Fee Calculator
Final value fee, per-order fee and promoted listings on any sale, then net profit and margin.
Open the calculatorFree seller tools
eCommerce seller tools: run the numbers before you decide
Calculators built on published, dated fee schedules. Change any figure and the result updates. No sign-up, nothing stored.
No sign-upDated fee schedulesNothing stored
eBay
eBay calculators
UK Fee Calculator
eBay.co.uk business and private seller fees by category: final value fee, per-order fee, 0.35% regulatory fee and VAT, then profit in pounds.
Open the calculatorProfit Calculator
Item cost, shipping, packaging and fees against your price, with margin and return on cost.
Open the calculatorROI Calculator
What your inventory cash returns per turn, so you can compare products rather than prices.
Open the calculatorSell-Through Rate Calculator
How fast a product actually sells, the number that decides what to restock and what to clear.
Open the calculatorBreak-Even Calculator
The price at which a listing stops losing money once fees, shipping and returns are counted.
Open the calculatorSeller Level Calculator
Defect rate, cases and late shipments against the Below Standard, Above Standard and Top Rated limits.
Open the calculatorPromoted Listings Calculator
The ad fee on a promoted sale, profit after ads and the break-even ad rate.
Open the calculatorTitle Checker
Counts your listing title against the 80-character limit and flags special characters, filler words and wasted characters.
Check a titleOther marketplaces
TikTok Shop, Amazon and Etsy
TikTok Shop Fee Calculator
Referral and transaction fees on an order, with net profit after your costs.
Open the calculatorAmazon Referral Fee Calculator
Referral fee by category plus the per-item minimum, against your price and cost.
Open the calculatorEtsy Fee Calculator
Listing, transaction and payment processing fees on a sale, with what is left.
Open the calculatorNot sure which service fits?
A free audit tells you what your account needs first. Or book a 30-minute call.
What the numbers usually reveal
The three findings that repeat
Shipping charged to the buyer is fee-bearing
On eBay the final value fee applies to the whole order, shipping included, so moving cost between price and postage changes nothing.
Check a saleA Below Standard rating adds 6% to every final value fee
Seven percent after four consecutive months. It is the most expensive metric on the account and it is fixable.
See the solutionMargin is usually lost on a minority of products
Break-even and sell-through together find the lines that tie up cash without earning it.
Open the calculatorGuides
Guides to read alongside our eCommerce seller tools
eBay Seller Fees 2026: The Complete Breakdown
Every fee eBay charges, including the ones the calculators do not model.
ReadHow to Track eBay Profit and Expenses
Turning per-sale arithmetic into a monthly close.
ReadTikTok Shop Fees Explained
What TikTok charges and how to calculate real profit on a creator-driven order.
ReadFAQ
Questions about working with Slayva
Are the tools really free?
Yes. No account, no email, no usage limit. They run in your browser and nothing you type is sent anywhere.
How current are the fee rates?
Every calculator states the fee schedule it uses, the source page it came from and the date we last verified it against that source. When a platform changes a rate we update the calculator and the date.
Why is my real payout different?
Category exceptions, international sales, store subscriptions, promoted listing charges, seller-standard penalties and payment disputes all move the number. Each tool lists what it does and does not model.
Can you run these numbers across my whole catalogue?
That is what the free account audit does: fees, pricing, shipping and the products that lose money once shipping and returns are counted.
Free audit
Want the numbers run across your catalogue?
Send your store link. We check fees, pricing and the products that lose money after shipping and returns, and reply within 24 hours.
Want the same maths across your whole catalogue?
A free account audit covers fees, pricing, shipping and the products that lose money after returns.
No sign-up for the toolsFree audit, no contract