Hey Product Hunt community! 👋 I'm Aaradhya, an engineering student and solo builder at SNAB. Like many freelancers and indie hackers, I was tired of surprise payment fee cuts on Stripe and PayPal eating into my project margins. Most online calculators were either cluttered with intrusive popups, stuck on outdated 2021 fee schedules, or demanding account sign-ups. So, I built FeeKit — an in-browser, sub-second financial calculator designed to do one thing exceptionally well: protect your net margins. Key features: • Real-time Stripe, PayPal & Square fee breakdowns (Domestic & International) • Reverse Invoicing: Calculate the exact amount to bill clients so you take home your exact net target payout • 50 US States Sales Tax & UK HMRC VAT compliance • 100% client-side privacy: Zero financial numbers ever leave your device memory It's completely free with zero sign-ups or paywalls. I'd love to hear your feedback, thoughts, and what other payment gateways or regional tax rules you'd like to see added next! 🚀

FeeKit

Instant payment fee & reverse payout calculator for makers

Instant payment fee & reverse payout calculator for makers