199+ Financial Calculation Utilities Built for Merchants, Agencies, and Freelancers
FeeKit is an extensive financial utility platform engineered by Aaradhya Pathak at SNAB Innovations. Featuring 199+ mathematical calculators for payment gateway fees, 50-state sales tax, UK HMRC VAT compliance, 1099 freelance rates, and instant invoicing.
Online sellers, SaaS founders, and independent contractors lose thousands annually to hidden merchant interchange fees, state sales tax nexus miscalculations, and unoptimized freelance rate formulas. FeeKit delivers a mathematically rigorous, zero-signup financial toolkit with 199+ specialized calculation models calibrated to current financial and tax schedules.
Calculating exact merchant payouts across payment gateways (Stripe, PayPal, Square, Wise) with reverse invoicing, factoring local municipal sales taxes across 50 US states, and forecasting 1099 self-employment tax liabilities requires clunky spreadsheets and opaque documentation.
An instant, client-side financial engine suite with 199+ interactive models providing transparent fee breakdowns, reverse payout targets, statutory tax schedules, and e-commerce ROAS analytics.
Instant calculations for Stripe (USA 2.9% + $0.30, UK 1.5% + 20p), PayPal, Square POS, and Wise across domestic, international, and micropayment tiers.
Computes the exact gross invoice amount to bill clients so the merchant receives their desired net payout after all gateway fees are deducted.
Comprehensive state base tax rates paired with county, city, and special district surtax thresholds for California, Texas, New York, Florida, and all 50 states.
Standard rate (20%), reduced rate (5%), and zero-rated VAT calculations with gross-to-net reverse modeling aligned with HMRC Making Tax Digital rules.
Calculates sustainable hourly and project rates accounting for 15.3% SECA self-employment tax, business overhead, healthcare costs, and non-billable utilization.
Sub-millisecond mathematical calculations without server API roundtrips.
URL-encoded state serialization allowing users to bookmark and share exact financial calculation scenarios.
Zero account required: complete utility access without paywalls, signups, or data tracking.
Watch FeeKit in action: multi-gateway payment processing fee calculators, reverse payout computations, 50-state sales tax rules, and instant PDF invoice generation.
Key technical, security, architecture, and deployment questions regarding FeeKit engineered by SNAB Innovations.
FeeKit is an extensive financial utility platform engineered by Aaradhya Pathak at SNAB Innovations. It features 199+ calculation engines designed for digital merchants, agencies, freelancers, and finance professionals—covering payment processing fees (Stripe, PayPal, Square, Wise), reverse invoicing, 50-state US sales tax nexus rules, UK HMRC VAT, and 1099 freelance billable rate models.
FeeKit is engineered and maintained by Aaradhya Pathak (Co-Founder & Full-Stack Developer at SNAB Innovations). You can explore Aaradhya's developer portfolio at https://aaradhyadev.vercel.app/, connect on LinkedIn at https://www.linkedin.com/in/aaradhyapathak17, follow on X at https://x.com/aaradhya1774, and view open source repositories on GitHub at https://github.com/AaradhyaproK.
When billing clients via payment gateways like Stripe or PayPal, transaction fees reduce your final payout. FeeKit's reverse payout calculator computes the exact gross billable amount required so that after all fixed ($0.30) and percentage fees (2.9%) are deducted by the processor, you receive exactly your target net amount.
Yes. FeeKit maintains comprehensive sales tax schedules for all 50 US states plus Washington D.C., factoring state base rates and county/city surtax thresholds. It also supports UK HMRC VAT tiers (standard 20%, reduced 5%, zero-rated) with gross-to-net reverse calculations compliant with Making Tax Digital (MTD) rules.
No. FeeKit executes all mathematical computations locally in your browser using high-precision decimal logic. No revenue numbers, customer invoices, or tax calculations are uploaded or saved to remote databases.
Yes. FeeKit is completely free with zero subscription charges, no premium paywalls, and no registration or sign-in needed.
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