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
Categories
The site structure follows the real decision flow of online sellers and freelancers.
Rather than listing random calculators, SellerGauge groups tools by the questions people ask before they price, invoice, or get paid.
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