Amazon FBA Profit Calculator
Estimate your monthly Amazon FBA profits by entering your selling price, fees, and costs below.
What is an FBA profit calculator?
An FBA profit calculator helps Amazon sellers estimate how much money they keep after Amazon fees and business costs. Revenue can look great on paper, but FBA sellers deal with referral fees, fulfillment fees, storage fees, advertising spend, landed product costs, and fixed overhead. A calculator makes those trade-offs visible before you place inventory orders.
Why it matters for your Amazon business
Many new sellers focus on top-line sales and forget margins. Profit—not revenue—pays for growth, inventory replenishment, and owner income. If your margin is thin, one fee increase or PPC spike can erase monthly earnings.
- Spot weak products before launching them
- Set safer pricing targets
- Forecast realistic monthly profit and cash flow
- Compare products quickly using standardized assumptions
Key inputs explained
1) Selling price and units sold
These define your monthly revenue. Be conservative with volume assumptions; overestimating unit sales can hide risk.
2) Product cost and inbound shipping
Your COGS plus shipping to Amazon create your landed cost per unit. If you import, include duties and prep costs in this section.
3) Amazon fees
Referral fee is usually a percentage of sale price. FBA fulfillment fee and storage fee are generally per unit. These can materially change by category, size tier, and season.
4) Advertising and other variable costs
PPC is often one of the largest controllable costs in FBA. Include promotions, coupons, and any repeatable per-unit expense in this line.
5) Fixed monthly costs
Software tools, prep center retainers, bookkeeping, and subscriptions should be captured as fixed overhead. Even small fixed costs can reduce net results at low sales volumes.
How to use this calculator effectively
- Run a baseline scenario with expected values.
- Run a conservative scenario with lower sales and higher ad cost.
- Run an optimistic scenario to estimate upside.
- Use break-even price to guide discounting decisions.
How to improve FBA profitability
Reduce landed cost
Negotiate manufacturing cost, optimize packaging dimensions, and lower inbound shipping expense.
Improve conversion rate
Better images, clearer copy, stronger A+ content, and social proof can increase conversion and reduce wasted ad spend.
Control ad spend
Segment campaigns by keyword intent, pause low-converting terms, and optimize bids weekly. Profit-focused ad management beats volume-focused ad management.
Price with margin protection
Short-term discounts can boost rank, but frequent underpricing may destroy contribution margin. Use break-even pricing as your guardrail.
Common mistakes sellers make
- Ignoring storage fees and long-term storage risk
- Treating refunds and returns as zero-impact events
- Using blended ad costs from old periods in new forecasts
- Forgetting fixed overhead when evaluating product viability
Final thought
A great FBA product is not just a top seller—it is a reliable profit generator under realistic assumptions. Use this calculator frequently, especially before reorders, price changes, and ad scaling.