About FeeKit
The definitive, zero-latency financial computation engine built for commercial operators in the US and UK.
Our Mission: Eliminate Financial Guesswork
FeeKit was founded to solve a pervasive frustration faced by modern business operators: bloated, slow, ad-choked calculators that send sensitive business data across unknown servers and return inaccurate, outdated mathematical approximations.
Whether you are an e-commerce brand calculating unit economics on Amazon FBA, a software agency structuring 1099 contractor proposals, or an online merchant reconciling Stripe and PayPal gateway cuts, you deserve instantaneous, pure TypeScript calculations that respect your privacy and reflect exact 2026 fiscal statutes.
Every single formula executes locally inside your web browser. Zero server round-trips, zero database storage, and instant zero-millisecond responsiveness.
Our tax databases are calibrated directly against official revenue guidelines: IRS Form 1040 Schedule C, California CDTFA, Texas Comptroller, and UK HMRC Making Tax Digital schedules.
Every engine supports forward calculations (Charge $X → Net Received) and reverse math (Need $X Net → Gross to Invoice), preventing margin erosion.
Editorial Standards & Official Data Sources
All benchmarks and formulas across our 160+ dedicated tools are verified against primary financial and governmental records:
- US State Sales Tax: Sourced from individual Department of Revenue releases, including California CDTFA Publication 71, New York State Publication 718, and Florida DR-15.
- UK VAT & HMRC: Sourced from HMRC Notice 700 (The VAT Guide) and standard/reduced rate schedules under Making Tax Digital (MTD).
- Payment Processors: Published developer documentation and merchant service agreements from Stripe, PayPal Commerce, Square, Wise Business, and Authorize.Net.
Parent Company & Corporate Governance
FeeKit is designed, engineered, and maintained as a specialized fintech utility by Snab Innovations, an independent digital products and software engineering company committed to building fast, high-utility, privacy-first software.
Have a Question or Rate Update?
Reach our engineering and editorial team directly at hello@snab.co.in.