Amazon FBA ROI Calculator
ROI (Return on Investment) measures how efficiently the money you put into a product turns into profit. Amazon sellers lean on ROI during product research because it lets you compare opportunities apples-to-apples — a $5 profit on a $10 investment (50% ROI) is usually a better buy than a $5 profit on a $25 investment (20% ROI), even though the dollar profit is the same. Tip: most experienced FBA sellers won't source a product below 50% ROI once Amazon's fees are factored in.
Last Updated: June 2026
Reviewed for current Amazon FBA referral and fulfillment fees.
- Free calculator
- Instant estimate
- No signup needed
- Beginner friendly
What it costs to get one unit to Amazon (inbound shipping).
Usually 15% of the selling price (varies by category).
Per-unit pick, pack, and ship fee based on size & weight.
Advanced (optional)
Returns reserve, software, advertising per unit, etc.
Net profit per sale
$11.01
ROI
115.89%
Excellent Opportunity
Profit margin
36.71%
High Profit PotentialTotal cost per unit
$18.98
Investment $9.50 + fees $9.48
Real Profit Snapshot
After platform fees
Estimated monthly profit
$550.50
Verdict: Healthy margin — this product has strong room to scale with ads or volume.
Recommendation
Excellent candidate — strong margin of safety for returns, ads, and fee changes.
Amazon FBA ROI benchmarks
How most Amazon sellers judge a product opportunity.
| ROI | Rating |
|---|---|
| Under 20% | Weak |
| 20–50% | Acceptable |
| 50–100% | Strong |
| 100%+ | Excellent |
All calculations are estimates based on average platform fees. Real profits may vary depending on category, ads, and shipping.
Free worksheet for your next step
Use this worksheet to plan FBA fees, ads, and product profitability.
- WorksheetAmazon FBA
Amazon FBA Profit Worksheet
A worksheet for estimating product profit after inventory and FBA costs.
- PlannerAmazon FBA
Amazon FBA Income Goal Planner
Turn your monthly Amazon income goal into a realistic plan using profit per unit, units per day, and product mix.
How to use this calculator
- Enter your numbers in each field above — the calculator updates instantly as you type, so there's nothing to submit.
- Use your real figures when you have them, or sensible estimates while you're planning. If a field doesn't apply, leave it at zero.
- Compare the results, then change one input at a time to see how each lever (price, cost, fees, volume) moves the outcome.
Formula
Total investment = Product cost + Shipping + Prep + Other costs · Total Amazon fees = Referral fee + FBA fee · Net profit = Selling price − Total investment − Total Amazon fees · ROI (%) = (Net profit ÷ Total investment) × 100 · Profit margin (%) = (Net profit ÷ Selling price) × 100
Worked example
You buy a unit for $8, pay $1 inbound shipping and $0.50 prep. Amazon's referral fee is $4.50 and the FBA fee is $4.98. You sell it for $29.99.
- Total investment = 8 + 1 + 0.50 = $9.50
- Total Amazon fees = 4.50 + 4.98 = $9.48
- Net profit = 29.99 − 9.50 − 9.48 = $11.01
- ROI = (11.01 ÷ 9.50) × 100 ≈ 115.9%
- Profit margin = (11.01 ÷ 29.99) × 100 ≈ 36.7%
Answer: $11.01 profit · 115.9% ROI · 36.7% margin
How it works
ROI and profit margin answer different questions. Margin tells you how much of each sale you keep — useful for understanding pricing strength. ROI tells you how hard the cash you tied up in inventory is working — useful for sourcing decisions, because the same dollars can be spent on different products.
A quick rule of thumb many FBA sellers use: below 20% ROI is risky once you account for returns, ads, and storage; 20–50% is workable; above 50% is a strong sourcing opportunity.
How to interpret your results
- Dollar values are shown per sale, per order, or per item unless a result is explicitly labelled monthly, weekly, or daily.
- Percentages (margin, ROI, conversion rate) are easier to compare across products and price points than raw dollars — use them when you benchmark.
- A positive result means you're ahead after the costs and fees you entered. A negative result means the current numbers don't work — change a lever (raise price, cut a cost, lower ad spend) and recalculate.
- Treat the output as a planning estimate, not a guarantee. Fees, taxes, and conversion rates shift over time — re-run the numbers whenever a key input changes.
Common mistakes
- Forgetting prep and inbound shipping in the investment number, which inflates ROI.
- Treating ROI and margin as the same metric — they answer different questions.
- Ignoring PPC advertising spend, which most new products need to start ranking.
- Skipping a returns reserve — even healthy products see a few percent come back.
Related Guides
Go deeper with plain-English guides on the same topic.
How To Calculate Amazon FBA Profit
How to calculate true Amazon FBA profit in 2026 — every cost line, the core formulas, and worked examples for private label, wholesale, and arbitrage.
Read guide →How To Price Amazon FBA Products
How to price Amazon FBA products in 2026 — costs, fees, PPC, and margin strategy, with worked examples at $15, $25, $50, and $100.
Read guide →How To Find Profitable Amazon FBA Products
A complete Amazon FBA product research system — demand, competition, pricing, margins, scoring, and validation before you buy inventory.
Read guide →How To Start Selling On Amazon FBA: Complete Beginner Guide
A complete 2026 beginner roadmap for Amazon FBA — what it is, fees, account setup, product research, sourcing, inbound, listings, and your first 90 days.
Read guide →
FAQ
- What is a good ROI for Amazon FBA?
- Many experienced FBA sellers target 50% ROI or higher on new sourcing, with 100%+ ROI considered strong. Anything below 20% is usually too thin once you factor in returns, ads, and long-term storage fees.
- What is the difference between ROI and profit margin?
- Margin is profit as a percentage of the selling price — it measures pricing efficiency. ROI is profit as a percentage of what you invested to acquire and prep the unit — it measures how hard your money is working. ROI is usually the key metric for product research; margin is more useful for pricing decisions.
- How do Amazon sellers evaluate products?
- Most sellers look at ROI, profit margin, monthly sales velocity, and competition before sourcing. They also check Amazon's referral category, FBA size tier, and any seasonal storage fees. The goal is a product with healthy ROI that can sustain ads, returns, and price competition.
- Does this calculator include PPC or advertising?
- Not by default. Add your estimated per-unit ad spend in the Other Costs field to see your post-ads ROI — many sellers spend $1–$3 per unit on PPC, especially during a launch.
- Why is my ROI so different from my margin?
- Because they have different denominators. A $10 profit on a $50 sale is 20% margin, but if it only cost you $15 to acquire and prep that unit, it's 67% ROI. Low-cost, mid-priced products often look modest on margin but excellent on ROI.
Why trust this calculator?
This tool uses standard mathematical formulas and commonly accepted calculation methods, shown openly in the Formula section above so you can verify the math yourself. Results are estimates based on the information you enter and do not account for every individual circumstance. For important financial, tax, legal, medical, or business decisions, please double-check with a qualified professional before acting on the numbers.
Keep going
One calculator rarely tells the full story. Pair this one with a related tool below to pressure-test your numbers from a different angle, or browse Work & Money Calculators for more in the same category.
What to calculate next
You may also find these tools helpful.
Amazon FBA Profit Calculator
True profit per unit after Amazon referral, FBA, and storage fees.
Amazon FBA Product Sourcing Calculator
Estimate landed cost, Amazon fees, profit, and ROI before placing an inventory order.
Break-Even Calculator
Sales needed to cover your startup costs.
Profit Margin Calculator
Universal profit, margin, and markup for any product or channel.
Related Guides
Amazon FBA Cost Guide
Every Amazon FBA fee in 2026 — referral, fulfillment, storage, fuel surcharge — with worked profit examples at $10, $25, $50, and $100 price points.
Read guide →Amazon FBA Inventory Management Guide
How to avoid stockouts and overstock on Amazon FBA — forecasting, lead times, reorder points, safety stock, and storage-fee strategy.
Read guide →How Much Does Amazon FBA Cost?
Every Amazon FBA fee explained — referral, fulfillment, storage, and the easy-to-miss extras — with 2026 rates.
Read guide →
Related Calculators
Amazon FBA Break-Even Calculator
Minimum Amazon selling price needed to cover product cost and FBA fees.
Try calculator →Amazon FBA Product Sourcing Calculator
Estimate landed cost, Amazon fees, profit, and ROI before placing an inventory order.
Try calculator →Amazon FBA Profit Calculator
True profit per unit after Amazon referral, FBA, and storage fees.
Try calculator →
Compare Alternatives
Etsy vs Amazon Handmade
Marketplace fees and reach compared — which keeps more of your profit?
Compare →
Case Studies
KDP Book Launch: Spend More on Ads or Improve the Cover?
A self-published romance author has $600 left in launch budget. The book is ranking but not converting — should that money go to more Amazon Ads or to a professional cover redesign?
Read case study →
Recommended Downloads
Amazon FBA Fee Cheat Sheet
A quick-reference guide to understanding common Amazon FBA fees and profit calculations.
Open resource →Amazon FBA Fee Guide
A plain-English overview of the common costs Amazon FBA sellers pay.
Open resource →Amazon FBA Income Goal Planner
Turn your monthly Amazon income goal into a realistic plan using profit per unit, units per day, and product mix.
Open resource →
Continue Learning
Business Math Basics for Online Sellers
A five-lesson starter course covering the only five numbers every online seller actually needs to track — revenue, margin, break-even, ROI, and cash flow.
Open course →