanished from your thinking. Over 100 orders that is Rs 11,600 you believed you had but do not. Sellers who price only against product cost are the ones who say they are busy but never seem to have cash.
Things people forget to include
Go through your last five orders and check for these items.
- Free shipping you offered, which you absorbed
- Gateway charges on prepaid orders
- Cash handling charges on COD orders
- Small inserts, stickers and tape
- Any coupon applied to the order
If a coupon took Rs 80 off this order, the contribution is not Rs 234 but Rs 154. Discounts come straight off contribution because none of the costs shrink. To go deeper on how this happens, read coupons that actually move stock.
How to use the number
Once you know contribution per order, three decisions get easier.
- Pricing. If Rs 234 feels too thin, you can see precisely whether to raise the price, switch to a cheaper packing option or renegotiate shipping. The article on price from target margin formula helps you work backwards from the figure you want.
- Ad spend. You cannot pay more than Rs 234 to win a customer on a single order without losing money on that order.
- Volume targets. Divide your fixed costs by contribution and you know how many orders you need every month to break even.
A quick habit
Open a simple sheet with columns for price, product cost, shipping, packing, payment fee and contribution. Fill one row per product. Update it whenever your courier rate or supplier price changes. It takes ten minutes and tells you which products deserve your ad budget and which ones quietly eat your effort.
Contribution is not the final profit, and it is not meant to be. It is the honest per-order picture, and it is the base for every other calculation in this series. Know it first, then work outward to fixed costs, ads and discounts.
Confirm the exact fee rates on your own statements, since they depend on your payment mode and agreement. And if you also need to understand how your costs build up before the order even happens, see landed cost per unit explained.