Product Profit Calculator (Shopify, AU)
Work out your per‑order profit on Shopify. Enter price, COGS, shipping and fees to see gross profit (GP), GP%, break‑even price and simple projections. AU defaults are pre‑filled; toggle tax for GST‑inclusive pricing.
What to include in GP on Shopify
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Selling price minus discounts
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Cost of goods sold (COGS): product, packaging
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Payment fees: Shopify Payments % + per‑order fee; any third‑party gateway add‑on %
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Fulfilment costs: pick/pack, label, postage (minus any shipping the customer pays)
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Refunds/returns impact: lost fees, return shipping, restock where relevant
Simple GP formula (per order)
GP = (Price − Discounts + Shipping paid by customer) − (COGS + Payment fees + Fulfilment costs)
Important:
Fees vary by market and payment method. Use the calculator to model your own rates, then verify in Admin → Settings → Payments.
What affects your GP the most
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Discount depth: deeper discounts reduce net price and grow fees proportionally
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COGS and postage: small changes compound over volume
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Refund rate: even a few % can erase margin on thin‑margin items
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Payment method mix: third‑party gateways add extra % on each order
From GP to a simple NP estimate
Net profit (NP) subtracts overheads (apps, salaries, rent, utilities, fixed ops) from GP. In the calculator you can include a rough per‑order overhead to see how close you are to true profitability.
Common actions to improve GP
- Set free‑shipping thresholds to lift AOV above postage break‑even
- Promote high‑margin bundles; avoid discounting low‑margin heroes
- Switch to cheaper packaging that still protects the product
- Negotiate carrier and supplier rates; test fulfilment options
- Reduce refund drivers with accurate sizing, media and product education
Market specifics — Australia
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Currency: AUD ($). Per‑order fee typically $0.30; percentage ~1.75% via Shopify Payments.
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GST: 10% on most goods/services. Treat GST as pass‑through; don’t include in GP.
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Payment fees: Snapshot 1.75% + $0.30. Verify latest at Shopify AU pricing.
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Gateways: Enter any extra % for external gateways in the add‑on field.
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Fulfilment: AusPost and couriers can vary widely by state/zone and regional vs metro. Model your common parcel path.
Example — AU numbers
Price $45, 10% discount, COGS $18, customer pays $7 shipping, your fulfilment costs $8. With 1.75% + $0.30 fees and 3% refunds, the calculator estimates GP and NP.
FAQs
Does Shopify refund payment fees on returns?
Card fees are typically not refunded. Model a small refund rate to see its impact on realised gross profit.
Should I include marketing costs in GP?
No. Keep GP for product and fulfilment costs. Marketing spend belongs in your CAC/ROAS analysis and affects net profit.
What’s a healthy GP%?
It varies by category. Many DTC stores aim for 50–70% GP before overheads. Focus on improving your own baseline while staying competitive.