About Sandy & StaffingCalcs
Transparent rate modeling and tax guides built by a US recruitment finance analyst.
Sandy
Staffing Finance Analyst & Tool Creator
I help consultants, recruiters, and W2 employees analyze rate splits, vendor margins, and payroll taxes to make fair negotiations.
Why I Built StaffingCalcs
Hi, I'm Sandy. I've spent the last seven years working inside the United States IT recruitment and staffing machinery. I’ve seen rate splits calculated behind closed doors, prime vendors adding massive markups, and independent contractors signing W2 or C2C contracts without fully understanding their net take-home pay.
Recruiting agencies and payroll firms have expensive enterprise software to trace margins and predict profits. But the individual actor—the software engineer negotiating an H-1B transfer, the student on F-1 OPT trying to claim a FICA refund, or the independent recruiter running a solo desk—is usually left with messy Excel sheets or generic tax tools that don’t fit their exact visa or business setup.
I built StaffingCalcs as a free, transparent, and direct toolkit to solve this. No corporate jargon. No AI-generated fluff. Just clean, accurate calculations to give you leverage in your rate negotiations.
How Our Calculators Are Kept Accurate
StaffingCalcs is an independent platform. To ensure you can rely on our rate estimates, we enforce three strict standards:
- IRS & USCIS Alignment: Every calculation engine (including the Social Security wage cap limits, progressive tax tables for states like California and New York, and standard FICA exemptions for OPT/CPT students) is updated annually according to official IRS bulletins and USCIS guidance.
- CPA-Verified Formulas: The mathematical formulas for self-employment taxes (15.3% computed on 92.35% of net business income) and the Qualified Business Income (QBI) 20% deductions are double-checked against CPA worksheets.
- 100% Client-Side Privacy: Your rate negotiations are your business. Unlike typical online calculators that collect your data, StaffingCalcs processes all mathematical inputs directly in your local browser window. Your salaries, C2C splits, and states are never sent to or stored on any server.
Contact & Feedback
Have questions about the math, or want to suggest a new tool? I read all user feedback and actively update these calculators. You can reach out directly via our Contact Page or connect with me to discuss staffing rate splits.
Regulatory Disclaimer
All calculations, comparisons, and tax outputs on StaffingCalcs.com are estimates and are provided for educational and planning purposes only. While I strive to keep rates accurate, I do not provide formal legal, tax, or financial advisory services. Please consult with a licensed CPA or immigration attorney before signing employment offers or filing tax returns.