Payment Fees
Estimate processor costs, gross-up charges, and net payouts before you send or receive money.
- PayPal Fee Calculator
- Stripe Fee Calculator
- Gross-Up Calculator
SellerGauge
Know your real numbers.
Practical calculators and guides for seller fees, pricing, tax, invoices, and payouts.
Categories
A focused toolkit for money questions that show up before every sale, quote, and payout.
The site is organized around the actual decision points sellers and freelancers hit every day.
Marketplace Fees
Understand what Etsy, Amazon, eBay, and other platforms take before you price a listing.
- Etsy Fee Calculator
- Amazon Seller Fee Calculator
- Amazon FBA Revenue Calculator
Pricing and Profit
Move from rough pricing to clear margins, break-even points, and take-home profit.
- Profit Margin Calculator
- Seller Payout Calculator
- eBay Fee Calculator
Tax and VAT
Work out VAT, GST, and tax-inclusive or tax-exclusive prices without spreadsheet friction.
- VAT Calculator
- Reverse VAT Calculator
- Sales Tax Calculator
Invoicing
Prepare clean quotes and invoices with totals that already reflect your fees and tax assumptions.
- Invoice Generator
- Quote Generator
- Gross-Up Calculator
Freelance Rates
Reverse-calculate the rate you need to charge based on time, overhead, fees, and target income.
- Freelance Hourly Rate Calculator
- Project Rate Calculator
- Retainer Pricing Calculator
Featured Tools
Start with the calculators that usually drive pricing and payout decisions first.
Payment Fees
PayPal Fee Calculator
Estimate the fee, net payout, and amount you need to charge to land on your target total.
LivePayment FeesGross-Up Calculator
Reverse-calculate the amount you need to charge when processor fees would otherwise reduce your target net.
LiveMarketplace FeesEtsy Fee Calculator
Model listing, transaction, payment, and optional offsite ad fees before you price a product.
LiveMarketplace FeesAmazon Seller Fee Calculator
Estimate referral and fulfillment fees before you decide whether a listing still has enough profit left.
LiveMarketplace FeesAmazon FBA Revenue Calculator
Model revenue left after referral, fulfillment, storage, and returns assumptions before you commit to an FBA listing.
LivePricing and ProfitSeller Payout Calculator
Estimate how much cash is actually left after payment fees, marketplace costs, shipping, tax, and cost of goods.
LivePricing and ProfitProfit Margin Calculator
See gross profit, margin, and markup before you publish a new price or quote a client.
LiveTax and VATSales Tax Calculator
Add or extract sales tax from a price with a configurable rate and instant before-tax totals.
LiveTax and VATReverse VAT Calculator
Extract the net amount and VAT portion from a gross price when tax is already included.
LiveInvoicingInvoice Generator
Build a clean invoice total with quantity, rate, tax, and optional fee pass-through in one place.
LiveFreelance RatesFreelance Hourly Rate Calculator
Back into an hourly rate from income goals, overhead, working weeks, and fee buffers.
LiveFreelance RatesProject Rate Calculator
Turn hours, target hourly value, overhead, and revision buffer into a project quote you can defend.
LiveFreelance RatesRetainer Pricing Calculator
Turn hours, baseline rate, overhead, and margin targets into a monthly retainer you can defend.
LiveWhy SellerGauge
Built to explain the result, not just spit out a number.
Calculate fast
Every core page is built to answer a real pricing or payout question in seconds.
See the assumptions
We show the formula logic, example math, and the exact rate assumptions used.
Use source-backed logic
Platform and tax references link back to official docs so the math stays defensible.
Worked Examples
Real use cases beat empty calculators.
The strongest pages on SellerGauge pair calculation tools with example math, assumptions, and practical caveats.
A $100 sale through PayPal
See the processor fee, your take-home amount, and the price required to still net $100.
Pricing an Etsy product with margin in mind
Estimate whether shipping, transaction fees, and ads still leave you enough room.
Extracting VAT from an inclusive price
Break a tax-inclusive total into its net amount and VAT amount before invoicing.
Next Up
Project pricing is live. Next we deepen comparisons and payout planning.
SellerGauge now covers project rates alongside payments, marketplace math, payouts, tax, invoicing, and retainers. The next step is break-even and channel-comparison workflows.
Break-Even Calculator
Marketplace Payout Comparison
Payoneer Fee Calculator
Guides
Support pages will stay practical, narrow, and tied to the calculators.
How to Price Products With Fees and Margin
A practical way to move from cost and fees to a selling price that still protects your margin.
PayPal and Stripe Fee Pass-Through, Explained
A simple framework for deciding whether to absorb processor costs or gross them up in a quote or invoice.
VAT Inclusive vs VAT Exclusive Pricing
The difference that matters when you quote, invoice, or compare listed prices across platforms and markets.
Project Rate vs Retainer Pricing
How to decide whether a scope should be priced as a fixed project, a monthly retainer, or a simpler hourly engagement.
Marketplace Revenue vs Seller Payout, Explained
Why gross order value is not the same thing as the cash you actually keep after marketplace, shipping, tax, and payment costs.
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