Amazon Revenue & Profit Calculator
Estimate your monthly and yearly Amazon sales, fees, and net profit. Adjust assumptions to model FBA or FBM scenarios.
Why an Amazon revenue calculator matters
Most sellers focus on top-line sales first and profit second. That can be dangerous. On Amazon, fees, returns, advertising, and logistics can eat into your margin quickly. A simple revenue calculator helps you make better decisions before launching a product or scaling ad spend.
Use this tool to answer practical questions like:
- How much monthly revenue can I generate at my current unit sales?
- How much of that revenue is lost to Amazon fees and ad spend?
- What is my projected monthly and annual net profit?
- How many units do I need to sell to break even after fixed expenses?
What this calculator includes
This Amazon revenue calculator is designed to be realistic enough for planning while still easy to use. It includes core inputs that drive performance in both private label and wholesale models.
Revenue inputs
- Selling price per unit: Your average sale price after discounts.
- Units sold per day: Your average daily order volume.
- Selling days per month: Usually 30, but you can change this.
- Return rate: Percentage of units that are refunded or returned.
Cost inputs
- Amazon referral fee: Category-dependent percentage charged by Amazon.
- FBA/fulfillment fee: Per-unit fee for pick, pack, and shipping (or comparable FBM handling).
- Product cost per unit: Manufacturing or sourcing cost (COGS).
- Shipping per unit: Inbound freight, prep, or other unit-level logistics.
- Ad cost percentage: Advertising spend as a percentage of net sales (ACoS-style estimate).
- Fixed monthly costs: Software, prep center, storage, admin, and other overhead.
How the calculation works
The calculator first estimates total units sold each month, then adjusts for returns to get net sellable units. From there it calculates net sales revenue and subtracts all variable and fixed costs.
In plain language, the process is:
- Monthly units = units/day × selling days/month
- Net units after returns = monthly units × (1 − return rate)
- Net revenue = net units × selling price
- Total costs = referral fees + fulfillment fees + product cost + shipping + ad cost + fixed monthly costs
- Net profit = net revenue − total costs
Annual projections are then estimated by multiplying monthly figures by 12.
How to use this for better decision-making
1) Validate a new product idea
Before placing inventory, test best-case, expected-case, and worst-case assumptions. Increase return rate and ad cost in the worst-case scenario. If your margin stays healthy across all three, your product is likely more durable.
2) Set realistic PPC budgets
Many sellers scale ads without checking profitability. Use the ad cost field to test how changing ACoS impacts net margin. A product that looks strong at 10% ad cost may be weak at 22%.
3) Improve pricing strategy
Try increasing or decreasing price by small increments. You’ll quickly see whether a higher price improves profit enough to offset potential conversion drops.
4) Plan inventory and cash flow
Projected monthly net profit helps estimate reorder timelines, inventory depth, and available cash for product expansion.
Common mistakes Amazon sellers make
- Ignoring returns: High return categories can dramatically reduce realized revenue.
- Using only gross sales: Gross revenue is not take-home profit.
- Underestimating fees: Referral, FBA, and storage charges add up fast.
- Forgetting fixed costs: Subscriptions, tools, and labor affect true profitability.
- Not updating assumptions: Costs and conversion rates shift over time; revisit your model monthly.
Example scenario
Suppose you sell a product at $29.99 and move 20 units per day for 30 days. With a 15% referral fee, $5.20 fulfillment fee, $7.50 COGS, $0.80 shipping, 12% ad cost, 3% returns, and $500 fixed overhead, your projected numbers can look very different from simple “sales × price” math.
The calculator helps you see your true business reality: what portion goes to Amazon, what portion goes to operating costs, and what remains as net profit.
Final thoughts
If you treat Amazon like a real business, modeling numbers is non-negotiable. Use this calculator weekly to compare assumptions against actual performance, tighten weak margins, and make sharper growth decisions.
A good rule: optimize for profitable revenue, not just higher revenue. High sales with low margin can create more stress than wealth.