You Pay Ad Fees on Buyer Sales Tax
eBay calculates both your 13.25% Final Value Fee AND your Promoted Listings Standard ad rate on the buyer's total checkout amount—including state sales tax and shipping.
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=(B2+C2)*1.08*(0.1325+F2)+0.40 vs =G2/H2⚠️ Why Manual Formulas Fail at Scale: Manual spreadsheets calculate ad fees on item price alone, missing the 15%–22% fee inflation caused by buyer shipping and state sales tax gross-up.
🛡️ Zero-Upload Local Studio Advantage: Run eBay Promoted Listings Standard vs. Advanced CPC and Final Value Fee calculations 100% locally in your browser.
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eBay calculates both your 13.25% Final Value Fee AND your Promoted Listings Standard ad rate on the buyer's total checkout amount—including state sales tax and shipping.
Under Promoted Listings Standard, if a shopper clicks any promoted item in your store and buys a completely different SKU within 30 days, eBay still charges the full ad fee.
On a $150 item, an 8.5% Standard ad rate costs $13.77 per sale. Switching high-converting SKUs ($0.40 CPC at 5.5% CVR) cuts ad cost to $7.27—saving $6.50 per order.
Audit your Seller Hub Transaction CSVs and Promoted Listings campaigns 100% locally in your browser for a $19 one-time buyout with zero OAuth store tokens.
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Paste your item prices, buyer shipping charges, actual label costs, COGS, and current Promoted Standard % vs. Advanced CPC bids.
Slide the Target Ad Rate Cap bar to inspect how sales-tax gross-up inflates your true eBay take rate from 20% to 25%+.
Download a clean SKU action matrix separating low-ASP items (keep on capped CPA) from high-ASP winners (move to exact-match CPC).
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| Feature / Metric | 🛡️ eBayAdMargin Studio | ☁️ Cloud SaaS (Vendoo) |
|---|---|---|
| Pricing Model | 🛡️ $19 One-Time Buyout (0% Monthly Tax) | ☁️ $149/mo Recurring Seller SaaS |
| Tax + Shipping Gross-Up Fee Math | 🛡️ Applies 13.25% FVF & Ad % to Full Taxed Total | ☁️ Estimates on Item Subtotal Only |
| Standard CPA vs. Advanced CPC Solver | 🛡️ Exact SKU-Level ASP & CVR Crossover Matrix | ☁️ Shows Aggregate Ad Spend Only |
| 30-Day Halo Attribution Leakage Audit | 🛡️ Flags Repeat-Buyer SKUs Triggering Halo Fees | ☁️ No Halo Attribution Separation |
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Because eBay multiplies both your 13.25% Final Value Fee and your Promoted Listings Standard ad percentage against the buyer's total checkout amount—which includes item price, buyer-paid shipping, and state sales tax. On an $85 item with $8 shipping and 8% sales tax ($100.44 total), a 10% ad rate costs $10.04, which is 11.8% of your $85 item price.
If a buyer clicks on any of your Promoted Listings Standard items and purchases a different promoted item from your store within 30 days, eBay attributes a 'Halo sale' and charges the promoted ad rate in effect on the purchased item—even if the buyer found the second item organically.
Standard CPA charges a percentage of the total sale, so ad costs balloon on high-ticket items ($100+). If a $160 SKU converts at 5.5% with a $0.40 exact-match CPC bid, your ad cost per order is ~$7.27 (4.5%), whereas eBay's 'Suggested 9.5% Standard Ad Rate' would cost $16.41 per order.
eBay's dynamic suggested ad rate routinely climbs to 10%–14% in competitive categories like apparel, auto parts, and electronics. Stacked with the 13.25% Final Value Fee + $0.40 per-order fee on tax-grossed totals, your total platform fee exceeds 27% of gross revenue.
Since eBay charges both Final Value Fees and Promoted Listings Standard percentages on the combined Item + Shipping + Tax total, splitting shipping out no longer shields it from fees. However, factoring your actual PirateShip/USPS Commercial label discount against the fee base is critical to avoid negative shipping margin.
Never. All Final Value Fee, sales-tax gross-up, and CPA vs. CPC calculations run 100% locally in your browser RAM with zero cloud uploads.