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Free calculators for online sellers
Know what you'll keep before you list.
Current marketplace fees, actual costs, profit, margin, ROI, and target pricing in one clean calculation. No signup. No spreadsheet archaeology.
- Current fee sources
- Calculates locally
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- 29
- fee guides
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SALE SNAPSHOTLIVE
ITEM SOLD$100.00
Platform fees− $13.60
Item + fulfillment− $46.50
ESTIMATED PROFIT$39.90
39.9%Calculator library
Run the numbers before the offer arrives.
Each tool uses the platform's real fee bases and adds the costs generic payout calculators leave out.
Most used
Listing and renewal cost math
Listing Fee Calculator
Calculate editable listing and renewal fees, net payout, profit, margin, ROI, and the sale price needed for a target profit.
02
Flexible selling commission math
Seller Commission Calculator
Calculate an editable seller commission, net payout, profit, margin, ROI, and the minimum sale price for a target profit.
03
eBay advertising math
eBay Promoted Listings Fee Calculator
Calculate an eBay Promoted Listings General ad fee from the total sale amount, plus proceeds, profit, margin, and break-even ad rate.
04
Card processing math
Credit Card Processing Fee Calculator
Calculate a credit card processing fee from your actual percentage, fixed charge, and allocated costs. See payout and effective rate.
05
Marketplace fee comparison
Marketplace Fee Comparison Calculator
Compare estimated U.S. seller fees and profit for eBay, Etsy, and Walmart Marketplace using current official standard rates.
06
Walmart Marketplace seller math
Walmart Seller Fee Calculator
Calculate current U.S. Walmart Marketplace referral fees by category, payout, profit, margin, ROI, and target sale price.
07
Reverb seller math
Reverb Fee Calculator
Calculate current Reverb selling, payment processing, Bump and cross-border fees. See payout, profit, margin, return on direct costs and target price.
08
StockX seller math
StockX Fee Calculator
Calculate current U.S. StockX Verified Marketplace seller fees by level, payout, profit, margin, ROI, and target sale price.
09
GOAT seller math
GOAT Fee Calculator
Calculate current GOAT seller commission, location seller fee, cash-out fee, payout, profit, margin, ROI, and target sale price.
10
OfferUp local seller math
OfferUp Fee Calculator
Calculate OfferUp local-sale profit with the current zero-commission policy, optional paid features, payment costs, meetup costs, margin, ROI, and target price.
11
Marketplace seller math
Facebook Marketplace Fee Calculator
Calculate current Facebook Marketplace selling fees, payout, profit, margin, ROI, and the price needed for a target profit.
12
eBay seller math
eBay Fee Calculator
Estimate eBay final value fees, promoted listing fees, net payout, actual profit, margin, ROI, and target sale price.
13
Payment math
PayPal Fee Calculator
Calculate current PayPal business transaction fees, net payment, profit, margin, and the price needed for a target profit.
14
Stripe payment math
Stripe Fee Calculator
Calculate current U.S. Stripe card, Terminal, ACH, and Link fees, net payout, profit, and the charge needed for a target profit.
15
Venmo seller math
Venmo Fee Calculator
Calculate current Venmo business, goods and services, Tap to Pay, and Instant Transfer fees with payout, profit, and target pricing.
16
Square payment math
Square Fee Calculator
Calculate current U.S. Square in-person, online, invoice, keyed, API, and Afterpay fees with payout, profit, and reverse pricing.
17
Shopify payment math
Shopify Fee Calculator
Calculate current U.S. Shopify Payments and third-party transaction fees by plan, plus payout, profit, margin, and target price.
18
Amazon seller math
Amazon FBA Fee Calculator
Estimate 2026 Amazon U.S. referral, FBA fulfillment, plan, storage, inbound, payout, profit, and target price.
19
Etsy shop math
Etsy Fee Calculator
Estimate Etsy listing, transaction, payment processing, and Offsite Ads fees with net profit and target pricing.
20
Live-selling math
Whatnot Fee Calculator
Estimate Whatnot commission, payment processing, payout, profit, margin, ROI, and target sale price.
21
Resale math
Depop Fee Calculator
Calculate current U.S. Depop payment processing and optional boosted-listing fees with net profit and target price.
22
Menswear resale math
Grailed Fee Calculator
Estimate Grailed's current tiered seller commission, Stripe processing, payout, profit, margin, and target price.
23
Marketplace math
Mercari Fee Calculator
Estimate Mercari's current U.S. selling fee, payout, profit, margin, ROI, and target sale price.
24
Closet math
Poshmark Fee Calculator
Calculate Poshmark seller fees, net earnings, real profit, margin, ROI, and target listing price.
25
Cost and sales planning
Break-Even Calculator
Calculate break-even units and sales revenue after variable costs, marketplace fees, fixed transaction charges, and monthly fixed costs.
26
Business fundamentals
Profit Margin Calculator
Calculate gross profit, net profit, gross margin, net margin, and the revenue required for a target margin.
27
Pricing fundamentals
Markup Calculator
Convert cost and markup into selling price, profit, margin, and the price needed for a target margin.
More than a payout number
A listing can pay out and still lose money.
Marketplace Math separates the platform's cut from what the sale actually earns after inventory, shipping, packaging, and promotions.
Add your real costs
Include item cost, postage, supplies, and promoted-listing spend.
Protect the profit
See payout, profit, margin, ROI, and the sale price needed for your target.
Seller guides
The fee policy, translated.
Official sources, concrete formulas, and the edge cases that change your take-home amount.
01
Amazon vs eBay fee guide
Amazon Seller Fees vs eBay: A Current U.S. Cost Comparison
Compare current Amazon seller fees vs eBay for U.S. sales, including category rates, fee bases, plan costs, listing fees, and worked examples.Read guide ↗02Reverb seller fee guide
Reverb Seller Fees: Rates, Payouts, and Profit Examples
Learn current Reverb seller fees, processing rates, fee bases, minimums, caps, Bump and cross-border costs with payout and profit examples.Read guide ↗03Listing fee guide
How Listing Fees Affect Seller Profit: Formula and Examples
Learn how listing fees, renewals, relists, and free allowances affect seller profit, with editable formulas and current official marketplace examples.Read guide ↗04Selling commission guide
How to Calculate Selling Commission: Formula, Payout, and Profit
Learn how to calculate selling commission, net payout, profit, margin, and target price with percentage, fixed-fee, and worked examples.Read guide ↗05eBay advertising fee guide
eBay Promoted Listings Fees: General vs Priority
eBay Promoted Listings General charges a seller-selected percentage after an attributed sale, while Priority charges per valid click. Learn the fee base and formulas.Read guide ↗06Card processing fee guide
How Credit Card Processing Fees Work
Credit card processing fees combine percentage, fixed, and sometimes monthly or conditional costs. Learn the formula, compare rates, and calculate net payout.Read guide ↗07Seller fee comparison guide
Compare Marketplace Selling Fees: eBay, Etsy, and Walmart
Compare current eBay, Etsy, and Walmart Marketplace seller fees with matched examples, fee-base rules, profit formulas, and a live calculator.Read guide ↗08OfferUp selling fee guide
OfferUp Selling Fees: Local Commission, Paid Features, and Profit
OfferUp does not charge a commission on in-person transactions. Learn which optional features can still cost money and calculate actual local-sale profit.Read guide ↗09Walmart Marketplace fee guide
Walmart Marketplace Referral Fees: Category Rates and Examples
Learn current U.S. Walmart Marketplace referral fees by category, the total sales price fee base, tier rules, payout formulas, and profit examples.Read guide ↗10StockX seller fee guide
StockX Seller Fees by Level: Rates, Payouts, and Examples
Learn current U.S. StockX seller fees by level, the 3% processing charge, minimum fee, payout formula, and worked profit examples.Read guide ↗11GOAT seller fee guide
GOAT Seller Fees: Commission, Cash Out, and Payout Examples
Learn current GOAT seller commission tiers, location seller fees, cash-out charges, payout formulas, and worked U.S. and Canadian examples.Read guide ↗12Facebook Marketplace fee guide
Facebook Marketplace Selling Fees: Local, Shipping, and Shop Costs
Learn current Facebook Marketplace selling fees for local sales, shipped checkout orders, and Shop Sellers with formulas and profit examples.Read guide ↗13Shopify fee guide
Shopify Fees: Payments, Transaction Rates, and Profit Examples
Learn current U.S. Shopify Payments and third-party transaction fees by plan with formulas, worked examples, payout, and profit guidance.Read guide ↗14Amazon FBA fee guide
Amazon FBA Fees: 2026 Fulfillment, Referral, Storage, and Seller Costs
Calculate 2026 Amazon U.S. FBA fulfillment, referral, storage, inbound, and selling-plan fees with formulas and worked profit examples.Read guide ↗15eBay sports card fee guide
eBay Seller Fees for Sports Cards: Rates and Examples
Calculate eBay seller fees for sports cards with the current U.S. rate, per-item tier, order charge, fee base, and worked profit examples.Read guide ↗16eBay fee guide
How Much Does eBay Take? Current Seller Fees Explained
Understand current eBay final value fees, order fees, promoted listings, category tiers, and the difference between payout and profit.Read guide ↗17PayPal fee guide
PayPal Business Fees: What a Seller Pays Per Transaction
Compare current U.S. PayPal Checkout, card, and QR transaction fees and learn how to calculate net payment and profit.Read guide ↗18Stripe fee guide
Stripe Fees Explained: Payment Processing Rates and Examples
Learn current U.S. Stripe processing fees for online cards, Terminal, ACH, Link, international cards, and reverse pricing with worked examples.Read guide ↗19Etsy fee guide
How Much Does Etsy Take? Listing, Transaction, Payment, and Ad Fees
See how Etsy listing, transaction, payment processing, and Offsite Ads fees stack together for a U.S. seller.Read guide ↗20Whatnot fee guide
Whatnot Seller Fees: Commission, Processing, and Net Earnings
Understand current Whatnot U.S. commission and payment-processing fees, their different bases, and how to estimate profit.Read guide ↗21Depop fee guide
Depop Seller Fees in the U.S.: Processing and Boosted Listings
Calculate current U.S. Depop payment processing and boosted-listing fees after the removal of the standard selling fee.Read guide ↗22Grailed fee guide
Grailed Seller Fees: The New 6% and 9% Commission Tiers
Understand Grailed's current under-$120 and $120-plus commission tiers, processing rates, shipping basis, and seller profit.Read guide ↗23Mercari fee guide
Mercari Selling Fees: The Current 10% U.S. Seller Fee
Understand Mercari's current U.S. 10% selling fee, what is included in the basis, and how to move from payout to profit.Read guide ↗24Poshmark fee guide
How Much Does Poshmark Take? The $2.95 and 20% Fee Tiers
Calculate Poshmark's two U.S. seller-fee tiers and understand how offers, shipping discounts, and item cost affect profit.Read guide ↗25Break-even guide
How to Calculate the Break-Even Point for Products and Marketplace Sales
Calculate break-even units and revenue with fixed costs, variable costs, contribution margin, marketplace fees, and worked examples.Read guide ↗26Margin guide
How to Calculate Profit Margin: Gross, Net, and Target Margin
Learn the formulas for gross profit, gross margin, net profit, net margin, and revenue required to reach a target margin.Read guide ↗27Pricing guide
Markup vs. Margin: Formulas, Examples, and Pricing Mistakes
Understand the difference between markup and margin, convert between them, and set prices that cover direct and marketplace costs.Read guide ↗28Square fee guide
Square Processing Fees: Current Rates, Formulas, and Examples
Learn current U.S. Square processing fees for in-person, online, invoice, keyed, API, and Afterpay payments with formulas and worked examples.Read guide ↗29Venmo fee guide
Venmo Fees: Business, Goods and Services, and Instant Transfer
Learn current Venmo business, goods and services, Tap to Pay, and Instant Transfer fees with formulas, examples, and payout guidance.Read guide ↗Price with evidence
Revenue is vanity. What you keep is the business.
Start with the marketplace, enter the whole order, and see the profit before you accept the offer.
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