Mortgage Recast Calculator

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.fba-calc-container { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif; max-width: 800px; margin: 20px auto; padding: 25px; border: 1px solid #e1e4e8; border-radius: 8px; background-color: #ffffff; box-shadow: 0 4px 6px rgba(0,0,0,0.05); } .fba-calc-header { text-align: center; margin-bottom: 25px; } .fba-calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; } @media (max-width: 600px) { .fba-calc-grid { grid-template-columns: 1fr; } } .fba-input-group { margin-bottom: 15px; } .fba-input-group label { display: block; font-weight: 600; margin-bottom: 5px; color: #333; } .fba-input-group input { width: 100%; padding: 10px; border: 1px solid #ddd; border-radius: 4px; box-sizing: border-box; } .fba-btn { grid-column: 1 / -1; background-color: #ff9900; color: #000; border: none; padding: 15px; font-size: 18px; font-weight: bold; border-radius: 4px; cursor: pointer; transition: background-color 0.2s; } .fba-btn:hover { background-color: #e68a00; } .fba-results { margin-top: 25px; padding: 20px; background-color: #f3f3f3; border-radius: 6px; display: none; } .result-row { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid #ddd; } .result-row:last-child { border-bottom: none; } .result-label { font-weight: 600; } .result-value { font-weight: 700; color: #111; } .profit-positive { color: #2e7d32 !important; } .profit-negative { color: #d32f2f !important; } .fba-content { margin-top: 40px; line-height: 1.6; color: #444; } .fba-content h2 { color: #232f3e; margin-top: 30px; } .fba-content h3 { color: #232f3e; }

Amazon FBA Profit Calculator

Estimate your net profit, margins, and ROI for FBA listings.

Amazon Referral Fee: $0.00
Total Expenses: $0.00
Net Profit: $0.00
Net Margin: 0%
Return on Investment (ROI): 0%

Understanding Amazon FBA Profitability

Selling on Amazon via Fulfillment by Amazon (FBA) is a powerful way to scale an e-commerce business, but the fee structure can be complex. To ensure your business remains sustainable, you must calculate your "Net Profit" after all Amazon-related expenses are deducted.

Key Metrics Explained

  • Sale Price: The final price the customer pays for your product on Amazon.
  • Product Cost (COGS): The total cost to manufacture or purchase one unit from your supplier.
  • Referral Fee: Amazon's "commission" for selling on their platform. For most categories, this is 15% of the total sales price.
  • Fulfillment Fee: The cost for Amazon to pick, pack, and ship your product to the customer. This depends on the size and weight of the item.
  • Storage Fee: Monthly fees charged for keeping your inventory in Amazon fulfillment centers.

A Practical Example

Imagine you sell a Yoga Mat for $40.00. Your manufacturing cost is $10.00, and shipping it to Amazon costs $1.00 per unit. Amazon charges a 15% referral fee ($6.00) and an FBA fulfillment fee of $7.50. After factoring in $0.50 for storage:

  • Total Expenses: $10 + $1 + $6 + $7.50 + $0.50 = $25.00
  • Net Profit: $40.00 – $25.00 = $15.00
  • Net Margin: 37.5%
  • ROI: 150% (Profit / Product Cost)

How to Improve Your FBA Margins

If your margins are slim (below 20%), consider these strategies:

  1. Optimize Packaging: Reducing the size or weight of your product packaging can drop you into a lower FBA fulfillment fee tier.
  2. Bulk Shipping: Negotiate better freight rates with your freight forwarder to lower the "Shipping to Amazon" cost per unit.
  3. Increase Price: Sometimes a small $1-2 price increase doesn't affect conversion rates but significantly boosts your net profit.
  4. Inventory Management: Avoid "Long Term Storage Fees" by only sending enough inventory to cover 60-90 days of sales.
function calculateFBA() { var salePrice = parseFloat(document.getElementById('salePrice').value) || 0; var productCost = parseFloat(document.getElementById('productCost').value) || 0; var shippingToAmazon = parseFloat(document.getElementById('shippingToAmazon').value) || 0; var referralFeePercent = parseFloat(document.getElementById('referralFeePercent').value) || 0; var fbaFee = parseFloat(document.getElementById('fbaFee').value) || 0; var storageFee = parseFloat(document.getElementById('storageFee').value) || 0; var otherCosts = parseFloat(document.getElementById('otherCosts').value) || 0; if (salePrice 0 ? (netProfit / productCost) * 100 : 0; // Display Results document.getElementById('resReferral').innerText = "$" + referralFeeAmount.toFixed(2); document.getElementById('resTotalExpenses').innerText = "$" + totalExpenses.toFixed(2); var profitEl = document.getElementById('resNetProfit'); profitEl.innerText = "$" + netProfit.toFixed(2); if (netProfit > 0) { profitEl.className = "result-value profit-positive"; } else { profitEl.className = "result-value profit-negative"; } document.getElementById('resMargin').innerText = netMargin.toFixed(2) + "%"; document.getElementById('resROI').innerText = roi.toFixed(2) + "%"; document.getElementById('fbaResults').style.display = 'block'; }

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