FinOS Browser & Financial Intelligence
Stop losing 15% to 30% of your earnings to hidden marketplace cuts, bank FX conversion markups, and unexpected IRS withholding. Simulate your actual take-home cash in seconds with statutory precision.
Remote Freelancer Tax & Payout Calculator
Simulate client billing, platform deductions, international wire charges, and income tax withholdings in real time.
Engineered for Global Remote Contractors
Financial algorithms purpose-built to eliminate silent fee leaks, optimize statutory withholding, and maximize contract profits.
Zero-Knowledge Local Privacy
All simulations run entirely within your local browser sandbox. No financial data, billing rates, or client names are ever logged or uploaded to external servers.
Hidden Bank FX Spread Audit
Uncover the true cost of currency conversion. Detect the hidden 2% to 4.5% margins that retail banks and payment gateways silently add on top of interbank mid-market rates.
US Form W-8BEN Treaty Engine
Determine statutory IRS non-resident alien withholding rules. Verify your eligibility for 0% treaty exemptions vs. the standard 30% penalty rate before signing contracts.
Reverse Hourly Rate Targeter
Need exactly $4,000/month net in your pocket? FinOS reverse-engineers your minimum required hourly billing rate accounting for billable weekly hours and statutory friction.
Featured Tax & Compliance Research
W-8BEN Form Complete Guide for International Freelancers (Step-by-Step)
Avoid the mandatory 30% IRS withholding tax on Upwork, Fiverr, and US clients by correctly claiming bilateral tax treaty exemptions.
The Ultimate UK IR35 Guide for Remote Contractors
Understand the difference between Inside and Outside IR35 status to protect your contractor payouts and maintain tax compliance.
PayPal vs Stripe vs Wise: Real Freelance Fee & FX Margin Audit
Compare transaction fees, currency exchange markups, and withdrawal limits to choose the cheapest payout method for your international clients.