True profit calculator for Shopify stores.

How this calculator works (same formula nouz uses)

Shopify's "Total Sales" is a revenue headline, not a profit number. Your true profit per order is what is left after every real cost the dashboard leaves off the home screen: payment processing fees, the cost of the goods sold (COGS), the shipping you actually paid the carrier, the slice of ad spend that drove the order, and the fee you lose on every order that gets refunded. This calculator strips all five out, exactly the way nouz does when it shows your daily profit.

In plain English: True profit = order total − processing fees − COGS − shipping − ad spend per order − refund-fee loss. The refund-fee loss is the sneaky one: when you refund a customer you hand back the full order value, but the processor keeps the fee it charged on the original sale, so that fee is gone forever. We weight it by your refund rate so it shows up as a real, averaged cost per order.

A worked example

Using the defaults — a €60 order, €18 COGS, €6 shipping, €12 of ad spend per order, a 4% refund rate, and Stripe at 1.5% + €0.25:

• Processing fees: €60 × 1.5% + €0.25 = €1.15
• Refund-fee loss (averaged over orders): about €0.05 per order
• Subtract fees, COGS, shipping and ad spend: €60 − €1.15 − €18 − €6 − €12 − €0.05 = €22.80 true profit
• Net margin: €22.80 ÷ €60 = 38%

So the order that "Total Sales" logs as €60 actually leaves you €22.80. Hide the ad-spend line and it looks like €34.80 — which is why owners who ignore ad cost feel richer than their bank balance says they are.

What a healthy number looks like

There is no universal target, but a few rules of thumb hold for small stores. A net margin (true profit ÷ order value) in the 15–30% range is workable; above 30% is comfortable and gives you room to bid harder on ads. Under 10% is fragile — one bad ad week or a supplier price rise wipes it out. If true profit per order is negative, every sale makes you poorer, and scaling ad spend just scales the loss faster. The single biggest swing factor is usually ad spend per order, not COGS.

Common mistakes

• Counting Total Sales as profit. It is revenue before every cost below — treat it as the top line, never the bottom line.
• Forgetting the refund-fee loss. A refunded order still costs you the processing fee: you never get it back, even though the revenue reverses.
• Leaving ad spend out of the per-order math. Divide monthly ad spend by orders to get a real per-order figure; "it's just a fixed marketing budget" hides the true cost of each sale.
• Using list shipping instead of what you actually paid. Free-shipping offers and carrier surcharges mean the real number is often higher than the label price.

When to use it — and what's next

Use this whenever you set a price, launch a promo, or judge whether a product line is worth keeping. It is a per-order snapshot; to see the same math roll up across a whole trading day, nouz tracks it automatically. Note that nouz does not connect to Meta or Google Ads — it is a simple daily profit tool, not an attribution suite, so you enter ad spend per order yourself. See how it fits a store on our ecommerce solutions page, or check the sibling break-even ROAS calculator to find the ad return your margin can support.