This free Amazon profit margin calculator shows your true net profit per unit after product cost, Amazon fees, shipping, PPC, storage, and returns.
Add your selling price, product cost, and combined Amazon fees, then fill in inbound shipping, PPC, and storage per unit. Every field takes a simple dollar amount.
See net profit per unit, net margin, ROI, and the price you cannot sell below. The cost-per-dollar bar breaks down where every dollar of your price actually goes.
Set your return rate and how many units you sell per month. These turn a single-unit margin into a realistic monthly and annual profit picture.
Profit after every real cost
Most quick calculators stop at fees. This one folds in shipping, PPC, storage, and returns so the margin you see is the margin you keep.
Know your break-even price
See the exact selling price where profit hits zero, so you can discount, run deals, or set coupons without quietly losing money on every order.
See where each dollar goes
A single breakdown bar shows the share of your price taken by product cost, Amazon fees, ads, and returns, making it obvious which cost to attack first.
A margin only helps if it counts every cost between the sale and your bank account. On Amazon that is more than referral and FBA fees: inbound shipping, PPC, storage, and refunds on returns. This calculator folds them into one net number per unit, then scales it to your monthly volume, so you can spot products that look fine on revenue but barely profit once every cost is counted.
Once you know your true margin, the goal is growing without spending it back on ads, since a lower ad cost per unit flows straight to profit. Stack Influence helps Amazon brands run product-seeding campaigns with vetted micro-influencers paid in product, not cash, generating content and reviews that can lift organic rank so PPC does less of the work. Model a lower ad cost above to see the impact.
