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VendorCalcs
Payment fee & invoice gross-up calculator for sellers
Most payment fee calculators are clunky, loaded with ads, and run outdated rates. VendorCalcs is an ad-free, zero-latency payment fee auditor for founders, sellers & freelancers. What makes it stand out: • Reverse Invoice Gross-Up: Calculate the exact amount to bill to hit your net target • Refund Loss Audit: See how much unrefunded fees bleed your margins on returns • 19 platforms (Stripe, PayPal, Shopify, LemonSqueezy, Etsy) across 5 countries • Zero ads, no sign-ups, 100% free
Hey Product Hunt community! 👋
I'm excited to launch VendorCalcs — an ad-free, zero-latency payment fee calculator and margin auditing tool for anyone selling online or invoicing clients.
Why did I build this? If you've ever sold online or invoiced clients through Stripe or PayPal, you know that payment processors silently eat away at your margins in unexpected ways:
The Invoicing Guesswork: How many times have you needed $5,000 in your bank account, sent an invoice for $5,000, and ended up with $4,850? Freelancers and agencies constantly lose margin because of invoice gross-up math.
The Refund Bleed: Payment gateways (Stripe, PayPal, Square) keep 100% of their processing fees when you refund a customer. You lose the sale and you still pay the swipe fee.
Clunky Legacy Calculators: Almost every fee calculator on Google is plastered with annoying pop-up ads, loads slowly, and uses outdated fee sheets.
What VendorCalcs does: • Reverse Invoice Gross-Up: Enter the net payout you want in your bank account, and get the exact dollar amount to bill your client. • 19 Platforms & 5 Global Regions: Up-to-date rate cards for Stripe, PayPal, Square, Shopify, LemonSqueezy, Etsy, eBay, Mercari, Poshmark, plus local rails like India's Razorpay and Cashfree. • Refund Loss Auditor: Calculate your silent annual margin bleed from customer returns in seconds. • Edge-Powered & Private: Built with Astro and Alpine.js on Cloudflare edge. Instant math, zero ads, no sign-up required, 100% free forever.
I'd love your feedback:
Which payment gateway, marketplace, or regional currency should we add next?
Would an embeddable checkout widget or calculator API be useful for your workflow?
Thank you so much for checking us out! I'll be in the comments all day answering questions and taking feature requests. 🚀
About VendorCalcs on Product Hunt
“Payment fee & invoice gross-up calculator for sellers”
VendorCalcs was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #157 on the daily leaderboard. Most payment fee calculators are clunky, loaded with ads, and run outdated rates. VendorCalcs is an ad-free, zero-latency payment fee auditor for founders, sellers & freelancers. What makes it stand out: • Reverse Invoice Gross-Up: Calculate the exact amount to bill to hit your net target • Refund Loss Audit: See how much unrefunded fees bleed your margins on returns • 19 platforms (Stripe, PayPal, Shopify, LemonSqueezy, Etsy) across 5 countries • Zero ads, no sign-ups, 100% free
On the analytics side, VendorCalcs competes within Productivity, Fintech and E-Commerce — topics that collectively have 753.3k followers on Product Hunt. The dashboard above tracks how VendorCalcs performed against the three products that launched closest to it on the same day.
Who hunted VendorCalcs?
VendorCalcs was hunted by Harshith C. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of VendorCalcs including community comment highlights and product details, visit the product overview.
Harshith C